diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/Documentation/dontdiff linux-2.6.36.4-pax/Documentation/dontdiff --- linux-2.6.36.4/Documentation/dontdiff 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/Documentation/dontdiff 2010-12-14 21:18:01.000000000 +0100 @@ -3,6 +3,7 @@ *.bin *.cpio *.csp +*.dbg *.dsp *.dvi *.elf @@ -38,8 +39,10 @@ *.tab.h *.tex *.ver +*.vim *.xml *_MODULES +*_reg_safe.h *_vga16.c *~ *.9 @@ -49,11 +52,16 @@ 53c700_d.h CVS ChangeSet +GPATH +GRTAGS +GSYMS +GTAGS Image Kerntypes Module.markers Module.symvers PENDING +PERF* SCCS System.map* TAGS @@ -62,6 +70,7 @@ aic7*reg_print.c* aic7*seq.h* aicasm aicdb.h* +altivec[0-9].c asm-offsets.h asm_offsets.h autoconf.h* @@ -76,7 +85,10 @@ btfixupprep build bvmlinux bzImage* +capflags.c classlist.h* +clut_vga16.c +common-cmds.h comp*.log compile.h* conf @@ -100,19 +112,23 @@ fore200e_mkfirm fore200e_pca_fw.c* gconf gen-devlist +gen-kdb_cmds.c gen_crc32table gen_init_cpio generated genheaders genksyms *_gray256.c +hash ihex2fw ikconfig.h* +inat-tables.c initramfs_data.cpio +initramfs_data.cpio.bz2 initramfs_data.cpio.gz initramfs_list +int[0-9]*.c kallsyms -kconfig keywords.c ksym.c* ksym.h* @@ -136,10 +152,13 @@ mkboot mkbugboot mkcpustr mkdep +mkpiggy mkprep +mkregtable mktables mktree modpost +modules.builtin modules.order modversions.h* ncscope.* @@ -151,7 +170,9 @@ parse.h patches* pca200e.bin pca200e_ecd.bin2 +perf-archive piggy.gz +piggy.S piggyback pnmtologo ppc_defs.h* @@ -160,15 +181,18 @@ qconf raid6altivec*.c raid6int*.c raid6tables.c +regdb.c relocs series setup setup.bin setup.elf sImage +slabinfo sm_tbl* split-include syscalltab.h +tables.c tags tftpboot.img timeconst.h @@ -189,14 +213,20 @@ version.h* vmlinux vmlinux-* vmlinux.aout +vmlinux.bin.all +vmlinux.bin.bz2 vmlinux.lds +vmlinux.relocs +voffset.h vsyscall.lds vsyscall_32.lds wanxlfw.inc uImage unifdef +utsrelease.h wakeup.bin wakeup.elf wakeup.lds zImage* zconf.hash.c +zoffset.h diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/Documentation/filesystems/sysfs.txt linux-2.6.36.4-pax/Documentation/filesystems/sysfs.txt --- linux-2.6.36.4/Documentation/filesystems/sysfs.txt 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/Documentation/filesystems/sysfs.txt 2010-10-27 22:58:43.000000000 +0200 @@ -123,8 +123,8 @@ set of sysfs operations for forwarding r show and store methods of the attribute owners. struct sysfs_ops { - ssize_t (*show)(struct kobject *, struct attribute *, char *); - ssize_t (*store)(struct kobject *, struct attribute *, const char *, size_t); + ssize_t (* const show)(struct kobject *, struct attribute *, char *); + ssize_t (* const store)(struct kobject *, struct attribute *, const char *, size_t); }; [ Subsystems should have already defined a struct kobj_type as a diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/Documentation/kernel-parameters.txt linux-2.6.36.4-pax/Documentation/kernel-parameters.txt --- linux-2.6.36.4/Documentation/kernel-parameters.txt 2011-02-24 20:16:19.000000000 +0100 +++ linux-2.6.36.4-pax/Documentation/kernel-parameters.txt 2011-02-24 20:27:37.000000000 +0100 @@ -1836,6 +1836,13 @@ and is between 256 and 4096 characters. the specified number of seconds. This is to be used if your oopses keep scrolling off the screen. + pax_nouderef [X86] disables UDEREF. Most likely needed under certain + virtualization environments that don't cope well with the + expand down segment used by UDEREF on X86-32 or the frequent + page table updates on X86-64. + + pax_softmode= [X86-32] 0/1 to disable/enable PaX softmode on boot already. + pcbit= [HW,ISDN] pcd. [PARIDE] diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/Makefile linux-2.6.36.4-pax/Makefile --- linux-2.6.36.4/Makefile 2011-02-24 20:16:19.000000000 +0100 +++ linux-2.6.36.4-pax/Makefile 2011-02-24 20:27:37.000000000 +0100 @@ -229,8 +229,8 @@ CONFIG_SHELL := $(shell if [ -x "$$BASH" HOSTCC = gcc HOSTCXX = g++ -HOSTCFLAGS = -Wall -Wmissing-prototypes -Wstrict-prototypes -O2 -fomit-frame-pointer -HOSTCXXFLAGS = -O2 +HOSTCFLAGS = -Wall -W -Wmissing-prototypes -Wstrict-prototypes -O2 -fomit-frame-pointer -fno-delete-null-pointer-checks +HOSTCXXFLAGS = -O2 -fno-delete-null-pointer-checks # Decide whether to build built-in, modular, or both. # Normally, just do built-in. diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/alpha/include/asm/dma-mapping.h linux-2.6.36.4-pax/arch/alpha/include/asm/dma-mapping.h --- linux-2.6.36.4/arch/alpha/include/asm/dma-mapping.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/alpha/include/asm/dma-mapping.h 2010-10-27 22:58:43.000000000 +0200 @@ -3,9 +3,9 @@ #include -extern struct dma_map_ops *dma_ops; +extern const struct dma_map_ops *dma_ops; -static inline struct dma_map_ops *get_dma_ops(struct device *dev) +static inline const struct dma_map_ops *get_dma_ops(struct device *dev) { return dma_ops; } diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/alpha/include/asm/elf.h linux-2.6.36.4-pax/arch/alpha/include/asm/elf.h --- linux-2.6.36.4/arch/alpha/include/asm/elf.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/alpha/include/asm/elf.h 2010-10-27 22:58:07.000000000 +0200 @@ -90,6 +90,13 @@ typedef elf_fpreg_t elf_fpregset_t[ELF_N #define ELF_ET_DYN_BASE (TASK_UNMAPPED_BASE + 0x1000000) +#ifdef CONFIG_PAX_ASLR +#define PAX_ELF_ET_DYN_BASE (current->personality & ADDR_LIMIT_32BIT ? 0x10000 : 0x120000000UL) + +#define PAX_DELTA_MMAP_LEN (current->personality & ADDR_LIMIT_32BIT ? 14 : 28) +#define PAX_DELTA_STACK_LEN (current->personality & ADDR_LIMIT_32BIT ? 14 : 19) +#endif + /* $0 is set by ld.so to a pointer to a function which might be registered using atexit. This provides a mean for the dynamic linker to call DT_FINI functions for shared libraries that have diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/alpha/include/asm/pgtable.h linux-2.6.36.4-pax/arch/alpha/include/asm/pgtable.h --- linux-2.6.36.4/arch/alpha/include/asm/pgtable.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/alpha/include/asm/pgtable.h 2010-10-27 22:58:07.000000000 +0200 @@ -101,6 +101,17 @@ struct vm_area_struct; #define PAGE_SHARED __pgprot(_PAGE_VALID | __ACCESS_BITS) #define PAGE_COPY __pgprot(_PAGE_VALID | __ACCESS_BITS | _PAGE_FOW) #define PAGE_READONLY __pgprot(_PAGE_VALID | __ACCESS_BITS | _PAGE_FOW) + +#ifdef CONFIG_PAX_PAGEEXEC +# define PAGE_SHARED_NOEXEC __pgprot(_PAGE_VALID | __ACCESS_BITS | _PAGE_FOE) +# define PAGE_COPY_NOEXEC __pgprot(_PAGE_VALID | __ACCESS_BITS | _PAGE_FOW | _PAGE_FOE) +# define PAGE_READONLY_NOEXEC __pgprot(_PAGE_VALID | __ACCESS_BITS | _PAGE_FOW | _PAGE_FOE) +#else +# define PAGE_SHARED_NOEXEC PAGE_SHARED +# define PAGE_COPY_NOEXEC PAGE_COPY +# define PAGE_READONLY_NOEXEC PAGE_READONLY +#endif + #define PAGE_KERNEL __pgprot(_PAGE_VALID | _PAGE_ASM | _PAGE_KRE | _PAGE_KWE) #define _PAGE_NORMAL(x) __pgprot(_PAGE_VALID | __ACCESS_BITS | (x)) diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/alpha/kernel/module.c linux-2.6.36.4-pax/arch/alpha/kernel/module.c --- linux-2.6.36.4/arch/alpha/kernel/module.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/alpha/kernel/module.c 2010-10-27 22:58:07.000000000 +0200 @@ -182,7 +182,7 @@ apply_relocate_add(Elf64_Shdr *sechdrs, /* The small sections were sorted to the end of the segment. The following should definitely cover them. */ - gp = (u64)me->module_core + me->core_size - 0x8000; + gp = (u64)me->module_core_rw + me->core_size_rw - 0x8000; got = sechdrs[me->arch.gotsecindex].sh_addr; for (i = 0; i < n; i++) { diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/alpha/kernel/osf_sys.c linux-2.6.36.4-pax/arch/alpha/kernel/osf_sys.c --- linux-2.6.36.4/arch/alpha/kernel/osf_sys.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/alpha/kernel/osf_sys.c 2010-10-27 22:58:07.000000000 +0200 @@ -1165,7 +1165,7 @@ arch_get_unmapped_area_1(unsigned long a /* At this point: (!vma || addr < vma->vm_end). */ if (limit - len < addr) return -ENOMEM; - if (!vma || addr + len <= vma->vm_start) + if (check_heap_stack_gap(vma, addr, len)) return addr; addr = vma->vm_end; vma = vma->vm_next; @@ -1201,6 +1201,10 @@ arch_get_unmapped_area(struct file *filp merely specific addresses, but regions of memory -- perhaps this feature should be incorporated into all ports? */ +#ifdef CONFIG_PAX_RANDMMAP + if (!(current->mm->pax_flags & MF_PAX_RANDMMAP)) +#endif + if (addr) { addr = arch_get_unmapped_area_1 (PAGE_ALIGN(addr), len, limit); if (addr != (unsigned long) -ENOMEM) @@ -1208,8 +1212,8 @@ arch_get_unmapped_area(struct file *filp } /* Next, try allocating at TASK_UNMAPPED_BASE. */ - addr = arch_get_unmapped_area_1 (PAGE_ALIGN(TASK_UNMAPPED_BASE), - len, limit); + addr = arch_get_unmapped_area_1 (PAGE_ALIGN(current->mm->mmap_base), len, limit); + if (addr != (unsigned long) -ENOMEM) return addr; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/alpha/kernel/pci-noop.c linux-2.6.36.4-pax/arch/alpha/kernel/pci-noop.c --- linux-2.6.36.4/arch/alpha/kernel/pci-noop.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/alpha/kernel/pci-noop.c 2010-10-27 22:58:43.000000000 +0200 @@ -173,7 +173,7 @@ static int alpha_noop_set_mask(struct de return 0; } -struct dma_map_ops alpha_noop_ops = { +const struct dma_map_ops alpha_noop_ops = { .alloc_coherent = alpha_noop_alloc_coherent, .free_coherent = alpha_noop_free_coherent, .map_page = alpha_noop_map_page, @@ -183,7 +183,7 @@ struct dma_map_ops alpha_noop_ops = { .set_dma_mask = alpha_noop_set_mask, }; -struct dma_map_ops *dma_ops = &alpha_noop_ops; +const struct dma_map_ops *dma_ops = &alpha_noop_ops; EXPORT_SYMBOL(dma_ops); void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long maxlen) diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/alpha/kernel/pci_iommu.c linux-2.6.36.4-pax/arch/alpha/kernel/pci_iommu.c --- linux-2.6.36.4/arch/alpha/kernel/pci_iommu.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/alpha/kernel/pci_iommu.c 2010-10-27 22:58:43.000000000 +0200 @@ -950,7 +950,7 @@ static int alpha_pci_set_mask(struct dev return 0; } -struct dma_map_ops alpha_pci_ops = { +const struct dma_map_ops alpha_pci_ops = { .alloc_coherent = alpha_pci_alloc_coherent, .free_coherent = alpha_pci_free_coherent, .map_page = alpha_pci_map_page, @@ -962,5 +962,5 @@ struct dma_map_ops alpha_pci_ops = { .set_dma_mask = alpha_pci_set_mask, }; -struct dma_map_ops *dma_ops = &alpha_pci_ops; +const struct dma_map_ops *dma_ops = &alpha_pci_ops; EXPORT_SYMBOL(dma_ops); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/alpha/mm/fault.c linux-2.6.36.4-pax/arch/alpha/mm/fault.c --- linux-2.6.36.4/arch/alpha/mm/fault.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/alpha/mm/fault.c 2010-10-27 22:58:07.000000000 +0200 @@ -54,6 +54,124 @@ __load_new_mm_context(struct mm_struct * __reload_thread(pcb); } +#ifdef CONFIG_PAX_PAGEEXEC +/* + * PaX: decide what to do with offenders (regs->pc = fault address) + * + * returns 1 when task should be killed + * 2 when patched PLT trampoline was detected + * 3 when unpatched PLT trampoline was detected + */ +static int pax_handle_fetch_fault(struct pt_regs *regs) +{ + +#ifdef CONFIG_PAX_EMUPLT + int err; + + do { /* PaX: patched PLT emulation #1 */ + unsigned int ldah, ldq, jmp; + + err = get_user(ldah, (unsigned int *)regs->pc); + err |= get_user(ldq, (unsigned int *)(regs->pc+4)); + err |= get_user(jmp, (unsigned int *)(regs->pc+8)); + + if (err) + break; + + if ((ldah & 0xFFFF0000U) == 0x277B0000U && + (ldq & 0xFFFF0000U) == 0xA77B0000U && + jmp == 0x6BFB0000U) + { + unsigned long r27, addr; + unsigned long addrh = (ldah | 0xFFFFFFFFFFFF0000UL) << 16; + unsigned long addrl = ldq | 0xFFFFFFFFFFFF0000UL; + + addr = regs->r27 + ((addrh ^ 0x80000000UL) + 0x80000000UL) + ((addrl ^ 0x8000UL) + 0x8000UL); + err = get_user(r27, (unsigned long *)addr); + if (err) + break; + + regs->r27 = r27; + regs->pc = r27; + return 2; + } + } while (0); + + do { /* PaX: patched PLT emulation #2 */ + unsigned int ldah, lda, br; + + err = get_user(ldah, (unsigned int *)regs->pc); + err |= get_user(lda, (unsigned int *)(regs->pc+4)); + err |= get_user(br, (unsigned int *)(regs->pc+8)); + + if (err) + break; + + if ((ldah & 0xFFFF0000U) == 0x277B0000U && + (lda & 0xFFFF0000U) == 0xA77B0000U && + (br & 0xFFE00000U) == 0xC3E00000U) + { + unsigned long addr = br | 0xFFFFFFFFFFE00000UL; + unsigned long addrh = (ldah | 0xFFFFFFFFFFFF0000UL) << 16; + unsigned long addrl = lda | 0xFFFFFFFFFFFF0000UL; + + regs->r27 += ((addrh ^ 0x80000000UL) + 0x80000000UL) + ((addrl ^ 0x8000UL) + 0x8000UL); + regs->pc += 12 + (((addr ^ 0x00100000UL) + 0x00100000UL) << 2); + return 2; + } + } while (0); + + do { /* PaX: unpatched PLT emulation */ + unsigned int br; + + err = get_user(br, (unsigned int *)regs->pc); + + if (!err && (br & 0xFFE00000U) == 0xC3800000U) { + unsigned int br2, ldq, nop, jmp; + unsigned long addr = br | 0xFFFFFFFFFFE00000UL, resolver; + + addr = regs->pc + 4 + (((addr ^ 0x00100000UL) + 0x00100000UL) << 2); + err = get_user(br2, (unsigned int *)addr); + err |= get_user(ldq, (unsigned int *)(addr+4)); + err |= get_user(nop, (unsigned int *)(addr+8)); + err |= get_user(jmp, (unsigned int *)(addr+12)); + err |= get_user(resolver, (unsigned long *)(addr+16)); + + if (err) + break; + + if (br2 == 0xC3600000U && + ldq == 0xA77B000CU && + nop == 0x47FF041FU && + jmp == 0x6B7B0000U) + { + regs->r28 = regs->pc+4; + regs->r27 = addr+16; + regs->pc = resolver; + return 3; + } + } + } while (0); +#endif + + return 1; +} + +void pax_report_insns(void *pc, void *sp) +{ + unsigned long i; + + printk(KERN_ERR "PAX: bytes at PC: "); + for (i = 0; i < 5; i++) { + unsigned int c; + if (get_user(c, (unsigned int *)pc+i)) + printk(KERN_CONT "???????? "); + else + printk(KERN_CONT "%08x ", c); + } + printk("\n"); +} +#endif /* * This routine handles page faults. It determines the address, @@ -131,8 +249,29 @@ do_page_fault(unsigned long address, uns good_area: si_code = SEGV_ACCERR; if (cause < 0) { - if (!(vma->vm_flags & VM_EXEC)) + if (!(vma->vm_flags & VM_EXEC)) { + +#ifdef CONFIG_PAX_PAGEEXEC + if (!(mm->pax_flags & MF_PAX_PAGEEXEC) || address != regs->pc) + goto bad_area; + + up_read(&mm->mmap_sem); + switch (pax_handle_fetch_fault(regs)) { + +#ifdef CONFIG_PAX_EMUPLT + case 2: + case 3: + return; +#endif + + } + pax_report_fault(regs, (void *)regs->pc, (void *)rdusp()); + do_group_exit(SIGKILL); +#else goto bad_area; +#endif + + } } else if (!cause) { /* Allow reads even for write-only mappings */ if (!(vma->vm_flags & (VM_READ | VM_WRITE))) diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/arm/include/asm/elf.h linux-2.6.36.4-pax/arch/arm/include/asm/elf.h --- linux-2.6.36.4/arch/arm/include/asm/elf.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/arm/include/asm/elf.h 2010-12-14 21:18:01.000000000 +0100 @@ -113,7 +113,14 @@ int dump_task_regs(struct task_struct *t the loader. We need to make sure that it is out of the way of the program that it will "exec", and that there is sufficient room for the brk. */ -#define ELF_ET_DYN_BASE (2 * TASK_SIZE / 3) +#define ELF_ET_DYN_BASE (TASK_SIZE / 3 * 2) + +#ifdef CONFIG_PAX_ASLR +#define PAX_ELF_ET_DYN_BASE 0x00008000UL + +#define PAX_DELTA_MMAP_LEN ((current->personality == PER_LINUX_32BIT) ? 16 : 10) +#define PAX_DELTA_STACK_LEN ((current->personality == PER_LINUX_32BIT) ? 16 : 10) +#endif /* When the program starts, a1 contains a pointer to a function to be registered with atexit, as per the SVR4 ABI. A value of 0 means we @@ -123,8 +130,4 @@ int dump_task_regs(struct task_struct *t extern void elf_set_personality(const struct elf32_hdr *); #define SET_PERSONALITY(ex) elf_set_personality(&(ex)) -struct mm_struct; -extern unsigned long arch_randomize_brk(struct mm_struct *mm); -#define arch_randomize_brk arch_randomize_brk - #endif diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/arm/include/asm/kmap_types.h linux-2.6.36.4-pax/arch/arm/include/asm/kmap_types.h --- linux-2.6.36.4/arch/arm/include/asm/kmap_types.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/arm/include/asm/kmap_types.h 2010-10-27 22:58:07.000000000 +0200 @@ -21,6 +21,7 @@ enum km_type { KM_L1_CACHE, KM_L2_CACHE, KM_KDB, + KM_CLEARPAGE, KM_TYPE_NR }; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/arm/include/asm/uaccess.h linux-2.6.36.4-pax/arch/arm/include/asm/uaccess.h --- linux-2.6.36.4/arch/arm/include/asm/uaccess.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/arm/include/asm/uaccess.h 2010-10-27 22:58:07.000000000 +0200 @@ -403,6 +403,9 @@ extern unsigned long __must_check __strn static inline unsigned long __must_check copy_from_user(void *to, const void __user *from, unsigned long n) { + if ((long)n < 0) + return n; + if (access_ok(VERIFY_READ, from, n)) n = __copy_from_user(to, from, n); else /* security hole - plug it */ @@ -412,6 +415,9 @@ static inline unsigned long __must_check static inline unsigned long __must_check copy_to_user(void __user *to, const void *from, unsigned long n) { + if ((long)n < 0) + return n; + if (access_ok(VERIFY_WRITE, to, n)) n = __copy_to_user(to, from, n); return n; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/arm/kernel/kgdb.c linux-2.6.36.4-pax/arch/arm/kernel/kgdb.c --- linux-2.6.36.4/arch/arm/kernel/kgdb.c 2010-12-14 21:09:00.000000000 +0100 +++ linux-2.6.36.4-pax/arch/arm/kernel/kgdb.c 2010-12-14 21:09:07.000000000 +0100 @@ -246,7 +246,7 @@ void kgdb_arch_exit(void) * and we handle the normal undef case within the do_undefinstr * handler. */ -struct kgdb_arch arch_kgdb_ops = { +const struct kgdb_arch arch_kgdb_ops = { #ifndef __ARMEB__ .gdb_bpt_instr = {0xfe, 0xde, 0xff, 0xe7} #else /* ! __ARMEB__ */ diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/arm/kernel/process.c linux-2.6.36.4-pax/arch/arm/kernel/process.c --- linux-2.6.36.4/arch/arm/kernel/process.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/arm/kernel/process.c 2010-12-14 21:18:01.000000000 +0100 @@ -28,7 +28,6 @@ #include #include #include -#include #include #include @@ -452,9 +451,3 @@ unsigned long get_wchan(struct task_stru } while (count ++ < 16); return 0; } - -unsigned long arch_randomize_brk(struct mm_struct *mm) -{ - unsigned long range_end = mm->brk + 0x02000000; - return randomize_range(mm->brk, range_end, 0) ? : mm->brk; -} diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/arm/mach-at91/pm.c linux-2.6.36.4-pax/arch/arm/mach-at91/pm.c --- linux-2.6.36.4/arch/arm/mach-at91/pm.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/arm/mach-at91/pm.c 2010-10-27 22:58:43.000000000 +0200 @@ -294,7 +294,7 @@ static void at91_pm_end(void) } -static struct platform_suspend_ops at91_pm_ops ={ +static const struct platform_suspend_ops at91_pm_ops ={ .valid = at91_pm_valid_state, .begin = at91_pm_begin, .enter = at91_pm_enter, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/arm/mach-davinci/pm.c linux-2.6.36.4-pax/arch/arm/mach-davinci/pm.c --- linux-2.6.36.4/arch/arm/mach-davinci/pm.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/arm/mach-davinci/pm.c 2010-10-27 22:58:43.000000000 +0200 @@ -110,7 +110,7 @@ static int davinci_pm_enter(suspend_stat return ret; } -static struct platform_suspend_ops davinci_pm_ops = { +static const struct platform_suspend_ops davinci_pm_ops = { .enter = davinci_pm_enter, .valid = suspend_valid_only_mem, }; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/arm/mach-imx/pm-imx27.c linux-2.6.36.4-pax/arch/arm/mach-imx/pm-imx27.c --- linux-2.6.36.4/arch/arm/mach-imx/pm-imx27.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/arm/mach-imx/pm-imx27.c 2010-10-27 22:58:43.000000000 +0200 @@ -32,7 +32,7 @@ static int mx27_suspend_enter(suspend_st return 0; } -static struct platform_suspend_ops mx27_suspend_ops = { +static const struct platform_suspend_ops mx27_suspend_ops = { .enter = mx27_suspend_enter, .valid = suspend_valid_only_mem, }; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/arm/mach-lpc32xx/pm.c linux-2.6.36.4-pax/arch/arm/mach-lpc32xx/pm.c --- linux-2.6.36.4/arch/arm/mach-lpc32xx/pm.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/arm/mach-lpc32xx/pm.c 2010-10-27 22:58:43.000000000 +0200 @@ -123,7 +123,7 @@ static int lpc32xx_pm_enter(suspend_stat return 0; } -static struct platform_suspend_ops lpc32xx_pm_ops = { +static const struct platform_suspend_ops lpc32xx_pm_ops = { .valid = suspend_valid_only_mem, .enter = lpc32xx_pm_enter, }; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/arm/mach-msm/last_radio_log.c linux-2.6.36.4-pax/arch/arm/mach-msm/last_radio_log.c --- linux-2.6.36.4/arch/arm/mach-msm/last_radio_log.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/arm/mach-msm/last_radio_log.c 2010-10-27 22:58:43.000000000 +0200 @@ -47,6 +47,7 @@ static ssize_t last_radio_log_read(struc return count; } +/* cannot be const, see msm_init_last_radio_log */ static struct file_operations last_radio_log_fops = { .read = last_radio_log_read }; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/arm/mach-omap1/pm.c linux-2.6.36.4-pax/arch/arm/mach-omap1/pm.c --- linux-2.6.36.4/arch/arm/mach-omap1/pm.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/arm/mach-omap1/pm.c 2010-10-27 22:58:43.000000000 +0200 @@ -647,7 +647,7 @@ static struct irqaction omap_wakeup_irq -static struct platform_suspend_ops omap_pm_ops ={ +static const struct platform_suspend_ops omap_pm_ops ={ .prepare = omap_pm_prepare, .enter = omap_pm_enter, .finish = omap_pm_finish, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/arm/mach-omap2/pm24xx.c linux-2.6.36.4-pax/arch/arm/mach-omap2/pm24xx.c --- linux-2.6.36.4/arch/arm/mach-omap2/pm24xx.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/arm/mach-omap2/pm24xx.c 2010-10-27 22:58:43.000000000 +0200 @@ -324,7 +324,7 @@ static void omap2_pm_finish(void) enable_hlt(); } -static struct platform_suspend_ops omap_pm_ops = { +static const struct platform_suspend_ops omap_pm_ops = { .prepare = omap2_pm_prepare, .enter = omap2_pm_enter, .finish = omap2_pm_finish, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/arm/mach-omap2/pm34xx.c linux-2.6.36.4-pax/arch/arm/mach-omap2/pm34xx.c --- linux-2.6.36.4/arch/arm/mach-omap2/pm34xx.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/arm/mach-omap2/pm34xx.c 2010-10-27 22:58:43.000000000 +0200 @@ -672,7 +672,7 @@ static void omap3_pm_end(void) return; } -static struct platform_suspend_ops omap_pm_ops = { +static const struct platform_suspend_ops omap_pm_ops = { .begin = omap3_pm_begin, .end = omap3_pm_end, .prepare = omap3_pm_prepare, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/arm/mach-omap2/pm44xx.c linux-2.6.36.4-pax/arch/arm/mach-omap2/pm44xx.c --- linux-2.6.36.4/arch/arm/mach-omap2/pm44xx.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/arm/mach-omap2/pm44xx.c 2010-10-27 22:58:43.000000000 +0200 @@ -75,7 +75,7 @@ static void omap4_pm_end(void) return; } -static struct platform_suspend_ops omap_pm_ops = { +static const struct platform_suspend_ops omap_pm_ops = { .begin = omap4_pm_begin, .end = omap4_pm_end, .prepare = omap4_pm_prepare, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/arm/mach-pnx4008/pm.c linux-2.6.36.4-pax/arch/arm/mach-pnx4008/pm.c --- linux-2.6.36.4/arch/arm/mach-pnx4008/pm.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/arm/mach-pnx4008/pm.c 2010-10-27 22:58:44.000000000 +0200 @@ -119,7 +119,7 @@ static int pnx4008_pm_valid(suspend_stat (state == PM_SUSPEND_MEM); } -static struct platform_suspend_ops pnx4008_pm_ops = { +static const struct platform_suspend_ops pnx4008_pm_ops = { .enter = pnx4008_pm_enter, .valid = pnx4008_pm_valid, }; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/arm/mach-pxa/pm.c linux-2.6.36.4-pax/arch/arm/mach-pxa/pm.c --- linux-2.6.36.4/arch/arm/mach-pxa/pm.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/arm/mach-pxa/pm.c 2010-10-27 22:58:44.000000000 +0200 @@ -96,7 +96,7 @@ void pxa_pm_finish(void) pxa_cpu_pm_fns->finish(); } -static struct platform_suspend_ops pxa_pm_ops = { +static const struct platform_suspend_ops pxa_pm_ops = { .valid = pxa_pm_valid, .enter = pxa_pm_enter, .prepare = pxa_pm_prepare, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/arm/mach-pxa/sharpsl_pm.c linux-2.6.36.4-pax/arch/arm/mach-pxa/sharpsl_pm.c --- linux-2.6.36.4/arch/arm/mach-pxa/sharpsl_pm.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/arm/mach-pxa/sharpsl_pm.c 2010-10-27 22:58:44.000000000 +0200 @@ -868,7 +868,7 @@ static void sharpsl_apm_get_power_status } #ifdef CONFIG_PM -static struct platform_suspend_ops sharpsl_pm_ops = { +static const struct platform_suspend_ops sharpsl_pm_ops = { .prepare = pxa_pm_prepare, .finish = pxa_pm_finish, .enter = corgi_pxa_pm_enter, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/arm/mach-sa1100/pm.c linux-2.6.36.4-pax/arch/arm/mach-sa1100/pm.c --- linux-2.6.36.4/arch/arm/mach-sa1100/pm.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/arm/mach-sa1100/pm.c 2010-10-27 22:58:44.000000000 +0200 @@ -120,7 +120,7 @@ unsigned long sleep_phys_sp(void *sp) return virt_to_phys(sp); } -static struct platform_suspend_ops sa11x0_pm_ops = { +static const struct platform_suspend_ops sa11x0_pm_ops = { .enter = sa11x0_pm_enter, .valid = suspend_valid_only_mem, }; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/arm/mm/fault.c linux-2.6.36.4-pax/arch/arm/mm/fault.c --- linux-2.6.36.4/arch/arm/mm/fault.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/arm/mm/fault.c 2010-10-27 22:58:07.000000000 +0200 @@ -167,6 +167,13 @@ __do_user_fault(struct task_struct *tsk, } #endif +#ifdef CONFIG_PAX_PAGEEXEC + if (fsr & FSR_LNX_PF) { + pax_report_fault(regs, (void *)regs->ARM_pc, (void *)regs->ARM_sp); + do_group_exit(SIGKILL); + } +#endif + tsk->thread.address = addr; tsk->thread.error_code = fsr; tsk->thread.trap_no = 14; @@ -364,6 +371,33 @@ do_page_fault(unsigned long addr, unsign } #endif /* CONFIG_MMU */ +#ifdef CONFIG_PAX_PAGEEXEC +void pax_report_insns(void *pc, void *sp) +{ + long i; + + printk(KERN_ERR "PAX: bytes at PC: "); + for (i = 0; i < 20; i++) { + unsigned char c; + if (get_user(c, (__force unsigned char __user *)pc+i)) + printk(KERN_CONT "?? "); + else + printk(KERN_CONT "%02x ", c); + } + printk("\n"); + + printk(KERN_ERR "PAX: bytes at SP-4: "); + for (i = -1; i < 20; i++) { + unsigned long c; + if (get_user(c, (__force unsigned long __user *)sp+i)) + printk(KERN_CONT "???????? "); + else + printk(KERN_CONT "%08lx ", c); + } + printk("\n"); +} +#endif + /* * First Level Translation Fault Handler * diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/arm/mm/mmap.c linux-2.6.36.4-pax/arch/arm/mm/mmap.c --- linux-2.6.36.4/arch/arm/mm/mmap.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/arm/mm/mmap.c 2010-10-27 22:58:07.000000000 +0200 @@ -64,6 +64,10 @@ arch_get_unmapped_area(struct file *filp if (len > TASK_SIZE) return -ENOMEM; +#ifdef CONFIG_PAX_RANDMMAP + if (!(mm->pax_flags & MF_PAX_RANDMMAP)) +#endif + if (addr) { if (do_align) addr = COLOUR_ALIGN(addr, pgoff); @@ -71,15 +75,14 @@ arch_get_unmapped_area(struct file *filp addr = PAGE_ALIGN(addr); vma = find_vma(mm, addr); - if (TASK_SIZE - len >= addr && - (!vma || addr + len <= vma->vm_start)) + if (TASK_SIZE - len >= addr && check_heap_stack_gap(vma, addr, len)) return addr; } if (len > mm->cached_hole_size) { - start_addr = addr = mm->free_area_cache; + start_addr = addr = mm->free_area_cache; } else { - start_addr = addr = TASK_UNMAPPED_BASE; - mm->cached_hole_size = 0; + start_addr = addr = mm->mmap_base; + mm->cached_hole_size = 0; } /* 8 bits of randomness in 20 address space bits */ if (current->flags & PF_RANDOMIZE) @@ -98,14 +101,14 @@ full_search: * Start a new search - just in case we missed * some holes. */ - if (start_addr != TASK_UNMAPPED_BASE) { - start_addr = addr = TASK_UNMAPPED_BASE; + if (start_addr != mm->mmap_base) { + start_addr = addr = mm->mmap_base; mm->cached_hole_size = 0; goto full_search; } return -ENOMEM; } - if (!vma || addr + len <= vma->vm_start) { + if (check_heap_stack_gap(vma, addr, len)) { /* * Remember the place where we stopped the search: */ diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/arm/plat-samsung/pm.c linux-2.6.36.4-pax/arch/arm/plat-samsung/pm.c --- linux-2.6.36.4/arch/arm/plat-samsung/pm.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/arm/plat-samsung/pm.c 2010-10-27 22:58:44.000000000 +0200 @@ -355,7 +355,7 @@ static void s3c_pm_finish(void) s3c_pm_check_cleanup(); } -static struct platform_suspend_ops s3c_pm_ops = { +static const struct platform_suspend_ops s3c_pm_ops = { .enter = s3c_pm_enter, .prepare = s3c_pm_prepare, .finish = s3c_pm_finish, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/avr32/include/asm/elf.h linux-2.6.36.4-pax/arch/avr32/include/asm/elf.h --- linux-2.6.36.4/arch/avr32/include/asm/elf.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/avr32/include/asm/elf.h 2010-10-27 22:58:07.000000000 +0200 @@ -84,8 +84,14 @@ typedef struct user_fpu_struct elf_fpreg the loader. We need to make sure that it is out of the way of the program that it will "exec", and that there is sufficient room for the brk. */ -#define ELF_ET_DYN_BASE (2 * TASK_SIZE / 3) +#define ELF_ET_DYN_BASE (TASK_SIZE / 3 * 2) +#ifdef CONFIG_PAX_ASLR +#define PAX_ELF_ET_DYN_BASE 0x00001000UL + +#define PAX_DELTA_MMAP_LEN 15 +#define PAX_DELTA_STACK_LEN 15 +#endif /* This yields a mask that user programs can use to figure out what instruction set this CPU supports. This could be done in user space, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/avr32/include/asm/kmap_types.h linux-2.6.36.4-pax/arch/avr32/include/asm/kmap_types.h --- linux-2.6.36.4/arch/avr32/include/asm/kmap_types.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/avr32/include/asm/kmap_types.h 2010-10-27 22:58:07.000000000 +0200 @@ -22,7 +22,8 @@ D(10) KM_IRQ0, D(11) KM_IRQ1, D(12) KM_SOFTIRQ0, D(13) KM_SOFTIRQ1, -D(14) KM_TYPE_NR +D(14) KM_CLEARPAGE, +D(15) KM_TYPE_NR }; #undef D diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/avr32/mach-at32ap/pm.c linux-2.6.36.4-pax/arch/avr32/mach-at32ap/pm.c --- linux-2.6.36.4/arch/avr32/mach-at32ap/pm.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/avr32/mach-at32ap/pm.c 2010-10-27 22:58:44.000000000 +0200 @@ -176,7 +176,7 @@ out: return 0; } -static struct platform_suspend_ops avr32_pm_ops = { +static const struct platform_suspend_ops avr32_pm_ops = { .valid = avr32_pm_valid_state, .enter = avr32_pm_enter, }; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/avr32/mm/fault.c linux-2.6.36.4-pax/arch/avr32/mm/fault.c --- linux-2.6.36.4/arch/avr32/mm/fault.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/avr32/mm/fault.c 2010-10-27 22:58:07.000000000 +0200 @@ -41,6 +41,23 @@ static inline int notify_page_fault(stru int exception_trace = 1; +#ifdef CONFIG_PAX_PAGEEXEC +void pax_report_insns(void *pc, void *sp) +{ + unsigned long i; + + printk(KERN_ERR "PAX: bytes at PC: "); + for (i = 0; i < 20; i++) { + unsigned char c; + if (get_user(c, (unsigned char *)pc+i)) + printk(KERN_CONT "???????? "); + else + printk(KERN_CONT "%02x ", c); + } + printk("\n"); +} +#endif + /* * This routine handles page faults. It determines the address and the * problem, and then passes it off to one of the appropriate routines. @@ -156,6 +173,16 @@ bad_area: up_read(&mm->mmap_sem); if (user_mode(regs)) { + +#ifdef CONFIG_PAX_PAGEEXEC + if (mm->pax_flags & MF_PAX_PAGEEXEC) { + if (ecr == ECR_PROTECTION_X || ecr == ECR_TLB_MISS_X) { + pax_report_fault(regs, (void *)regs->pc, (void *)regs->sp); + do_group_exit(SIGKILL); + } + } +#endif + if (exception_trace && printk_ratelimit()) printk("%s%s[%d]: segfault at %08lx pc %08lx " "sp %08lx ecr %lu\n", diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/blackfin/kernel/kgdb.c linux-2.6.36.4-pax/arch/blackfin/kernel/kgdb.c --- linux-2.6.36.4/arch/blackfin/kernel/kgdb.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/blackfin/kernel/kgdb.c 2010-10-27 22:58:44.000000000 +0200 @@ -397,7 +397,7 @@ int kgdb_arch_handle_exception(int vecto return -1; /* this means that we do not want to exit from the handler */ } -struct kgdb_arch arch_kgdb_ops = { +const struct kgdb_arch arch_kgdb_ops = { .gdb_bpt_instr = {0xa1}, #ifdef CONFIG_SMP .flags = KGDB_HW_BREAKPOINT|KGDB_THR_PROC_SWAP, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/blackfin/mach-common/pm.c linux-2.6.36.4-pax/arch/blackfin/mach-common/pm.c --- linux-2.6.36.4/arch/blackfin/mach-common/pm.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/blackfin/mach-common/pm.c 2010-10-27 22:58:44.000000000 +0200 @@ -233,7 +233,7 @@ static int bfin_pm_enter(suspend_state_t return 0; } -struct platform_suspend_ops bfin_pm_ops = { +const struct platform_suspend_ops bfin_pm_ops = { .enter = bfin_pm_enter, .valid = bfin_pm_valid, }; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/blackfin/mm/maccess.c linux-2.6.36.4-pax/arch/blackfin/mm/maccess.c --- linux-2.6.36.4/arch/blackfin/mm/maccess.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/blackfin/mm/maccess.c 2010-10-27 22:58:44.000000000 +0200 @@ -16,7 +16,7 @@ static int validate_memory_access_addres return bfin_mem_access_type(addr, size); } -long probe_kernel_read(void *dst, void *src, size_t size) +long probe_kernel_read(void *dst, const void *src, size_t size) { unsigned long lsrc = (unsigned long)src; int mem_type; @@ -55,7 +55,7 @@ long probe_kernel_read(void *dst, void * return -EFAULT; } -long probe_kernel_write(void *dst, void *src, size_t size) +long probe_kernel_write(void *dst, const void *src, size_t size) { unsigned long ldst = (unsigned long)dst; int mem_type; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/frv/include/asm/kmap_types.h linux-2.6.36.4-pax/arch/frv/include/asm/kmap_types.h --- linux-2.6.36.4/arch/frv/include/asm/kmap_types.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/frv/include/asm/kmap_types.h 2010-10-27 22:58:07.000000000 +0200 @@ -23,6 +23,7 @@ enum km_type { KM_IRQ1, KM_SOFTIRQ0, KM_SOFTIRQ1, + KM_CLEARPAGE, KM_TYPE_NR }; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/frv/mm/elf-fdpic.c linux-2.6.36.4-pax/arch/frv/mm/elf-fdpic.c --- linux-2.6.36.4/arch/frv/mm/elf-fdpic.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/frv/mm/elf-fdpic.c 2010-10-27 22:58:07.000000000 +0200 @@ -73,8 +73,7 @@ unsigned long arch_get_unmapped_area(str if (addr) { addr = PAGE_ALIGN(addr); vma = find_vma(current->mm, addr); - if (TASK_SIZE - len >= addr && - (!vma || addr + len <= vma->vm_start)) + if (TASK_SIZE - len >= addr && check_heap_stack_gap(vma, addr, len)) goto success; } @@ -89,7 +88,7 @@ unsigned long arch_get_unmapped_area(str for (; vma; vma = vma->vm_next) { if (addr > limit) break; - if (addr + len <= vma->vm_start) + if (check_heap_stack_gap(vma, addr, len)) goto success; addr = vma->vm_end; } @@ -104,7 +103,7 @@ unsigned long arch_get_unmapped_area(str for (; vma; vma = vma->vm_next) { if (addr > limit) break; - if (addr + len <= vma->vm_start) + if (check_heap_stack_gap(vma, addr, len)) goto success; addr = vma->vm_end; } diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/ia64/hp/common/hwsw_iommu.c linux-2.6.36.4-pax/arch/ia64/hp/common/hwsw_iommu.c --- linux-2.6.36.4/arch/ia64/hp/common/hwsw_iommu.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/ia64/hp/common/hwsw_iommu.c 2010-10-27 22:58:44.000000000 +0200 @@ -17,7 +17,7 @@ #include #include -extern struct dma_map_ops sba_dma_ops, swiotlb_dma_ops; +extern const struct dma_map_ops sba_dma_ops, swiotlb_dma_ops; /* swiotlb declarations & definitions: */ extern int swiotlb_late_init_with_default_size (size_t size); @@ -33,7 +33,7 @@ static inline int use_swiotlb(struct dev !sba_dma_ops.dma_supported(dev, *dev->dma_mask); } -struct dma_map_ops *hwsw_dma_get_ops(struct device *dev) +const struct dma_map_ops *hwsw_dma_get_ops(struct device *dev) { if (use_swiotlb(dev)) return &swiotlb_dma_ops; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/ia64/hp/common/sba_iommu.c linux-2.6.36.4-pax/arch/ia64/hp/common/sba_iommu.c --- linux-2.6.36.4/arch/ia64/hp/common/sba_iommu.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/ia64/hp/common/sba_iommu.c 2010-10-27 22:58:44.000000000 +0200 @@ -2097,7 +2097,7 @@ static struct acpi_driver acpi_sba_ioc_d }, }; -extern struct dma_map_ops swiotlb_dma_ops; +extern const struct dma_map_ops swiotlb_dma_ops; static int __init sba_init(void) @@ -2211,7 +2211,7 @@ sba_page_override(char *str) __setup("sbapagesize=",sba_page_override); -struct dma_map_ops sba_dma_ops = { +const struct dma_map_ops sba_dma_ops = { .alloc_coherent = sba_alloc_coherent, .free_coherent = sba_free_coherent, .map_page = sba_map_page, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/ia64/include/asm/dma-mapping.h linux-2.6.36.4-pax/arch/ia64/include/asm/dma-mapping.h --- linux-2.6.36.4/arch/ia64/include/asm/dma-mapping.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/ia64/include/asm/dma-mapping.h 2010-10-27 22:58:44.000000000 +0200 @@ -12,7 +12,7 @@ #define ARCH_HAS_DMA_GET_REQUIRED_MASK -extern struct dma_map_ops *dma_ops; +extern const struct dma_map_ops *dma_ops; extern struct ia64_machine_vector ia64_mv; extern void set_iommu_machvec(void); @@ -24,7 +24,7 @@ extern void machvec_dma_sync_sg(struct d static inline void *dma_alloc_coherent(struct device *dev, size_t size, dma_addr_t *daddr, gfp_t gfp) { - struct dma_map_ops *ops = platform_dma_get_ops(dev); + const struct dma_map_ops *ops = platform_dma_get_ops(dev); void *caddr; caddr = ops->alloc_coherent(dev, size, daddr, gfp); @@ -35,7 +35,7 @@ static inline void *dma_alloc_coherent(s static inline void dma_free_coherent(struct device *dev, size_t size, void *caddr, dma_addr_t daddr) { - struct dma_map_ops *ops = platform_dma_get_ops(dev); + const struct dma_map_ops *ops = platform_dma_get_ops(dev); debug_dma_free_coherent(dev, size, caddr, daddr); ops->free_coherent(dev, size, caddr, daddr); } @@ -49,13 +49,13 @@ static inline void dma_free_coherent(str static inline int dma_mapping_error(struct device *dev, dma_addr_t daddr) { - struct dma_map_ops *ops = platform_dma_get_ops(dev); + const struct dma_map_ops *ops = platform_dma_get_ops(dev); return ops->mapping_error(dev, daddr); } static inline int dma_supported(struct device *dev, u64 mask) { - struct dma_map_ops *ops = platform_dma_get_ops(dev); + const struct dma_map_ops *ops = platform_dma_get_ops(dev); return ops->dma_supported(dev, mask); } diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/ia64/include/asm/elf.h linux-2.6.36.4-pax/arch/ia64/include/asm/elf.h --- linux-2.6.36.4/arch/ia64/include/asm/elf.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/ia64/include/asm/elf.h 2010-10-27 22:58:07.000000000 +0200 @@ -42,6 +42,13 @@ */ #define ELF_ET_DYN_BASE (TASK_UNMAPPED_BASE + 0x800000000UL) +#ifdef CONFIG_PAX_ASLR +#define PAX_ELF_ET_DYN_BASE (current->personality == PER_LINUX32 ? 0x08048000UL : 0x4000000000000000UL) + +#define PAX_DELTA_MMAP_LEN (current->personality == PER_LINUX32 ? 16 : 3*PAGE_SHIFT - 13) +#define PAX_DELTA_STACK_LEN (current->personality == PER_LINUX32 ? 16 : 3*PAGE_SHIFT - 13) +#endif + #define PT_IA_64_UNWIND 0x70000001 /* IA-64 relocations: */ diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/ia64/include/asm/machvec.h linux-2.6.36.4-pax/arch/ia64/include/asm/machvec.h --- linux-2.6.36.4/arch/ia64/include/asm/machvec.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/ia64/include/asm/machvec.h 2010-10-27 22:58:44.000000000 +0200 @@ -45,7 +45,7 @@ typedef void ia64_mv_kernel_launch_event /* DMA-mapping interface: */ typedef void ia64_mv_dma_init (void); typedef u64 ia64_mv_dma_get_required_mask (struct device *); -typedef struct dma_map_ops *ia64_mv_dma_get_ops(struct device *); +typedef const struct dma_map_ops *ia64_mv_dma_get_ops(struct device *); /* * WARNING: The legacy I/O space is _architected_. Platforms are @@ -251,7 +251,7 @@ extern void machvec_init_from_cmdline(co # endif /* CONFIG_IA64_GENERIC */ extern void swiotlb_dma_init(void); -extern struct dma_map_ops *dma_get_ops(struct device *); +extern const struct dma_map_ops *dma_get_ops(struct device *); /* * Define default versions so we can extend machvec for new platforms without having diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/ia64/include/asm/pgtable.h linux-2.6.36.4-pax/arch/ia64/include/asm/pgtable.h --- linux-2.6.36.4/arch/ia64/include/asm/pgtable.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/ia64/include/asm/pgtable.h 2010-10-27 22:58:07.000000000 +0200 @@ -12,7 +12,7 @@ * David Mosberger-Tang */ - +#include #include #include #include @@ -143,6 +143,17 @@ #define PAGE_READONLY __pgprot(__ACCESS_BITS | _PAGE_PL_3 | _PAGE_AR_R) #define PAGE_COPY __pgprot(__ACCESS_BITS | _PAGE_PL_3 | _PAGE_AR_R) #define PAGE_COPY_EXEC __pgprot(__ACCESS_BITS | _PAGE_PL_3 | _PAGE_AR_RX) + +#ifdef CONFIG_PAX_PAGEEXEC +# define PAGE_SHARED_NOEXEC __pgprot(__ACCESS_BITS | _PAGE_PL_3 | _PAGE_AR_RW) +# define PAGE_READONLY_NOEXEC __pgprot(__ACCESS_BITS | _PAGE_PL_3 | _PAGE_AR_R) +# define PAGE_COPY_NOEXEC __pgprot(__ACCESS_BITS | _PAGE_PL_3 | _PAGE_AR_R) +#else +# define PAGE_SHARED_NOEXEC PAGE_SHARED +# define PAGE_READONLY_NOEXEC PAGE_READONLY +# define PAGE_COPY_NOEXEC PAGE_COPY +#endif + #define PAGE_GATE __pgprot(__ACCESS_BITS | _PAGE_PL_0 | _PAGE_AR_X_RX) #define PAGE_KERNEL __pgprot(__DIRTY_BITS | _PAGE_PL_0 | _PAGE_AR_RWX) #define PAGE_KERNELRX __pgprot(__ACCESS_BITS | _PAGE_PL_0 | _PAGE_AR_RX) diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/ia64/include/asm/spinlock.h linux-2.6.36.4-pax/arch/ia64/include/asm/spinlock.h --- linux-2.6.36.4/arch/ia64/include/asm/spinlock.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/ia64/include/asm/spinlock.h 2011-02-08 16:31:44.000000000 +0100 @@ -72,7 +72,7 @@ static __always_inline void __ticket_spi unsigned short *p = (unsigned short *)&lock->lock + 1, tmp; asm volatile ("ld2.bias %0=[%1]" : "=r"(tmp) : "r"(p)); - ACCESS_ONCE(*p) = (tmp + 2) & ~1; + ACCESS_ONCE_RW(*p) = (tmp + 2) & ~1; } static __always_inline void __ticket_spin_unlock_wait(arch_spinlock_t *lock) diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/ia64/include/asm/uaccess.h linux-2.6.36.4-pax/arch/ia64/include/asm/uaccess.h --- linux-2.6.36.4/arch/ia64/include/asm/uaccess.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/ia64/include/asm/uaccess.h 2010-10-27 22:58:07.000000000 +0200 @@ -257,7 +257,7 @@ __copy_from_user (void *to, const void _ const void *__cu_from = (from); \ long __cu_len = (n); \ \ - if (__access_ok(__cu_to, __cu_len, get_fs())) \ + if (__cu_len > 0 && __cu_len <= INT_MAX && __access_ok(__cu_to, __cu_len, get_fs())) \ __cu_len = __copy_user(__cu_to, (__force void __user *) __cu_from, __cu_len); \ __cu_len; \ }) @@ -269,7 +269,7 @@ __copy_from_user (void *to, const void _ long __cu_len = (n); \ \ __chk_user_ptr(__cu_from); \ - if (__access_ok(__cu_from, __cu_len, get_fs())) \ + if (__cu_len > 0 && __cu_len <= INT_MAX && __access_ok(__cu_from, __cu_len, get_fs())) \ __cu_len = __copy_user((__force void __user *) __cu_to, __cu_from, __cu_len); \ __cu_len; \ }) diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/ia64/kernel/dma-mapping.c linux-2.6.36.4-pax/arch/ia64/kernel/dma-mapping.c --- linux-2.6.36.4/arch/ia64/kernel/dma-mapping.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/ia64/kernel/dma-mapping.c 2010-10-27 22:58:44.000000000 +0200 @@ -3,7 +3,7 @@ /* Set this to 1 if there is a HW IOMMU in the system */ int iommu_detected __read_mostly; -struct dma_map_ops *dma_ops; +const struct dma_map_ops *dma_ops; EXPORT_SYMBOL(dma_ops); #define PREALLOC_DMA_DEBUG_ENTRIES (1 << 16) @@ -16,7 +16,7 @@ static int __init dma_init(void) } fs_initcall(dma_init); -struct dma_map_ops *dma_get_ops(struct device *dev) +const struct dma_map_ops *dma_get_ops(struct device *dev) { return dma_ops; } diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/ia64/kernel/module.c linux-2.6.36.4-pax/arch/ia64/kernel/module.c --- linux-2.6.36.4/arch/ia64/kernel/module.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/ia64/kernel/module.c 2010-10-27 22:58:07.000000000 +0200 @@ -315,8 +315,7 @@ module_alloc (unsigned long size) void module_free (struct module *mod, void *module_region) { - if (mod && mod->arch.init_unw_table && - module_region == mod->module_init) { + if (mod && mod->arch.init_unw_table && module_region == mod->module_init_rx) { unw_remove_unwind_table(mod->arch.init_unw_table); mod->arch.init_unw_table = NULL; } @@ -502,15 +501,39 @@ module_frob_arch_sections (Elf_Ehdr *ehd } static inline int +in_init_rx (const struct module *mod, uint64_t addr) +{ + return addr - (uint64_t) mod->module_init_rx < mod->init_size_rx; +} + +static inline int +in_init_rw (const struct module *mod, uint64_t addr) +{ + return addr - (uint64_t) mod->module_init_rw < mod->init_size_rw; +} + +static inline int in_init (const struct module *mod, uint64_t addr) { - return addr - (uint64_t) mod->module_init < mod->init_size; + return in_init_rx(mod, addr) || in_init_rw(mod, addr); +} + +static inline int +in_core_rx (const struct module *mod, uint64_t addr) +{ + return addr - (uint64_t) mod->module_core_rx < mod->core_size_rx; +} + +static inline int +in_core_rw (const struct module *mod, uint64_t addr) +{ + return addr - (uint64_t) mod->module_core_rw < mod->core_size_rw; } static inline int in_core (const struct module *mod, uint64_t addr) { - return addr - (uint64_t) mod->module_core < mod->core_size; + return in_core_rx(mod, addr) || in_core_rw(mod, addr); } static inline int @@ -693,7 +716,14 @@ do_reloc (struct module *mod, uint8_t r_ break; case RV_BDREL: - val -= (uint64_t) (in_init(mod, val) ? mod->module_init : mod->module_core); + if (in_init_rx(mod, val)) + val -= (uint64_t) mod->module_init_rx; + else if (in_init_rw(mod, val)) + val -= (uint64_t) mod->module_init_rw; + else if (in_core_rx(mod, val)) + val -= (uint64_t) mod->module_core_rx; + else if (in_core_rw(mod, val)) + val -= (uint64_t) mod->module_core_rw; break; case RV_LTV: @@ -828,15 +858,15 @@ apply_relocate_add (Elf64_Shdr *sechdrs, * addresses have been selected... */ uint64_t gp; - if (mod->core_size > MAX_LTOFF) + if (mod->core_size_rx + mod->core_size_rw > MAX_LTOFF) /* * This takes advantage of fact that SHF_ARCH_SMALL gets allocated * at the end of the module. */ - gp = mod->core_size - MAX_LTOFF / 2; + gp = mod->core_size_rx + mod->core_size_rw - MAX_LTOFF / 2; else - gp = mod->core_size / 2; - gp = (uint64_t) mod->module_core + ((gp + 7) & -8); + gp = (mod->core_size_rx + mod->core_size_rw) / 2; + gp = (uint64_t) mod->module_core_rx + ((gp + 7) & -8); mod->arch.gp = gp; DEBUGP("%s: placing gp at 0x%lx\n", __func__, gp); } diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/ia64/kernel/pci-dma.c linux-2.6.36.4-pax/arch/ia64/kernel/pci-dma.c --- linux-2.6.36.4/arch/ia64/kernel/pci-dma.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/ia64/kernel/pci-dma.c 2010-10-27 22:58:44.000000000 +0200 @@ -43,7 +43,7 @@ struct device fallback_dev = { .dma_mask = &fallback_dev.coherent_dma_mask, }; -extern struct dma_map_ops intel_dma_ops; +extern const struct dma_map_ops intel_dma_ops; static int __init pci_iommu_init(void) { diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/ia64/kernel/pci-swiotlb.c linux-2.6.36.4-pax/arch/ia64/kernel/pci-swiotlb.c --- linux-2.6.36.4/arch/ia64/kernel/pci-swiotlb.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/ia64/kernel/pci-swiotlb.c 2010-10-27 22:58:44.000000000 +0200 @@ -22,7 +22,7 @@ static void *ia64_swiotlb_alloc_coherent return swiotlb_alloc_coherent(dev, size, dma_handle, gfp); } -struct dma_map_ops swiotlb_dma_ops = { +const struct dma_map_ops swiotlb_dma_ops = { .alloc_coherent = ia64_swiotlb_alloc_coherent, .free_coherent = swiotlb_free_coherent, .map_page = swiotlb_map_page, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/ia64/kernel/sys_ia64.c linux-2.6.36.4-pax/arch/ia64/kernel/sys_ia64.c --- linux-2.6.36.4/arch/ia64/kernel/sys_ia64.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/ia64/kernel/sys_ia64.c 2010-10-27 22:58:07.000000000 +0200 @@ -43,6 +43,13 @@ arch_get_unmapped_area (struct file *fil if (REGION_NUMBER(addr) == RGN_HPAGE) addr = 0; #endif + +#ifdef CONFIG_PAX_RANDMMAP + if (mm->pax_flags & MF_PAX_RANDMMAP) + addr = mm->free_area_cache; + else +#endif + if (!addr) addr = mm->free_area_cache; @@ -61,14 +68,14 @@ arch_get_unmapped_area (struct file *fil for (vma = find_vma(mm, addr); ; vma = vma->vm_next) { /* At this point: (!vma || addr < vma->vm_end). */ if (TASK_SIZE - len < addr || RGN_MAP_LIMIT - len < REGION_OFFSET(addr)) { - if (start_addr != TASK_UNMAPPED_BASE) { + if (start_addr != mm->mmap_base) { /* Start a new search --- just in case we missed some holes. */ - addr = TASK_UNMAPPED_BASE; + addr = mm->mmap_base; goto full_search; } return -ENOMEM; } - if (!vma || addr + len <= vma->vm_start) { + if (check_heap_stack_gap(vma, addr, len)) { /* Remember the address where we stopped this search: */ mm->free_area_cache = addr + len; return addr; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/ia64/kernel/vmlinux.lds.S linux-2.6.36.4-pax/arch/ia64/kernel/vmlinux.lds.S --- linux-2.6.36.4/arch/ia64/kernel/vmlinux.lds.S 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/ia64/kernel/vmlinux.lds.S 2010-10-27 22:58:07.000000000 +0200 @@ -199,7 +199,7 @@ SECTIONS { /* Per-cpu data: */ . = ALIGN(PERCPU_PAGE_SIZE); PERCPU_VADDR(PERCPU_ADDR, :percpu) - __phys_per_cpu_start = __per_cpu_load; + __phys_per_cpu_start = per_cpu_load; /* * ensure percpu data fits * into percpu page size diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/ia64/mm/fault.c linux-2.6.36.4-pax/arch/ia64/mm/fault.c --- linux-2.6.36.4/arch/ia64/mm/fault.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/ia64/mm/fault.c 2010-10-27 22:58:07.000000000 +0200 @@ -72,6 +72,23 @@ mapped_kernel_page_is_present (unsigned return pte_present(pte); } +#ifdef CONFIG_PAX_PAGEEXEC +void pax_report_insns(void *pc, void *sp) +{ + unsigned long i; + + printk(KERN_ERR "PAX: bytes at PC: "); + for (i = 0; i < 8; i++) { + unsigned int c; + if (get_user(c, (unsigned int *)pc+i)) + printk(KERN_CONT "???????? "); + else + printk(KERN_CONT "%08x ", c); + } + printk("\n"); +} +#endif + void __kprobes ia64_do_page_fault (unsigned long address, unsigned long isr, struct pt_regs *regs) { @@ -145,9 +162,23 @@ ia64_do_page_fault (unsigned long addres mask = ( (((isr >> IA64_ISR_X_BIT) & 1UL) << VM_EXEC_BIT) | (((isr >> IA64_ISR_W_BIT) & 1UL) << VM_WRITE_BIT)); - if ((vma->vm_flags & mask) != mask) + if ((vma->vm_flags & mask) != mask) { + +#ifdef CONFIG_PAX_PAGEEXEC + if (!(vma->vm_flags & VM_EXEC) && (mask & VM_EXEC)) { + if (!(mm->pax_flags & MF_PAX_PAGEEXEC) || address != regs->cr_iip) + goto bad_area; + + up_read(&mm->mmap_sem); + pax_report_fault(regs, (void *)regs->cr_iip, (void *)regs->r12); + do_group_exit(SIGKILL); + } +#endif + goto bad_area; + } + /* * If for any reason at all we couldn't handle the fault, make * sure we exit gracefully rather than endlessly redo the diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/ia64/mm/hugetlbpage.c linux-2.6.36.4-pax/arch/ia64/mm/hugetlbpage.c --- linux-2.6.36.4/arch/ia64/mm/hugetlbpage.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/ia64/mm/hugetlbpage.c 2010-10-27 22:58:07.000000000 +0200 @@ -171,7 +171,7 @@ unsigned long hugetlb_get_unmapped_area( /* At this point: (!vmm || addr < vmm->vm_end). */ if (REGION_OFFSET(addr) + len > RGN_MAP_LIMIT) return -ENOMEM; - if (!vmm || (addr + len) <= vmm->vm_start) + if (check_heap_stack_gap(vmm, addr, len)) return addr; addr = ALIGN(vmm->vm_end, HPAGE_SIZE); } diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/ia64/mm/init.c linux-2.6.36.4-pax/arch/ia64/mm/init.c --- linux-2.6.36.4/arch/ia64/mm/init.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/ia64/mm/init.c 2010-10-27 22:58:07.000000000 +0200 @@ -122,6 +122,19 @@ ia64_init_addr_space (void) vma->vm_start = current->thread.rbs_bot & PAGE_MASK; vma->vm_end = vma->vm_start + PAGE_SIZE; vma->vm_flags = VM_DATA_DEFAULT_FLAGS|VM_GROWSUP|VM_ACCOUNT; + +#ifdef CONFIG_PAX_PAGEEXEC + if (current->mm->pax_flags & MF_PAX_PAGEEXEC) { + vma->vm_flags &= ~VM_EXEC; + +#ifdef CONFIG_PAX_MPROTECT + if (current->mm->pax_flags & MF_PAX_MPROTECT) + vma->vm_flags &= ~VM_MAYEXEC; +#endif + + } +#endif + vma->vm_page_prot = vm_get_page_prot(vma->vm_flags); down_write(¤t->mm->mmap_sem); if (insert_vm_struct(current->mm, vma)) { diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/ia64/sn/pci/pci_dma.c linux-2.6.36.4-pax/arch/ia64/sn/pci/pci_dma.c --- linux-2.6.36.4/arch/ia64/sn/pci/pci_dma.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/ia64/sn/pci/pci_dma.c 2010-10-27 22:58:44.000000000 +0200 @@ -465,7 +465,7 @@ int sn_pci_legacy_write(struct pci_bus * return ret; } -static struct dma_map_ops sn_dma_ops = { +static const struct dma_map_ops sn_dma_ops = { .alloc_coherent = sn_dma_alloc_coherent, .free_coherent = sn_dma_free_coherent, .map_page = sn_dma_map_page, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/m32r/lib/usercopy.c linux-2.6.36.4-pax/arch/m32r/lib/usercopy.c --- linux-2.6.36.4/arch/m32r/lib/usercopy.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/m32r/lib/usercopy.c 2010-10-27 22:58:07.000000000 +0200 @@ -14,6 +14,9 @@ unsigned long __generic_copy_to_user(void __user *to, const void *from, unsigned long n) { + if ((long)n < 0) + return n; + prefetch(from); if (access_ok(VERIFY_WRITE, to, n)) __copy_user(to,from,n); @@ -23,6 +26,9 @@ __generic_copy_to_user(void __user *to, unsigned long __generic_copy_from_user(void *to, const void __user *from, unsigned long n) { + if ((long)n < 0) + return n; + prefetchw(to); if (access_ok(VERIFY_READ, from, n)) __copy_user_zeroing(to,from,n); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/microblaze/include/asm/device.h linux-2.6.36.4-pax/arch/microblaze/include/asm/device.h --- linux-2.6.36.4/arch/microblaze/include/asm/device.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/microblaze/include/asm/device.h 2010-10-27 22:58:44.000000000 +0200 @@ -13,7 +13,7 @@ struct device_node; struct dev_archdata { /* DMA operations on that device */ - struct dma_map_ops *dma_ops; + const struct dma_map_ops *dma_ops; void *dma_data; }; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/microblaze/include/asm/dma-mapping.h linux-2.6.36.4-pax/arch/microblaze/include/asm/dma-mapping.h --- linux-2.6.36.4/arch/microblaze/include/asm/dma-mapping.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/microblaze/include/asm/dma-mapping.h 2010-10-27 22:58:44.000000000 +0200 @@ -43,14 +43,14 @@ static inline unsigned long device_to_ma return 0xfffffffful; } -extern struct dma_map_ops *dma_ops; +extern const struct dma_map_ops *dma_ops; /* * Available generic sets of operations */ -extern struct dma_map_ops dma_direct_ops; +extern const struct dma_map_ops dma_direct_ops; -static inline struct dma_map_ops *get_dma_ops(struct device *dev) +static inline const struct dma_map_ops *get_dma_ops(struct device *dev) { /* We don't handle the NULL dev case for ISA for now. We could * do it via an out of line call but it is not needed for now. The @@ -63,14 +63,14 @@ static inline struct dma_map_ops *get_dm return dev->archdata.dma_ops; } -static inline void set_dma_ops(struct device *dev, struct dma_map_ops *ops) +static inline void set_dma_ops(struct device *dev, const struct dma_map_ops *ops) { dev->archdata.dma_ops = ops; } static inline int dma_supported(struct device *dev, u64 mask) { - struct dma_map_ops *ops = get_dma_ops(dev); + const struct dma_map_ops *ops = get_dma_ops(dev); if (unlikely(!ops)) return 0; @@ -81,7 +81,7 @@ static inline int dma_supported(struct d static inline int dma_set_mask(struct device *dev, u64 dma_mask) { - struct dma_map_ops *ops = get_dma_ops(dev); + const struct dma_map_ops *ops = get_dma_ops(dev); if (unlikely(ops == NULL)) return -EIO; @@ -97,7 +97,7 @@ static inline int dma_set_mask(struct de static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr) { - struct dma_map_ops *ops = get_dma_ops(dev); + const struct dma_map_ops *ops = get_dma_ops(dev); if (ops->mapping_error) return ops->mapping_error(dev, dma_addr); @@ -110,7 +110,7 @@ static inline int dma_mapping_error(stru static inline void *dma_alloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_handle, gfp_t flag) { - struct dma_map_ops *ops = get_dma_ops(dev); + const struct dma_map_ops *ops = get_dma_ops(dev); void *memory; BUG_ON(!ops); @@ -124,7 +124,7 @@ static inline void *dma_alloc_coherent(s static inline void dma_free_coherent(struct device *dev, size_t size, void *cpu_addr, dma_addr_t dma_handle) { - struct dma_map_ops *ops = get_dma_ops(dev); + const struct dma_map_ops *ops = get_dma_ops(dev); BUG_ON(!ops); debug_dma_free_coherent(dev, size, cpu_addr, dma_handle); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/microblaze/include/asm/pci.h linux-2.6.36.4-pax/arch/microblaze/include/asm/pci.h --- linux-2.6.36.4/arch/microblaze/include/asm/pci.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/microblaze/include/asm/pci.h 2010-10-27 22:58:44.000000000 +0200 @@ -54,8 +54,8 @@ static inline void pcibios_penalize_isa_ } #ifdef CONFIG_PCI -extern void set_pci_dma_ops(struct dma_map_ops *dma_ops); -extern struct dma_map_ops *get_pci_dma_ops(void); +extern void set_pci_dma_ops(const struct dma_map_ops *dma_ops); +extern const struct dma_map_ops *get_pci_dma_ops(void); #else /* CONFIG_PCI */ #define set_pci_dma_ops(d) #define get_pci_dma_ops() NULL diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/microblaze/kernel/dma.c linux-2.6.36.4-pax/arch/microblaze/kernel/dma.c --- linux-2.6.36.4/arch/microblaze/kernel/dma.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/microblaze/kernel/dma.c 2010-10-27 22:58:44.000000000 +0200 @@ -133,7 +133,7 @@ static inline void dma_direct_unmap_page __dma_sync_page(dma_address, 0 , size, direction); } -struct dma_map_ops dma_direct_ops = { +const struct dma_map_ops dma_direct_ops = { .alloc_coherent = dma_direct_alloc_coherent, .free_coherent = dma_direct_free_coherent, .map_sg = dma_direct_map_sg, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/microblaze/kernel/kgdb.c linux-2.6.36.4-pax/arch/microblaze/kernel/kgdb.c --- linux-2.6.36.4/arch/microblaze/kernel/kgdb.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/microblaze/kernel/kgdb.c 2010-10-27 22:58:44.000000000 +0200 @@ -142,6 +142,6 @@ void kgdb_arch_exit(void) /* * Global data */ -struct kgdb_arch arch_kgdb_ops = { +const struct kgdb_arch arch_kgdb_ops = { .gdb_bpt_instr = {0xba, 0x0c, 0x00, 0x18}, /* brki r16, 0x18 */ }; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/microblaze/pci/pci-common.c linux-2.6.36.4-pax/arch/microblaze/pci/pci-common.c --- linux-2.6.36.4/arch/microblaze/pci/pci-common.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/microblaze/pci/pci-common.c 2010-10-27 22:58:44.000000000 +0200 @@ -47,14 +47,14 @@ resource_size_t isa_mem_base; /* Default PCI flags is 0 on ppc32, modified at boot on ppc64 */ unsigned int pci_flags; -static struct dma_map_ops *pci_dma_ops = &dma_direct_ops; +static const struct dma_map_ops *pci_dma_ops = &dma_direct_ops; -void set_pci_dma_ops(struct dma_map_ops *dma_ops) +void set_pci_dma_ops(const struct dma_map_ops *dma_ops) { pci_dma_ops = dma_ops; } -struct dma_map_ops *get_pci_dma_ops(void) +const struct dma_map_ops *get_pci_dma_ops(void) { return pci_dma_ops; } diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/mips/alchemy/devboards/pm.c linux-2.6.36.4-pax/arch/mips/alchemy/devboards/pm.c --- linux-2.6.36.4/arch/mips/alchemy/devboards/pm.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/mips/alchemy/devboards/pm.c 2010-10-27 22:58:44.000000000 +0200 @@ -110,7 +110,7 @@ static void db1x_pm_end(void) } -static struct platform_suspend_ops db1x_pm_ops = { +static const struct platform_suspend_ops db1x_pm_ops = { .valid = suspend_valid_only_mem, .begin = db1x_pm_begin, .enter = db1x_pm_enter, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/mips/include/asm/elf.h linux-2.6.36.4-pax/arch/mips/include/asm/elf.h --- linux-2.6.36.4/arch/mips/include/asm/elf.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/mips/include/asm/elf.h 2010-12-14 21:18:01.000000000 +0100 @@ -368,13 +368,16 @@ extern const char *__elf_platform; #define ELF_ET_DYN_BASE (TASK_SIZE / 3 * 2) #endif +#ifdef CONFIG_PAX_ASLR +#define PAX_ELF_ET_DYN_BASE (test_thread_flag(TIF_32BIT_ADDR) ? 0x00400000UL : 0x00400000UL) + +#define PAX_DELTA_MMAP_LEN (test_thread_flag(TIF_32BIT_ADDR) ? 27-PAGE_SHIFT : 36-PAGE_SHIFT) +#define PAX_DELTA_STACK_LEN (test_thread_flag(TIF_32BIT_ADDR) ? 27-PAGE_SHIFT : 36-PAGE_SHIFT) +#endif + #define ARCH_HAS_SETUP_ADDITIONAL_PAGES 1 struct linux_binprm; extern int arch_setup_additional_pages(struct linux_binprm *bprm, int uses_interp); -struct mm_struct; -extern unsigned long arch_randomize_brk(struct mm_struct *mm); -#define arch_randomize_brk arch_randomize_brk - #endif /* _ASM_ELF_H */ diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/mips/include/asm/page.h linux-2.6.36.4-pax/arch/mips/include/asm/page.h --- linux-2.6.36.4/arch/mips/include/asm/page.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/mips/include/asm/page.h 2010-10-27 22:58:07.000000000 +0200 @@ -93,7 +93,7 @@ extern void copy_user_highpage(struct pa #ifdef CONFIG_CPU_MIPS32 typedef struct { unsigned long pte_low, pte_high; } pte_t; #define pte_val(x) ((x).pte_low | ((unsigned long long)(x).pte_high << 32)) - #define __pte(x) ({ pte_t __pte = {(x), ((unsigned long long)(x)) >> 32}; __pte; }) + #define __pte(x) ({ pte_t __pte = {(x), (x) >> 32}; __pte; }) #else typedef struct { unsigned long long pte; } pte_t; #define pte_val(x) ((x).pte) diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/mips/include/asm/system.h linux-2.6.36.4-pax/arch/mips/include/asm/system.h --- linux-2.6.36.4/arch/mips/include/asm/system.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/mips/include/asm/system.h 2010-12-14 21:18:01.000000000 +0100 @@ -23,6 +23,7 @@ #include #include #include +#include /* @@ -234,6 +235,6 @@ extern void per_cpu_trap_init(void); */ #define __ARCH_WANT_UNLOCKED_CTXSW -extern unsigned long arch_align_stack(unsigned long sp); +#define arch_align_stack(x) ((x) & ALMASK) #endif /* _ASM_SYSTEM_H */ diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/mips/jz4740/pm.c linux-2.6.36.4-pax/arch/mips/jz4740/pm.c --- linux-2.6.36.4/arch/mips/jz4740/pm.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/mips/jz4740/pm.c 2010-10-27 22:58:44.000000000 +0200 @@ -42,7 +42,7 @@ static int jz4740_pm_enter(suspend_state return 0; } -static struct platform_suspend_ops jz4740_pm_ops = { +static const struct platform_suspend_ops jz4740_pm_ops = { .valid = suspend_valid_only_mem, .enter = jz4740_pm_enter, }; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/mips/kernel/binfmt_elfn32.c linux-2.6.36.4-pax/arch/mips/kernel/binfmt_elfn32.c --- linux-2.6.36.4/arch/mips/kernel/binfmt_elfn32.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/mips/kernel/binfmt_elfn32.c 2010-10-27 22:58:07.000000000 +0200 @@ -50,6 +50,13 @@ typedef elf_fpreg_t elf_fpregset_t[ELF_N #undef ELF_ET_DYN_BASE #define ELF_ET_DYN_BASE (TASK32_SIZE / 3 * 2) +#ifdef CONFIG_PAX_ASLR +#define PAX_ELF_ET_DYN_BASE (test_thread_flag(TIF_32BIT_ADDR) ? 0x00400000UL : 0x00400000UL) + +#define PAX_DELTA_MMAP_LEN (test_thread_flag(TIF_32BIT_ADDR) ? 27-PAGE_SHIFT : 36-PAGE_SHIFT) +#define PAX_DELTA_STACK_LEN (test_thread_flag(TIF_32BIT_ADDR) ? 27-PAGE_SHIFT : 36-PAGE_SHIFT) +#endif + #include #include #include diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/mips/kernel/binfmt_elfo32.c linux-2.6.36.4-pax/arch/mips/kernel/binfmt_elfo32.c --- linux-2.6.36.4/arch/mips/kernel/binfmt_elfo32.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/mips/kernel/binfmt_elfo32.c 2010-10-27 22:58:07.000000000 +0200 @@ -52,6 +52,13 @@ typedef elf_fpreg_t elf_fpregset_t[ELF_N #undef ELF_ET_DYN_BASE #define ELF_ET_DYN_BASE (TASK32_SIZE / 3 * 2) +#ifdef CONFIG_PAX_ASLR +#define PAX_ELF_ET_DYN_BASE (test_thread_flag(TIF_32BIT_ADDR) ? 0x00400000UL : 0x00400000UL) + +#define PAX_DELTA_MMAP_LEN (test_thread_flag(TIF_32BIT_ADDR) ? 27-PAGE_SHIFT : 36-PAGE_SHIFT) +#define PAX_DELTA_STACK_LEN (test_thread_flag(TIF_32BIT_ADDR) ? 27-PAGE_SHIFT : 36-PAGE_SHIFT) +#endif + #include /* diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/mips/kernel/kgdb.c linux-2.6.36.4-pax/arch/mips/kernel/kgdb.c --- linux-2.6.36.4/arch/mips/kernel/kgdb.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/mips/kernel/kgdb.c 2010-10-27 22:58:44.000000000 +0200 @@ -351,6 +351,7 @@ int kgdb_arch_handle_exception(int vecto return -1; } +/* cannot be const, see kgdb_arch_init */ struct kgdb_arch arch_kgdb_ops; /* diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/mips/kernel/process.c linux-2.6.36.4-pax/arch/mips/kernel/process.c --- linux-2.6.36.4/arch/mips/kernel/process.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/mips/kernel/process.c 2010-10-27 22:58:07.000000000 +0200 @@ -474,15 +474,3 @@ unsigned long get_wchan(struct task_stru out: return pc; } - -/* - * Don't forget that the stack pointer must be aligned on a 8 bytes - * boundary for 32-bits ABI and 16 bytes for 64-bits ABI. - */ -unsigned long arch_align_stack(unsigned long sp) -{ - if (!(current->personality & ADDR_NO_RANDOMIZE) && randomize_va_space) - sp -= get_random_int() & ~PAGE_MASK; - - return sp & ALMASK; -} diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/mips/kernel/syscall.c linux-2.6.36.4-pax/arch/mips/kernel/syscall.c --- linux-2.6.36.4/arch/mips/kernel/syscall.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/mips/kernel/syscall.c 2010-12-14 21:18:01.000000000 +0100 @@ -108,14 +108,18 @@ unsigned long arch_get_unmapped_area(str do_color_align = 0; if (filp || (flags & MAP_SHARED)) do_color_align = 1; + +#ifdef CONFIG_PAX_RANDMMAP + if (!(current->mm->pax_flags & MF_PAX_RANDMMAP)) +#endif + if (addr) { if (do_color_align) addr = COLOUR_ALIGN(addr, pgoff); else addr = PAGE_ALIGN(addr); vmm = find_vma(current->mm, addr); - if (task_size - len >= addr && - (!vmm || addr + len <= vmm->vm_start)) + if (task_size - len >= addr && check_heap_stack_gap(vmm, addr, len)) return addr; } addr = current->mm->mmap_base; @@ -128,7 +132,7 @@ unsigned long arch_get_unmapped_area(str /* At this point: (!vmm || addr < vmm->vm_end). */ if (task_size - len < addr) return -ENOMEM; - if (!vmm || addr + len <= vmm->vm_start) + if (check_heap_stack_gap(vmm, addr, len)) return addr; addr = vmm->vm_end; if (do_color_align) @@ -168,19 +172,6 @@ static inline unsigned long brk_rnd(void return rnd; } -unsigned long arch_randomize_brk(struct mm_struct *mm) -{ - unsigned long base = mm->brk; - unsigned long ret; - - ret = PAGE_ALIGN(base + brk_rnd()); - - if (ret < mm->brk) - return mm->brk; - - return ret; -} - SYSCALL_DEFINE6(mips_mmap, unsigned long, addr, unsigned long, len, unsigned long, prot, unsigned long, flags, unsigned long, fd, off_t, offset) diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/mips/loongson/common/pm.c linux-2.6.36.4-pax/arch/mips/loongson/common/pm.c --- linux-2.6.36.4/arch/mips/loongson/common/pm.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/mips/loongson/common/pm.c 2010-10-27 22:58:44.000000000 +0200 @@ -147,7 +147,7 @@ static int loongson_pm_valid_state(suspe } } -static struct platform_suspend_ops loongson_pm_ops = { +static const struct platform_suspend_ops loongson_pm_ops = { .valid = loongson_pm_valid_state, .enter = loongson_pm_enter, }; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/mips/mm/fault.c linux-2.6.36.4-pax/arch/mips/mm/fault.c --- linux-2.6.36.4/arch/mips/mm/fault.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/mips/mm/fault.c 2010-10-27 22:58:07.000000000 +0200 @@ -27,6 +27,23 @@ #include /* For VMALLOC_END */ #include +#ifdef CONFIG_PAX_PAGEEXEC +void pax_report_insns(void *pc, void *sp) +{ + unsigned long i; + + printk(KERN_ERR "PAX: bytes at PC: "); + for (i = 0; i < 5; i++) { + unsigned int c; + if (get_user(c, (unsigned int *)pc+i)) + printk(KERN_CONT "???????? "); + else + printk(KERN_CONT "%08x ", c); + } + printk("\n"); +} +#endif + /* * This routine handles page faults. It determines the address, * and the problem, and then passes it off to one of the appropriate diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/parisc/include/asm/elf.h linux-2.6.36.4-pax/arch/parisc/include/asm/elf.h --- linux-2.6.36.4/arch/parisc/include/asm/elf.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/parisc/include/asm/elf.h 2010-10-27 22:58:07.000000000 +0200 @@ -342,6 +342,13 @@ struct pt_regs; /* forward declaration.. #define ELF_ET_DYN_BASE (TASK_UNMAPPED_BASE + 0x01000000) +#ifdef CONFIG_PAX_ASLR +#define PAX_ELF_ET_DYN_BASE 0x10000UL + +#define PAX_DELTA_MMAP_LEN 16 +#define PAX_DELTA_STACK_LEN 16 +#endif + /* This yields a mask that user programs can use to figure out what instruction set this CPU supports. This could be done in user space, but it's not easy, and we've already done it here. */ diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/parisc/include/asm/pgtable.h linux-2.6.36.4-pax/arch/parisc/include/asm/pgtable.h --- linux-2.6.36.4/arch/parisc/include/asm/pgtable.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/parisc/include/asm/pgtable.h 2010-10-27 22:58:07.000000000 +0200 @@ -207,6 +207,17 @@ #define PAGE_EXECREAD __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_READ | _PAGE_EXEC |_PAGE_ACCESSED) #define PAGE_COPY PAGE_EXECREAD #define PAGE_RWX __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_READ | _PAGE_WRITE | _PAGE_EXEC |_PAGE_ACCESSED) + +#ifdef CONFIG_PAX_PAGEEXEC +# define PAGE_SHARED_NOEXEC __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_READ | _PAGE_WRITE | _PAGE_ACCESSED) +# define PAGE_COPY_NOEXEC __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_READ | _PAGE_ACCESSED) +# define PAGE_READONLY_NOEXEC __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_READ | _PAGE_ACCESSED) +#else +# define PAGE_SHARED_NOEXEC PAGE_SHARED +# define PAGE_COPY_NOEXEC PAGE_COPY +# define PAGE_READONLY_NOEXEC PAGE_READONLY +#endif + #define PAGE_KERNEL __pgprot(_PAGE_KERNEL) #define PAGE_KERNEL_RO __pgprot(_PAGE_KERNEL & ~_PAGE_WRITE) #define PAGE_KERNEL_UNC __pgprot(_PAGE_KERNEL | _PAGE_NO_CACHE) diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/parisc/kernel/module.c linux-2.6.36.4-pax/arch/parisc/kernel/module.c --- linux-2.6.36.4/arch/parisc/kernel/module.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/parisc/kernel/module.c 2010-10-27 22:58:07.000000000 +0200 @@ -96,16 +96,38 @@ /* three functions to determine where in the module core * or init pieces the location is */ +static inline int in_init_rx(struct module *me, void *loc) +{ + return (loc >= me->module_init_rx && + loc < (me->module_init_rx + me->init_size_rx)); +} + +static inline int in_init_rw(struct module *me, void *loc) +{ + return (loc >= me->module_init_rw && + loc < (me->module_init_rw + me->init_size_rw)); +} + static inline int in_init(struct module *me, void *loc) { - return (loc >= me->module_init && - loc <= (me->module_init + me->init_size)); + return in_init_rx(me, loc) || in_init_rw(me, loc); +} + +static inline int in_core_rx(struct module *me, void *loc) +{ + return (loc >= me->module_core_rx && + loc < (me->module_core_rx + me->core_size_rx)); +} + +static inline int in_core_rw(struct module *me, void *loc) +{ + return (loc >= me->module_core_rw && + loc < (me->module_core_rw + me->core_size_rw)); } static inline int in_core(struct module *me, void *loc) { - return (loc >= me->module_core && - loc <= (me->module_core + me->core_size)); + return in_core_rx(me, loc) || in_core_rw(me, loc); } static inline int in_local(struct module *me, void *loc) @@ -365,13 +387,13 @@ int module_frob_arch_sections(CONST Elf_ } /* align things a bit */ - me->core_size = ALIGN(me->core_size, 16); - me->arch.got_offset = me->core_size; - me->core_size += gots * sizeof(struct got_entry); - - me->core_size = ALIGN(me->core_size, 16); - me->arch.fdesc_offset = me->core_size; - me->core_size += fdescs * sizeof(Elf_Fdesc); + me->core_size_rw = ALIGN(me->core_size_rw, 16); + me->arch.got_offset = me->core_size_rw; + me->core_size_rw += gots * sizeof(struct got_entry); + + me->core_size_rw = ALIGN(me->core_size_rw, 16); + me->arch.fdesc_offset = me->core_size_rw; + me->core_size_rw += fdescs * sizeof(Elf_Fdesc); me->arch.got_max = gots; me->arch.fdesc_max = fdescs; @@ -389,7 +411,7 @@ static Elf64_Word get_got(struct module BUG_ON(value == 0); - got = me->module_core + me->arch.got_offset; + got = me->module_core_rw + me->arch.got_offset; for (i = 0; got[i].addr; i++) if (got[i].addr == value) goto out; @@ -407,7 +429,7 @@ static Elf64_Word get_got(struct module #ifdef CONFIG_64BIT static Elf_Addr get_fdesc(struct module *me, unsigned long value) { - Elf_Fdesc *fdesc = me->module_core + me->arch.fdesc_offset; + Elf_Fdesc *fdesc = me->module_core_rw + me->arch.fdesc_offset; if (!value) { printk(KERN_ERR "%s: zero OPD requested!\n", me->name); @@ -425,7 +447,7 @@ static Elf_Addr get_fdesc(struct module /* Create new one */ fdesc->addr = value; - fdesc->gp = (Elf_Addr)me->module_core + me->arch.got_offset; + fdesc->gp = (Elf_Addr)me->module_core_rw + me->arch.got_offset; return (Elf_Addr)fdesc; } #endif /* CONFIG_64BIT */ @@ -849,7 +871,7 @@ register_unwind_table(struct module *me, table = (unsigned char *)sechdrs[me->arch.unwind_section].sh_addr; end = table + sechdrs[me->arch.unwind_section].sh_size; - gp = (Elf_Addr)me->module_core + me->arch.got_offset; + gp = (Elf_Addr)me->module_core_rw + me->arch.got_offset; DEBUGP("register_unwind_table(), sect = %d at 0x%p - 0x%p (gp=0x%lx)\n", me->arch.unwind_section, table, end, gp); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/parisc/kernel/sys_parisc.c linux-2.6.36.4-pax/arch/parisc/kernel/sys_parisc.c --- linux-2.6.36.4/arch/parisc/kernel/sys_parisc.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/parisc/kernel/sys_parisc.c 2010-10-27 22:58:07.000000000 +0200 @@ -43,7 +43,7 @@ static unsigned long get_unshared_area(u /* At this point: (!vma || addr < vma->vm_end). */ if (TASK_SIZE - len < addr) return -ENOMEM; - if (!vma || addr + len <= vma->vm_start) + if (check_heap_stack_gap(vma, addr, len)) return addr; addr = vma->vm_end; } @@ -79,7 +79,7 @@ static unsigned long get_shared_area(str /* At this point: (!vma || addr < vma->vm_end). */ if (TASK_SIZE - len < addr) return -ENOMEM; - if (!vma || addr + len <= vma->vm_start) + if (check_heap_stack_gap(vma, addr, len)) return addr; addr = DCACHE_ALIGN(vma->vm_end - offset) + offset; if (addr < vma->vm_end) /* handle wraparound */ @@ -98,7 +98,7 @@ unsigned long arch_get_unmapped_area(str if (flags & MAP_FIXED) return addr; if (!addr) - addr = TASK_UNMAPPED_BASE; + addr = current->mm->mmap_base; if (filp) { addr = get_shared_area(filp->f_mapping, addr, len, pgoff); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/parisc/kernel/traps.c linux-2.6.36.4-pax/arch/parisc/kernel/traps.c --- linux-2.6.36.4/arch/parisc/kernel/traps.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/parisc/kernel/traps.c 2010-10-27 22:58:07.000000000 +0200 @@ -733,9 +733,7 @@ void notrace handle_interruption(int cod down_read(¤t->mm->mmap_sem); vma = find_vma(current->mm,regs->iaoq[0]); - if (vma && (regs->iaoq[0] >= vma->vm_start) - && (vma->vm_flags & VM_EXEC)) { - + if (vma && (regs->iaoq[0] >= vma->vm_start)) { fault_address = regs->iaoq[0]; fault_space = regs->iasq[0]; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/parisc/mm/fault.c linux-2.6.36.4-pax/arch/parisc/mm/fault.c --- linux-2.6.36.4/arch/parisc/mm/fault.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/parisc/mm/fault.c 2010-10-27 22:58:07.000000000 +0200 @@ -15,6 +15,7 @@ #include #include #include +#include #include #include @@ -52,7 +53,7 @@ DEFINE_PER_CPU(struct exception_data, ex static unsigned long parisc_acctyp(unsigned long code, unsigned int inst) { - if (code == 6 || code == 16) + if (code == 6 || code == 7 || code == 16) return VM_EXEC; switch (inst & 0xf0000000) { @@ -138,6 +139,116 @@ parisc_acctyp(unsigned long code, unsign } #endif +#ifdef CONFIG_PAX_PAGEEXEC +/* + * PaX: decide what to do with offenders (instruction_pointer(regs) = fault address) + * + * returns 1 when task should be killed + * 2 when rt_sigreturn trampoline was detected + * 3 when unpatched PLT trampoline was detected + */ +static int pax_handle_fetch_fault(struct pt_regs *regs) +{ + +#ifdef CONFIG_PAX_EMUPLT + int err; + + do { /* PaX: unpatched PLT emulation */ + unsigned int bl, depwi; + + err = get_user(bl, (unsigned int *)instruction_pointer(regs)); + err |= get_user(depwi, (unsigned int *)(instruction_pointer(regs)+4)); + + if (err) + break; + + if (bl == 0xEA9F1FDDU && depwi == 0xD6801C1EU) { + unsigned int ldw, bv, ldw2, addr = instruction_pointer(regs)-12; + + err = get_user(ldw, (unsigned int *)addr); + err |= get_user(bv, (unsigned int *)(addr+4)); + err |= get_user(ldw2, (unsigned int *)(addr+8)); + + if (err) + break; + + if (ldw == 0x0E801096U && + bv == 0xEAC0C000U && + ldw2 == 0x0E881095U) + { + unsigned int resolver, map; + + err = get_user(resolver, (unsigned int *)(instruction_pointer(regs)+8)); + err |= get_user(map, (unsigned int *)(instruction_pointer(regs)+12)); + if (err) + break; + + regs->gr[20] = instruction_pointer(regs)+8; + regs->gr[21] = map; + regs->gr[22] = resolver; + regs->iaoq[0] = resolver | 3UL; + regs->iaoq[1] = regs->iaoq[0] + 4; + return 3; + } + } + } while (0); +#endif + +#ifdef CONFIG_PAX_EMUTRAMP + +#ifndef CONFIG_PAX_EMUSIGRT + if (!(current->mm->pax_flags & MF_PAX_EMUTRAMP)) + return 1; +#endif + + do { /* PaX: rt_sigreturn emulation */ + unsigned int ldi1, ldi2, bel, nop; + + err = get_user(ldi1, (unsigned int *)instruction_pointer(regs)); + err |= get_user(ldi2, (unsigned int *)(instruction_pointer(regs)+4)); + err |= get_user(bel, (unsigned int *)(instruction_pointer(regs)+8)); + err |= get_user(nop, (unsigned int *)(instruction_pointer(regs)+12)); + + if (err) + break; + + if ((ldi1 == 0x34190000U || ldi1 == 0x34190002U) && + ldi2 == 0x3414015AU && + bel == 0xE4008200U && + nop == 0x08000240U) + { + regs->gr[25] = (ldi1 & 2) >> 1; + regs->gr[20] = __NR_rt_sigreturn; + regs->gr[31] = regs->iaoq[1] + 16; + regs->sr[0] = regs->iasq[1]; + regs->iaoq[0] = 0x100UL; + regs->iaoq[1] = regs->iaoq[0] + 4; + regs->iasq[0] = regs->sr[2]; + regs->iasq[1] = regs->sr[2]; + return 2; + } + } while (0); +#endif + + return 1; +} + +void pax_report_insns(void *pc, void *sp) +{ + unsigned long i; + + printk(KERN_ERR "PAX: bytes at PC: "); + for (i = 0; i < 5; i++) { + unsigned int c; + if (get_user(c, (unsigned int *)pc+i)) + printk(KERN_CONT "???????? "); + else + printk(KERN_CONT "%08x ", c); + } + printk("\n"); +} +#endif + int fixup_exception(struct pt_regs *regs) { const struct exception_table_entry *fix; @@ -192,8 +303,33 @@ good_area: acc_type = parisc_acctyp(code,regs->iir); - if ((vma->vm_flags & acc_type) != acc_type) + if ((vma->vm_flags & acc_type) != acc_type) { + +#ifdef CONFIG_PAX_PAGEEXEC + if ((mm->pax_flags & MF_PAX_PAGEEXEC) && (acc_type & VM_EXEC) && + (address & ~3UL) == instruction_pointer(regs)) + { + up_read(&mm->mmap_sem); + switch (pax_handle_fetch_fault(regs)) { + +#ifdef CONFIG_PAX_EMUPLT + case 3: + return; +#endif + +#ifdef CONFIG_PAX_EMUTRAMP + case 2: + return; +#endif + + } + pax_report_fault(regs, (void *)instruction_pointer(regs), (void *)regs->gr[30]); + do_group_exit(SIGKILL); + } +#endif + goto bad_area; + } /* * If for any reason at all we couldn't handle the fault, make diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/powerpc/include/asm/device.h linux-2.6.36.4-pax/arch/powerpc/include/asm/device.h --- linux-2.6.36.4/arch/powerpc/include/asm/device.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/powerpc/include/asm/device.h 2010-10-27 22:58:44.000000000 +0200 @@ -11,7 +11,7 @@ struct device_node; struct dev_archdata { /* DMA operations on that device */ - struct dma_map_ops *dma_ops; + const struct dma_map_ops *dma_ops; /* * When an iommu is in use, dma_data is used as a ptr to the base of the diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/powerpc/include/asm/dma-mapping.h linux-2.6.36.4-pax/arch/powerpc/include/asm/dma-mapping.h --- linux-2.6.36.4/arch/powerpc/include/asm/dma-mapping.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/powerpc/include/asm/dma-mapping.h 2010-10-27 22:58:44.000000000 +0200 @@ -66,12 +66,13 @@ static inline unsigned long device_to_ma /* * Available generic sets of operations */ +/* cannot be const */ #ifdef CONFIG_PPC64 extern struct dma_map_ops dma_iommu_ops; #endif -extern struct dma_map_ops dma_direct_ops; +extern const struct dma_map_ops dma_direct_ops; -static inline struct dma_map_ops *get_dma_ops(struct device *dev) +static inline const struct dma_map_ops *get_dma_ops(struct device *dev) { /* We don't handle the NULL dev case for ISA for now. We could * do it via an out of line call but it is not needed for now. The @@ -84,7 +85,7 @@ static inline struct dma_map_ops *get_dm return dev->archdata.dma_ops; } -static inline void set_dma_ops(struct device *dev, struct dma_map_ops *ops) +static inline void set_dma_ops(struct device *dev, const struct dma_map_ops *ops) { dev->archdata.dma_ops = ops; } @@ -118,7 +119,7 @@ static inline void set_dma_offset(struct static inline int dma_supported(struct device *dev, u64 mask) { - struct dma_map_ops *dma_ops = get_dma_ops(dev); + const struct dma_map_ops *dma_ops = get_dma_ops(dev); if (unlikely(dma_ops == NULL)) return 0; @@ -129,7 +130,7 @@ static inline int dma_supported(struct d static inline int dma_set_mask(struct device *dev, u64 dma_mask) { - struct dma_map_ops *dma_ops = get_dma_ops(dev); + const struct dma_map_ops *dma_ops = get_dma_ops(dev); if (unlikely(dma_ops == NULL)) return -EIO; @@ -144,7 +145,7 @@ static inline int dma_set_mask(struct de static inline void *dma_alloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_handle, gfp_t flag) { - struct dma_map_ops *dma_ops = get_dma_ops(dev); + const struct dma_map_ops *dma_ops = get_dma_ops(dev); void *cpu_addr; BUG_ON(!dma_ops); @@ -159,7 +160,7 @@ static inline void *dma_alloc_coherent(s static inline void dma_free_coherent(struct device *dev, size_t size, void *cpu_addr, dma_addr_t dma_handle) { - struct dma_map_ops *dma_ops = get_dma_ops(dev); + const struct dma_map_ops *dma_ops = get_dma_ops(dev); BUG_ON(!dma_ops); @@ -170,7 +171,7 @@ static inline void dma_free_coherent(str static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr) { - struct dma_map_ops *dma_ops = get_dma_ops(dev); + const struct dma_map_ops *dma_ops = get_dma_ops(dev); if (dma_ops->mapping_error) return dma_ops->mapping_error(dev, dma_addr); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/powerpc/include/asm/elf.h linux-2.6.36.4-pax/arch/powerpc/include/asm/elf.h --- linux-2.6.36.4/arch/powerpc/include/asm/elf.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/powerpc/include/asm/elf.h 2010-10-27 22:58:07.000000000 +0200 @@ -178,8 +178,19 @@ typedef elf_fpreg_t elf_vsrreghalf_t32[E the loader. We need to make sure that it is out of the way of the program that it will "exec", and that there is sufficient room for the brk. */ -extern unsigned long randomize_et_dyn(unsigned long base); -#define ELF_ET_DYN_BASE (randomize_et_dyn(0x20000000)) +#define ELF_ET_DYN_BASE (0x20000000) + +#ifdef CONFIG_PAX_ASLR +#define PAX_ELF_ET_DYN_BASE (0x10000000UL) + +#ifdef __powerpc64__ +#define PAX_DELTA_MMAP_LEN (test_thread_flag(TIF_32BIT) ? 16 : 28) +#define PAX_DELTA_STACK_LEN (test_thread_flag(TIF_32BIT) ? 16 : 28) +#else +#define PAX_DELTA_MMAP_LEN 15 +#define PAX_DELTA_STACK_LEN 15 +#endif +#endif /* * Our registers are always unsigned longs, whether we're a 32 bit @@ -274,9 +285,6 @@ extern int arch_setup_additional_pages(s (0x7ff >> (PAGE_SHIFT - 12)) : \ (0x3ffff >> (PAGE_SHIFT - 12))) -extern unsigned long arch_randomize_brk(struct mm_struct *mm); -#define arch_randomize_brk arch_randomize_brk - #endif /* __KERNEL__ */ /* diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/powerpc/include/asm/iommu.h linux-2.6.36.4-pax/arch/powerpc/include/asm/iommu.h --- linux-2.6.36.4/arch/powerpc/include/asm/iommu.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/powerpc/include/asm/iommu.h 2010-10-27 22:58:44.000000000 +0200 @@ -116,6 +116,9 @@ extern void iommu_init_early_iSeries(voi extern void iommu_init_early_dart(void); extern void iommu_init_early_pasemi(void); +/* dma-iommu.c */ +extern int dma_iommu_dma_supported(struct device *dev, u64 mask); + #ifdef CONFIG_PCI extern void pci_iommu_init(void); extern void pci_direct_iommu_init(void); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/powerpc/include/asm/kmap_types.h linux-2.6.36.4-pax/arch/powerpc/include/asm/kmap_types.h --- linux-2.6.36.4/arch/powerpc/include/asm/kmap_types.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/powerpc/include/asm/kmap_types.h 2010-10-27 22:58:07.000000000 +0200 @@ -27,6 +27,7 @@ enum km_type { KM_PPC_SYNC_PAGE, KM_PPC_SYNC_ICACHE, KM_KDB, + KM_CLEARPAGE, KM_TYPE_NR }; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/powerpc/include/asm/page.h linux-2.6.36.4-pax/arch/powerpc/include/asm/page.h --- linux-2.6.36.4/arch/powerpc/include/asm/page.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/powerpc/include/asm/page.h 2010-10-27 22:58:07.000000000 +0200 @@ -129,8 +129,9 @@ extern phys_addr_t kernstart_addr; * and needs to be executable. This means the whole heap ends * up being executable. */ -#define VM_DATA_DEFAULT_FLAGS32 (VM_READ | VM_WRITE | VM_EXEC | \ - VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC) +#define VM_DATA_DEFAULT_FLAGS32 \ + (((current->personality & READ_IMPLIES_EXEC) ? VM_EXEC : 0) | \ + VM_READ | VM_WRITE | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC) #define VM_DATA_DEFAULT_FLAGS64 (VM_READ | VM_WRITE | \ VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC) @@ -158,6 +159,9 @@ extern phys_addr_t kernstart_addr; #define is_kernel_addr(x) ((x) >= PAGE_OFFSET) #endif +#define ktla_ktva(addr) (addr) +#define ktva_ktla(addr) (addr) + #ifndef __ASSEMBLY__ #undef STRICT_MM_TYPECHECKS diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/powerpc/include/asm/page_64.h linux-2.6.36.4-pax/arch/powerpc/include/asm/page_64.h --- linux-2.6.36.4/arch/powerpc/include/asm/page_64.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/powerpc/include/asm/page_64.h 2010-10-27 22:58:07.000000000 +0200 @@ -172,15 +172,18 @@ do { \ * stack by default, so in the absense of a PT_GNU_STACK program header * we turn execute permission off. */ -#define VM_STACK_DEFAULT_FLAGS32 (VM_READ | VM_WRITE | VM_EXEC | \ - VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC) +#define VM_STACK_DEFAULT_FLAGS32 \ + (((current->personality & READ_IMPLIES_EXEC) ? VM_EXEC : 0) | \ + VM_READ | VM_WRITE | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC) #define VM_STACK_DEFAULT_FLAGS64 (VM_READ | VM_WRITE | \ VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC) +#ifndef CONFIG_PAX_PAGEEXEC #define VM_STACK_DEFAULT_FLAGS \ (test_thread_flag(TIF_32BIT) ? \ VM_STACK_DEFAULT_FLAGS32 : VM_STACK_DEFAULT_FLAGS64) +#endif #include diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/powerpc/include/asm/pci.h linux-2.6.36.4-pax/arch/powerpc/include/asm/pci.h --- linux-2.6.36.4/arch/powerpc/include/asm/pci.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/powerpc/include/asm/pci.h 2010-10-27 22:58:44.000000000 +0200 @@ -65,8 +65,8 @@ static inline int pci_get_legacy_ide_irq } #ifdef CONFIG_PCI -extern void set_pci_dma_ops(struct dma_map_ops *dma_ops); -extern struct dma_map_ops *get_pci_dma_ops(void); +extern void set_pci_dma_ops(const struct dma_map_ops *dma_ops); +extern const struct dma_map_ops *get_pci_dma_ops(void); #else /* CONFIG_PCI */ #define set_pci_dma_ops(d) #define get_pci_dma_ops() NULL diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/powerpc/include/asm/pgtable.h linux-2.6.36.4-pax/arch/powerpc/include/asm/pgtable.h --- linux-2.6.36.4/arch/powerpc/include/asm/pgtable.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/powerpc/include/asm/pgtable.h 2011-02-24 18:34:28.000000000 +0100 @@ -2,6 +2,7 @@ #define _ASM_POWERPC_PGTABLE_H #ifdef __KERNEL__ +#include #ifndef __ASSEMBLY__ #include /* For TASK_SIZE */ #include diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/powerpc/include/asm/pte-hash32.h linux-2.6.36.4-pax/arch/powerpc/include/asm/pte-hash32.h --- linux-2.6.36.4/arch/powerpc/include/asm/pte-hash32.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/powerpc/include/asm/pte-hash32.h 2010-10-27 22:58:07.000000000 +0200 @@ -21,6 +21,7 @@ #define _PAGE_FILE 0x004 /* when !present: nonlinear file mapping */ #define _PAGE_USER 0x004 /* usermode access allowed */ #define _PAGE_GUARDED 0x008 /* G: prohibit speculative access */ +#define _PAGE_EXEC _PAGE_GUARDED #define _PAGE_COHERENT 0x010 /* M: enforce memory coherence (SMP systems) */ #define _PAGE_NO_CACHE 0x020 /* I: cache inhibit */ #define _PAGE_WRITETHRU 0x040 /* W: cache write-through */ diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/powerpc/include/asm/reg.h linux-2.6.36.4-pax/arch/powerpc/include/asm/reg.h --- linux-2.6.36.4/arch/powerpc/include/asm/reg.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/powerpc/include/asm/reg.h 2010-10-27 22:58:07.000000000 +0200 @@ -191,6 +191,7 @@ #define SPRN_DBCR 0x136 /* e300 Data Breakpoint Control Reg */ #define SPRN_DSISR 0x012 /* Data Storage Interrupt Status Register */ #define DSISR_NOHPTE 0x40000000 /* no translation found */ +#define DSISR_GUARDED 0x10000000 /* fetch from guarded storage */ #define DSISR_PROTFAULT 0x08000000 /* protection fault */ #define DSISR_ISSTORE 0x02000000 /* access was a store */ #define DSISR_DABRMATCH 0x00400000 /* hit data breakpoint */ diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/powerpc/include/asm/swiotlb.h linux-2.6.36.4-pax/arch/powerpc/include/asm/swiotlb.h --- linux-2.6.36.4/arch/powerpc/include/asm/swiotlb.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/powerpc/include/asm/swiotlb.h 2010-10-27 22:58:44.000000000 +0200 @@ -13,7 +13,7 @@ #include -extern struct dma_map_ops swiotlb_dma_ops; +extern const struct dma_map_ops swiotlb_dma_ops; static inline void dma_mark_clean(void *addr, size_t size) {} diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/powerpc/include/asm/system.h linux-2.6.36.4-pax/arch/powerpc/include/asm/system.h --- linux-2.6.36.4/arch/powerpc/include/asm/system.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/powerpc/include/asm/system.h 2010-12-14 21:18:01.000000000 +0100 @@ -533,7 +533,7 @@ __cmpxchg_local(volatile void *ptr, unsi #define cmpxchg64_local(ptr, o, n) __cmpxchg64_local_generic((ptr), (o), (n)) #endif -extern unsigned long arch_align_stack(unsigned long sp); +#define arch_align_stack(x) ((x) & ~0xfUL) /* Used in very early kernel initialization. */ extern unsigned long reloc_offset(void); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/powerpc/include/asm/uaccess.h linux-2.6.36.4-pax/arch/powerpc/include/asm/uaccess.h --- linux-2.6.36.4/arch/powerpc/include/asm/uaccess.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/powerpc/include/asm/uaccess.h 2010-10-27 22:58:07.000000000 +0200 @@ -13,6 +13,8 @@ #define VERIFY_READ 0 #define VERIFY_WRITE 1 +extern void check_object_size(const void *ptr, unsigned long n, bool to); + /* * The fs value determines whether argument validity checking should be * performed or not. If get_fs() == USER_DS, checking is performed, with @@ -327,52 +329,6 @@ do { \ extern unsigned long __copy_tofrom_user(void __user *to, const void __user *from, unsigned long size); -#ifndef __powerpc64__ - -static inline unsigned long copy_from_user(void *to, - const void __user *from, unsigned long n) -{ - unsigned long over; - - if (access_ok(VERIFY_READ, from, n)) - return __copy_tofrom_user((__force void __user *)to, from, n); - if ((unsigned long)from < TASK_SIZE) { - over = (unsigned long)from + n - TASK_SIZE; - return __copy_tofrom_user((__force void __user *)to, from, - n - over) + over; - } - return n; -} - -static inline unsigned long copy_to_user(void __user *to, - const void *from, unsigned long n) -{ - unsigned long over; - - if (access_ok(VERIFY_WRITE, to, n)) - return __copy_tofrom_user(to, (__force void __user *)from, n); - if ((unsigned long)to < TASK_SIZE) { - over = (unsigned long)to + n - TASK_SIZE; - return __copy_tofrom_user(to, (__force void __user *)from, - n - over) + over; - } - return n; -} - -#else /* __powerpc64__ */ - -#define __copy_in_user(to, from, size) \ - __copy_tofrom_user((to), (from), (size)) - -extern unsigned long copy_from_user(void *to, const void __user *from, - unsigned long n); -extern unsigned long copy_to_user(void __user *to, const void *from, - unsigned long n); -extern unsigned long copy_in_user(void __user *to, const void __user *from, - unsigned long n); - -#endif /* __powerpc64__ */ - static inline unsigned long __copy_from_user_inatomic(void *to, const void __user *from, unsigned long n) { @@ -396,6 +352,10 @@ static inline unsigned long __copy_from_ if (ret == 0) return 0; } + + if (!__builtin_constant_p(n)) + check_object_size(to, n, false); + return __copy_tofrom_user((__force void __user *)to, from, n); } @@ -422,6 +382,10 @@ static inline unsigned long __copy_to_us if (ret == 0) return 0; } + + if (!__builtin_constant_p(n)) + check_object_size(from, n, true); + return __copy_tofrom_user(to, (__force const void __user *)from, n); } @@ -439,6 +403,92 @@ static inline unsigned long __copy_to_us return __copy_to_user_inatomic(to, from, size); } +#ifndef __powerpc64__ + +static inline unsigned long __must_check copy_from_user(void *to, + const void __user *from, unsigned long n) +{ + unsigned long over; + + if ((long)n < 0) + return n; + + if (access_ok(VERIFY_READ, from, n)) { + if (!__builtin_constant_p(n)) + check_object_size(to, n, false); + return __copy_tofrom_user((__force void __user *)to, from, n); + } + if ((unsigned long)from < TASK_SIZE) { + over = (unsigned long)from + n - TASK_SIZE; + if (!__builtin_constant_p(n - over)) + check_object_size(to, n - over, false); + return __copy_tofrom_user((__force void __user *)to, from, + n - over) + over; + } + return n; +} + +static inline unsigned long __must_check copy_to_user(void __user *to, + const void *from, unsigned long n) +{ + unsigned long over; + + if ((long)n < 0) + return n; + + if (access_ok(VERIFY_WRITE, to, n)) { + if (!__builtin_constant_p(n)) + check_object_size(from, n, true); + return __copy_tofrom_user(to, (__force void __user *)from, n); + } + if ((unsigned long)to < TASK_SIZE) { + over = (unsigned long)to + n - TASK_SIZE; + if (!__builtin_constant_p(n)) + check_object_size(from, n - over, true); + return __copy_tofrom_user(to, (__force void __user *)from, + n - over) + over; + } + return n; +} + +#else /* __powerpc64__ */ + +#define __copy_in_user(to, from, size) \ + __copy_tofrom_user((to), (from), (size)) + +static inline unsigned long __must_check copy_from_user(void *to, const void __user *from, unsigned long n) +{ + if ((long)n < 0 || n > INT_MAX) + return n; + + if (!__builtin_constant_p(n)) + check_object_size(to, n, false); + + if (likely(access_ok(VERIFY_READ, from, n))) + n = __copy_from_user(to, from, n); + else + memset(to, 0, n); + return n; +} + +static inline unsigned long __must_check copy_to_user(void __user *to, const void *from, unsigned long n) +{ + if ((long)n < 0 || n > INT_MAX) + return n; + + if (likely(access_ok(VERIFY_WRITE, to, n))) { + if (!__builtin_constant_p(n)) + check_object_size(from, n, true); + n = __copy_to_user(to, from, n); + } + return n; +} + +extern unsigned long copy_in_user(void __user *to, const void __user *from, + unsigned long n); + +#endif /* __powerpc64__ */ + extern unsigned long __clear_user(void __user *addr, unsigned long size); static inline unsigned long clear_user(void __user *addr, unsigned long size) diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/powerpc/kernel/dma-iommu.c linux-2.6.36.4-pax/arch/powerpc/kernel/dma-iommu.c --- linux-2.6.36.4/arch/powerpc/kernel/dma-iommu.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/powerpc/kernel/dma-iommu.c 2010-10-27 22:58:44.000000000 +0200 @@ -70,7 +70,7 @@ static void dma_iommu_unmap_sg(struct de } /* We support DMA to/from any memory page via the iommu */ -static int dma_iommu_dma_supported(struct device *dev, u64 mask) +int dma_iommu_dma_supported(struct device *dev, u64 mask) { struct iommu_table *tbl = get_iommu_table_base(dev); @@ -89,6 +89,7 @@ static int dma_iommu_dma_supported(struc return 1; } +/* cannot be const, see arch/powerpc/platforms/cell/iommu.c */ struct dma_map_ops dma_iommu_ops = { .alloc_coherent = dma_iommu_alloc_coherent, .free_coherent = dma_iommu_free_coherent, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/powerpc/kernel/dma-swiotlb.c linux-2.6.36.4-pax/arch/powerpc/kernel/dma-swiotlb.c --- linux-2.6.36.4/arch/powerpc/kernel/dma-swiotlb.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/powerpc/kernel/dma-swiotlb.c 2010-10-27 22:58:44.000000000 +0200 @@ -31,7 +31,7 @@ unsigned int ppc_swiotlb_enable; * map_page, and unmap_page on highmem, use normal dma_ops * for everything else. */ -struct dma_map_ops swiotlb_dma_ops = { +const struct dma_map_ops swiotlb_dma_ops = { .alloc_coherent = dma_direct_alloc_coherent, .free_coherent = dma_direct_free_coherent, .map_sg = swiotlb_map_sg_attrs, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/powerpc/kernel/dma.c linux-2.6.36.4-pax/arch/powerpc/kernel/dma.c --- linux-2.6.36.4/arch/powerpc/kernel/dma.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/powerpc/kernel/dma.c 2010-10-27 22:58:44.000000000 +0200 @@ -135,7 +135,7 @@ static inline void dma_direct_sync_singl } #endif -struct dma_map_ops dma_direct_ops = { +const struct dma_map_ops dma_direct_ops = { .alloc_coherent = dma_direct_alloc_coherent, .free_coherent = dma_direct_free_coherent, .map_sg = dma_direct_map_sg, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/powerpc/kernel/exceptions-64e.S linux-2.6.36.4-pax/arch/powerpc/kernel/exceptions-64e.S --- linux-2.6.36.4/arch/powerpc/kernel/exceptions-64e.S 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/powerpc/kernel/exceptions-64e.S 2010-10-27 22:58:07.000000000 +0200 @@ -495,6 +495,7 @@ storage_fault_common: std r14,_DAR(r1) std r15,_DSISR(r1) addi r3,r1,STACK_FRAME_OVERHEAD + bl .save_nvgprs mr r4,r14 mr r5,r15 ld r14,PACA_EXGEN+EX_R14(r13) @@ -504,8 +505,7 @@ storage_fault_common: cmpdi r3,0 bne- 1f b .ret_from_except_lite -1: bl .save_nvgprs - mr r5,r3 +1: mr r5,r3 addi r3,r1,STACK_FRAME_OVERHEAD ld r4,_DAR(r1) bl .bad_page_fault diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/powerpc/kernel/exceptions-64s.S linux-2.6.36.4-pax/arch/powerpc/kernel/exceptions-64s.S --- linux-2.6.36.4/arch/powerpc/kernel/exceptions-64s.S 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/powerpc/kernel/exceptions-64s.S 2010-10-27 22:58:07.000000000 +0200 @@ -841,10 +841,10 @@ handle_page_fault: 11: ld r4,_DAR(r1) ld r5,_DSISR(r1) addi r3,r1,STACK_FRAME_OVERHEAD + bl .save_nvgprs bl .do_page_fault cmpdi r3,0 beq+ 13f - bl .save_nvgprs mr r5,r3 addi r3,r1,STACK_FRAME_OVERHEAD lwz r4,_DAR(r1) diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/powerpc/kernel/ibmebus.c linux-2.6.36.4-pax/arch/powerpc/kernel/ibmebus.c --- linux-2.6.36.4/arch/powerpc/kernel/ibmebus.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/powerpc/kernel/ibmebus.c 2010-10-27 22:58:44.000000000 +0200 @@ -128,7 +128,7 @@ static int ibmebus_dma_supported(struct return 1; } -static struct dma_map_ops ibmebus_dma_ops = { +static const struct dma_map_ops ibmebus_dma_ops = { .alloc_coherent = ibmebus_alloc_coherent, .free_coherent = ibmebus_free_coherent, .map_sg = ibmebus_map_sg, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/powerpc/kernel/kgdb.c linux-2.6.36.4-pax/arch/powerpc/kernel/kgdb.c --- linux-2.6.36.4/arch/powerpc/kernel/kgdb.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/powerpc/kernel/kgdb.c 2010-10-27 22:58:44.000000000 +0200 @@ -360,7 +360,7 @@ int kgdb_arch_handle_exception(int vecto /* * Global data */ -struct kgdb_arch arch_kgdb_ops = { +const struct kgdb_arch arch_kgdb_ops = { .gdb_bpt_instr = {0x7d, 0x82, 0x10, 0x08}, }; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/powerpc/kernel/module.c linux-2.6.36.4-pax/arch/powerpc/kernel/module.c --- linux-2.6.36.4/arch/powerpc/kernel/module.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/powerpc/kernel/module.c 2010-10-27 22:58:07.000000000 +0200 @@ -31,11 +31,24 @@ LIST_HEAD(module_bug_list); +#ifdef CONFIG_PAX_KERNEXEC void *module_alloc(unsigned long size) { if (size == 0) return NULL; + return vmalloc(size); +} + +void *module_alloc_exec(unsigned long size) +#else +void *module_alloc(unsigned long size) +#endif + +{ + if (size == 0) + return NULL; + return vmalloc_exec(size); } @@ -45,6 +58,13 @@ void module_free(struct module *mod, voi vfree(module_region); } +#ifdef CONFIG_PAX_KERNEXEC +void module_free_exec(struct module *mod, void *module_region) +{ + module_free(mod, module_region); +} +#endif + static const Elf_Shdr *find_section(const Elf_Ehdr *hdr, const Elf_Shdr *sechdrs, const char *name) diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/powerpc/kernel/module_32.c linux-2.6.36.4-pax/arch/powerpc/kernel/module_32.c --- linux-2.6.36.4/arch/powerpc/kernel/module_32.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/powerpc/kernel/module_32.c 2010-10-27 22:58:07.000000000 +0200 @@ -162,7 +162,7 @@ int module_frob_arch_sections(Elf32_Ehdr me->arch.core_plt_section = i; } if (!me->arch.core_plt_section || !me->arch.init_plt_section) { - printk("Module doesn't contain .plt or .init.plt sections.\n"); + printk("Module %s doesn't contain .plt or .init.plt sections.\n", me->name); return -ENOEXEC; } @@ -203,11 +203,16 @@ static uint32_t do_plt_call(void *locati DEBUGP("Doing plt for call to 0x%x at 0x%x\n", val, (unsigned int)location); /* Init, or core PLT? */ - if (location >= mod->module_core - && location < mod->module_core + mod->core_size) + if ((location >= mod->module_core_rx && location < mod->module_core_rx + mod->core_size_rx) || + (location >= mod->module_core_rw && location < mod->module_core_rw + mod->core_size_rw)) entry = (void *)sechdrs[mod->arch.core_plt_section].sh_addr; - else + else if ((location >= mod->module_init_rx && location < mod->module_init_rx + mod->init_size_rx) || + (location >= mod->module_init_rw && location < mod->module_init_rw + mod->init_size_rw)) entry = (void *)sechdrs[mod->arch.init_plt_section].sh_addr; + else { + printk(KERN_ERR "%s: invalid R_PPC_REL24 entry found\n", mod->name); + return ~0UL; + } /* Find this entry, or if that fails, the next avail. entry */ while (entry->jump[0]) { diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/powerpc/kernel/pci-common.c linux-2.6.36.4-pax/arch/powerpc/kernel/pci-common.c --- linux-2.6.36.4/arch/powerpc/kernel/pci-common.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/powerpc/kernel/pci-common.c 2010-10-27 22:58:44.000000000 +0200 @@ -52,14 +52,14 @@ resource_size_t isa_mem_base; unsigned int ppc_pci_flags = 0; -static struct dma_map_ops *pci_dma_ops = &dma_direct_ops; +static const struct dma_map_ops *pci_dma_ops = &dma_direct_ops; -void set_pci_dma_ops(struct dma_map_ops *dma_ops) +void set_pci_dma_ops(const struct dma_map_ops *dma_ops) { pci_dma_ops = dma_ops; } -struct dma_map_ops *get_pci_dma_ops(void) +const struct dma_map_ops *get_pci_dma_ops(void) { return pci_dma_ops; } diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/powerpc/kernel/process.c linux-2.6.36.4-pax/arch/powerpc/kernel/process.c --- linux-2.6.36.4/arch/powerpc/kernel/process.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/powerpc/kernel/process.c 2010-12-14 21:18:01.000000000 +0100 @@ -1244,61 +1244,6 @@ void thread_info_cache_init(void) #endif /* THREAD_SHIFT < PAGE_SHIFT */ -unsigned long arch_align_stack(unsigned long sp) -{ - if (!(current->personality & ADDR_NO_RANDOMIZE) && randomize_va_space) - sp -= get_random_int() & ~PAGE_MASK; - return sp & ~0xf; -} - -static inline unsigned long brk_rnd(void) -{ - unsigned long rnd = 0; - - /* 8MB for 32bit, 1GB for 64bit */ - if (is_32bit_task()) - rnd = (long)(get_random_int() % (1<<(23-PAGE_SHIFT))); - else - rnd = (long)(get_random_int() % (1<<(30-PAGE_SHIFT))); - - return rnd << PAGE_SHIFT; -} - -unsigned long arch_randomize_brk(struct mm_struct *mm) -{ - unsigned long base = mm->brk; - unsigned long ret; - -#ifdef CONFIG_PPC_STD_MMU_64 - /* - * If we are using 1TB segments and we are allowed to randomise - * the heap, we can put it above 1TB so it is backed by a 1TB - * segment. Otherwise the heap will be in the bottom 1TB - * which always uses 256MB segments and this may result in a - * performance penalty. - */ - if (!is_32bit_task() && (mmu_highuser_ssize == MMU_SEGSIZE_1T)) - base = max_t(unsigned long, mm->brk, 1UL << SID_SHIFT_1T); -#endif - - ret = PAGE_ALIGN(base + brk_rnd()); - - if (ret < mm->brk) - return mm->brk; - - return ret; -} - -unsigned long randomize_et_dyn(unsigned long base) -{ - unsigned long ret = PAGE_ALIGN(base + brk_rnd()); - - if (ret < base) - return base; - - return ret; -} - #ifdef CONFIG_SMP int arch_sd_sibling_asym_packing(void) { diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/powerpc/kernel/signal_32.c linux-2.6.36.4-pax/arch/powerpc/kernel/signal_32.c --- linux-2.6.36.4/arch/powerpc/kernel/signal_32.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/powerpc/kernel/signal_32.c 2010-10-27 22:58:07.000000000 +0200 @@ -858,7 +858,7 @@ int handle_rt_signal32(unsigned long sig /* Save user registers on the stack */ frame = &rt_sf->uc.uc_mcontext; addr = frame; - if (vdso32_rt_sigtramp && current->mm->context.vdso_base) { + if (vdso32_rt_sigtramp && current->mm->context.vdso_base != ~0UL) { if (save_user_regs(regs, frame, 0, 1)) goto badframe; regs->link = current->mm->context.vdso_base + vdso32_rt_sigtramp; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/powerpc/kernel/signal_64.c linux-2.6.36.4-pax/arch/powerpc/kernel/signal_64.c --- linux-2.6.36.4/arch/powerpc/kernel/signal_64.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/powerpc/kernel/signal_64.c 2010-10-27 22:58:07.000000000 +0200 @@ -429,7 +429,7 @@ int handle_rt_signal64(int signr, struct current->thread.fpscr.val = 0; /* Set up to return from userspace. */ - if (vdso64_rt_sigtramp && current->mm->context.vdso_base) { + if (vdso64_rt_sigtramp && current->mm->context.vdso_base != ~0UL) { regs->link = current->mm->context.vdso_base + vdso64_rt_sigtramp; } else { err |= setup_trampoline(__NR_rt_sigreturn, &frame->tramp[0]); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/powerpc/kernel/vdso.c linux-2.6.36.4-pax/arch/powerpc/kernel/vdso.c --- linux-2.6.36.4/arch/powerpc/kernel/vdso.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/powerpc/kernel/vdso.c 2010-10-27 22:58:07.000000000 +0200 @@ -36,6 +36,7 @@ #include #include #include +#include #include "setup.h" @@ -220,7 +221,7 @@ int arch_setup_additional_pages(struct l vdso_base = VDSO32_MBASE; #endif - current->mm->context.vdso_base = 0; + current->mm->context.vdso_base = ~0UL; /* vDSO has a problem and was disabled, just don't "enable" it for the * process @@ -240,7 +241,7 @@ int arch_setup_additional_pages(struct l vdso_base = get_unmapped_area(NULL, vdso_base, (vdso_pages << PAGE_SHIFT) + ((VDSO_ALIGNMENT - 1) & PAGE_MASK), - 0, 0); + 0, MAP_PRIVATE | MAP_EXECUTABLE); if (IS_ERR_VALUE(vdso_base)) { rc = vdso_base; goto fail_mmapsem; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/powerpc/kernel/vio.c linux-2.6.36.4-pax/arch/powerpc/kernel/vio.c --- linux-2.6.36.4/arch/powerpc/kernel/vio.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/powerpc/kernel/vio.c 2010-10-27 22:58:44.000000000 +0200 @@ -602,11 +602,12 @@ static void vio_dma_iommu_unmap_sg(struc vio_cmo_dealloc(viodev, alloc_size); } -struct dma_map_ops vio_dma_mapping_ops = { +static const struct dma_map_ops vio_dma_mapping_ops = { .alloc_coherent = vio_dma_iommu_alloc_coherent, .free_coherent = vio_dma_iommu_free_coherent, .map_sg = vio_dma_iommu_map_sg, .unmap_sg = vio_dma_iommu_unmap_sg, + .dma_supported = dma_iommu_dma_supported, .map_page = vio_dma_iommu_map_page, .unmap_page = vio_dma_iommu_unmap_page, @@ -860,7 +861,6 @@ static void vio_cmo_bus_remove(struct vi static void vio_cmo_set_dma_ops(struct vio_dev *viodev) { - vio_dma_mapping_ops.dma_supported = dma_iommu_ops.dma_supported; viodev->dev.archdata.dma_ops = &vio_dma_mapping_ops; } diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/powerpc/lib/usercopy_64.c linux-2.6.36.4-pax/arch/powerpc/lib/usercopy_64.c --- linux-2.6.36.4/arch/powerpc/lib/usercopy_64.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/powerpc/lib/usercopy_64.c 2010-10-27 22:58:07.000000000 +0200 @@ -9,22 +9,6 @@ #include #include -unsigned long copy_from_user(void *to, const void __user *from, unsigned long n) -{ - if (likely(access_ok(VERIFY_READ, from, n))) - n = __copy_from_user(to, from, n); - else - memset(to, 0, n); - return n; -} - -unsigned long copy_to_user(void __user *to, const void *from, unsigned long n) -{ - if (likely(access_ok(VERIFY_WRITE, to, n))) - n = __copy_to_user(to, from, n); - return n; -} - unsigned long copy_in_user(void __user *to, const void __user *from, unsigned long n) { @@ -35,7 +19,5 @@ unsigned long copy_in_user(void __user * return n; } -EXPORT_SYMBOL(copy_from_user); -EXPORT_SYMBOL(copy_to_user); EXPORT_SYMBOL(copy_in_user); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/powerpc/mm/fault.c linux-2.6.36.4-pax/arch/powerpc/mm/fault.c --- linux-2.6.36.4/arch/powerpc/mm/fault.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/powerpc/mm/fault.c 2010-10-27 22:58:07.000000000 +0200 @@ -30,6 +30,10 @@ #include #include #include +#include +#include +#include +#include #include #include @@ -41,6 +45,7 @@ #include #include #include +#include #ifdef CONFIG_KPROBES static inline int notify_page_fault(struct pt_regs *regs) @@ -64,6 +69,33 @@ static inline int notify_page_fault(stru } #endif +#ifdef CONFIG_PAX_PAGEEXEC +/* + * PaX: decide what to do with offenders (regs->nip = fault address) + * + * returns 1 when task should be killed + */ +static int pax_handle_fetch_fault(struct pt_regs *regs) +{ + return 1; +} + +void pax_report_insns(void *pc, void *sp) +{ + unsigned long i; + + printk(KERN_ERR "PAX: bytes at PC: "); + for (i = 0; i < 5; i++) { + unsigned int c; + if (get_user(c, (unsigned int __user *)pc+i)) + printk(KERN_CONT "???????? "); + else + printk(KERN_CONT "%08x ", c); + } + printk("\n"); +} +#endif + /* * Check whether the instruction at regs->nip is a store using * an update addressing form which will update r1. @@ -134,7 +166,7 @@ int __kprobes do_page_fault(struct pt_re * indicate errors in DSISR but can validly be set in SRR1. */ if (trap == 0x400) - error_code &= 0x48200000; + error_code &= 0x58200000; else is_write = error_code & DSISR_ISSTORE; #else @@ -257,7 +289,7 @@ good_area: * "undefined". Of those that can be set, this is the only * one which seems bad. */ - if (error_code & 0x10000000) + if (error_code & DSISR_GUARDED) /* Guarded storage error. */ goto bad_area; #endif /* CONFIG_8xx */ @@ -272,7 +304,7 @@ good_area: * processors use the same I/D cache coherency mechanism * as embedded. */ - if (error_code & DSISR_PROTFAULT) + if (error_code & (DSISR_PROTFAULT | DSISR_GUARDED)) goto bad_area; #endif /* CONFIG_PPC_STD_MMU */ @@ -341,6 +373,23 @@ bad_area: bad_area_nosemaphore: /* User mode accesses cause a SIGSEGV */ if (user_mode(regs)) { + +#ifdef CONFIG_PAX_PAGEEXEC + if (mm->pax_flags & MF_PAX_PAGEEXEC) { +#ifdef CONFIG_PPC_STD_MMU + if (is_exec && (error_code & (DSISR_PROTFAULT | DSISR_GUARDED))) { +#else + if (is_exec && regs->nip == address) { +#endif + switch (pax_handle_fetch_fault(regs)) { + } + + pax_report_fault(regs, (void *)regs->nip, (void *)regs->gpr[PT_R1]); + do_group_exit(SIGKILL); + } + } +#endif + _exception(SIGSEGV, regs, code, address); return 0; } diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/powerpc/mm/mmap_64.c linux-2.6.36.4-pax/arch/powerpc/mm/mmap_64.c --- linux-2.6.36.4/arch/powerpc/mm/mmap_64.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/powerpc/mm/mmap_64.c 2010-10-27 22:58:07.000000000 +0200 @@ -99,10 +99,22 @@ void arch_pick_mmap_layout(struct mm_str */ if (mmap_is_legacy()) { mm->mmap_base = TASK_UNMAPPED_BASE; + +#ifdef CONFIG_PAX_RANDMMAP + if (mm->pax_flags & MF_PAX_RANDMMAP) + mm->mmap_base += mm->delta_mmap; +#endif + mm->get_unmapped_area = arch_get_unmapped_area; mm->unmap_area = arch_unmap_area; } else { mm->mmap_base = mmap_base(); + +#ifdef CONFIG_PAX_RANDMMAP + if (mm->pax_flags & MF_PAX_RANDMMAP) + mm->mmap_base -= mm->delta_mmap + mm->delta_stack; +#endif + mm->get_unmapped_area = arch_get_unmapped_area_topdown; mm->unmap_area = arch_unmap_area_topdown; } diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/powerpc/mm/slice.c linux-2.6.36.4-pax/arch/powerpc/mm/slice.c --- linux-2.6.36.4/arch/powerpc/mm/slice.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/powerpc/mm/slice.c 2010-10-27 22:58:07.000000000 +0200 @@ -98,7 +98,7 @@ static int slice_area_is_free(struct mm_ if ((mm->task_size - len) < addr) return 0; vma = find_vma(mm, addr); - return (!vma || (addr + len) <= vma->vm_start); + return check_heap_stack_gap(vma, addr, len); } static int slice_low_has_vma(struct mm_struct *mm, unsigned long slice) @@ -256,7 +256,7 @@ full_search: addr = _ALIGN_UP(addr + 1, 1ul << SLICE_HIGH_SHIFT); continue; } - if (!vma || addr + len <= vma->vm_start) { + if (check_heap_stack_gap(vma, addr, len)) { /* * Remember the place where we stopped the search: */ @@ -336,7 +336,7 @@ static unsigned long slice_find_area_top * return with success: */ vma = find_vma(mm, addr); - if (!vma || (addr + len) <= vma->vm_start) { + if (check_heap_stack_gap(vma, addr, len)) { /* remember the address as a hint for next time */ if (use_cache) mm->free_area_cache = addr; @@ -426,6 +426,11 @@ unsigned long slice_get_unmapped_area(un if (fixed && addr > (mm->task_size - len)) return -EINVAL; +#ifdef CONFIG_PAX_RANDMMAP + if (!fixed && (mm->pax_flags & MF_PAX_RANDMMAP)) + addr = 0; +#endif + /* If hint, make sure it matches our alignment restrictions */ if (!fixed && addr) { addr = _ALIGN_UP(addr, 1ul << pshift); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/powerpc/platforms/52xx/lite5200_pm.c linux-2.6.36.4-pax/arch/powerpc/platforms/52xx/lite5200_pm.c --- linux-2.6.36.4/arch/powerpc/platforms/52xx/lite5200_pm.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/powerpc/platforms/52xx/lite5200_pm.c 2010-10-27 22:58:44.000000000 +0200 @@ -232,7 +232,7 @@ static void lite5200_pm_end(void) lite5200_pm_target_state = PM_SUSPEND_ON; } -static struct platform_suspend_ops lite5200_pm_ops = { +static const struct platform_suspend_ops lite5200_pm_ops = { .valid = lite5200_pm_valid, .begin = lite5200_pm_begin, .prepare = lite5200_pm_prepare, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/powerpc/platforms/52xx/mpc52xx_pm.c linux-2.6.36.4-pax/arch/powerpc/platforms/52xx/mpc52xx_pm.c --- linux-2.6.36.4/arch/powerpc/platforms/52xx/mpc52xx_pm.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/powerpc/platforms/52xx/mpc52xx_pm.c 2010-10-27 22:58:44.000000000 +0200 @@ -186,7 +186,7 @@ void mpc52xx_pm_finish(void) iounmap(mbar); } -static struct platform_suspend_ops mpc52xx_pm_ops = { +static const struct platform_suspend_ops mpc52xx_pm_ops = { .valid = mpc52xx_pm_valid, .prepare = mpc52xx_pm_prepare, .enter = mpc52xx_pm_enter, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/powerpc/platforms/83xx/suspend.c linux-2.6.36.4-pax/arch/powerpc/platforms/83xx/suspend.c --- linux-2.6.36.4/arch/powerpc/platforms/83xx/suspend.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/powerpc/platforms/83xx/suspend.c 2010-10-27 22:58:44.000000000 +0200 @@ -311,7 +311,7 @@ static int mpc83xx_is_pci_agent(void) return ret; } -static struct platform_suspend_ops mpc83xx_suspend_ops = { +static const struct platform_suspend_ops mpc83xx_suspend_ops = { .valid = mpc83xx_suspend_valid, .begin = mpc83xx_suspend_begin, .enter = mpc83xx_suspend_enter, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/powerpc/platforms/cell/iommu.c linux-2.6.36.4-pax/arch/powerpc/platforms/cell/iommu.c --- linux-2.6.36.4/arch/powerpc/platforms/cell/iommu.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/powerpc/platforms/cell/iommu.c 2010-10-27 22:58:44.000000000 +0200 @@ -642,7 +642,7 @@ static int dma_fixed_dma_supported(struc static int dma_set_mask_and_switch(struct device *dev, u64 dma_mask); -struct dma_map_ops dma_iommu_fixed_ops = { +const struct dma_map_ops dma_iommu_fixed_ops = { .alloc_coherent = dma_fixed_alloc_coherent, .free_coherent = dma_fixed_free_coherent, .map_sg = dma_fixed_map_sg, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/powerpc/platforms/ps3/system-bus.c linux-2.6.36.4-pax/arch/powerpc/platforms/ps3/system-bus.c --- linux-2.6.36.4/arch/powerpc/platforms/ps3/system-bus.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/powerpc/platforms/ps3/system-bus.c 2010-10-27 22:58:44.000000000 +0200 @@ -695,7 +695,7 @@ static int ps3_dma_supported(struct devi return mask >= DMA_BIT_MASK(32); } -static struct dma_map_ops ps3_sb_dma_ops = { +static const struct dma_map_ops ps3_sb_dma_ops = { .alloc_coherent = ps3_alloc_coherent, .free_coherent = ps3_free_coherent, .map_sg = ps3_sb_map_sg, @@ -705,7 +705,7 @@ static struct dma_map_ops ps3_sb_dma_ops .unmap_page = ps3_unmap_page, }; -static struct dma_map_ops ps3_ioc0_dma_ops = { +static const struct dma_map_ops ps3_ioc0_dma_ops = { .alloc_coherent = ps3_alloc_coherent, .free_coherent = ps3_free_coherent, .map_sg = ps3_ioc0_map_sg, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/powerpc/platforms/pseries/suspend.c linux-2.6.36.4-pax/arch/powerpc/platforms/pseries/suspend.c --- linux-2.6.36.4/arch/powerpc/platforms/pseries/suspend.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/powerpc/platforms/pseries/suspend.c 2010-10-27 22:58:44.000000000 +0200 @@ -153,7 +153,7 @@ static struct sysdev_class suspend_sysde .name = "power", }; -static struct platform_suspend_ops pseries_suspend_ops = { +static const struct platform_suspend_ops pseries_suspend_ops = { .valid = suspend_valid_only_mem, .begin = pseries_suspend_begin, .prepare_late = pseries_prepare_late, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/powerpc/sysdev/fsl_pmc.c linux-2.6.36.4-pax/arch/powerpc/sysdev/fsl_pmc.c --- linux-2.6.36.4/arch/powerpc/sysdev/fsl_pmc.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/powerpc/sysdev/fsl_pmc.c 2010-10-27 22:58:44.000000000 +0200 @@ -53,7 +53,7 @@ static int pmc_suspend_valid(suspend_sta return 1; } -static struct platform_suspend_ops pmc_suspend_ops = { +static const struct platform_suspend_ops pmc_suspend_ops = { .valid = pmc_suspend_valid, .enter = pmc_suspend_enter, }; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/s390/Kconfig linux-2.6.36.4-pax/arch/s390/Kconfig --- linux-2.6.36.4/arch/s390/Kconfig 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/s390/Kconfig 2010-10-27 22:58:07.000000000 +0200 @@ -227,13 +227,12 @@ config AUDIT_ARCH config S390_EXEC_PROTECT bool "Data execute protection" + default y help This option allows to enable a buffer overflow protection for user - space programs and it also selects the addressing mode option above. - The kernel parameter noexec=on will enable this feature and also - switch the addressing modes, default is disabled. Enabling this (via - kernel parameter) on machines earlier than IBM System z9-109 EC/BC - will reduce system performance. + space programs. + Enabling this on machines earlier than IBM System z9-109 EC/BC will + reduce system performance. comment "Code generation options" diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/s390/include/asm/elf.h linux-2.6.36.4-pax/arch/s390/include/asm/elf.h --- linux-2.6.36.4/arch/s390/include/asm/elf.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/s390/include/asm/elf.h 2010-10-27 22:58:07.000000000 +0200 @@ -163,6 +163,13 @@ extern unsigned int vdso_enabled; that it will "exec", and that there is sufficient room for the brk. */ #define ELF_ET_DYN_BASE (STACK_TOP / 3 * 2) +#ifdef CONFIG_PAX_ASLR +#define PAX_ELF_ET_DYN_BASE (test_thread_flag(TIF_31BIT) ? 0x10000UL : 0x80000000UL) + +#define PAX_DELTA_MMAP_LEN (test_thread_flag(TIF_31BIT) ? 15 : 26 ) +#define PAX_DELTA_STACK_LEN (test_thread_flag(TIF_31BIT) ? 15 : 26 ) +#endif + /* This yields a mask that user programs can use to figure out what instruction set this CPU supports. */ diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/s390/include/asm/uaccess.h linux-2.6.36.4-pax/arch/s390/include/asm/uaccess.h --- linux-2.6.36.4/arch/s390/include/asm/uaccess.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/s390/include/asm/uaccess.h 2010-10-27 22:58:07.000000000 +0200 @@ -234,6 +234,10 @@ static inline unsigned long __must_check copy_to_user(void __user *to, const void *from, unsigned long n) { might_fault(); + + if ((long)n < 0) + return n; + if (access_ok(VERIFY_WRITE, to, n)) n = __copy_to_user(to, from, n); return n; @@ -259,6 +263,9 @@ copy_to_user(void __user *to, const void static inline unsigned long __must_check __copy_from_user(void *to, const void __user *from, unsigned long n) { + if ((long)n < 0) + return n; + if (__builtin_constant_p(n) && (n <= 256)) return uaccess.copy_from_user_small(n, from, to); else @@ -293,6 +300,10 @@ copy_from_user(void *to, const void __us unsigned int sz = __compiletime_object_size(to); might_fault(); + + if ((long)n < 0) + return n; + if (unlikely(sz != -1 && sz < n)) { copy_from_user_overflow(); return n; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/s390/kernel/module.c linux-2.6.36.4-pax/arch/s390/kernel/module.c --- linux-2.6.36.4/arch/s390/kernel/module.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/s390/kernel/module.c 2010-10-27 22:58:07.000000000 +0200 @@ -168,11 +168,11 @@ module_frob_arch_sections(Elf_Ehdr *hdr, /* Increase core size by size of got & plt and set start offsets for got and plt. */ - me->core_size = ALIGN(me->core_size, 4); - me->arch.got_offset = me->core_size; - me->core_size += me->arch.got_size; - me->arch.plt_offset = me->core_size; - me->core_size += me->arch.plt_size; + me->core_size_rw = ALIGN(me->core_size_rw, 4); + me->arch.got_offset = me->core_size_rw; + me->core_size_rw += me->arch.got_size; + me->arch.plt_offset = me->core_size_rx; + me->core_size_rx += me->arch.plt_size; return 0; } @@ -258,7 +258,7 @@ apply_rela(Elf_Rela *rela, Elf_Addr base if (info->got_initialized == 0) { Elf_Addr *gotent; - gotent = me->module_core + me->arch.got_offset + + gotent = me->module_core_rw + me->arch.got_offset + info->got_offset; *gotent = val; info->got_initialized = 1; @@ -282,7 +282,7 @@ apply_rela(Elf_Rela *rela, Elf_Addr base else if (r_type == R_390_GOTENT || r_type == R_390_GOTPLTENT) *(unsigned int *) loc = - (val + (Elf_Addr) me->module_core - loc) >> 1; + (val + (Elf_Addr) me->module_core_rw - loc) >> 1; else if (r_type == R_390_GOT64 || r_type == R_390_GOTPLT64) *(unsigned long *) loc = val; @@ -296,7 +296,7 @@ apply_rela(Elf_Rela *rela, Elf_Addr base case R_390_PLTOFF64: /* 16 bit offset from GOT to PLT. */ if (info->plt_initialized == 0) { unsigned int *ip; - ip = me->module_core + me->arch.plt_offset + + ip = me->module_core_rx + me->arch.plt_offset + info->plt_offset; #ifndef CONFIG_64BIT ip[0] = 0x0d105810; /* basr 1,0; l 1,6(1); br 1 */ @@ -321,7 +321,7 @@ apply_rela(Elf_Rela *rela, Elf_Addr base val - loc + 0xffffUL < 0x1ffffeUL) || (r_type == R_390_PLT32DBL && val - loc + 0xffffffffULL < 0x1fffffffeULL))) - val = (Elf_Addr) me->module_core + + val = (Elf_Addr) me->module_core_rx + me->arch.plt_offset + info->plt_offset; val += rela->r_addend - loc; @@ -343,7 +343,7 @@ apply_rela(Elf_Rela *rela, Elf_Addr base case R_390_GOTOFF32: /* 32 bit offset to GOT. */ case R_390_GOTOFF64: /* 64 bit offset to GOT. */ val = val + rela->r_addend - - ((Elf_Addr) me->module_core + me->arch.got_offset); + ((Elf_Addr) me->module_core_rw + me->arch.got_offset); if (r_type == R_390_GOTOFF16) *(unsigned short *) loc = val; else if (r_type == R_390_GOTOFF32) @@ -353,7 +353,7 @@ apply_rela(Elf_Rela *rela, Elf_Addr base break; case R_390_GOTPC: /* 32 bit PC relative offset to GOT. */ case R_390_GOTPCDBL: /* 32 bit PC rel. off. to GOT shifted by 1. */ - val = (Elf_Addr) me->module_core + me->arch.got_offset + + val = (Elf_Addr) me->module_core_rw + me->arch.got_offset + rela->r_addend - loc; if (r_type == R_390_GOTPC) *(unsigned int *) loc = val; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/s390/kernel/setup.c linux-2.6.36.4-pax/arch/s390/kernel/setup.c --- linux-2.6.36.4/arch/s390/kernel/setup.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/s390/kernel/setup.c 2010-10-27 22:58:07.000000000 +0200 @@ -281,7 +281,7 @@ static int __init early_parse_mem(char * } early_param("mem", early_parse_mem); -unsigned int user_mode = HOME_SPACE_MODE; +unsigned int user_mode = SECONDARY_SPACE_MODE; EXPORT_SYMBOL_GPL(user_mode); static int set_amode_and_uaccess(unsigned long user_amode, @@ -310,17 +310,6 @@ static int set_amode_and_uaccess(unsigne } } -/* - * Switch kernel/user addressing modes? - */ -static int __init early_parse_switch_amode(char *p) -{ - if (user_mode != SECONDARY_SPACE_MODE) - user_mode = PRIMARY_SPACE_MODE; - return 0; -} -early_param("switch_amode", early_parse_switch_amode); - static int __init early_parse_user_mode(char *p) { if (p && strcmp(p, "primary") == 0) @@ -337,20 +326,6 @@ static int __init early_parse_user_mode( } early_param("user_mode", early_parse_user_mode); -#ifdef CONFIG_S390_EXEC_PROTECT -/* - * Enable execute protection? - */ -static int __init early_parse_noexec(char *p) -{ - if (!strncmp(p, "off", 3)) - return 0; - user_mode = SECONDARY_SPACE_MODE; - return 0; -} -early_param("noexec", early_parse_noexec); -#endif /* CONFIG_S390_EXEC_PROTECT */ - static void setup_addressing_mode(void) { if (user_mode == SECONDARY_SPACE_MODE) { diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/s390/mm/maccess.c linux-2.6.36.4-pax/arch/s390/mm/maccess.c --- linux-2.6.36.4/arch/s390/mm/maccess.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/s390/mm/maccess.c 2010-10-27 22:58:44.000000000 +0200 @@ -45,7 +45,7 @@ static long probe_kernel_write_odd(void return rc ? rc : count; } -long probe_kernel_write(void *dst, void *src, size_t size) +long probe_kernel_write(void *dst, const void *src, size_t size) { long copied = 0; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/s390/mm/mmap.c linux-2.6.36.4-pax/arch/s390/mm/mmap.c --- linux-2.6.36.4/arch/s390/mm/mmap.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/s390/mm/mmap.c 2010-10-27 22:58:07.000000000 +0200 @@ -78,10 +78,22 @@ void arch_pick_mmap_layout(struct mm_str */ if (mmap_is_legacy()) { mm->mmap_base = TASK_UNMAPPED_BASE; + +#ifdef CONFIG_PAX_RANDMMAP + if (mm->pax_flags & MF_PAX_RANDMMAP) + mm->mmap_base += mm->delta_mmap; +#endif + mm->get_unmapped_area = arch_get_unmapped_area; mm->unmap_area = arch_unmap_area; } else { mm->mmap_base = mmap_base(); + +#ifdef CONFIG_PAX_RANDMMAP + if (mm->pax_flags & MF_PAX_RANDMMAP) + mm->mmap_base -= mm->delta_mmap + mm->delta_stack; +#endif + mm->get_unmapped_area = arch_get_unmapped_area_topdown; mm->unmap_area = arch_unmap_area_topdown; } @@ -153,10 +165,22 @@ void arch_pick_mmap_layout(struct mm_str */ if (mmap_is_legacy()) { mm->mmap_base = TASK_UNMAPPED_BASE; + +#ifdef CONFIG_PAX_RANDMMAP + if (mm->pax_flags & MF_PAX_RANDMMAP) + mm->mmap_base += mm->delta_mmap; +#endif + mm->get_unmapped_area = s390_get_unmapped_area; mm->unmap_area = arch_unmap_area; } else { mm->mmap_base = mmap_base(); + +#ifdef CONFIG_PAX_RANDMMAP + if (mm->pax_flags & MF_PAX_RANDMMAP) + mm->mmap_base -= mm->delta_mmap + mm->delta_stack; +#endif + mm->get_unmapped_area = s390_get_unmapped_area_topdown; mm->unmap_area = arch_unmap_area_topdown; } diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/score/include/asm/system.h linux-2.6.36.4-pax/arch/score/include/asm/system.h --- linux-2.6.36.4/arch/score/include/asm/system.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/score/include/asm/system.h 2010-12-14 21:18:01.000000000 +0100 @@ -17,7 +17,7 @@ do { \ #define finish_arch_switch(prev) do {} while (0) typedef void (*vi_handler_t)(void); -extern unsigned long arch_align_stack(unsigned long sp); +#define arch_align_stack(x) (x) #define mb() barrier() #define rmb() barrier() diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/score/kernel/process.c linux-2.6.36.4-pax/arch/score/kernel/process.c --- linux-2.6.36.4/arch/score/kernel/process.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/score/kernel/process.c 2010-12-14 21:18:01.000000000 +0100 @@ -161,8 +161,3 @@ unsigned long get_wchan(struct task_stru return task_pt_regs(task)->cp0_epc; } - -unsigned long arch_align_stack(unsigned long sp) -{ - return sp; -} diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/sh/boards/mach-hp6xx/pm.c linux-2.6.36.4-pax/arch/sh/boards/mach-hp6xx/pm.c --- linux-2.6.36.4/arch/sh/boards/mach-hp6xx/pm.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/sh/boards/mach-hp6xx/pm.c 2010-10-27 22:58:44.000000000 +0200 @@ -143,7 +143,7 @@ static int hp6x0_pm_enter(suspend_state_ return 0; } -static struct platform_suspend_ops hp6x0_pm_ops = { +static const struct platform_suspend_ops hp6x0_pm_ops = { .enter = hp6x0_pm_enter, .valid = suspend_valid_only_mem, }; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/sh/include/asm/dma-mapping.h linux-2.6.36.4-pax/arch/sh/include/asm/dma-mapping.h --- linux-2.6.36.4/arch/sh/include/asm/dma-mapping.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/sh/include/asm/dma-mapping.h 2010-10-27 22:58:44.000000000 +0200 @@ -1,10 +1,10 @@ #ifndef __ASM_SH_DMA_MAPPING_H #define __ASM_SH_DMA_MAPPING_H -extern struct dma_map_ops *dma_ops; +extern const struct dma_map_ops *dma_ops; extern void no_iommu_init(void); -static inline struct dma_map_ops *get_dma_ops(struct device *dev) +static inline const struct dma_map_ops *get_dma_ops(struct device *dev) { return dma_ops; } @@ -14,7 +14,7 @@ static inline struct dma_map_ops *get_dm static inline int dma_supported(struct device *dev, u64 mask) { - struct dma_map_ops *ops = get_dma_ops(dev); + const struct dma_map_ops *ops = get_dma_ops(dev); if (ops->dma_supported) return ops->dma_supported(dev, mask); @@ -24,7 +24,7 @@ static inline int dma_supported(struct d static inline int dma_set_mask(struct device *dev, u64 mask) { - struct dma_map_ops *ops = get_dma_ops(dev); + const struct dma_map_ops *ops = get_dma_ops(dev); if (!dev->dma_mask || !dma_supported(dev, mask)) return -EIO; @@ -44,7 +44,7 @@ void dma_cache_sync(struct device *dev, static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr) { - struct dma_map_ops *ops = get_dma_ops(dev); + const struct dma_map_ops *ops = get_dma_ops(dev); if (ops->mapping_error) return ops->mapping_error(dev, dma_addr); @@ -55,7 +55,7 @@ static inline int dma_mapping_error(stru static inline void *dma_alloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_handle, gfp_t gfp) { - struct dma_map_ops *ops = get_dma_ops(dev); + const struct dma_map_ops *ops = get_dma_ops(dev); void *memory; if (dma_alloc_from_coherent(dev, size, dma_handle, &memory)) @@ -72,7 +72,7 @@ static inline void *dma_alloc_coherent(s static inline void dma_free_coherent(struct device *dev, size_t size, void *vaddr, dma_addr_t dma_handle) { - struct dma_map_ops *ops = get_dma_ops(dev); + const struct dma_map_ops *ops = get_dma_ops(dev); if (dma_release_from_coherent(dev, get_order(size), vaddr)) return; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/sh/kernel/cpu/shmobile/pm.c linux-2.6.36.4-pax/arch/sh/kernel/cpu/shmobile/pm.c --- linux-2.6.36.4/arch/sh/kernel/cpu/shmobile/pm.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/sh/kernel/cpu/shmobile/pm.c 2010-10-27 22:58:44.000000000 +0200 @@ -141,7 +141,7 @@ static int sh_pm_enter(suspend_state_t s return 0; } -static struct platform_suspend_ops sh_pm_ops = { +static const struct platform_suspend_ops sh_pm_ops = { .enter = sh_pm_enter, .valid = suspend_valid_only_mem, }; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/sh/kernel/dma-nommu.c linux-2.6.36.4-pax/arch/sh/kernel/dma-nommu.c --- linux-2.6.36.4/arch/sh/kernel/dma-nommu.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/sh/kernel/dma-nommu.c 2010-10-27 22:58:44.000000000 +0200 @@ -62,7 +62,7 @@ static void nommu_sync_sg(struct device } #endif -struct dma_map_ops nommu_dma_ops = { +const struct dma_map_ops nommu_dma_ops = { .alloc_coherent = dma_generic_alloc_coherent, .free_coherent = dma_generic_free_coherent, .map_page = nommu_map_page, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/sh/kernel/kgdb.c linux-2.6.36.4-pax/arch/sh/kernel/kgdb.c --- linux-2.6.36.4/arch/sh/kernel/kgdb.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/sh/kernel/kgdb.c 2010-10-27 22:58:44.000000000 +0200 @@ -319,7 +319,7 @@ void kgdb_arch_exit(void) unregister_die_notifier(&kgdb_notifier); } -struct kgdb_arch arch_kgdb_ops = { +const struct kgdb_arch arch_kgdb_ops = { /* Breakpoint instruction: trapa #0x3c */ #ifdef CONFIG_CPU_LITTLE_ENDIAN .gdb_bpt_instr = { 0x3c, 0xc3 }, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/sh/mm/consistent.c linux-2.6.36.4-pax/arch/sh/mm/consistent.c --- linux-2.6.36.4/arch/sh/mm/consistent.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/sh/mm/consistent.c 2010-10-27 22:58:44.000000000 +0200 @@ -22,7 +22,7 @@ #define PREALLOC_DMA_DEBUG_ENTRIES 4096 -struct dma_map_ops *dma_ops; +const struct dma_map_ops *dma_ops; EXPORT_SYMBOL(dma_ops); static int __init dma_init(void) diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/sh/mm/mmap.c linux-2.6.36.4-pax/arch/sh/mm/mmap.c --- linux-2.6.36.4/arch/sh/mm/mmap.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/sh/mm/mmap.c 2010-10-27 22:58:07.000000000 +0200 @@ -74,8 +74,7 @@ unsigned long arch_get_unmapped_area(str addr = PAGE_ALIGN(addr); vma = find_vma(mm, addr); - if (TASK_SIZE - len >= addr && - (!vma || addr + len <= vma->vm_start)) + if (TASK_SIZE - len >= addr && check_heap_stack_gap(vma, addr, len)) return addr; } @@ -106,7 +105,7 @@ full_search: } return -ENOMEM; } - if (likely(!vma || addr + len <= vma->vm_start)) { + if (likely(check_heap_stack_gap(vma, addr, len))) { /* * Remember the place where we stopped the search: */ @@ -157,8 +156,7 @@ arch_get_unmapped_area_topdown(struct fi addr = PAGE_ALIGN(addr); vma = find_vma(mm, addr); - if (TASK_SIZE - len >= addr && - (!vma || addr + len <= vma->vm_start)) + if (TASK_SIZE - len >= addr && check_heap_stack_gap(vma, addr, len)) return addr; } @@ -179,7 +177,7 @@ arch_get_unmapped_area_topdown(struct fi /* make sure it can fit in the remaining address space */ if (likely(addr > len)) { vma = find_vma(mm, addr-len); - if (!vma || addr <= vma->vm_start) { + if (check_heap_stack_gap(vma, addr - len, len)) { /* remember the address as a hint for next time */ return (mm->free_area_cache = addr-len); } @@ -199,7 +197,7 @@ arch_get_unmapped_area_topdown(struct fi * return with success: */ vma = find_vma(mm, addr); - if (likely(!vma || addr+len <= vma->vm_start)) { + if (likely(check_heap_stack_gap(vma, addr, len))) { /* remember the address as a hint for next time */ return (mm->free_area_cache = addr); } diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/sparc/include/asm/atomic_64.h linux-2.6.36.4-pax/arch/sparc/include/asm/atomic_64.h --- linux-2.6.36.4/arch/sparc/include/asm/atomic_64.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/sparc/include/asm/atomic_64.h 2010-10-27 22:58:07.000000000 +0200 @@ -14,18 +14,40 @@ #define ATOMIC64_INIT(i) { (i) } #define atomic_read(v) (*(volatile int *)&(v)->counter) +static inline int atomic_read_unchecked(const atomic_unchecked_t *v) +{ + return v->counter; +} #define atomic64_read(v) (*(volatile long *)&(v)->counter) +static inline long atomic64_read_unchecked(const atomic64_unchecked_t *v) +{ + return v->counter; +} #define atomic_set(v, i) (((v)->counter) = i) +static inline void atomic_set_unchecked(atomic_unchecked_t *v, int i) +{ + v->counter = i; +} #define atomic64_set(v, i) (((v)->counter) = i) +static inline void atomic64_set_unchecked(atomic64_unchecked_t *v, long i) +{ + v->counter = i; +} extern void atomic_add(int, atomic_t *); +extern void atomic_add_unchecked(int, atomic_unchecked_t *); extern void atomic64_add(long, atomic64_t *); +extern void atomic64_add_unchecked(long, atomic64_unchecked_t *); extern void atomic_sub(int, atomic_t *); +extern void atomic_sub_unchecked(int, atomic_unchecked_t *); extern void atomic64_sub(long, atomic64_t *); +extern void atomic64_sub_unchecked(long, atomic64_unchecked_t *); extern int atomic_add_ret(int, atomic_t *); +extern int atomic_add_ret_unchecked(int, atomic_unchecked_t *); extern long atomic64_add_ret(long, atomic64_t *); +extern long atomic64_add_ret_unchecked(long, atomic64_unchecked_t *); extern int atomic_sub_ret(int, atomic_t *); extern long atomic64_sub_ret(long, atomic64_t *); @@ -33,12 +55,24 @@ extern long atomic64_sub_ret(long, atomi #define atomic64_dec_return(v) atomic64_sub_ret(1, v) #define atomic_inc_return(v) atomic_add_ret(1, v) +static inline int atomic_inc_return_unchecked(atomic_unchecked_t *v) +{ + return atomic_add_ret_unchecked(1, v); +} #define atomic64_inc_return(v) atomic64_add_ret(1, v) +static inline long atomic64_inc_return_unchecked(atomic64_unchecked_t *v) +{ + return atomic64_add_ret_unchecked(1, v); +} #define atomic_sub_return(i, v) atomic_sub_ret(i, v) #define atomic64_sub_return(i, v) atomic64_sub_ret(i, v) #define atomic_add_return(i, v) atomic_add_ret(i, v) +static inline int atomic_add_return_unchecked(int i, atomic_unchecked_t *v) +{ + return atomic_add_ret_unchecked(i, v); +} #define atomic64_add_return(i, v) atomic64_add_ret(i, v) /* @@ -59,10 +93,26 @@ extern long atomic64_sub_ret(long, atomi #define atomic64_dec_and_test(v) (atomic64_sub_ret(1, v) == 0) #define atomic_inc(v) atomic_add(1, v) +static inline void atomic_inc_unchecked(atomic_unchecked_t *v) +{ + atomic_add_unchecked(1, v); +} #define atomic64_inc(v) atomic64_add(1, v) +static inline void atomic64_inc_unchecked(atomic64_unchecked_t *v) +{ + atomic64_add_unchecked(1, v); +} #define atomic_dec(v) atomic_sub(1, v) +static inline void atomic_dec_unchecked(atomic_unchecked_t *v) +{ + atomic_sub_unchecked(1, v); +} #define atomic64_dec(v) atomic64_sub(1, v) +static inline void atomic64_dec_unchecked(atomic64_unchecked_t *v) +{ + atomic64_sub_unchecked(1, v); +} #define atomic_add_negative(i, v) (atomic_add_ret(i, v) < 0) #define atomic64_add_negative(i, v) (atomic64_add_ret(i, v) < 0) @@ -72,17 +122,28 @@ extern long atomic64_sub_ret(long, atomi static inline int atomic_add_unless(atomic_t *v, int a, int u) { - int c, old; + int c, old, new; c = atomic_read(v); for (;;) { - if (unlikely(c == (u))) + if (unlikely(c == u)) break; - old = atomic_cmpxchg((v), c, c + (a)); + + asm volatile("addcc %2, %0, %0\n" + +#ifdef CONFIG_PAX_REFCOUNT + "tvs %%icc, 6\n" +#endif + + : "=r" (new) + : "0" (c), "ir" (a) + : "cc"); + + old = atomic_cmpxchg(v, c, new); if (likely(old == c)) break; c = old; } - return c != (u); + return c != u; } #define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0) @@ -93,17 +154,28 @@ static inline int atomic_add_unless(atom static inline long atomic64_add_unless(atomic64_t *v, long a, long u) { - long c, old; + long c, old, new; c = atomic64_read(v); for (;;) { - if (unlikely(c == (u))) + if (unlikely(c == u)) break; - old = atomic64_cmpxchg((v), c, c + (a)); + + asm volatile("addcc %2, %0, %0\n" + +#ifdef CONFIG_PAX_REFCOUNT + "tvs %%xcc, 6\n" +#endif + + : "=r" (new) + : "0" (c), "ir" (a) + : "cc"); + + old = atomic64_cmpxchg(v, c, new); if (likely(old == c)) break; c = old; } - return c != (u); + return c != u; } #define atomic64_inc_not_zero(v) atomic64_add_unless((v), 1, 0) diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/sparc/include/asm/dma-mapping.h linux-2.6.36.4-pax/arch/sparc/include/asm/dma-mapping.h --- linux-2.6.36.4/arch/sparc/include/asm/dma-mapping.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/sparc/include/asm/dma-mapping.h 2010-10-27 22:58:44.000000000 +0200 @@ -12,10 +12,10 @@ extern int dma_supported(struct device * #define dma_alloc_noncoherent(d, s, h, f) dma_alloc_coherent(d, s, h, f) #define dma_free_noncoherent(d, s, v, h) dma_free_coherent(d, s, v, h) -extern struct dma_map_ops *dma_ops, pci32_dma_ops; +extern const struct dma_map_ops *dma_ops, pci32_dma_ops; extern struct bus_type pci_bus_type; -static inline struct dma_map_ops *get_dma_ops(struct device *dev) +static inline const struct dma_map_ops *get_dma_ops(struct device *dev) { #if defined(CONFIG_SPARC32) && defined(CONFIG_PCI) if (dev->bus == &pci_bus_type) @@ -29,7 +29,7 @@ static inline struct dma_map_ops *get_dm static inline void *dma_alloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_handle, gfp_t flag) { - struct dma_map_ops *ops = get_dma_ops(dev); + const struct dma_map_ops *ops = get_dma_ops(dev); void *cpu_addr; cpu_addr = ops->alloc_coherent(dev, size, dma_handle, flag); @@ -40,7 +40,7 @@ static inline void *dma_alloc_coherent(s static inline void dma_free_coherent(struct device *dev, size_t size, void *cpu_addr, dma_addr_t dma_handle) { - struct dma_map_ops *ops = get_dma_ops(dev); + const struct dma_map_ops *ops = get_dma_ops(dev); debug_dma_free_coherent(dev, size, cpu_addr, dma_handle); ops->free_coherent(dev, size, cpu_addr, dma_handle); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/sparc/include/asm/elf_32.h linux-2.6.36.4-pax/arch/sparc/include/asm/elf_32.h --- linux-2.6.36.4/arch/sparc/include/asm/elf_32.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/sparc/include/asm/elf_32.h 2010-10-27 22:58:07.000000000 +0200 @@ -114,6 +114,13 @@ typedef struct { #define ELF_ET_DYN_BASE (TASK_UNMAPPED_BASE) +#ifdef CONFIG_PAX_ASLR +#define PAX_ELF_ET_DYN_BASE 0x10000UL + +#define PAX_DELTA_MMAP_LEN 16 +#define PAX_DELTA_STACK_LEN 16 +#endif + /* This yields a mask that user programs can use to figure out what instruction set this cpu supports. This can NOT be done in userspace on Sparc. */ diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/sparc/include/asm/elf_64.h linux-2.6.36.4-pax/arch/sparc/include/asm/elf_64.h --- linux-2.6.36.4/arch/sparc/include/asm/elf_64.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/sparc/include/asm/elf_64.h 2010-10-27 22:58:07.000000000 +0200 @@ -162,6 +162,12 @@ typedef struct { #define ELF_ET_DYN_BASE 0x0000010000000000UL #define COMPAT_ELF_ET_DYN_BASE 0x0000000070000000UL +#ifdef CONFIG_PAX_ASLR +#define PAX_ELF_ET_DYN_BASE (test_thread_flag(TIF_32BIT) ? 0x10000UL : 0x100000UL) + +#define PAX_DELTA_MMAP_LEN (test_thread_flag(TIF_32BIT) ? 14 : 28) +#define PAX_DELTA_STACK_LEN (test_thread_flag(TIF_32BIT) ? 15 : 29) +#endif /* This yields a mask that user programs can use to figure out what instruction set this cpu supports. */ diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/sparc/include/asm/pgtable_32.h linux-2.6.36.4-pax/arch/sparc/include/asm/pgtable_32.h --- linux-2.6.36.4/arch/sparc/include/asm/pgtable_32.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/sparc/include/asm/pgtable_32.h 2010-10-27 22:58:07.000000000 +0200 @@ -43,6 +43,13 @@ BTFIXUPDEF_SIMM13(user_ptrs_per_pgd) BTFIXUPDEF_INT(page_none) BTFIXUPDEF_INT(page_copy) BTFIXUPDEF_INT(page_readonly) + +#ifdef CONFIG_PAX_PAGEEXEC +BTFIXUPDEF_INT(page_shared_noexec) +BTFIXUPDEF_INT(page_copy_noexec) +BTFIXUPDEF_INT(page_readonly_noexec) +#endif + BTFIXUPDEF_INT(page_kernel) #define PMD_SHIFT SUN4C_PMD_SHIFT @@ -64,6 +71,16 @@ extern pgprot_t PAGE_SHARED; #define PAGE_COPY __pgprot(BTFIXUP_INT(page_copy)) #define PAGE_READONLY __pgprot(BTFIXUP_INT(page_readonly)) +#ifdef CONFIG_PAX_PAGEEXEC +extern pgprot_t PAGE_SHARED_NOEXEC; +# define PAGE_COPY_NOEXEC __pgprot(BTFIXUP_INT(page_copy_noexec)) +# define PAGE_READONLY_NOEXEC __pgprot(BTFIXUP_INT(page_readonly_noexec)) +#else +# define PAGE_SHARED_NOEXEC PAGE_SHARED +# define PAGE_COPY_NOEXEC PAGE_COPY +# define PAGE_READONLY_NOEXEC PAGE_READONLY +#endif + extern unsigned long page_kernel; #ifdef MODULE diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/sparc/include/asm/pgtsrmmu.h linux-2.6.36.4-pax/arch/sparc/include/asm/pgtsrmmu.h --- linux-2.6.36.4/arch/sparc/include/asm/pgtsrmmu.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/sparc/include/asm/pgtsrmmu.h 2010-10-27 22:58:07.000000000 +0200 @@ -115,6 +115,13 @@ SRMMU_EXEC | SRMMU_REF) #define SRMMU_PAGE_RDONLY __pgprot(SRMMU_VALID | SRMMU_CACHE | \ SRMMU_EXEC | SRMMU_REF) + +#ifdef CONFIG_PAX_PAGEEXEC +#define SRMMU_PAGE_SHARED_NOEXEC __pgprot(SRMMU_VALID | SRMMU_CACHE | SRMMU_WRITE | SRMMU_REF) +#define SRMMU_PAGE_COPY_NOEXEC __pgprot(SRMMU_VALID | SRMMU_CACHE | SRMMU_REF) +#define SRMMU_PAGE_RDONLY_NOEXEC __pgprot(SRMMU_VALID | SRMMU_CACHE | SRMMU_REF) +#endif + #define SRMMU_PAGE_KERNEL __pgprot(SRMMU_VALID | SRMMU_CACHE | SRMMU_PRIV | \ SRMMU_DIRTY | SRMMU_REF) diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/sparc/include/asm/spinlock_64.h linux-2.6.36.4-pax/arch/sparc/include/asm/spinlock_64.h --- linux-2.6.36.4/arch/sparc/include/asm/spinlock_64.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/sparc/include/asm/spinlock_64.h 2010-10-27 22:58:07.000000000 +0200 @@ -99,7 +99,12 @@ static void inline arch_read_lock(arch_r __asm__ __volatile__ ( "1: ldsw [%2], %0\n" " brlz,pn %0, 2f\n" -"4: add %0, 1, %1\n" +"4: addcc %0, 1, %1\n" + +#ifdef CONFIG_PAX_REFCOUNT +" tvs %%icc, 6\n" +#endif + " cas [%2], %0, %1\n" " cmp %0, %1\n" " bne,pn %%icc, 1b\n" @@ -112,7 +117,7 @@ static void inline arch_read_lock(arch_r " .previous" : "=&r" (tmp1), "=&r" (tmp2) : "r" (lock) - : "memory"); + : "memory", "cc"); } static int inline arch_read_trylock(arch_rwlock_t *lock) @@ -123,7 +128,12 @@ static int inline arch_read_trylock(arch "1: ldsw [%2], %0\n" " brlz,a,pn %0, 2f\n" " mov 0, %0\n" -" add %0, 1, %1\n" +" addcc %0, 1, %1\n" + +#ifdef CONFIG_PAX_REFCOUNT +" tvs %%icc, 6\n" +#endif + " cas [%2], %0, %1\n" " cmp %0, %1\n" " bne,pn %%icc, 1b\n" @@ -142,7 +152,12 @@ static void inline arch_read_unlock(arch __asm__ __volatile__( "1: lduw [%2], %0\n" -" sub %0, 1, %1\n" +" subcc %0, 1, %1\n" + +#ifdef CONFIG_PAX_REFCOUNT +" tvs %%icc, 6\n" +#endif + " cas [%2], %0, %1\n" " cmp %0, %1\n" " bne,pn %%xcc, 1b\n" diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/sparc/include/asm/uaccess.h linux-2.6.36.4-pax/arch/sparc/include/asm/uaccess.h --- linux-2.6.36.4/arch/sparc/include/asm/uaccess.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/sparc/include/asm/uaccess.h 2010-10-27 22:58:07.000000000 +0200 @@ -1,5 +1,13 @@ #ifndef ___ASM_SPARC_UACCESS_H #define ___ASM_SPARC_UACCESS_H + +#ifdef __KERNEL__ +#ifndef __ASSEMBLY__ +#include +extern void check_object_size(const void *ptr, unsigned long n, bool to); +#endif +#endif + #if defined(__sparc__) && defined(__arch64__) #include #else diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/sparc/include/asm/uaccess_32.h linux-2.6.36.4-pax/arch/sparc/include/asm/uaccess_32.h --- linux-2.6.36.4/arch/sparc/include/asm/uaccess_32.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/sparc/include/asm/uaccess_32.h 2010-10-27 22:58:07.000000000 +0200 @@ -249,27 +249,46 @@ extern unsigned long __copy_user(void __ static inline unsigned long copy_to_user(void __user *to, const void *from, unsigned long n) { - if (n && __access_ok((unsigned long) to, n)) + if ((long)n < 0) + return n; + + if (n && __access_ok((unsigned long) to, n)) { + if (!__builtin_constant_p(n)) + check_object_size(from, n, true); return __copy_user(to, (__force void __user *) from, n); - else + } else return n; } static inline unsigned long __copy_to_user(void __user *to, const void *from, unsigned long n) { + if ((long)n < 0) + return n; + + if (!__builtin_constant_p(n)) + check_object_size(from, n, true); + return __copy_user(to, (__force void __user *) from, n); } static inline unsigned long copy_from_user(void *to, const void __user *from, unsigned long n) { - if (n && __access_ok((unsigned long) from, n)) + if ((long)n < 0) + return n; + + if (n && __access_ok((unsigned long) from, n)) { + if (!__builtin_constant_p(n)) + check_object_size(to, n, false); return __copy_user((__force void __user *) to, from, n); - else + } else return n; } static inline unsigned long __copy_from_user(void *to, const void __user *from, unsigned long n) { + if ((long)n < 0) + return n; + return __copy_user((__force void __user *) to, from, n); } diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/sparc/include/asm/uaccess_64.h linux-2.6.36.4-pax/arch/sparc/include/asm/uaccess_64.h --- linux-2.6.36.4/arch/sparc/include/asm/uaccess_64.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/sparc/include/asm/uaccess_64.h 2010-10-27 22:58:07.000000000 +0200 @@ -10,6 +10,7 @@ #include #include #include +#include #include #include #include @@ -213,8 +214,15 @@ extern unsigned long copy_from_user_fixu static inline unsigned long __must_check copy_from_user(void *to, const void __user *from, unsigned long size) { - unsigned long ret = ___copy_from_user(to, from, size); + unsigned long ret; + if ((long)size < 0 || size > INT_MAX) + return size; + + if (!__builtin_constant_p(size)) + check_object_size(to, size, false); + + ret = ___copy_from_user(to, from, size); if (unlikely(ret)) ret = copy_from_user_fixup(to, from, size); @@ -230,8 +238,15 @@ extern unsigned long copy_to_user_fixup( static inline unsigned long __must_check copy_to_user(void __user *to, const void *from, unsigned long size) { - unsigned long ret = ___copy_to_user(to, from, size); + unsigned long ret; + + if ((long)size < 0 || size > INT_MAX) + return size; + + if (!__builtin_constant_p(size)) + check_object_size(from, size, true); + ret = ___copy_to_user(to, from, size); if (unlikely(ret)) ret = copy_to_user_fixup(to, from, size); return ret; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/sparc/kernel/Makefile linux-2.6.36.4-pax/arch/sparc/kernel/Makefile --- linux-2.6.36.4/arch/sparc/kernel/Makefile 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/sparc/kernel/Makefile 2010-10-27 22:58:07.000000000 +0200 @@ -3,7 +3,7 @@ # asflags-y := -ansi -ccflags-y := -Werror +#ccflags-y := -Werror extra-y := head_$(BITS).o extra-y += init_task.o diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/sparc/kernel/iommu.c linux-2.6.36.4-pax/arch/sparc/kernel/iommu.c --- linux-2.6.36.4/arch/sparc/kernel/iommu.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/sparc/kernel/iommu.c 2010-10-27 22:58:44.000000000 +0200 @@ -828,7 +828,7 @@ static void dma_4u_sync_sg_for_cpu(struc spin_unlock_irqrestore(&iommu->lock, flags); } -static struct dma_map_ops sun4u_dma_ops = { +static const struct dma_map_ops sun4u_dma_ops = { .alloc_coherent = dma_4u_alloc_coherent, .free_coherent = dma_4u_free_coherent, .map_page = dma_4u_map_page, @@ -839,7 +839,7 @@ static struct dma_map_ops sun4u_dma_ops .sync_sg_for_cpu = dma_4u_sync_sg_for_cpu, }; -struct dma_map_ops *dma_ops = &sun4u_dma_ops; +const struct dma_map_ops *dma_ops = &sun4u_dma_ops; EXPORT_SYMBOL(dma_ops); extern int pci64_dma_supported(struct pci_dev *pdev, u64 device_mask); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/sparc/kernel/ioport.c linux-2.6.36.4-pax/arch/sparc/kernel/ioport.c --- linux-2.6.36.4/arch/sparc/kernel/ioport.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/sparc/kernel/ioport.c 2010-10-27 22:58:44.000000000 +0200 @@ -397,7 +397,7 @@ static void sbus_sync_sg_for_device(stru BUG(); } -struct dma_map_ops sbus_dma_ops = { +const struct dma_map_ops sbus_dma_ops = { .alloc_coherent = sbus_alloc_coherent, .free_coherent = sbus_free_coherent, .map_page = sbus_map_page, @@ -408,7 +408,7 @@ struct dma_map_ops sbus_dma_ops = { .sync_sg_for_device = sbus_sync_sg_for_device, }; -struct dma_map_ops *dma_ops = &sbus_dma_ops; +const struct dma_map_ops *dma_ops = &sbus_dma_ops; EXPORT_SYMBOL(dma_ops); static int __init sparc_register_ioport(void) @@ -645,7 +645,7 @@ static void pci32_sync_sg_for_device(str } } -struct dma_map_ops pci32_dma_ops = { +const struct dma_map_ops pci32_dma_ops = { .alloc_coherent = pci32_alloc_coherent, .free_coherent = pci32_free_coherent, .map_page = pci32_map_page, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/sparc/kernel/kgdb_32.c linux-2.6.36.4-pax/arch/sparc/kernel/kgdb_32.c --- linux-2.6.36.4/arch/sparc/kernel/kgdb_32.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/sparc/kernel/kgdb_32.c 2010-10-27 22:58:44.000000000 +0200 @@ -164,7 +164,7 @@ void kgdb_arch_set_pc(struct pt_regs *re regs->npc = regs->pc + 4; } -struct kgdb_arch arch_kgdb_ops = { +const struct kgdb_arch arch_kgdb_ops = { /* Breakpoint instruction: ta 0x7d */ .gdb_bpt_instr = { 0x91, 0xd0, 0x20, 0x7d }, }; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/sparc/kernel/kgdb_64.c linux-2.6.36.4-pax/arch/sparc/kernel/kgdb_64.c --- linux-2.6.36.4/arch/sparc/kernel/kgdb_64.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/sparc/kernel/kgdb_64.c 2010-10-27 22:58:44.000000000 +0200 @@ -187,7 +187,7 @@ void kgdb_arch_set_pc(struct pt_regs *re regs->tnpc = regs->tpc + 4; } -struct kgdb_arch arch_kgdb_ops = { +const struct kgdb_arch arch_kgdb_ops = { /* Breakpoint instruction: ta 0x72 */ .gdb_bpt_instr = { 0x91, 0xd0, 0x20, 0x72 }, }; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/sparc/kernel/pci_sun4v.c linux-2.6.36.4-pax/arch/sparc/kernel/pci_sun4v.c --- linux-2.6.36.4/arch/sparc/kernel/pci_sun4v.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/sparc/kernel/pci_sun4v.c 2010-10-27 22:58:44.000000000 +0200 @@ -525,7 +525,7 @@ static void dma_4v_unmap_sg(struct devic spin_unlock_irqrestore(&iommu->lock, flags); } -static struct dma_map_ops sun4v_dma_ops = { +static const struct dma_map_ops sun4v_dma_ops = { .alloc_coherent = dma_4v_alloc_coherent, .free_coherent = dma_4v_free_coherent, .map_page = dma_4v_map_page, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/sparc/kernel/sys_sparc_32.c linux-2.6.36.4-pax/arch/sparc/kernel/sys_sparc_32.c --- linux-2.6.36.4/arch/sparc/kernel/sys_sparc_32.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/sparc/kernel/sys_sparc_32.c 2010-10-27 22:58:07.000000000 +0200 @@ -57,7 +57,7 @@ unsigned long arch_get_unmapped_area(str if (ARCH_SUN4C && len > 0x20000000) return -ENOMEM; if (!addr) - addr = TASK_UNMAPPED_BASE; + addr = current->mm->mmap_base; if (flags & MAP_SHARED) addr = COLOUR_ALIGN(addr); @@ -72,7 +72,7 @@ unsigned long arch_get_unmapped_area(str } if (TASK_SIZE - PAGE_SIZE - len < addr) return -ENOMEM; - if (!vmm || addr + len <= vmm->vm_start) + if (check_heap_stack_gap(vmm, addr, len)) return addr; addr = vmm->vm_end; if (flags & MAP_SHARED) diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/sparc/kernel/sys_sparc_64.c linux-2.6.36.4-pax/arch/sparc/kernel/sys_sparc_64.c --- linux-2.6.36.4/arch/sparc/kernel/sys_sparc_64.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/sparc/kernel/sys_sparc_64.c 2010-10-27 22:58:07.000000000 +0200 @@ -124,7 +124,7 @@ unsigned long arch_get_unmapped_area(str /* We do not accept a shared mapping if it would violate * cache aliasing constraints. */ - if ((flags & MAP_SHARED) && + if ((filp || (flags & MAP_SHARED)) && ((addr - (pgoff << PAGE_SHIFT)) & (SHMLBA - 1))) return -EINVAL; return addr; @@ -139,6 +139,10 @@ unsigned long arch_get_unmapped_area(str if (filp || (flags & MAP_SHARED)) do_color_align = 1; +#ifdef CONFIG_PAX_RANDMMAP + if (!(mm->pax_flags & MF_PAX_RANDMMAP)) +#endif + if (addr) { if (do_color_align) addr = COLOUR_ALIGN(addr, pgoff); @@ -146,15 +150,14 @@ unsigned long arch_get_unmapped_area(str addr = PAGE_ALIGN(addr); vma = find_vma(mm, addr); - if (task_size - len >= addr && - (!vma || addr + len <= vma->vm_start)) + if (task_size - len >= addr && check_heap_stack_gap(vma, addr, len)) return addr; } if (len > mm->cached_hole_size) { - start_addr = addr = mm->free_area_cache; + start_addr = addr = mm->free_area_cache; } else { - start_addr = addr = TASK_UNMAPPED_BASE; + start_addr = addr = mm->mmap_base; mm->cached_hole_size = 0; } @@ -174,14 +177,14 @@ full_search: vma = find_vma(mm, VA_EXCLUDE_END); } if (unlikely(task_size < addr)) { - if (start_addr != TASK_UNMAPPED_BASE) { - start_addr = addr = TASK_UNMAPPED_BASE; + if (start_addr != mm->mmap_base) { + start_addr = addr = mm->mmap_base; mm->cached_hole_size = 0; goto full_search; } return -ENOMEM; } - if (likely(!vma || addr + len <= vma->vm_start)) { + if (likely(check_heap_stack_gap(vma, addr, len))) { /* * Remember the place where we stopped the search: */ @@ -215,7 +218,7 @@ arch_get_unmapped_area_topdown(struct fi /* We do not accept a shared mapping if it would violate * cache aliasing constraints. */ - if ((flags & MAP_SHARED) && + if ((filp || (flags & MAP_SHARED)) && ((addr - (pgoff << PAGE_SHIFT)) & (SHMLBA - 1))) return -EINVAL; return addr; @@ -236,8 +239,7 @@ arch_get_unmapped_area_topdown(struct fi addr = PAGE_ALIGN(addr); vma = find_vma(mm, addr); - if (task_size - len >= addr && - (!vma || addr + len <= vma->vm_start)) + if (task_size - len >= addr && check_heap_stack_gap(vma, addr, len)) return addr; } @@ -258,7 +260,7 @@ arch_get_unmapped_area_topdown(struct fi /* make sure it can fit in the remaining address space */ if (likely(addr > len)) { vma = find_vma(mm, addr-len); - if (!vma || addr <= vma->vm_start) { + if (check_heap_stack_gap(vma, addr - len, len)) { /* remember the address as a hint for next time */ return (mm->free_area_cache = addr-len); } @@ -278,7 +280,7 @@ arch_get_unmapped_area_topdown(struct fi * return with success: */ vma = find_vma(mm, addr); - if (likely(!vma || addr+len <= vma->vm_start)) { + if (likely(check_heap_stack_gap(vma, addr, len))) { /* remember the address as a hint for next time */ return (mm->free_area_cache = addr); } @@ -385,6 +387,12 @@ void arch_pick_mmap_layout(struct mm_str gap == RLIM_INFINITY || sysctl_legacy_va_layout) { mm->mmap_base = TASK_UNMAPPED_BASE + random_factor; + +#ifdef CONFIG_PAX_RANDMMAP + if (mm->pax_flags & MF_PAX_RANDMMAP) + mm->mmap_base += mm->delta_mmap; +#endif + mm->get_unmapped_area = arch_get_unmapped_area; mm->unmap_area = arch_unmap_area; } else { @@ -397,6 +405,12 @@ void arch_pick_mmap_layout(struct mm_str gap = (task_size / 6 * 5); mm->mmap_base = PAGE_ALIGN(task_size - gap - random_factor); + +#ifdef CONFIG_PAX_RANDMMAP + if (mm->pax_flags & MF_PAX_RANDMMAP) + mm->mmap_base -= mm->delta_mmap + mm->delta_stack; +#endif + mm->get_unmapped_area = arch_get_unmapped_area_topdown; mm->unmap_area = arch_unmap_area_topdown; } diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/sparc/kernel/traps_64.c linux-2.6.36.4-pax/arch/sparc/kernel/traps_64.c --- linux-2.6.36.4/arch/sparc/kernel/traps_64.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/sparc/kernel/traps_64.c 2010-10-27 22:58:07.000000000 +0200 @@ -95,6 +95,12 @@ void bad_trap(struct pt_regs *regs, long lvl -= 0x100; if (regs->tstate & TSTATE_PRIV) { + +#ifdef CONFIG_PAX_REFCOUNT + if (lvl == 6) + pax_report_refcount_overflow(regs); +#endif + sprintf(buffer, "Kernel bad sw trap %lx", lvl); die_if_kernel(buffer, regs); } @@ -113,11 +119,16 @@ void bad_trap(struct pt_regs *regs, long void bad_trap_tl1(struct pt_regs *regs, long lvl) { char buffer[32]; - + if (notify_die(DIE_TRAP_TL1, "bad trap tl1", regs, 0, lvl, SIGTRAP) == NOTIFY_STOP) return; +#ifdef CONFIG_PAX_REFCOUNT + if (lvl == 6) + pax_report_refcount_overflow(regs); +#endif + dump_tl1_traplog((struct tl1_traplog *)(regs + 1)); sprintf (buffer, "Bad trap %lx at tl>0", lvl); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/sparc/lib/atomic_64.S linux-2.6.36.4-pax/arch/sparc/lib/atomic_64.S --- linux-2.6.36.4/arch/sparc/lib/atomic_64.S 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/sparc/lib/atomic_64.S 2010-10-27 22:58:07.000000000 +0200 @@ -18,7 +18,12 @@ atomic_add: /* %o0 = increment, %o1 = atomic_ptr */ BACKOFF_SETUP(%o2) 1: lduw [%o1], %g1 - add %g1, %o0, %g7 + addcc %g1, %o0, %g7 + +#ifdef CONFIG_PAX_REFCOUNT + tvs %icc, 6 +#endif + cas [%o1], %g1, %g7 cmp %g1, %g7 bne,pn %icc, BACKOFF_LABEL(2f, 1b) @@ -28,12 +33,32 @@ atomic_add: /* %o0 = increment, %o1 = at 2: BACKOFF_SPIN(%o2, %o3, 1b) .size atomic_add, .-atomic_add + .globl atomic_add_unchecked + .type atomic_add_unchecked,#function +atomic_add_unchecked: /* %o0 = increment, %o1 = atomic_ptr */ + BACKOFF_SETUP(%o2) +1: lduw [%o1], %g1 + add %g1, %o0, %g7 + cas [%o1], %g1, %g7 + cmp %g1, %g7 + bne,pn %icc, 2f + nop + retl + nop +2: BACKOFF_SPIN(%o2, %o3, 1b) + .size atomic_add_unchecked, .-atomic_add_unchecked + .globl atomic_sub .type atomic_sub,#function atomic_sub: /* %o0 = decrement, %o1 = atomic_ptr */ BACKOFF_SETUP(%o2) 1: lduw [%o1], %g1 - sub %g1, %o0, %g7 + subcc %g1, %o0, %g7 + +#ifdef CONFIG_PAX_REFCOUNT + tvs %icc, 6 +#endif + cas [%o1], %g1, %g7 cmp %g1, %g7 bne,pn %icc, BACKOFF_LABEL(2f, 1b) @@ -43,12 +68,32 @@ atomic_sub: /* %o0 = decrement, %o1 = at 2: BACKOFF_SPIN(%o2, %o3, 1b) .size atomic_sub, .-atomic_sub + .globl atomic_sub_unchecked + .type atomic_sub_unchecked,#function +atomic_sub_unchecked: /* %o0 = decrement, %o1 = atomic_ptr */ + BACKOFF_SETUP(%o2) +1: lduw [%o1], %g1 + sub %g1, %o0, %g7 + cas [%o1], %g1, %g7 + cmp %g1, %g7 + bne,pn %icc, 2f + nop + retl + nop +2: BACKOFF_SPIN(%o2, %o3, 1b) + .size atomic_sub_unchecked, .-atomic_sub_unchecked + .globl atomic_add_ret .type atomic_add_ret,#function atomic_add_ret: /* %o0 = increment, %o1 = atomic_ptr */ BACKOFF_SETUP(%o2) 1: lduw [%o1], %g1 - add %g1, %o0, %g7 + addcc %g1, %o0, %g7 + +#ifdef CONFIG_PAX_REFCOUNT + tvs %icc, 6 +#endif + cas [%o1], %g1, %g7 cmp %g1, %g7 bne,pn %icc, BACKOFF_LABEL(2f, 1b) @@ -58,12 +103,33 @@ atomic_add_ret: /* %o0 = increment, %o1 2: BACKOFF_SPIN(%o2, %o3, 1b) .size atomic_add_ret, .-atomic_add_ret + .globl atomic_add_ret_unchecked + .type atomic_add_ret_unchecked,#function +atomic_add_ret_unchecked: /* %o0 = increment, %o1 = atomic_ptr */ + BACKOFF_SETUP(%o2) +1: lduw [%o1], %g1 + addcc %g1, %o0, %g7 + cas [%o1], %g1, %g7 + cmp %g1, %g7 + bne,pn %icc, 2f + add %g7, %o0, %g7 + sra %g7, 0, %o0 + retl + nop +2: BACKOFF_SPIN(%o2, %o3, 1b) + .size atomic_add_ret_unchecked, .-atomic_add_ret_unchecked + .globl atomic_sub_ret .type atomic_sub_ret,#function atomic_sub_ret: /* %o0 = decrement, %o1 = atomic_ptr */ BACKOFF_SETUP(%o2) 1: lduw [%o1], %g1 - sub %g1, %o0, %g7 + subcc %g1, %o0, %g7 + +#ifdef CONFIG_PAX_REFCOUNT + tvs %icc, 6 +#endif + cas [%o1], %g1, %g7 cmp %g1, %g7 bne,pn %icc, BACKOFF_LABEL(2f, 1b) @@ -78,7 +144,12 @@ atomic_sub_ret: /* %o0 = decrement, %o1 atomic64_add: /* %o0 = increment, %o1 = atomic_ptr */ BACKOFF_SETUP(%o2) 1: ldx [%o1], %g1 - add %g1, %o0, %g7 + addcc %g1, %o0, %g7 + +#ifdef CONFIG_PAX_REFCOUNT + tvs %xcc, 6 +#endif + casx [%o1], %g1, %g7 cmp %g1, %g7 bne,pn %xcc, BACKOFF_LABEL(2f, 1b) @@ -88,12 +159,32 @@ atomic64_add: /* %o0 = increment, %o1 = 2: BACKOFF_SPIN(%o2, %o3, 1b) .size atomic64_add, .-atomic64_add + .globl atomic64_add_unchecked + .type atomic64_add_unchecked,#function +atomic64_add_unchecked: /* %o0 = increment, %o1 = atomic_ptr */ + BACKOFF_SETUP(%o2) +1: ldx [%o1], %g1 + addcc %g1, %o0, %g7 + casx [%o1], %g1, %g7 + cmp %g1, %g7 + bne,pn %xcc, 2f + nop + retl + nop +2: BACKOFF_SPIN(%o2, %o3, 1b) + .size atomic64_add_unchecked, .-atomic64_add_unchecked + .globl atomic64_sub .type atomic64_sub,#function atomic64_sub: /* %o0 = decrement, %o1 = atomic_ptr */ BACKOFF_SETUP(%o2) 1: ldx [%o1], %g1 - sub %g1, %o0, %g7 + subcc %g1, %o0, %g7 + +#ifdef CONFIG_PAX_REFCOUNT + tvs %xcc, 6 +#endif + casx [%o1], %g1, %g7 cmp %g1, %g7 bne,pn %xcc, BACKOFF_LABEL(2f, 1b) @@ -103,12 +194,32 @@ atomic64_sub: /* %o0 = decrement, %o1 = 2: BACKOFF_SPIN(%o2, %o3, 1b) .size atomic64_sub, .-atomic64_sub + .globl atomic64_sub_unchecked + .type atomic64_sub_unchecked,#function +atomic64_sub_unchecked: /* %o0 = decrement, %o1 = atomic_ptr */ + BACKOFF_SETUP(%o2) +1: ldx [%o1], %g1 + subcc %g1, %o0, %g7 + casx [%o1], %g1, %g7 + cmp %g1, %g7 + bne,pn %xcc, 2f + nop + retl + nop +2: BACKOFF_SPIN(%o2, %o3, 1b) + .size atomic64_sub_unchecked, .-atomic64_sub_unchecked + .globl atomic64_add_ret .type atomic64_add_ret,#function atomic64_add_ret: /* %o0 = increment, %o1 = atomic_ptr */ BACKOFF_SETUP(%o2) 1: ldx [%o1], %g1 - add %g1, %o0, %g7 + addcc %g1, %o0, %g7 + +#ifdef CONFIG_PAX_REFCOUNT + tvs %xcc, 6 +#endif + casx [%o1], %g1, %g7 cmp %g1, %g7 bne,pn %xcc, BACKOFF_LABEL(2f, 1b) @@ -118,12 +229,33 @@ atomic64_add_ret: /* %o0 = increment, %o 2: BACKOFF_SPIN(%o2, %o3, 1b) .size atomic64_add_ret, .-atomic64_add_ret + .globl atomic64_add_ret_unchecked + .type atomic64_add_ret_unchecked,#function +atomic64_add_ret_unchecked: /* %o0 = increment, %o1 = atomic_ptr */ + BACKOFF_SETUP(%o2) +1: ldx [%o1], %g1 + addcc %g1, %o0, %g7 + casx [%o1], %g1, %g7 + cmp %g1, %g7 + bne,pn %xcc, 2f + add %g7, %o0, %g7 + mov %g7, %o0 + retl + nop +2: BACKOFF_SPIN(%o2, %o3, 1b) + .size atomic64_add_ret_unchecked, .-atomic64_add_ret_unchecked + .globl atomic64_sub_ret .type atomic64_sub_ret,#function atomic64_sub_ret: /* %o0 = decrement, %o1 = atomic_ptr */ BACKOFF_SETUP(%o2) 1: ldx [%o1], %g1 - sub %g1, %o0, %g7 + subcc %g1, %o0, %g7 + +#ifdef CONFIG_PAX_REFCOUNT + tvs %xcc, 6 +#endif + casx [%o1], %g1, %g7 cmp %g1, %g7 bne,pn %xcc, BACKOFF_LABEL(2f, 1b) diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/sparc/lib/ksyms.c linux-2.6.36.4-pax/arch/sparc/lib/ksyms.c --- linux-2.6.36.4/arch/sparc/lib/ksyms.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/sparc/lib/ksyms.c 2010-10-27 22:58:07.000000000 +0200 @@ -142,12 +142,17 @@ EXPORT_SYMBOL(__downgrade_write); /* Atomic counter implementation. */ EXPORT_SYMBOL(atomic_add); +EXPORT_SYMBOL(atomic_add_unchecked); EXPORT_SYMBOL(atomic_add_ret); EXPORT_SYMBOL(atomic_sub); +EXPORT_SYMBOL(atomic_sub_unchecked); EXPORT_SYMBOL(atomic_sub_ret); EXPORT_SYMBOL(atomic64_add); +EXPORT_SYMBOL(atomic64_add_unchecked); EXPORT_SYMBOL(atomic64_add_ret); +EXPORT_SYMBOL(atomic64_add_ret_unchecked); EXPORT_SYMBOL(atomic64_sub); +EXPORT_SYMBOL(atomic64_sub_unchecked); EXPORT_SYMBOL(atomic64_sub_ret); /* Atomic bit operations. */ diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/sparc/mm/Makefile linux-2.6.36.4-pax/arch/sparc/mm/Makefile --- linux-2.6.36.4/arch/sparc/mm/Makefile 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/sparc/mm/Makefile 2010-10-27 22:58:07.000000000 +0200 @@ -2,7 +2,7 @@ # asflags-y := -ansi -ccflags-y := -Werror +#ccflags-y := -Werror obj-$(CONFIG_SPARC64) += ultra.o tlb.o tsb.o obj-y += fault_$(BITS).o diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/sparc/mm/fault_32.c linux-2.6.36.4-pax/arch/sparc/mm/fault_32.c --- linux-2.6.36.4/arch/sparc/mm/fault_32.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/sparc/mm/fault_32.c 2010-10-27 22:58:07.000000000 +0200 @@ -22,6 +22,9 @@ #include #include #include +#include +#include +#include #include #include @@ -209,6 +212,268 @@ static unsigned long compute_si_addr(str return safe_compute_effective_address(regs, insn); } +#ifdef CONFIG_PAX_PAGEEXEC +#ifdef CONFIG_PAX_DLRESOLVE +static void pax_emuplt_close(struct vm_area_struct *vma) +{ + vma->vm_mm->call_dl_resolve = 0UL; +} + +static int pax_emuplt_fault(struct vm_area_struct *vma, struct vm_fault *vmf) +{ + unsigned int *kaddr; + + vmf->page = alloc_page(GFP_HIGHUSER); + if (!vmf->page) + return VM_FAULT_OOM; + + kaddr = kmap(vmf->page); + memset(kaddr, 0, PAGE_SIZE); + kaddr[0] = 0x9DE3BFA8U; /* save */ + flush_dcache_page(vmf->page); + kunmap(vmf->page); + return VM_FAULT_MAJOR; +} + +static const struct vm_operations_struct pax_vm_ops = { + .close = pax_emuplt_close, + .fault = pax_emuplt_fault +}; + +static int pax_insert_vma(struct vm_area_struct *vma, unsigned long addr) +{ + int ret; + + INIT_LIST_HEAD(&vma->anon_vma_chain); + vma->vm_mm = current->mm; + vma->vm_start = addr; + vma->vm_end = addr + PAGE_SIZE; + vma->vm_flags = VM_READ | VM_EXEC | VM_MAYREAD | VM_MAYEXEC; + vma->vm_page_prot = vm_get_page_prot(vma->vm_flags); + vma->vm_ops = &pax_vm_ops; + + ret = insert_vm_struct(current->mm, vma); + if (ret) + return ret; + + ++current->mm->total_vm; + return 0; +} +#endif + +/* + * PaX: decide what to do with offenders (regs->pc = fault address) + * + * returns 1 when task should be killed + * 2 when patched PLT trampoline was detected + * 3 when unpatched PLT trampoline was detected + */ +static int pax_handle_fetch_fault(struct pt_regs *regs) +{ + +#ifdef CONFIG_PAX_EMUPLT + int err; + + do { /* PaX: patched PLT emulation #1 */ + unsigned int sethi1, sethi2, jmpl; + + err = get_user(sethi1, (unsigned int *)regs->pc); + err |= get_user(sethi2, (unsigned int *)(regs->pc+4)); + err |= get_user(jmpl, (unsigned int *)(regs->pc+8)); + + if (err) + break; + + if ((sethi1 & 0xFFC00000U) == 0x03000000U && + (sethi2 & 0xFFC00000U) == 0x03000000U && + (jmpl & 0xFFFFE000U) == 0x81C06000U) + { + unsigned int addr; + + regs->u_regs[UREG_G1] = (sethi2 & 0x003FFFFFU) << 10; + addr = regs->u_regs[UREG_G1]; + addr += (((jmpl | 0xFFFFE000U) ^ 0x00001000U) + 0x00001000U); + regs->pc = addr; + regs->npc = addr+4; + return 2; + } + } while (0); + + { /* PaX: patched PLT emulation #2 */ + unsigned int ba; + + err = get_user(ba, (unsigned int *)regs->pc); + + if (!err && (ba & 0xFFC00000U) == 0x30800000U) { + unsigned int addr; + + addr = regs->pc + ((((ba | 0xFFC00000U) ^ 0x00200000U) + 0x00200000U) << 2); + regs->pc = addr; + regs->npc = addr+4; + return 2; + } + } + + do { /* PaX: patched PLT emulation #3 */ + unsigned int sethi, jmpl, nop; + + err = get_user(sethi, (unsigned int *)regs->pc); + err |= get_user(jmpl, (unsigned int *)(regs->pc+4)); + err |= get_user(nop, (unsigned int *)(regs->pc+8)); + + if (err) + break; + + if ((sethi & 0xFFC00000U) == 0x03000000U && + (jmpl & 0xFFFFE000U) == 0x81C06000U && + nop == 0x01000000U) + { + unsigned int addr; + + addr = (sethi & 0x003FFFFFU) << 10; + regs->u_regs[UREG_G1] = addr; + addr += (((jmpl | 0xFFFFE000U) ^ 0x00001000U) + 0x00001000U); + regs->pc = addr; + regs->npc = addr+4; + return 2; + } + } while (0); + + do { /* PaX: unpatched PLT emulation step 1 */ + unsigned int sethi, ba, nop; + + err = get_user(sethi, (unsigned int *)regs->pc); + err |= get_user(ba, (unsigned int *)(regs->pc+4)); + err |= get_user(nop, (unsigned int *)(regs->pc+8)); + + if (err) + break; + + if ((sethi & 0xFFC00000U) == 0x03000000U && + ((ba & 0xFFC00000U) == 0x30800000U || (ba & 0xFFF80000U) == 0x30680000U) && + nop == 0x01000000U) + { + unsigned int addr, save, call; + + if ((ba & 0xFFC00000U) == 0x30800000U) + addr = regs->pc + 4 + ((((ba | 0xFFC00000U) ^ 0x00200000U) + 0x00200000U) << 2); + else + addr = regs->pc + 4 + ((((ba | 0xFFF80000U) ^ 0x00040000U) + 0x00040000U) << 2); + + err = get_user(save, (unsigned int *)addr); + err |= get_user(call, (unsigned int *)(addr+4)); + err |= get_user(nop, (unsigned int *)(addr+8)); + if (err) + break; + +#ifdef CONFIG_PAX_DLRESOLVE + if (save == 0x9DE3BFA8U && + (call & 0xC0000000U) == 0x40000000U && + nop == 0x01000000U) + { + struct vm_area_struct *vma; + unsigned long call_dl_resolve; + + down_read(¤t->mm->mmap_sem); + call_dl_resolve = current->mm->call_dl_resolve; + up_read(¤t->mm->mmap_sem); + if (likely(call_dl_resolve)) + goto emulate; + + vma = kmem_cache_zalloc(vm_area_cachep, GFP_KERNEL); + + down_write(¤t->mm->mmap_sem); + if (current->mm->call_dl_resolve) { + call_dl_resolve = current->mm->call_dl_resolve; + up_write(¤t->mm->mmap_sem); + if (vma) + kmem_cache_free(vm_area_cachep, vma); + goto emulate; + } + + call_dl_resolve = get_unmapped_area(NULL, 0UL, PAGE_SIZE, 0UL, MAP_PRIVATE); + if (!vma || (call_dl_resolve & ~PAGE_MASK)) { + up_write(¤t->mm->mmap_sem); + if (vma) + kmem_cache_free(vm_area_cachep, vma); + return 1; + } + + if (pax_insert_vma(vma, call_dl_resolve)) { + up_write(¤t->mm->mmap_sem); + kmem_cache_free(vm_area_cachep, vma); + return 1; + } + + current->mm->call_dl_resolve = call_dl_resolve; + up_write(¤t->mm->mmap_sem); + +emulate: + regs->u_regs[UREG_G1] = (sethi & 0x003FFFFFU) << 10; + regs->pc = call_dl_resolve; + regs->npc = addr+4; + return 3; + } +#endif + + /* PaX: glibc 2.4+ generates sethi/jmpl instead of save/call */ + if ((save & 0xFFC00000U) == 0x05000000U && + (call & 0xFFFFE000U) == 0x85C0A000U && + nop == 0x01000000U) + { + regs->u_regs[UREG_G1] = (sethi & 0x003FFFFFU) << 10; + regs->u_regs[UREG_G2] = addr + 4; + addr = (save & 0x003FFFFFU) << 10; + addr += (((call | 0xFFFFE000U) ^ 0x00001000U) + 0x00001000U); + regs->pc = addr; + regs->npc = addr+4; + return 3; + } + } + } while (0); + + do { /* PaX: unpatched PLT emulation step 2 */ + unsigned int save, call, nop; + + err = get_user(save, (unsigned int *)(regs->pc-4)); + err |= get_user(call, (unsigned int *)regs->pc); + err |= get_user(nop, (unsigned int *)(regs->pc+4)); + if (err) + break; + + if (save == 0x9DE3BFA8U && + (call & 0xC0000000U) == 0x40000000U && + nop == 0x01000000U) + { + unsigned int dl_resolve = regs->pc + ((((call | 0xC0000000U) ^ 0x20000000U) + 0x20000000U) << 2); + + regs->u_regs[UREG_RETPC] = regs->pc; + regs->pc = dl_resolve; + regs->npc = dl_resolve+4; + return 3; + } + } while (0); +#endif + + return 1; +} + +void pax_report_insns(void *pc, void *sp) +{ + unsigned long i; + + printk(KERN_ERR "PAX: bytes at PC: "); + for (i = 0; i < 8; i++) { + unsigned int c; + if (get_user(c, (unsigned int *)pc+i)) + printk(KERN_CONT "???????? "); + else + printk(KERN_CONT "%08x ", c); + } + printk("\n"); +} +#endif + static noinline void do_fault_siginfo(int code, int sig, struct pt_regs *regs, int text_fault) { @@ -282,6 +547,24 @@ good_area: if(!(vma->vm_flags & VM_WRITE)) goto bad_area; } else { + +#ifdef CONFIG_PAX_PAGEEXEC + if ((mm->pax_flags & MF_PAX_PAGEEXEC) && text_fault && !(vma->vm_flags & VM_EXEC)) { + up_read(&mm->mmap_sem); + switch (pax_handle_fetch_fault(regs)) { + +#ifdef CONFIG_PAX_EMUPLT + case 2: + case 3: + return; +#endif + + } + pax_report_fault(regs, (void *)regs->pc, (void *)regs->u_regs[UREG_FP]); + do_group_exit(SIGKILL); + } +#endif + /* Allow reads even for write-only mappings */ if(!(vma->vm_flags & (VM_READ | VM_EXEC))) goto bad_area; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/sparc/mm/fault_64.c linux-2.6.36.4-pax/arch/sparc/mm/fault_64.c --- linux-2.6.36.4/arch/sparc/mm/fault_64.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/sparc/mm/fault_64.c 2010-10-27 22:58:07.000000000 +0200 @@ -21,6 +21,9 @@ #include #include #include +#include +#include +#include #include #include @@ -272,6 +275,457 @@ static void noinline __kprobes bogus_32b show_regs(regs); } +#ifdef CONFIG_PAX_PAGEEXEC +#ifdef CONFIG_PAX_DLRESOLVE +static void pax_emuplt_close(struct vm_area_struct *vma) +{ + vma->vm_mm->call_dl_resolve = 0UL; +} + +static int pax_emuplt_fault(struct vm_area_struct *vma, struct vm_fault *vmf) +{ + unsigned int *kaddr; + + vmf->page = alloc_page(GFP_HIGHUSER); + if (!vmf->page) + return VM_FAULT_OOM; + + kaddr = kmap(vmf->page); + memset(kaddr, 0, PAGE_SIZE); + kaddr[0] = 0x9DE3BFA8U; /* save */ + flush_dcache_page(vmf->page); + kunmap(vmf->page); + return VM_FAULT_MAJOR; +} + +static const struct vm_operations_struct pax_vm_ops = { + .close = pax_emuplt_close, + .fault = pax_emuplt_fault +}; + +static int pax_insert_vma(struct vm_area_struct *vma, unsigned long addr) +{ + int ret; + + INIT_LIST_HEAD(&vma->anon_vma_chain); + vma->vm_mm = current->mm; + vma->vm_start = addr; + vma->vm_end = addr + PAGE_SIZE; + vma->vm_flags = VM_READ | VM_EXEC | VM_MAYREAD | VM_MAYEXEC; + vma->vm_page_prot = vm_get_page_prot(vma->vm_flags); + vma->vm_ops = &pax_vm_ops; + + ret = insert_vm_struct(current->mm, vma); + if (ret) + return ret; + + ++current->mm->total_vm; + return 0; +} +#endif + +/* + * PaX: decide what to do with offenders (regs->tpc = fault address) + * + * returns 1 when task should be killed + * 2 when patched PLT trampoline was detected + * 3 when unpatched PLT trampoline was detected + */ +static int pax_handle_fetch_fault(struct pt_regs *regs) +{ + +#ifdef CONFIG_PAX_EMUPLT + int err; + + do { /* PaX: patched PLT emulation #1 */ + unsigned int sethi1, sethi2, jmpl; + + err = get_user(sethi1, (unsigned int *)regs->tpc); + err |= get_user(sethi2, (unsigned int *)(regs->tpc+4)); + err |= get_user(jmpl, (unsigned int *)(regs->tpc+8)); + + if (err) + break; + + if ((sethi1 & 0xFFC00000U) == 0x03000000U && + (sethi2 & 0xFFC00000U) == 0x03000000U && + (jmpl & 0xFFFFE000U) == 0x81C06000U) + { + unsigned long addr; + + regs->u_regs[UREG_G1] = (sethi2 & 0x003FFFFFU) << 10; + addr = regs->u_regs[UREG_G1]; + addr += (((jmpl | 0xFFFFFFFFFFFFE000UL) ^ 0x00001000UL) + 0x00001000UL); + + if (test_thread_flag(TIF_32BIT)) + addr &= 0xFFFFFFFFUL; + + regs->tpc = addr; + regs->tnpc = addr+4; + return 2; + } + } while (0); + + { /* PaX: patched PLT emulation #2 */ + unsigned int ba; + + err = get_user(ba, (unsigned int *)regs->tpc); + + if (!err && (ba & 0xFFC00000U) == 0x30800000U) { + unsigned long addr; + + addr = regs->tpc + ((((ba | 0xFFFFFFFFFFC00000UL) ^ 0x00200000UL) + 0x00200000UL) << 2); + + if (test_thread_flag(TIF_32BIT)) + addr &= 0xFFFFFFFFUL; + + regs->tpc = addr; + regs->tnpc = addr+4; + return 2; + } + } + + do { /* PaX: patched PLT emulation #3 */ + unsigned int sethi, jmpl, nop; + + err = get_user(sethi, (unsigned int *)regs->tpc); + err |= get_user(jmpl, (unsigned int *)(regs->tpc+4)); + err |= get_user(nop, (unsigned int *)(regs->tpc+8)); + + if (err) + break; + + if ((sethi & 0xFFC00000U) == 0x03000000U && + (jmpl & 0xFFFFE000U) == 0x81C06000U && + nop == 0x01000000U) + { + unsigned long addr; + + addr = (sethi & 0x003FFFFFU) << 10; + regs->u_regs[UREG_G1] = addr; + addr += (((jmpl | 0xFFFFFFFFFFFFE000UL) ^ 0x00001000UL) + 0x00001000UL); + + if (test_thread_flag(TIF_32BIT)) + addr &= 0xFFFFFFFFUL; + + regs->tpc = addr; + regs->tnpc = addr+4; + return 2; + } + } while (0); + + do { /* PaX: patched PLT emulation #4 */ + unsigned int sethi, mov1, call, mov2; + + err = get_user(sethi, (unsigned int *)regs->tpc); + err |= get_user(mov1, (unsigned int *)(regs->tpc+4)); + err |= get_user(call, (unsigned int *)(regs->tpc+8)); + err |= get_user(mov2, (unsigned int *)(regs->tpc+12)); + + if (err) + break; + + if ((sethi & 0xFFC00000U) == 0x03000000U && + mov1 == 0x8210000FU && + (call & 0xC0000000U) == 0x40000000U && + mov2 == 0x9E100001U) + { + unsigned long addr; + + regs->u_regs[UREG_G1] = regs->u_regs[UREG_RETPC]; + addr = regs->tpc + 4 + ((((call | 0xFFFFFFFFC0000000UL) ^ 0x20000000UL) + 0x20000000UL) << 2); + + if (test_thread_flag(TIF_32BIT)) + addr &= 0xFFFFFFFFUL; + + regs->tpc = addr; + regs->tnpc = addr+4; + return 2; + } + } while (0); + + do { /* PaX: patched PLT emulation #5 */ + unsigned int sethi, sethi1, sethi2, or1, or2, sllx, jmpl, nop; + + err = get_user(sethi, (unsigned int *)regs->tpc); + err |= get_user(sethi1, (unsigned int *)(regs->tpc+4)); + err |= get_user(sethi2, (unsigned int *)(regs->tpc+8)); + err |= get_user(or1, (unsigned int *)(regs->tpc+12)); + err |= get_user(or2, (unsigned int *)(regs->tpc+16)); + err |= get_user(sllx, (unsigned int *)(regs->tpc+20)); + err |= get_user(jmpl, (unsigned int *)(regs->tpc+24)); + err |= get_user(nop, (unsigned int *)(regs->tpc+28)); + + if (err) + break; + + if ((sethi & 0xFFC00000U) == 0x03000000U && + (sethi1 & 0xFFC00000U) == 0x03000000U && + (sethi2 & 0xFFC00000U) == 0x0B000000U && + (or1 & 0xFFFFE000U) == 0x82106000U && + (or2 & 0xFFFFE000U) == 0x8A116000U && + sllx == 0x83287020U && + jmpl == 0x81C04005U && + nop == 0x01000000U) + { + unsigned long addr; + + regs->u_regs[UREG_G1] = ((sethi1 & 0x003FFFFFU) << 10) | (or1 & 0x000003FFU); + regs->u_regs[UREG_G1] <<= 32; + regs->u_regs[UREG_G5] = ((sethi2 & 0x003FFFFFU) << 10) | (or2 & 0x000003FFU); + addr = regs->u_regs[UREG_G1] + regs->u_regs[UREG_G5]; + regs->tpc = addr; + regs->tnpc = addr+4; + return 2; + } + } while (0); + + do { /* PaX: patched PLT emulation #6 */ + unsigned int sethi, sethi1, sethi2, sllx, or, jmpl, nop; + + err = get_user(sethi, (unsigned int *)regs->tpc); + err |= get_user(sethi1, (unsigned int *)(regs->tpc+4)); + err |= get_user(sethi2, (unsigned int *)(regs->tpc+8)); + err |= get_user(sllx, (unsigned int *)(regs->tpc+12)); + err |= get_user(or, (unsigned int *)(regs->tpc+16)); + err |= get_user(jmpl, (unsigned int *)(regs->tpc+20)); + err |= get_user(nop, (unsigned int *)(regs->tpc+24)); + + if (err) + break; + + if ((sethi & 0xFFC00000U) == 0x03000000U && + (sethi1 & 0xFFC00000U) == 0x03000000U && + (sethi2 & 0xFFC00000U) == 0x0B000000U && + sllx == 0x83287020U && + (or & 0xFFFFE000U) == 0x8A116000U && + jmpl == 0x81C04005U && + nop == 0x01000000U) + { + unsigned long addr; + + regs->u_regs[UREG_G1] = (sethi1 & 0x003FFFFFU) << 10; + regs->u_regs[UREG_G1] <<= 32; + regs->u_regs[UREG_G5] = ((sethi2 & 0x003FFFFFU) << 10) | (or & 0x3FFU); + addr = regs->u_regs[UREG_G1] + regs->u_regs[UREG_G5]; + regs->tpc = addr; + regs->tnpc = addr+4; + return 2; + } + } while (0); + + do { /* PaX: unpatched PLT emulation step 1 */ + unsigned int sethi, ba, nop; + + err = get_user(sethi, (unsigned int *)regs->tpc); + err |= get_user(ba, (unsigned int *)(regs->tpc+4)); + err |= get_user(nop, (unsigned int *)(regs->tpc+8)); + + if (err) + break; + + if ((sethi & 0xFFC00000U) == 0x03000000U && + ((ba & 0xFFC00000U) == 0x30800000U || (ba & 0xFFF80000U) == 0x30680000U) && + nop == 0x01000000U) + { + unsigned long addr; + unsigned int save, call; + unsigned int sethi1, sethi2, or1, or2, sllx, add, jmpl; + + if ((ba & 0xFFC00000U) == 0x30800000U) + addr = regs->tpc + 4 + ((((ba | 0xFFFFFFFFFFC00000UL) ^ 0x00200000UL) + 0x00200000UL) << 2); + else + addr = regs->tpc + 4 + ((((ba | 0xFFFFFFFFFFF80000UL) ^ 0x00040000UL) + 0x00040000UL) << 2); + + if (test_thread_flag(TIF_32BIT)) + addr &= 0xFFFFFFFFUL; + + err = get_user(save, (unsigned int *)addr); + err |= get_user(call, (unsigned int *)(addr+4)); + err |= get_user(nop, (unsigned int *)(addr+8)); + if (err) + break; + +#ifdef CONFIG_PAX_DLRESOLVE + if (save == 0x9DE3BFA8U && + (call & 0xC0000000U) == 0x40000000U && + nop == 0x01000000U) + { + struct vm_area_struct *vma; + unsigned long call_dl_resolve; + + down_read(¤t->mm->mmap_sem); + call_dl_resolve = current->mm->call_dl_resolve; + up_read(¤t->mm->mmap_sem); + if (likely(call_dl_resolve)) + goto emulate; + + vma = kmem_cache_zalloc(vm_area_cachep, GFP_KERNEL); + + down_write(¤t->mm->mmap_sem); + if (current->mm->call_dl_resolve) { + call_dl_resolve = current->mm->call_dl_resolve; + up_write(¤t->mm->mmap_sem); + if (vma) + kmem_cache_free(vm_area_cachep, vma); + goto emulate; + } + + call_dl_resolve = get_unmapped_area(NULL, 0UL, PAGE_SIZE, 0UL, MAP_PRIVATE); + if (!vma || (call_dl_resolve & ~PAGE_MASK)) { + up_write(¤t->mm->mmap_sem); + if (vma) + kmem_cache_free(vm_area_cachep, vma); + return 1; + } + + if (pax_insert_vma(vma, call_dl_resolve)) { + up_write(¤t->mm->mmap_sem); + kmem_cache_free(vm_area_cachep, vma); + return 1; + } + + current->mm->call_dl_resolve = call_dl_resolve; + up_write(¤t->mm->mmap_sem); + +emulate: + regs->u_regs[UREG_G1] = (sethi & 0x003FFFFFU) << 10; + regs->tpc = call_dl_resolve; + regs->tnpc = addr+4; + return 3; + } +#endif + + /* PaX: glibc 2.4+ generates sethi/jmpl instead of save/call */ + if ((save & 0xFFC00000U) == 0x05000000U && + (call & 0xFFFFE000U) == 0x85C0A000U && + nop == 0x01000000U) + { + regs->u_regs[UREG_G1] = (sethi & 0x003FFFFFU) << 10; + regs->u_regs[UREG_G2] = addr + 4; + addr = (save & 0x003FFFFFU) << 10; + addr += (((call | 0xFFFFFFFFFFFFE000UL) ^ 0x00001000UL) + 0x00001000UL); + + if (test_thread_flag(TIF_32BIT)) + addr &= 0xFFFFFFFFUL; + + regs->tpc = addr; + regs->tnpc = addr+4; + return 3; + } + + /* PaX: 64-bit PLT stub */ + err = get_user(sethi1, (unsigned int *)addr); + err |= get_user(sethi2, (unsigned int *)(addr+4)); + err |= get_user(or1, (unsigned int *)(addr+8)); + err |= get_user(or2, (unsigned int *)(addr+12)); + err |= get_user(sllx, (unsigned int *)(addr+16)); + err |= get_user(add, (unsigned int *)(addr+20)); + err |= get_user(jmpl, (unsigned int *)(addr+24)); + err |= get_user(nop, (unsigned int *)(addr+28)); + if (err) + break; + + if ((sethi1 & 0xFFC00000U) == 0x09000000U && + (sethi2 & 0xFFC00000U) == 0x0B000000U && + (or1 & 0xFFFFE000U) == 0x88112000U && + (or2 & 0xFFFFE000U) == 0x8A116000U && + sllx == 0x89293020U && + add == 0x8A010005U && + jmpl == 0x89C14000U && + nop == 0x01000000U) + { + regs->u_regs[UREG_G1] = (sethi & 0x003FFFFFU) << 10; + regs->u_regs[UREG_G4] = ((sethi1 & 0x003FFFFFU) << 10) | (or1 & 0x000003FFU); + regs->u_regs[UREG_G4] <<= 32; + regs->u_regs[UREG_G5] = ((sethi2 & 0x003FFFFFU) << 10) | (or2 & 0x000003FFU); + regs->u_regs[UREG_G5] += regs->u_regs[UREG_G4]; + regs->u_regs[UREG_G4] = addr + 24; + addr = regs->u_regs[UREG_G5]; + regs->tpc = addr; + regs->tnpc = addr+4; + return 3; + } + } + } while (0); + +#ifdef CONFIG_PAX_DLRESOLVE + do { /* PaX: unpatched PLT emulation step 2 */ + unsigned int save, call, nop; + + err = get_user(save, (unsigned int *)(regs->tpc-4)); + err |= get_user(call, (unsigned int *)regs->tpc); + err |= get_user(nop, (unsigned int *)(regs->tpc+4)); + if (err) + break; + + if (save == 0x9DE3BFA8U && + (call & 0xC0000000U) == 0x40000000U && + nop == 0x01000000U) + { + unsigned long dl_resolve = regs->tpc + ((((call | 0xFFFFFFFFC0000000UL) ^ 0x20000000UL) + 0x20000000UL) << 2); + + if (test_thread_flag(TIF_32BIT)) + dl_resolve &= 0xFFFFFFFFUL; + + regs->u_regs[UREG_RETPC] = regs->tpc; + regs->tpc = dl_resolve; + regs->tnpc = dl_resolve+4; + return 3; + } + } while (0); +#endif + + do { /* PaX: patched PLT emulation #7, must be AFTER the unpatched PLT emulation */ + unsigned int sethi, ba, nop; + + err = get_user(sethi, (unsigned int *)regs->tpc); + err |= get_user(ba, (unsigned int *)(regs->tpc+4)); + err |= get_user(nop, (unsigned int *)(regs->tpc+8)); + + if (err) + break; + + if ((sethi & 0xFFC00000U) == 0x03000000U && + (ba & 0xFFF00000U) == 0x30600000U && + nop == 0x01000000U) + { + unsigned long addr; + + addr = (sethi & 0x003FFFFFU) << 10; + regs->u_regs[UREG_G1] = addr; + addr = regs->tpc + ((((ba | 0xFFFFFFFFFFF80000UL) ^ 0x00040000UL) + 0x00040000UL) << 2); + + if (test_thread_flag(TIF_32BIT)) + addr &= 0xFFFFFFFFUL; + + regs->tpc = addr; + regs->tnpc = addr+4; + return 2; + } + } while (0); + +#endif + + return 1; +} + +void pax_report_insns(void *pc, void *sp) +{ + unsigned long i; + + printk(KERN_ERR "PAX: bytes at PC: "); + for (i = 0; i < 8; i++) { + unsigned int c; + if (get_user(c, (unsigned int *)pc+i)) + printk(KERN_CONT "???????? "); + else + printk(KERN_CONT "%08x ", c); + } + printk("\n"); +} +#endif + asmlinkage void __kprobes do_sparc64_fault(struct pt_regs *regs) { struct mm_struct *mm = current->mm; @@ -340,6 +794,29 @@ asmlinkage void __kprobes do_sparc64_fau if (!vma) goto bad_area; +#ifdef CONFIG_PAX_PAGEEXEC + /* PaX: detect ITLB misses on non-exec pages */ + if ((mm->pax_flags & MF_PAX_PAGEEXEC) && vma->vm_start <= address && + !(vma->vm_flags & VM_EXEC) && (fault_code & FAULT_CODE_ITLB)) + { + if (address != regs->tpc) + goto good_area; + + up_read(&mm->mmap_sem); + switch (pax_handle_fetch_fault(regs)) { + +#ifdef CONFIG_PAX_EMUPLT + case 2: + case 3: + return; +#endif + + } + pax_report_fault(regs, (void *)regs->tpc, (void *)(regs->u_regs[UREG_FP] + STACK_BIAS)); + do_group_exit(SIGKILL); + } +#endif + /* Pure DTLB misses do not tell us whether the fault causing * load/store/atomic was a write or not, it only says that there * was no match. So in such a case we (carefully) read the diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/sparc/mm/hugetlbpage.c linux-2.6.36.4-pax/arch/sparc/mm/hugetlbpage.c --- linux-2.6.36.4/arch/sparc/mm/hugetlbpage.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/sparc/mm/hugetlbpage.c 2010-10-27 22:58:07.000000000 +0200 @@ -68,7 +68,7 @@ full_search: } return -ENOMEM; } - if (likely(!vma || addr + len <= vma->vm_start)) { + if (likely(check_heap_stack_gap(vma, addr, len))) { /* * Remember the place where we stopped the search: */ @@ -107,7 +107,7 @@ hugetlb_get_unmapped_area_topdown(struct /* make sure it can fit in the remaining address space */ if (likely(addr > len)) { vma = find_vma(mm, addr-len); - if (!vma || addr <= vma->vm_start) { + if (check_heap_stack_gap(vma, addr - len, len)) { /* remember the address as a hint for next time */ return (mm->free_area_cache = addr-len); } @@ -125,7 +125,7 @@ hugetlb_get_unmapped_area_topdown(struct * return with success: */ vma = find_vma(mm, addr); - if (likely(!vma || addr+len <= vma->vm_start)) { + if (likely(check_heap_stack_gap(vma, addr, len))) { /* remember the address as a hint for next time */ return (mm->free_area_cache = addr); } @@ -182,8 +182,7 @@ hugetlb_get_unmapped_area(struct file *f if (addr) { addr = ALIGN(addr, HPAGE_SIZE); vma = find_vma(mm, addr); - if (task_size - len >= addr && - (!vma || addr + len <= vma->vm_start)) + if (task_size - len >= addr && check_heap_stack_gap(vma, addr, len)) return addr; } if (mm->get_unmapped_area == arch_get_unmapped_area) diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/sparc/mm/init_32.c linux-2.6.36.4-pax/arch/sparc/mm/init_32.c --- linux-2.6.36.4/arch/sparc/mm/init_32.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/sparc/mm/init_32.c 2010-10-27 22:58:07.000000000 +0200 @@ -318,6 +318,9 @@ extern void device_scan(void); pgprot_t PAGE_SHARED __read_mostly; EXPORT_SYMBOL(PAGE_SHARED); +pgprot_t PAGE_SHARED_NOEXEC __read_mostly; +EXPORT_SYMBOL(PAGE_SHARED_NOEXEC); + void __init paging_init(void) { switch(sparc_cpu_model) { @@ -346,17 +349,17 @@ void __init paging_init(void) /* Initialize the protection map with non-constant, MMU dependent values. */ protection_map[0] = PAGE_NONE; - protection_map[1] = PAGE_READONLY; - protection_map[2] = PAGE_COPY; - protection_map[3] = PAGE_COPY; + protection_map[1] = PAGE_READONLY_NOEXEC; + protection_map[2] = PAGE_COPY_NOEXEC; + protection_map[3] = PAGE_COPY_NOEXEC; protection_map[4] = PAGE_READONLY; protection_map[5] = PAGE_READONLY; protection_map[6] = PAGE_COPY; protection_map[7] = PAGE_COPY; protection_map[8] = PAGE_NONE; - protection_map[9] = PAGE_READONLY; - protection_map[10] = PAGE_SHARED; - protection_map[11] = PAGE_SHARED; + protection_map[9] = PAGE_READONLY_NOEXEC; + protection_map[10] = PAGE_SHARED_NOEXEC; + protection_map[11] = PAGE_SHARED_NOEXEC; protection_map[12] = PAGE_READONLY; protection_map[13] = PAGE_READONLY; protection_map[14] = PAGE_SHARED; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/sparc/mm/srmmu.c linux-2.6.36.4-pax/arch/sparc/mm/srmmu.c --- linux-2.6.36.4/arch/sparc/mm/srmmu.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/sparc/mm/srmmu.c 2010-10-27 22:58:07.000000000 +0200 @@ -2198,6 +2198,13 @@ void __init ld_mmu_srmmu(void) PAGE_SHARED = pgprot_val(SRMMU_PAGE_SHARED); BTFIXUPSET_INT(page_copy, pgprot_val(SRMMU_PAGE_COPY)); BTFIXUPSET_INT(page_readonly, pgprot_val(SRMMU_PAGE_RDONLY)); + +#ifdef CONFIG_PAX_PAGEEXEC + PAGE_SHARED_NOEXEC = pgprot_val(SRMMU_PAGE_SHARED_NOEXEC); + BTFIXUPSET_INT(page_copy_noexec, pgprot_val(SRMMU_PAGE_COPY_NOEXEC)); + BTFIXUPSET_INT(page_readonly_noexec, pgprot_val(SRMMU_PAGE_RDONLY_NOEXEC)); +#endif + BTFIXUPSET_INT(page_kernel, pgprot_val(SRMMU_PAGE_KERNEL)); page_kernel = pgprot_val(SRMMU_PAGE_KERNEL); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/um/include/asm/kmap_types.h linux-2.6.36.4-pax/arch/um/include/asm/kmap_types.h --- linux-2.6.36.4/arch/um/include/asm/kmap_types.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/um/include/asm/kmap_types.h 2010-10-27 22:58:07.000000000 +0200 @@ -23,6 +23,7 @@ enum km_type { KM_IRQ1, KM_SOFTIRQ0, KM_SOFTIRQ1, + KM_CLEARPAGE, KM_TYPE_NR }; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/um/include/asm/page.h linux-2.6.36.4-pax/arch/um/include/asm/page.h --- linux-2.6.36.4/arch/um/include/asm/page.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/um/include/asm/page.h 2010-10-27 22:58:07.000000000 +0200 @@ -14,6 +14,9 @@ #define PAGE_SIZE (_AC(1, UL) << PAGE_SHIFT) #define PAGE_MASK (~(PAGE_SIZE-1)) +#define ktla_ktva(addr) (addr) +#define ktva_ktla(addr) (addr) + #ifndef __ASSEMBLY__ struct page; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/um/kernel/process.c linux-2.6.36.4-pax/arch/um/kernel/process.c --- linux-2.6.36.4/arch/um/kernel/process.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/um/kernel/process.c 2010-12-14 21:18:01.000000000 +0100 @@ -404,22 +404,6 @@ int singlestepping(void * t) return 2; } -/* - * Only x86 and x86_64 have an arch_align_stack(). - * All other arches have "#define arch_align_stack(x) (x)" - * in their asm/system.h - * As this is included in UML from asm-um/system-generic.h, - * we can use it to behave as the subarch does. - */ -#ifndef arch_align_stack -unsigned long arch_align_stack(unsigned long sp) -{ - if (!(current->personality & ADDR_NO_RANDOMIZE) && randomize_va_space) - sp -= get_random_int() % 8192; - return sp & ~0xf; -} -#endif - unsigned long get_wchan(struct task_struct *p) { unsigned long stack_page, sp, ip; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/um/sys-i386/syscalls.c linux-2.6.36.4-pax/arch/um/sys-i386/syscalls.c --- linux-2.6.36.4/arch/um/sys-i386/syscalls.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/um/sys-i386/syscalls.c 2010-10-27 22:58:07.000000000 +0200 @@ -11,6 +11,21 @@ #include "asm/uaccess.h" #include "asm/unistd.h" +int i386_mmap_check(unsigned long addr, unsigned long len, unsigned long flags) +{ + unsigned long pax_task_size = TASK_SIZE; + +#ifdef CONFIG_PAX_SEGMEXEC + if (current->mm->pax_flags & MF_PAX_SEGMEXEC) + pax_task_size = SEGMEXEC_TASK_SIZE; +#endif + + if (len > pax_task_size || addr > pax_task_size - len) + return -EINVAL; + + return 0; +} + /* * The prototype on i386 is: * diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/Kconfig linux-2.6.36.4-pax/arch/x86/Kconfig --- linux-2.6.36.4/arch/x86/Kconfig 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/Kconfig 2010-12-16 00:22:30.000000000 +0100 @@ -236,7 +236,7 @@ config X86_TRAMPOLINE config X86_32_LAZY_GS def_bool y - depends on X86_32 && !CC_STACKPROTECTOR + depends on X86_32 && !CC_STACKPROTECTOR && !PAX_MEMORY_UDEREF config ARCH_HWEIGHT_CFLAGS string @@ -1127,7 +1127,7 @@ config PAGE_OFFSET hex default 0xB0000000 if VMSPLIT_3G_OPT default 0x80000000 if VMSPLIT_2G - default 0x78000000 if VMSPLIT_2G_OPT + default 0x70000000 if VMSPLIT_2G_OPT default 0x40000000 if VMSPLIT_1G default 0xC0000000 depends on X86_32 @@ -1489,6 +1489,7 @@ config SECCOMP config CC_STACKPROTECTOR bool "Enable -fstack-protector buffer overflow detection (EXPERIMENTAL)" + depends on X86_64 || !PAX_MEMORY_UDEREF ---help--- This option turns on the -fstack-protector GCC feature. This feature puts, at the beginning of functions, a canary value on @@ -1546,6 +1547,7 @@ config KEXEC_JUMP config PHYSICAL_START hex "Physical address where the kernel is loaded" if (EMBEDDED || CRASH_DUMP) default "0x1000000" + range 0x400000 0x40000000 ---help--- This gives the physical address where the kernel is loaded. @@ -1609,6 +1611,7 @@ config X86_NEED_RELOCS config PHYSICAL_ALIGN hex "Alignment value to which kernel should be aligned" if X86_32 default "0x1000000" + range 0x400000 0x1000000 if PAX_KERNEXEC range 0x2000 0x1000000 ---help--- This value puts the alignment restrictions on physical address @@ -1640,7 +1643,7 @@ config HOTPLUG_CPU Say N if you want to disable CPU hotplug. config COMPAT_VDSO - def_bool y + def_bool n prompt "Compat VDSO support" depends on X86_32 || IA32_EMULATION ---help--- diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/Kconfig.cpu linux-2.6.36.4-pax/arch/x86/Kconfig.cpu --- linux-2.6.36.4/arch/x86/Kconfig.cpu 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/Kconfig.cpu 2010-10-27 22:58:07.000000000 +0200 @@ -336,7 +336,7 @@ config X86_PPRO_FENCE config X86_F00F_BUG def_bool y - depends on M586MMX || M586TSC || M586 || M486 || M386 + depends on (M586MMX || M586TSC || M586 || M486 || M386) && !PAX_KERNEXEC config X86_INVD_BUG def_bool y @@ -360,7 +360,7 @@ config X86_POPAD_OK config X86_ALIGNMENT_16 def_bool y - depends on MWINCHIP3D || MWINCHIPC6 || MCYRIXIII || X86_ELAN || MK6 || M586MMX || M586TSC || M586 || M486 || MVIAC3_2 || MGEODEGX1 + depends on MWINCHIP3D || MWINCHIPC6 || MCYRIXIII || X86_ELAN || MK8 || MK7 || MK6 || MCORE2 || MPENTIUM4 || MPENTIUMIII || MPENTIUMII || M686 || M586MMX || M586TSC || M586 || M486 || MVIAC3_2 || MGEODEGX1 config X86_INTEL_USERCOPY def_bool y @@ -406,7 +406,7 @@ config X86_CMPXCHG64 # generates cmov. config X86_CMOV def_bool y - depends on (MK8 || MK7 || MCORE2 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MVIAC3_2 || MVIAC7 || MCRUSOE || MEFFICEON || X86_64 || MATOM || MGEODE_LX) + depends on (MK8 || MK7 || MCORE2 || MPSC || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MVIAC3_2 || MVIAC7 || MCRUSOE || MEFFICEON || X86_64 || MATOM || MGEODE_LX) config X86_MINIMUM_CPU_FAMILY int diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/Kconfig.debug linux-2.6.36.4-pax/arch/x86/Kconfig.debug --- linux-2.6.36.4/arch/x86/Kconfig.debug 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/Kconfig.debug 2010-10-27 22:58:07.000000000 +0200 @@ -97,7 +97,7 @@ config X86_PTDUMP config DEBUG_RODATA bool "Write protect kernel read-only data structures" default y - depends on DEBUG_KERNEL + depends on DEBUG_KERNEL && BROKEN ---help--- Mark the kernel read-only data as write-protected in the pagetables, in order to catch accidental (and incorrect) writes to such const diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/Makefile linux-2.6.36.4-pax/arch/x86/Makefile --- linux-2.6.36.4/arch/x86/Makefile 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/Makefile 2010-10-27 22:58:07.000000000 +0200 @@ -191,3 +191,12 @@ define archhelp echo ' FDARGS="..." arguments for the booted kernel' echo ' FDINITRD=file initrd for the booted kernel' endef + +define OLD_LD + +*** ${VERSION}.${PATCHLEVEL} PaX kernels no longer build correctly with old versions of binutils. +*** Please upgrade your binutils to 2.18 or newer +endef + +archprepare: + $(if $(LDFLAGS_BUILD_ID),,$(error $(OLD_LD))) diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/boot/bitops.h linux-2.6.36.4-pax/arch/x86/boot/bitops.h --- linux-2.6.36.4/arch/x86/boot/bitops.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/boot/bitops.h 2010-10-27 22:58:07.000000000 +0200 @@ -26,7 +26,7 @@ static inline int variable_test_bit(int u8 v; const u32 *p = (const u32 *)addr; - asm("btl %2,%1; setc %0" : "=qm" (v) : "m" (*p), "Ir" (nr)); + asm volatile("btl %2,%1; setc %0" : "=qm" (v) : "m" (*p), "Ir" (nr)); return v; } @@ -37,7 +37,7 @@ static inline int variable_test_bit(int static inline void set_bit(int nr, void *addr) { - asm("btsl %1,%0" : "+m" (*(u32 *)addr) : "Ir" (nr)); + asm volatile("btsl %1,%0" : "+m" (*(u32 *)addr) : "Ir" (nr)); } #endif /* BOOT_BITOPS_H */ diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/boot/boot.h linux-2.6.36.4-pax/arch/x86/boot/boot.h --- linux-2.6.36.4/arch/x86/boot/boot.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/boot/boot.h 2010-10-27 22:58:07.000000000 +0200 @@ -85,7 +85,7 @@ static inline void io_delay(void) static inline u16 ds(void) { u16 seg; - asm("movw %%ds,%0" : "=rm" (seg)); + asm volatile("movw %%ds,%0" : "=rm" (seg)); return seg; } @@ -181,7 +181,7 @@ static inline void wrgs32(u32 v, addr_t static inline int memcmp(const void *s1, const void *s2, size_t len) { u8 diff; - asm("repe; cmpsb; setnz %0" + asm volatile("repe; cmpsb; setnz %0" : "=qm" (diff), "+D" (s1), "+S" (s2), "+c" (len)); return diff; } diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/boot/compressed/head_32.S linux-2.6.36.4-pax/arch/x86/boot/compressed/head_32.S --- linux-2.6.36.4/arch/x86/boot/compressed/head_32.S 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/boot/compressed/head_32.S 2010-10-27 22:58:07.000000000 +0200 @@ -76,7 +76,7 @@ ENTRY(startup_32) notl %eax andl %eax, %ebx #else - movl $LOAD_PHYSICAL_ADDR, %ebx + movl $____LOAD_PHYSICAL_ADDR, %ebx #endif /* Target address to relocate to for decompression */ @@ -162,7 +162,7 @@ relocated: * and where it was actually loaded. */ movl %ebp, %ebx - subl $LOAD_PHYSICAL_ADDR, %ebx + subl $____LOAD_PHYSICAL_ADDR, %ebx jz 2f /* Nothing to be done if loaded at compiled addr. */ /* * Process relocations. @@ -170,8 +170,7 @@ relocated: 1: subl $4, %edi movl (%edi), %ecx - testl %ecx, %ecx - jz 2f + jecxz 2f addl %ebx, -__PAGE_OFFSET(%ebx, %ecx) jmp 1b 2: diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/boot/compressed/head_64.S linux-2.6.36.4-pax/arch/x86/boot/compressed/head_64.S --- linux-2.6.36.4/arch/x86/boot/compressed/head_64.S 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/boot/compressed/head_64.S 2010-10-27 22:58:07.000000000 +0200 @@ -91,7 +91,7 @@ ENTRY(startup_32) notl %eax andl %eax, %ebx #else - movl $LOAD_PHYSICAL_ADDR, %ebx + movl $____LOAD_PHYSICAL_ADDR, %ebx #endif /* Target address to relocate to for decompression */ @@ -233,7 +233,7 @@ ENTRY(startup_64) notq %rax andq %rax, %rbp #else - movq $LOAD_PHYSICAL_ADDR, %rbp + movq $____LOAD_PHYSICAL_ADDR, %rbp #endif /* Target address to relocate to for decompression */ diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/boot/compressed/misc.c linux-2.6.36.4-pax/arch/x86/boot/compressed/misc.c --- linux-2.6.36.4/arch/x86/boot/compressed/misc.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/boot/compressed/misc.c 2010-10-27 22:58:07.000000000 +0200 @@ -289,7 +289,7 @@ static void parse_elf(void *output) case PT_LOAD: #ifdef CONFIG_RELOCATABLE dest = output; - dest += (phdr->p_paddr - LOAD_PHYSICAL_ADDR); + dest += (phdr->p_paddr - ____LOAD_PHYSICAL_ADDR); #else dest = (void *)(phdr->p_paddr); #endif @@ -342,7 +342,7 @@ asmlinkage void decompress_kernel(void * error("Destination address too large"); #endif #ifndef CONFIG_RELOCATABLE - if ((unsigned long)output != LOAD_PHYSICAL_ADDR) + if ((unsigned long)output != ____LOAD_PHYSICAL_ADDR) error("Wrong destination address"); #endif diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/boot/compressed/mkpiggy.c linux-2.6.36.4-pax/arch/x86/boot/compressed/mkpiggy.c --- linux-2.6.36.4/arch/x86/boot/compressed/mkpiggy.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/boot/compressed/mkpiggy.c 2010-10-27 22:58:07.000000000 +0200 @@ -74,7 +74,7 @@ int main(int argc, char *argv[]) offs = (olen > ilen) ? olen - ilen : 0; offs += olen >> 12; /* Add 8 bytes for each 32K block */ - offs += 32*1024 + 18; /* Add 32K + 18 bytes slack */ + offs += 64*1024; /* Add 64K bytes slack */ offs = (offs+4095) & ~4095; /* Round to a 4K boundary */ printf(".section \".rodata..compressed\",\"a\",@progbits\n"); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/boot/compressed/relocs.c linux-2.6.36.4-pax/arch/x86/boot/compressed/relocs.c --- linux-2.6.36.4/arch/x86/boot/compressed/relocs.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/boot/compressed/relocs.c 2010-10-27 22:58:07.000000000 +0200 @@ -13,8 +13,11 @@ static void die(char *fmt, ...); +#include "../../../../include/generated/autoconf.h" + #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0])) static Elf32_Ehdr ehdr; +static Elf32_Phdr *phdr; static unsigned long reloc_count, reloc_idx; static unsigned long *relocs; @@ -270,9 +273,39 @@ static void read_ehdr(FILE *fp) } } +static void read_phdrs(FILE *fp) +{ + unsigned int i; + + phdr = calloc(ehdr.e_phnum, sizeof(Elf32_Phdr)); + if (!phdr) { + die("Unable to allocate %d program headers\n", + ehdr.e_phnum); + } + if (fseek(fp, ehdr.e_phoff, SEEK_SET) < 0) { + die("Seek to %d failed: %s\n", + ehdr.e_phoff, strerror(errno)); + } + if (fread(phdr, sizeof(*phdr), ehdr.e_phnum, fp) != ehdr.e_phnum) { + die("Cannot read ELF program headers: %s\n", + strerror(errno)); + } + for(i = 0; i < ehdr.e_phnum; i++) { + phdr[i].p_type = elf32_to_cpu(phdr[i].p_type); + phdr[i].p_offset = elf32_to_cpu(phdr[i].p_offset); + phdr[i].p_vaddr = elf32_to_cpu(phdr[i].p_vaddr); + phdr[i].p_paddr = elf32_to_cpu(phdr[i].p_paddr); + phdr[i].p_filesz = elf32_to_cpu(phdr[i].p_filesz); + phdr[i].p_memsz = elf32_to_cpu(phdr[i].p_memsz); + phdr[i].p_flags = elf32_to_cpu(phdr[i].p_flags); + phdr[i].p_align = elf32_to_cpu(phdr[i].p_align); + } + +} + static void read_shdrs(FILE *fp) { - int i; + unsigned int i; Elf32_Shdr shdr; secs = calloc(ehdr.e_shnum, sizeof(struct section)); @@ -307,7 +340,7 @@ static void read_shdrs(FILE *fp) static void read_strtabs(FILE *fp) { - int i; + unsigned int i; for (i = 0; i < ehdr.e_shnum; i++) { struct section *sec = &secs[i]; if (sec->shdr.sh_type != SHT_STRTAB) { @@ -332,7 +365,7 @@ static void read_strtabs(FILE *fp) static void read_symtabs(FILE *fp) { - int i,j; + unsigned int i,j; for (i = 0; i < ehdr.e_shnum; i++) { struct section *sec = &secs[i]; if (sec->shdr.sh_type != SHT_SYMTAB) { @@ -365,7 +398,9 @@ static void read_symtabs(FILE *fp) static void read_relocs(FILE *fp) { - int i,j; + unsigned int i,j; + uint32_t base; + for (i = 0; i < ehdr.e_shnum; i++) { struct section *sec = &secs[i]; if (sec->shdr.sh_type != SHT_REL) { @@ -385,9 +420,18 @@ static void read_relocs(FILE *fp) die("Cannot read symbol table: %s\n", strerror(errno)); } + base = 0; + for (j = 0; j < ehdr.e_phnum; j++) { + if (phdr[j].p_type != PT_LOAD ) + continue; + if (secs[sec->shdr.sh_info].shdr.sh_offset < phdr[j].p_offset || secs[sec->shdr.sh_info].shdr.sh_offset >= phdr[j].p_offset + phdr[j].p_filesz) + continue; + base = CONFIG_PAGE_OFFSET + phdr[j].p_paddr - phdr[j].p_vaddr; + break; + } for (j = 0; j < sec->shdr.sh_size/sizeof(Elf32_Rel); j++) { Elf32_Rel *rel = &sec->reltab[j]; - rel->r_offset = elf32_to_cpu(rel->r_offset); + rel->r_offset = elf32_to_cpu(rel->r_offset) + base; rel->r_info = elf32_to_cpu(rel->r_info); } } @@ -396,14 +440,14 @@ static void read_relocs(FILE *fp) static void print_absolute_symbols(void) { - int i; + unsigned int i; printf("Absolute symbols\n"); printf(" Num: Value Size Type Bind Visibility Name\n"); for (i = 0; i < ehdr.e_shnum; i++) { struct section *sec = &secs[i]; char *sym_strtab; Elf32_Sym *sh_symtab; - int j; + unsigned int j; if (sec->shdr.sh_type != SHT_SYMTAB) { continue; @@ -431,14 +475,14 @@ static void print_absolute_symbols(void) static void print_absolute_relocs(void) { - int i, printed = 0; + unsigned int i, printed = 0; for (i = 0; i < ehdr.e_shnum; i++) { struct section *sec = &secs[i]; struct section *sec_applies, *sec_symtab; char *sym_strtab; Elf32_Sym *sh_symtab; - int j; + unsigned int j; if (sec->shdr.sh_type != SHT_REL) { continue; } @@ -499,13 +543,13 @@ static void print_absolute_relocs(void) static void walk_relocs(void (*visit)(Elf32_Rel *rel, Elf32_Sym *sym)) { - int i; + unsigned int i; /* Walk through the relocations */ for (i = 0; i < ehdr.e_shnum; i++) { char *sym_strtab; Elf32_Sym *sh_symtab; struct section *sec_applies, *sec_symtab; - int j; + unsigned int j; struct section *sec = &secs[i]; if (sec->shdr.sh_type != SHT_REL) { @@ -530,6 +574,22 @@ static void walk_relocs(void (*visit)(El !is_rel_reloc(sym_name(sym_strtab, sym))) { continue; } + /* Don't relocate actual per-cpu variables, they are absolute indices, not addresses */ + if (!strcmp(sec_name(sym->st_shndx), ".data..percpu") && strcmp(sym_name(sym_strtab, sym), "__per_cpu_load")) + continue; + +#if defined(CONFIG_PAX_KERNEXEC) && defined(CONFIG_X86_32) + /* Don't relocate actual code, they are relocated implicitly by the base address of KERNEL_CS */ + if (!strcmp(sec_name(sym->st_shndx), ".module.text") && !strcmp(sym_name(sym_strtab, sym), "_etext")) + continue; + if (!strcmp(sec_name(sym->st_shndx), ".init.text")) + continue; + if (!strcmp(sec_name(sym->st_shndx), ".exit.text")) + continue; + if (!strcmp(sec_name(sym->st_shndx), ".text") && strcmp(sym_name(sym_strtab, sym), "__LOAD_PHYSICAL_ADDR")) + continue; +#endif + switch (r_type) { case R_386_NONE: case R_386_PC32: @@ -571,7 +631,7 @@ static int cmp_relocs(const void *va, co static void emit_relocs(int as_text) { - int i; + unsigned int i; /* Count how many relocations I have and allocate space for them. */ reloc_count = 0; walk_relocs(count_reloc); @@ -665,6 +725,7 @@ int main(int argc, char **argv) fname, strerror(errno)); } read_ehdr(fp); + read_phdrs(fp); read_shdrs(fp); read_strtabs(fp); read_symtabs(fp); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/boot/cpucheck.c linux-2.6.36.4-pax/arch/x86/boot/cpucheck.c --- linux-2.6.36.4/arch/x86/boot/cpucheck.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/boot/cpucheck.c 2010-10-27 22:58:07.000000000 +0200 @@ -74,7 +74,7 @@ static int has_fpu(void) u16 fcw = -1, fsw = -1; u32 cr0; - asm("movl %%cr0,%0" : "=r" (cr0)); + asm volatile("movl %%cr0,%0" : "=r" (cr0)); if (cr0 & (X86_CR0_EM|X86_CR0_TS)) { cr0 &= ~(X86_CR0_EM|X86_CR0_TS); asm volatile("movl %0,%%cr0" : : "r" (cr0)); @@ -90,7 +90,7 @@ static int has_eflag(u32 mask) { u32 f0, f1; - asm("pushfl ; " + asm volatile("pushfl ; " "pushfl ; " "popl %0 ; " "movl %0,%1 ; " @@ -115,7 +115,7 @@ static void get_flags(void) set_bit(X86_FEATURE_FPU, cpu.flags); if (has_eflag(X86_EFLAGS_ID)) { - asm("cpuid" + asm volatile("cpuid" : "=a" (max_intel_level), "=b" (cpu_vendor[0]), "=d" (cpu_vendor[1]), @@ -124,7 +124,7 @@ static void get_flags(void) if (max_intel_level >= 0x00000001 && max_intel_level <= 0x0000ffff) { - asm("cpuid" + asm volatile("cpuid" : "=a" (tfms), "=c" (cpu.flags[4]), "=d" (cpu.flags[0]) @@ -136,7 +136,7 @@ static void get_flags(void) cpu.model += ((tfms >> 16) & 0xf) << 4; } - asm("cpuid" + asm volatile("cpuid" : "=a" (max_amd_level) : "a" (0x80000000) : "ebx", "ecx", "edx"); @@ -144,7 +144,7 @@ static void get_flags(void) if (max_amd_level >= 0x80000001 && max_amd_level <= 0x8000ffff) { u32 eax = 0x80000001; - asm("cpuid" + asm volatile("cpuid" : "+a" (eax), "=c" (cpu.flags[6]), "=d" (cpu.flags[1]) @@ -203,9 +203,9 @@ int check_cpu(int *cpu_level_ptr, int *r u32 ecx = MSR_K7_HWCR; u32 eax, edx; - asm("rdmsr" : "=a" (eax), "=d" (edx) : "c" (ecx)); + asm volatile("rdmsr" : "=a" (eax), "=d" (edx) : "c" (ecx)); eax &= ~(1 << 15); - asm("wrmsr" : : "a" (eax), "d" (edx), "c" (ecx)); + asm volatile("wrmsr" : : "a" (eax), "d" (edx), "c" (ecx)); get_flags(); /* Make sure it really did something */ err = check_flags(); @@ -218,9 +218,9 @@ int check_cpu(int *cpu_level_ptr, int *r u32 ecx = MSR_VIA_FCR; u32 eax, edx; - asm("rdmsr" : "=a" (eax), "=d" (edx) : "c" (ecx)); + asm volatile("rdmsr" : "=a" (eax), "=d" (edx) : "c" (ecx)); eax |= (1<<1)|(1<<7); - asm("wrmsr" : : "a" (eax), "d" (edx), "c" (ecx)); + asm volatile("wrmsr" : : "a" (eax), "d" (edx), "c" (ecx)); set_bit(X86_FEATURE_CX8, cpu.flags); err = check_flags(); @@ -231,12 +231,12 @@ int check_cpu(int *cpu_level_ptr, int *r u32 eax, edx; u32 level = 1; - asm("rdmsr" : "=a" (eax), "=d" (edx) : "c" (ecx)); - asm("wrmsr" : : "a" (~0), "d" (edx), "c" (ecx)); - asm("cpuid" + asm volatile("rdmsr" : "=a" (eax), "=d" (edx) : "c" (ecx)); + asm volatile("wrmsr" : : "a" (~0), "d" (edx), "c" (ecx)); + asm volatile("cpuid" : "+a" (level), "=d" (cpu.flags[0]) : : "ecx", "ebx"); - asm("wrmsr" : : "a" (eax), "d" (edx), "c" (ecx)); + asm volatile("wrmsr" : : "a" (eax), "d" (edx), "c" (ecx)); err = check_flags(); } diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/boot/header.S linux-2.6.36.4-pax/arch/x86/boot/header.S --- linux-2.6.36.4/arch/x86/boot/header.S 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/boot/header.S 2010-10-27 22:58:07.000000000 +0200 @@ -224,7 +224,7 @@ setup_data: .quad 0 # 64-bit physical # single linked list of # struct setup_data -pref_address: .quad LOAD_PHYSICAL_ADDR # preferred load addr +pref_address: .quad ____LOAD_PHYSICAL_ADDR # preferred load addr #define ZO_INIT_SIZE (ZO__end - ZO_startup_32 + ZO_z_extract_offset) #define VO_INIT_SIZE (VO__end - VO__text) diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/boot/memory.c linux-2.6.36.4-pax/arch/x86/boot/memory.c --- linux-2.6.36.4/arch/x86/boot/memory.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/boot/memory.c 2010-10-27 22:58:07.000000000 +0200 @@ -19,7 +19,7 @@ static int detect_memory_e820(void) { - int count = 0; + unsigned int count = 0; struct biosregs ireg, oreg; struct e820entry *desc = boot_params.e820_map; static struct e820entry buf; /* static so it is zeroed */ diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/boot/video-vesa.c linux-2.6.36.4-pax/arch/x86/boot/video-vesa.c --- linux-2.6.36.4/arch/x86/boot/video-vesa.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/boot/video-vesa.c 2010-10-27 22:58:07.000000000 +0200 @@ -200,6 +200,7 @@ static void vesa_store_pm_info(void) boot_params.screen_info.vesapm_seg = oreg.es; boot_params.screen_info.vesapm_off = oreg.di; + boot_params.screen_info.vesapm_size = oreg.cx; } /* diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/boot/video.c linux-2.6.36.4-pax/arch/x86/boot/video.c --- linux-2.6.36.4/arch/x86/boot/video.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/boot/video.c 2010-10-27 22:58:07.000000000 +0200 @@ -96,7 +96,7 @@ static void store_mode_params(void) static unsigned int get_entry(void) { char entry_buf[4]; - int i, len = 0; + unsigned int i, len = 0; int key; unsigned int v; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/ia32/ia32_signal.c linux-2.6.36.4-pax/arch/x86/ia32/ia32_signal.c --- linux-2.6.36.4/arch/x86/ia32/ia32_signal.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/ia32/ia32_signal.c 2010-12-14 21:18:01.000000000 +0100 @@ -403,7 +403,7 @@ static void __user *get_sigframe(struct sp -= frame_size; /* Align the stack pointer according to the i386 ABI, * i.e. so that on function entry ((sp + 4) & 15) == 0. */ - sp = ((sp + 4) & -16ul) - 4; + sp = ((sp - 12) & -16ul) - 4; return (void __user *) sp; } @@ -461,7 +461,7 @@ int ia32_setup_frame(int sig, struct k_s * These are actually not used anymore, but left because some * gdb versions depend on them as a marker. */ - put_user_ex(*((u64 *)&code), (u64 *)frame->retcode); + put_user_ex(*((const u64 *)&code), (u64 *)frame->retcode); } put_user_catch(err); if (err) @@ -503,7 +503,7 @@ int ia32_setup_rt_frame(int sig, struct 0xb8, __NR_ia32_rt_sigreturn, 0x80cd, - 0, + 0 }; frame = get_sigframe(ka, regs, sizeof(*frame), &fpstate); @@ -533,16 +533,18 @@ int ia32_setup_rt_frame(int sig, struct if (ka->sa.sa_flags & SA_RESTORER) restorer = ka->sa.sa_restorer; + else if (current->mm->context.vdso) + /* Return stub is in 32bit vsyscall page */ + restorer = VDSO32_SYMBOL(current->mm->context.vdso, rt_sigreturn); else - restorer = VDSO32_SYMBOL(current->mm->context.vdso, - rt_sigreturn); + restorer = &frame->retcode; put_user_ex(ptr_to_compat(restorer), &frame->pretcode); /* * Not actually used anymore, but left because some gdb * versions need it. */ - put_user_ex(*((u64 *)&code), (u64 *)frame->retcode); + put_user_ex(*((const u64 *)&code), (u64 *)frame->retcode); } put_user_catch(err); if (err) diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/ia32/ia32entry.S linux-2.6.36.4-pax/arch/x86/ia32/ia32entry.S --- linux-2.6.36.4/arch/x86/ia32/ia32entry.S 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/ia32/ia32entry.S 2011-02-24 15:43:20.000000000 +0100 @@ -13,6 +13,7 @@ #include #include #include +#include #include /* Avoid __ASSEMBLER__'ifying just for this. */ @@ -93,6 +94,18 @@ ENTRY(native_irq_enable_sysexit) ENDPROC(native_irq_enable_sysexit) #endif + .macro pax_enter_kernel_user +#ifdef CONFIG_PAX_MEMORY_UDEREF + call pax_enter_kernel_user +#endif + .endm + + .macro pax_exit_kernel_user +#ifdef CONFIG_PAX_MEMORY_UDEREF + call pax_exit_kernel_user +#endif + .endm + /* * 32bit SYSENTER instruction entry. * @@ -120,6 +133,7 @@ ENTRY(ia32_sysenter_target) SWAPGS_UNSAFE_STACK movq PER_CPU_VAR(kernel_stack), %rsp addq $(KERNEL_STACK_OFFSET),%rsp + pax_enter_kernel_user /* * No need to follow this irqs on/off section: the syscall * disabled irqs, here we enable it straight after entry: @@ -150,6 +164,12 @@ ENTRY(ia32_sysenter_target) SAVE_ARGS 0,0,1 /* no need to do an access_ok check here because rbp has been 32bit zero extended */ + +#ifdef CONFIG_PAX_MEMORY_UDEREF + mov $PAX_USER_SHADOW_BASE,%r10 + add %r10,%rbp +#endif + 1: movl (%rbp),%ebp .section __ex_table,"a" .quad 1b,ia32_badarg @@ -172,6 +192,7 @@ sysenter_dispatch: testl $_TIF_ALLWORK_MASK,TI_flags(%r10) jnz sysexit_audit sysexit_from_sys_call: + pax_exit_kernel_user andl $~TS_COMPAT,TI_status(%r10) /* clear IF, that popfq doesn't enable interrupts early */ andl $~0x200,EFLAGS-R11(%rsp) @@ -290,6 +311,11 @@ ENTRY(ia32_cstar_target) movl %esp,%r8d CFI_REGISTER rsp,r8 movq PER_CPU_VAR(kernel_stack),%rsp + +#ifdef CONFIG_PAX_MEMORY_UDEREF + pax_enter_kernel_user +#endif + /* * No need to follow this irqs on/off section: the syscall * disabled irqs and here we enable it straight after entry: @@ -311,6 +337,12 @@ ENTRY(ia32_cstar_target) /* no need to do an access_ok check here because r8 has been 32bit zero extended */ /* hardware stack frame is complete now */ + +#ifdef CONFIG_PAX_MEMORY_UDEREF + mov $PAX_USER_SHADOW_BASE,%r10 + add %r10,%r8 +#endif + 1: movl (%r8),%r9d .section __ex_table,"a" .quad 1b,ia32_badarg @@ -333,6 +365,7 @@ cstar_dispatch: testl $_TIF_ALLWORK_MASK,TI_flags(%r10) jnz sysretl_audit sysretl_from_sys_call: + pax_exit_kernel_user andl $~TS_COMPAT,TI_status(%r10) RESTORE_ARGS 1,-ARG_SKIP,1,1,1 movl RIP-ARGOFFSET(%rsp),%ecx @@ -415,6 +448,7 @@ ENTRY(ia32_syscall) CFI_REL_OFFSET rip,RIP-RIP PARAVIRT_ADJUST_EXCEPTION_FRAME SWAPGS + pax_enter_kernel_user /* * No need to follow this irqs on/off section: the syscall * disabled irqs and here we enable it straight after entry: diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/include/asm/alternative.h linux-2.6.36.4-pax/arch/x86/include/asm/alternative.h --- linux-2.6.36.4/arch/x86/include/asm/alternative.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/include/asm/alternative.h 2010-10-27 22:58:07.000000000 +0200 @@ -92,7 +92,7 @@ static inline int alternatives_text_rese ".section .discard,\"aw\",@progbits\n" \ " .byte 0xff + (664f-663f) - (662b-661b)\n" /* rlen <= slen */ \ ".previous\n" \ - ".section .altinstr_replacement, \"ax\"\n" \ + ".section .altinstr_replacement, \"a\"\n" \ "663:\n\t" newinstr "\n664:\n" /* replacement */ \ ".previous" diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/include/asm/apm.h linux-2.6.36.4-pax/arch/x86/include/asm/apm.h --- linux-2.6.36.4/arch/x86/include/asm/apm.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/include/asm/apm.h 2010-10-27 22:58:07.000000000 +0200 @@ -34,7 +34,7 @@ static inline void apm_bios_call_asm(u32 __asm__ __volatile__(APM_DO_ZERO_SEGS "pushl %%edi\n\t" "pushl %%ebp\n\t" - "lcall *%%cs:apm_bios_entry\n\t" + "lcall *%%ss:apm_bios_entry\n\t" "setc %%al\n\t" "popl %%ebp\n\t" "popl %%edi\n\t" @@ -58,7 +58,7 @@ static inline u8 apm_bios_call_simple_as __asm__ __volatile__(APM_DO_ZERO_SEGS "pushl %%edi\n\t" "pushl %%ebp\n\t" - "lcall *%%cs:apm_bios_entry\n\t" + "lcall *%%ss:apm_bios_entry\n\t" "setc %%bl\n\t" "popl %%ebp\n\t" "popl %%edi\n\t" diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/include/asm/atomic.h linux-2.6.36.4-pax/arch/x86/include/asm/atomic.h --- linux-2.6.36.4/arch/x86/include/asm/atomic.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/include/asm/atomic.h 2011-02-24 15:43:20.000000000 +0100 @@ -22,7 +22,18 @@ */ static inline int atomic_read(const atomic_t *v) { - return (*(volatile int *)&(v)->counter); + return (*(volatile const int *)&(v)->counter); +} + +/** + * atomic_read_unchecked - read atomic variable + * @v: pointer of type atomic_unchecked_t + * + * Atomically reads the value of @v. + */ +static inline int atomic_read_unchecked(const atomic_unchecked_t *v) +{ + return (*(volatile const int *)&(v)->counter); } /** @@ -38,6 +49,18 @@ static inline void atomic_set(atomic_t * } /** + * atomic_set_unchecked - set atomic variable + * @v: pointer of type atomic_unchecked_t + * @i: required value + * + * Atomically sets the value of @v to @i. + */ +static inline void atomic_set_unchecked(atomic_unchecked_t *v, int i) +{ + v->counter = i; +} + +/** * atomic_add - add integer to atomic variable * @i: integer value to add * @v: pointer of type atomic_t @@ -46,7 +69,29 @@ static inline void atomic_set(atomic_t * */ static inline void atomic_add(int i, atomic_t *v) { - asm volatile(LOCK_PREFIX "addl %1,%0" + asm volatile(LOCK_PREFIX "addl %1,%0\n" + +#ifdef CONFIG_PAX_REFCOUNT + "jno 0f\n" + LOCK_PREFIX "subl %1,%0\n" + "int $4\n0:\n" + _ASM_EXTABLE(0b, 0b) +#endif + + : "+m" (v->counter) + : "ir" (i)); +} + +/** + * atomic_add_unchecked - add integer to atomic variable + * @i: integer value to add + * @v: pointer of type atomic_unchecked_t + * + * Atomically adds @i to @v. + */ +static inline void atomic_add_unchecked(int i, atomic_unchecked_t *v) +{ + asm volatile(LOCK_PREFIX "addl %1,%0\n" : "+m" (v->counter) : "ir" (i)); } @@ -60,7 +105,29 @@ static inline void atomic_add(int i, ato */ static inline void atomic_sub(int i, atomic_t *v) { - asm volatile(LOCK_PREFIX "subl %1,%0" + asm volatile(LOCK_PREFIX "subl %1,%0\n" + +#ifdef CONFIG_PAX_REFCOUNT + "jno 0f\n" + LOCK_PREFIX "addl %1,%0\n" + "int $4\n0:\n" + _ASM_EXTABLE(0b, 0b) +#endif + + : "+m" (v->counter) + : "ir" (i)); +} + +/** + * atomic_sub_unchecked - subtract integer from atomic variable + * @i: integer value to subtract + * @v: pointer of type atomic_t + * + * Atomically subtracts @i from @v. + */ +static inline void atomic_sub_unchecked(int i, atomic_unchecked_t *v) +{ + asm volatile(LOCK_PREFIX "subl %1,%0\n" : "+m" (v->counter) : "ir" (i)); } @@ -78,7 +145,16 @@ static inline int atomic_sub_and_test(in { unsigned char c; - asm volatile(LOCK_PREFIX "subl %2,%0; sete %1" + asm volatile(LOCK_PREFIX "subl %2,%0\n" + +#ifdef CONFIG_PAX_REFCOUNT + "jno 0f\n" + LOCK_PREFIX "addl %2,%0\n" + "int $4\n0:\n" + _ASM_EXTABLE(0b, 0b) +#endif + + "sete %1\n" : "+m" (v->counter), "=qm" (c) : "ir" (i) : "memory"); return c; @@ -92,7 +168,27 @@ static inline int atomic_sub_and_test(in */ static inline void atomic_inc(atomic_t *v) { - asm volatile(LOCK_PREFIX "incl %0" + asm volatile(LOCK_PREFIX "incl %0\n" + +#ifdef CONFIG_PAX_REFCOUNT + "jno 0f\n" + LOCK_PREFIX "decl %0\n" + "int $4\n0:\n" + _ASM_EXTABLE(0b, 0b) +#endif + + : "+m" (v->counter)); +} + +/** + * atomic_inc_unchecked - increment atomic variable + * @v: pointer of type atomic_unchecked_t + * + * Atomically increments @v by 1. + */ +static inline void atomic_inc_unchecked(atomic_unchecked_t *v) +{ + asm volatile(LOCK_PREFIX "incl %0\n" : "+m" (v->counter)); } @@ -104,7 +200,27 @@ static inline void atomic_inc(atomic_t * */ static inline void atomic_dec(atomic_t *v) { - asm volatile(LOCK_PREFIX "decl %0" + asm volatile(LOCK_PREFIX "decl %0\n" + +#ifdef CONFIG_PAX_REFCOUNT + "jno 0f\n" + LOCK_PREFIX "incl %0\n" + "int $4\n0:\n" + _ASM_EXTABLE(0b, 0b) +#endif + + : "+m" (v->counter)); +} + +/** + * atomic_dec_unchecked - decrement atomic variable + * @v: pointer of type atomic_t + * + * Atomically decrements @v by 1. + */ +static inline void atomic_dec_unchecked(atomic_unchecked_t *v) +{ + asm volatile(LOCK_PREFIX "decl %0\n" : "+m" (v->counter)); } @@ -120,7 +236,16 @@ static inline int atomic_dec_and_test(at { unsigned char c; - asm volatile(LOCK_PREFIX "decl %0; sete %1" + asm volatile(LOCK_PREFIX "decl %0\n" + +#ifdef CONFIG_PAX_REFCOUNT + "jno 0f\n" + LOCK_PREFIX "incl %0\n" + "int $4\n0:\n" + _ASM_EXTABLE(0b, 0b) +#endif + + "sete %1\n" : "+m" (v->counter), "=qm" (c) : : "memory"); return c != 0; @@ -138,7 +263,16 @@ static inline int atomic_inc_and_test(at { unsigned char c; - asm volatile(LOCK_PREFIX "incl %0; sete %1" + asm volatile(LOCK_PREFIX "incl %0\n" + +#ifdef CONFIG_PAX_REFCOUNT + "jno 0f\n" + LOCK_PREFIX "decl %0\n" + "int $4\n0:\n" + _ASM_EXTABLE(0b, 0b) +#endif + + "sete %1\n" : "+m" (v->counter), "=qm" (c) : : "memory"); return c != 0; @@ -157,7 +291,16 @@ static inline int atomic_add_negative(in { unsigned char c; - asm volatile(LOCK_PREFIX "addl %2,%0; sets %1" + asm volatile(LOCK_PREFIX "addl %2,%0\n" + +#ifdef CONFIG_PAX_REFCOUNT + "jno 0f\n" + LOCK_PREFIX "subl %2,%0\n" + "int $4\n0:\n" + _ASM_EXTABLE(0b, 0b) +#endif + + "sets %1\n" : "+m" (v->counter), "=qm" (c) : "ir" (i) : "memory"); return c; @@ -180,6 +323,46 @@ static inline int atomic_add_return(int #endif /* Modern 486+ processor */ __i = i; + asm volatile(LOCK_PREFIX "xaddl %0, %1\n" + +#ifdef CONFIG_PAX_REFCOUNT + "jno 0f\n" + "movl %0, %1\n" + "int $4\n0:\n" + _ASM_EXTABLE(0b, 0b) +#endif + + : "+r" (i), "+m" (v->counter) + : : "memory"); + return i + __i; + +#ifdef CONFIG_M386 +no_xadd: /* Legacy 386 processor */ + local_irq_save(flags); + __i = atomic_read(v); + atomic_set(v, i + __i); + local_irq_restore(flags); + return i + __i; +#endif +} + +/** + * atomic_add_return_unchecked - add integer and return + * @v: pointer of type atomic_unchecked_t + * @i: integer value to add + * + * Atomically adds @i to @v and returns @i + @v + */ +static inline int atomic_add_return_unchecked(int i, atomic_unchecked_t *v) +{ + int __i; +#ifdef CONFIG_M386 + unsigned long flags; + if (unlikely(boot_cpu_data.x86 <= 3)) + goto no_xadd; +#endif + /* Modern 486+ processor */ + __i = i; asm volatile(LOCK_PREFIX "xaddl %0, %1" : "+r" (i), "+m" (v->counter) : : "memory"); @@ -208,6 +391,10 @@ static inline int atomic_sub_return(int } #define atomic_inc_return(v) (atomic_add_return(1, v)) +static inline int atomic_inc_return_unchecked(atomic_unchecked_t *v) +{ + return atomic_add_return_unchecked(1, v); +} #define atomic_dec_return(v) (atomic_sub_return(1, v)) static inline int atomic_cmpxchg(atomic_t *v, int old, int new) @@ -231,21 +418,77 @@ static inline int atomic_xchg(atomic_t * */ static inline int atomic_add_unless(atomic_t *v, int a, int u) { - int c, old; + int c, old, new; c = atomic_read(v); for (;;) { - if (unlikely(c == (u))) + if (unlikely(c == u)) break; - old = atomic_cmpxchg((v), c, c + (a)); + + asm volatile("addl %2,%0\n" + +#ifdef CONFIG_PAX_REFCOUNT + "jno 0f\n" + "subl %2,%0\n" + "int $4\n0:\n" + _ASM_EXTABLE(0b, 0b) +#endif + + : "=r" (new) + : "0" (c), "ir" (a)); + + old = atomic_cmpxchg(v, c, new); if (likely(old == c)) break; c = old; } - return c != (u); + return c != u; } #define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0) +/** + * atomic_inc_not_zero_hint - increment if not null + * @v: pointer of type atomic_t + * @hint: probable value of the atomic before the increment + * + * This version of atomic_inc_not_zero() gives a hint of probable + * value of the atomic. This helps processor to not read the memory + * before doing the atomic read/modify/write cycle, lowering + * number of bus transactions on some arches. + * + * Returns: 0 if increment was not done, 1 otherwise. + */ +#define atomic_inc_not_zero_hint atomic_inc_not_zero_hint +static inline int atomic_inc_not_zero_hint(atomic_t *v, int hint) +{ + int val, c = hint, new; + + /* sanity test, should be removed by compiler if hint is a constant */ + if (!hint) + return atomic_inc_not_zero(v); + + do { + asm volatile("incl %0\n" + +#ifdef CONFIG_PAX_REFCOUNT + "jno 0f\n" + "decl %0\n" + "int $4\n0:\n" + _ASM_EXTABLE(0b, 0b) +#endif + + : "=r" (new) + : "0" (c)); + + val = atomic_cmpxchg(v, c, new); + if (val == c) + return 1; + c = val; + } while (c); + + return 0; +} + /* * atomic_dec_if_positive - decrement by 1 if old value positive * @v: pointer of type atomic_t diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/include/asm/atomic64_32.h linux-2.6.36.4-pax/arch/x86/include/asm/atomic64_32.h --- linux-2.6.36.4/arch/x86/include/asm/atomic64_32.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/include/asm/atomic64_32.h 2010-10-27 22:58:07.000000000 +0200 @@ -12,6 +12,14 @@ typedef struct { u64 __aligned(8) counter; } atomic64_t; +#ifdef CONFIG_PAX_REFCOUNT +typedef struct { + u64 __aligned(8) counter; +} atomic64_unchecked_t; +#else +typedef atomic64_t atomic64_unchecked_t; +#endif + #define ATOMIC64_INIT(val) { (val) } #ifdef CONFIG_X86_CMPXCHG64 diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/include/asm/atomic64_64.h linux-2.6.36.4-pax/arch/x86/include/asm/atomic64_64.h --- linux-2.6.36.4/arch/x86/include/asm/atomic64_64.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/include/asm/atomic64_64.h 2010-12-14 21:18:01.000000000 +0100 @@ -18,7 +18,19 @@ */ static inline long atomic64_read(const atomic64_t *v) { - return (*(volatile long *)&(v)->counter); + return (*(volatile const long *)&(v)->counter); +} + +/** + * atomic64_read_unchecked - read atomic64 variable + * @v: pointer of type atomic64_unchecked_t + * + * Atomically reads the value of @v. + * Doesn't imply a read memory barrier. + */ +static inline long atomic64_read_unchecked(const atomic64_unchecked_t *v) +{ + return (*(volatile const long *)&(v)->counter); } /** @@ -34,6 +46,18 @@ static inline void atomic64_set(atomic64 } /** + * atomic64_set_unchecked - set atomic64 variable + * @v: pointer to type atomic64_unchecked_t + * @i: required value + * + * Atomically sets the value of @v to @i. + */ +static inline void atomic64_set_unchecked(atomic64_unchecked_t *v, long i) +{ + v->counter = i; +} + +/** * atomic64_add - add integer to atomic64 variable * @i: integer value to add * @v: pointer to type atomic64_t @@ -42,6 +66,28 @@ static inline void atomic64_set(atomic64 */ static inline void atomic64_add(long i, atomic64_t *v) { + asm volatile(LOCK_PREFIX "addq %1,%0\n" + +#ifdef CONFIG_PAX_REFCOUNT + "jno 0f\n" + LOCK_PREFIX "subq %1,%0\n" + "int $4\n0:\n" + _ASM_EXTABLE(0b, 0b) +#endif + + : "=m" (v->counter) + : "er" (i), "m" (v->counter)); +} + +/** + * atomic64_add_unchecked - add integer to atomic64 variable + * @i: integer value to add + * @v: pointer to type atomic64_unchecked_t + * + * Atomically adds @i to @v. + */ +static inline void atomic64_add_unchecked(long i, atomic64_unchecked_t *v) +{ asm volatile(LOCK_PREFIX "addq %1,%0" : "=m" (v->counter) : "er" (i), "m" (v->counter)); @@ -56,7 +102,29 @@ static inline void atomic64_add(long i, */ static inline void atomic64_sub(long i, atomic64_t *v) { - asm volatile(LOCK_PREFIX "subq %1,%0" + asm volatile(LOCK_PREFIX "subq %1,%0\n" + +#ifdef CONFIG_PAX_REFCOUNT + "jno 0f\n" + LOCK_PREFIX "addq %1,%0\n" + "int $4\n0:\n" + _ASM_EXTABLE(0b, 0b) +#endif + + : "=m" (v->counter) + : "er" (i), "m" (v->counter)); +} + +/** + * atomic64_sub_unchecked - subtract the atomic64 variable + * @i: integer value to subtract + * @v: pointer to type atomic64_unchecked_t + * + * Atomically subtracts @i from @v. + */ +static inline void atomic64_sub_unchecked(long i, atomic64_unchecked_t *v) +{ + asm volatile(LOCK_PREFIX "subq %1,%0\n" : "=m" (v->counter) : "er" (i), "m" (v->counter)); } @@ -74,7 +142,16 @@ static inline int atomic64_sub_and_test( { unsigned char c; - asm volatile(LOCK_PREFIX "subq %2,%0; sete %1" + asm volatile(LOCK_PREFIX "subq %2,%0\n" + +#ifdef CONFIG_PAX_REFCOUNT + "jno 0f\n" + LOCK_PREFIX "addq %2,%0\n" + "int $4\n0:\n" + _ASM_EXTABLE(0b, 0b) +#endif + + "sete %1\n" : "=m" (v->counter), "=qm" (c) : "er" (i), "m" (v->counter) : "memory"); return c; @@ -88,6 +165,27 @@ static inline int atomic64_sub_and_test( */ static inline void atomic64_inc(atomic64_t *v) { + asm volatile(LOCK_PREFIX "incq %0\n" + +#ifdef CONFIG_PAX_REFCOUNT + "jno 0f\n" + LOCK_PREFIX "decq %0\n" + "int $4\n0:\n" + _ASM_EXTABLE(0b, 0b) +#endif + + : "=m" (v->counter) + : "m" (v->counter)); +} + +/** + * atomic64_inc_unchecked - increment atomic64 variable + * @v: pointer to type atomic64_unchecked_t + * + * Atomically increments @v by 1. + */ +static inline void atomic64_inc_unchecked(atomic64_unchecked_t *v) +{ asm volatile(LOCK_PREFIX "incq %0" : "=m" (v->counter) : "m" (v->counter)); @@ -101,7 +199,28 @@ static inline void atomic64_inc(atomic64 */ static inline void atomic64_dec(atomic64_t *v) { - asm volatile(LOCK_PREFIX "decq %0" + asm volatile(LOCK_PREFIX "decq %0\n" + +#ifdef CONFIG_PAX_REFCOUNT + "jno 0f\n" + LOCK_PREFIX "incq %0\n" + "int $4\n0:\n" + _ASM_EXTABLE(0b, 0b) +#endif + + : "=m" (v->counter) + : "m" (v->counter)); +} + +/** + * atomic64_dec_unchecked - decrement atomic64 variable + * @v: pointer to type atomic64_t + * + * Atomically decrements @v by 1. + */ +static inline void atomic64_dec_unchecked(atomic64_unchecked_t *v) +{ + asm volatile(LOCK_PREFIX "decq %0\n" : "=m" (v->counter) : "m" (v->counter)); } @@ -118,7 +237,16 @@ static inline int atomic64_dec_and_test( { unsigned char c; - asm volatile(LOCK_PREFIX "decq %0; sete %1" + asm volatile(LOCK_PREFIX "decq %0\n" + +#ifdef CONFIG_PAX_REFCOUNT + "jno 0f\n" + LOCK_PREFIX "incq %0\n" + "int $4\n0:\n" + _ASM_EXTABLE(0b, 0b) +#endif + + "sete %1\n" : "=m" (v->counter), "=qm" (c) : "m" (v->counter) : "memory"); return c != 0; @@ -136,7 +264,16 @@ static inline int atomic64_inc_and_test( { unsigned char c; - asm volatile(LOCK_PREFIX "incq %0; sete %1" + asm volatile(LOCK_PREFIX "incq %0\n" + +#ifdef CONFIG_PAX_REFCOUNT + "jno 0f\n" + LOCK_PREFIX "decq %0\n" + "int $4\n0:\n" + _ASM_EXTABLE(0b, 0b) +#endif + + "sete %1\n" : "=m" (v->counter), "=qm" (c) : "m" (v->counter) : "memory"); return c != 0; @@ -155,7 +292,16 @@ static inline int atomic64_add_negative( { unsigned char c; - asm volatile(LOCK_PREFIX "addq %2,%0; sets %1" + asm volatile(LOCK_PREFIX "addq %2,%0\n" + +#ifdef CONFIG_PAX_REFCOUNT + "jno 0f\n" + LOCK_PREFIX "subq %2,%0\n" + "int $4\n0:\n" + _ASM_EXTABLE(0b, 0b) +#endif + + "sets %1\n" : "=m" (v->counter), "=qm" (c) : "er" (i), "m" (v->counter) : "memory"); return c; @@ -171,7 +317,31 @@ static inline int atomic64_add_negative( static inline long atomic64_add_return(long i, atomic64_t *v) { long __i = i; - asm volatile(LOCK_PREFIX "xaddq %0, %1;" + asm volatile(LOCK_PREFIX "xaddq %0, %1\n" + +#ifdef CONFIG_PAX_REFCOUNT + "jno 0f\n" + "movq %0, %1\n" + "int $4\n0:\n" + _ASM_EXTABLE(0b, 0b) +#endif + + : "+r" (i), "+m" (v->counter) + : : "memory"); + return i + __i; +} + +/** + * atomic64_add_return_unchecked - add and return + * @i: integer value to add + * @v: pointer to type atomic64_unchecked_t + * + * Atomically adds @i to @v and returns @i + @v + */ +static inline long atomic64_add_return_unchecked(long i, atomic64_unchecked_t *v) +{ + long __i = i; + asm volatile(LOCK_PREFIX "xaddq %0, %1" : "+r" (i), "+m" (v->counter) : : "memory"); return i + __i; @@ -183,6 +353,10 @@ static inline long atomic64_sub_return(l } #define atomic64_inc_return(v) (atomic64_add_return(1, (v))) +static inline long atomic64_inc_return_unchecked(atomic64_unchecked_t *v) +{ + return atomic64_add_return_unchecked(1, v); +} #define atomic64_dec_return(v) (atomic64_sub_return(1, (v))) static inline long atomic64_cmpxchg(atomic64_t *v, long old, long new) @@ -206,17 +380,30 @@ static inline long atomic64_xchg(atomic6 */ static inline int atomic64_add_unless(atomic64_t *v, long a, long u) { - long c, old; + long c, old, new; c = atomic64_read(v); for (;;) { - if (unlikely(c == (u))) + if (unlikely(c == u)) break; - old = atomic64_cmpxchg((v), c, c + (a)); + + asm volatile("add %2,%0\n" + +#ifdef CONFIG_PAX_REFCOUNT + "jno 0f\n" + "sub %2,%0\n" + "int $4\n0:\n" + _ASM_EXTABLE(0b, 0b) +#endif + + : "=r" (new) + : "0" (c), "ir" (a)); + + old = atomic64_cmpxchg(v, c, new); if (likely(old == c)) break; c = old; } - return c != (u); + return c != u; } #define atomic64_inc_not_zero(v) atomic64_add_unless((v), 1, 0) diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/include/asm/bitops.h linux-2.6.36.4-pax/arch/x86/include/asm/bitops.h --- linux-2.6.36.4/arch/x86/include/asm/bitops.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/include/asm/bitops.h 2010-12-14 21:18:01.000000000 +0100 @@ -38,7 +38,7 @@ * a mask operation on a byte. */ #define IS_IMMEDIATE(nr) (__builtin_constant_p(nr)) -#define CONST_MASK_ADDR(nr, addr) BITOP_ADDR((void *)(addr) + ((nr)>>3)) +#define CONST_MASK_ADDR(nr, addr) BITOP_ADDR((volatile void *)(addr) + ((nr)>>3)) #define CONST_MASK(nr) (1 << ((nr) & 7)) /** diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/include/asm/boot.h linux-2.6.36.4-pax/arch/x86/include/asm/boot.h --- linux-2.6.36.4/arch/x86/include/asm/boot.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/include/asm/boot.h 2010-10-27 22:58:07.000000000 +0200 @@ -11,10 +11,15 @@ #include /* Physical address where kernel should be loaded. */ -#define LOAD_PHYSICAL_ADDR ((CONFIG_PHYSICAL_START \ +#define ____LOAD_PHYSICAL_ADDR ((CONFIG_PHYSICAL_START \ + (CONFIG_PHYSICAL_ALIGN - 1)) \ & ~(CONFIG_PHYSICAL_ALIGN - 1)) +#ifndef __ASSEMBLY__ +extern unsigned char __LOAD_PHYSICAL_ADDR[]; +#define LOAD_PHYSICAL_ADDR ((unsigned long)__LOAD_PHYSICAL_ADDR) +#endif + /* Minimum kernel alignment, as a power of two */ #ifdef CONFIG_X86_64 #define MIN_KERNEL_ALIGN_LG2 PMD_SHIFT diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/include/asm/cache.h linux-2.6.36.4-pax/arch/x86/include/asm/cache.h --- linux-2.6.36.4/arch/x86/include/asm/cache.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/include/asm/cache.h 2010-10-27 22:58:07.000000000 +0200 @@ -8,6 +8,7 @@ #define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT) #define __read_mostly __attribute__((__section__(".data..read_mostly"))) +#define __read_only __attribute__((__section__(".data..read_only"))) #define INTERNODE_CACHE_SHIFT CONFIG_X86_INTERNODE_CACHE_SHIFT #define INTERNODE_CACHE_BYTES (1 << INTERNODE_CACHE_SHIFT) diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/include/asm/cacheflush.h linux-2.6.36.4-pax/arch/x86/include/asm/cacheflush.h --- linux-2.6.36.4/arch/x86/include/asm/cacheflush.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/include/asm/cacheflush.h 2010-10-27 22:58:07.000000000 +0200 @@ -66,7 +66,7 @@ static inline unsigned long get_page_mem unsigned long pg_flags = pg->flags & _PGMT_MASK; if (pg_flags == _PGMT_DEFAULT) - return -1; + return ~0UL; else if (pg_flags == _PGMT_WC) return _PAGE_CACHE_WC; else if (pg_flags == _PGMT_UC_MINUS) diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/include/asm/checksum_32.h linux-2.6.36.4-pax/arch/x86/include/asm/checksum_32.h --- linux-2.6.36.4/arch/x86/include/asm/checksum_32.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/include/asm/checksum_32.h 2010-10-27 22:58:07.000000000 +0200 @@ -31,6 +31,14 @@ asmlinkage __wsum csum_partial_copy_gene int len, __wsum sum, int *src_err_ptr, int *dst_err_ptr); +asmlinkage __wsum csum_partial_copy_generic_to_user(const void *src, void *dst, + int len, __wsum sum, + int *src_err_ptr, int *dst_err_ptr); + +asmlinkage __wsum csum_partial_copy_generic_from_user(const void *src, void *dst, + int len, __wsum sum, + int *src_err_ptr, int *dst_err_ptr); + /* * Note: when you get a NULL pointer exception here this means someone * passed in an incorrect kernel address to one of these functions. @@ -50,7 +58,7 @@ static inline __wsum csum_partial_copy_f int *err_ptr) { might_sleep(); - return csum_partial_copy_generic((__force void *)src, dst, + return csum_partial_copy_generic_from_user((__force void *)src, dst, len, sum, err_ptr, NULL); } @@ -178,7 +186,7 @@ static inline __wsum csum_and_copy_to_us { might_sleep(); if (access_ok(VERIFY_WRITE, dst, len)) - return csum_partial_copy_generic(src, (__force void *)dst, + return csum_partial_copy_generic_to_user(src, (__force void *)dst, len, sum, NULL, err_ptr); if (len) diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/include/asm/cpufeature.h linux-2.6.36.4-pax/arch/x86/include/asm/cpufeature.h --- linux-2.6.36.4/arch/x86/include/asm/cpufeature.h 2010-12-14 21:09:00.000000000 +0100 +++ linux-2.6.36.4-pax/arch/x86/include/asm/cpufeature.h 2010-12-14 21:09:07.000000000 +0100 @@ -338,7 +338,7 @@ static __always_inline __pure bool __sta ".section .discard,\"aw\",@progbits\n" " .byte 0xff + (4f-3f) - (2b-1b)\n" /* size check */ ".previous\n" - ".section .altinstr_replacement,\"ax\"\n" + ".section .altinstr_replacement,\"a\"\n" "3: movb $1,%0\n" "4:\n" ".previous\n" diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/include/asm/desc.h linux-2.6.36.4-pax/arch/x86/include/asm/desc.h --- linux-2.6.36.4/arch/x86/include/asm/desc.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/include/asm/desc.h 2011-02-24 17:39:32.000000000 +0100 @@ -4,6 +4,7 @@ #include #include #include +#include #include static inline void fill_ldt(struct desc_struct *desc, @@ -15,6 +16,7 @@ static inline void fill_ldt(struct desc_ desc->base1 = (info->base_addr & 0x00ff0000) >> 16; desc->type = (info->read_exec_only ^ 1) << 1; desc->type |= info->contents << 2; + desc->type |= info->seg_not_present ^ 1; desc->s = 1; desc->dpl = 0x3; desc->p = info->seg_not_present ^ 1; @@ -31,16 +33,12 @@ static inline void fill_ldt(struct desc_ } extern struct desc_ptr idt_descr; -extern gate_desc idt_table[]; - -struct gdt_page { - struct desc_struct gdt[GDT_ENTRIES]; -} __attribute__((aligned(PAGE_SIZE))); -DECLARE_PER_CPU_PAGE_ALIGNED(struct gdt_page, gdt_page); +extern gate_desc idt_table[256]; +extern struct desc_struct cpu_gdt_table[NR_CPUS][PAGE_SIZE / sizeof(struct desc_struct)]; static inline struct desc_struct *get_cpu_gdt_table(unsigned int cpu) { - return per_cpu(gdt_page, cpu).gdt; + return cpu_gdt_table[cpu]; } #ifdef CONFIG_X86_64 @@ -65,9 +63,14 @@ static inline void pack_gate(gate_desc * unsigned long base, unsigned dpl, unsigned flags, unsigned short seg) { - gate->a = (seg << 16) | (base & 0xffff); - gate->b = (base & 0xffff0000) | - (((0x80 | type | (dpl << 5)) & 0xff) << 8); + gate->gate.offset_low = base; + gate->gate.seg = seg; + gate->gate.reserved = 0; + gate->gate.type = type; + gate->gate.s = 0; + gate->gate.dpl = dpl; + gate->gate.p = 1; + gate->gate.offset_high = base >> 16; } #endif @@ -115,19 +118,24 @@ static inline void paravirt_free_ldt(str static inline void native_write_idt_entry(gate_desc *idt, int entry, const gate_desc *gate) { + pax_open_kernel(); memcpy(&idt[entry], gate, sizeof(*gate)); + pax_close_kernel(); } static inline void native_write_ldt_entry(struct desc_struct *ldt, int entry, const void *desc) { + pax_open_kernel(); memcpy(&ldt[entry], desc, 8); + pax_close_kernel(); } static inline void native_write_gdt_entry(struct desc_struct *gdt, int entry, const void *desc, int type) { unsigned int size; + switch (type) { case DESC_TSS: size = sizeof(tss_desc); @@ -139,7 +147,10 @@ static inline void native_write_gdt_entr size = sizeof(struct desc_struct); break; } + + pax_open_kernel(); memcpy(&gdt[entry], desc, size); + pax_close_kernel(); } static inline void pack_descriptor(struct desc_struct *desc, unsigned long base, @@ -211,7 +222,9 @@ static inline void native_set_ldt(const static inline void native_load_tr_desc(void) { + pax_open_kernel(); asm volatile("ltr %w0"::"q" (GDT_ENTRY_TSS*8)); + pax_close_kernel(); } static inline void native_load_gdt(const struct desc_ptr *dtr) @@ -246,8 +259,10 @@ static inline void native_load_tls(struc unsigned int i; struct desc_struct *gdt = get_cpu_gdt_table(cpu); + pax_open_kernel(); for (i = 0; i < GDT_ENTRY_TLS_ENTRIES; i++) gdt[GDT_ENTRY_TLS_MIN + i] = t->tls_array[i]; + pax_close_kernel(); } #define _LDT_empty(info) \ @@ -309,7 +324,7 @@ static inline void set_desc_limit(struct desc->limit = (limit >> 16) & 0xf; } -static inline void _set_gate(int gate, unsigned type, void *addr, +static inline void _set_gate(int gate, unsigned type, const void *addr, unsigned dpl, unsigned ist, unsigned seg) { gate_desc s; @@ -327,7 +342,7 @@ static inline void _set_gate(int gate, u * Pentium F0 0F bugfix can have resulted in the mapped * IDT being write-protected. */ -static inline void set_intr_gate(unsigned int n, void *addr) +static inline void set_intr_gate(unsigned int n, const void *addr) { BUG_ON((unsigned)n > 0xFF); _set_gate(n, GATE_INTERRUPT, addr, 0, 0, __KERNEL_CS); @@ -356,19 +371,19 @@ static inline void alloc_intr_gate(unsig /* * This routine sets up an interrupt gate at directory privilege level 3. */ -static inline void set_system_intr_gate(unsigned int n, void *addr) +static inline void set_system_intr_gate(unsigned int n, const void *addr) { BUG_ON((unsigned)n > 0xFF); _set_gate(n, GATE_INTERRUPT, addr, 0x3, 0, __KERNEL_CS); } -static inline void set_system_trap_gate(unsigned int n, void *addr) +static inline void set_system_trap_gate(unsigned int n, const void *addr) { BUG_ON((unsigned)n > 0xFF); _set_gate(n, GATE_TRAP, addr, 0x3, 0, __KERNEL_CS); } -static inline void set_trap_gate(unsigned int n, void *addr) +static inline void set_trap_gate(unsigned int n, const void *addr) { BUG_ON((unsigned)n > 0xFF); _set_gate(n, GATE_TRAP, addr, 0, 0, __KERNEL_CS); @@ -377,19 +392,31 @@ static inline void set_trap_gate(unsigne static inline void set_task_gate(unsigned int n, unsigned int gdt_entry) { BUG_ON((unsigned)n > 0xFF); - _set_gate(n, GATE_TASK, (void *)0, 0, 0, (gdt_entry<<3)); + _set_gate(n, GATE_TASK, (const void *)0, 0, 0, (gdt_entry<<3)); } -static inline void set_intr_gate_ist(int n, void *addr, unsigned ist) +static inline void set_intr_gate_ist(int n, const void *addr, unsigned ist) { BUG_ON((unsigned)n > 0xFF); _set_gate(n, GATE_INTERRUPT, addr, 0, ist, __KERNEL_CS); } -static inline void set_system_intr_gate_ist(int n, void *addr, unsigned ist) +static inline void set_system_intr_gate_ist(int n, const void *addr, unsigned ist) { BUG_ON((unsigned)n > 0xFF); _set_gate(n, GATE_INTERRUPT, addr, 0x3, ist, __KERNEL_CS); } +#ifdef CONFIG_X86_32 +static inline void set_user_cs(unsigned long base, unsigned long limit, int cpu) +{ + struct desc_struct d; + + if (likely(limit)) + limit = (limit - 1UL) >> PAGE_SHIFT; + pack_descriptor(&d, base, limit, 0xFB, 0xC); + write_gdt_entry(get_cpu_gdt_table(cpu), GDT_ENTRY_DEFAULT_USER_CS, &d, DESCTYPE_S); +} +#endif + #endif /* _ASM_X86_DESC_H */ diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/include/asm/desc_defs.h linux-2.6.36.4-pax/arch/x86/include/asm/desc_defs.h --- linux-2.6.36.4/arch/x86/include/asm/desc_defs.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/include/asm/desc_defs.h 2011-02-24 17:38:07.000000000 +0100 @@ -31,6 +31,12 @@ struct desc_struct { unsigned base1: 8, type: 4, s: 1, dpl: 2, p: 1; unsigned limit: 4, avl: 1, l: 1, d: 1, g: 1, base2: 8; }; + struct { + u16 offset_low; + u16 seg; + unsigned reserved: 8, type: 4, s: 1, dpl: 2, p: 1; + unsigned offset_high: 16; + } gate; }; } __attribute__((packed)); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/include/asm/device.h linux-2.6.36.4-pax/arch/x86/include/asm/device.h --- linux-2.6.36.4/arch/x86/include/asm/device.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/include/asm/device.h 2010-10-27 22:58:44.000000000 +0200 @@ -6,7 +6,7 @@ struct dev_archdata { void *acpi_handle; #endif #ifdef CONFIG_X86_64 -struct dma_map_ops *dma_ops; + const struct dma_map_ops *dma_ops; #endif #if defined(CONFIG_DMAR) || defined(CONFIG_AMD_IOMMU) void *iommu; /* hook for IOMMU specific extension */ diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/include/asm/dma-mapping.h linux-2.6.36.4-pax/arch/x86/include/asm/dma-mapping.h --- linux-2.6.36.4/arch/x86/include/asm/dma-mapping.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/include/asm/dma-mapping.h 2010-10-27 22:58:44.000000000 +0200 @@ -26,9 +26,9 @@ extern int iommu_merge; extern struct device x86_dma_fallback_dev; extern int panic_on_overflow; -extern struct dma_map_ops *dma_ops; +extern const struct dma_map_ops *dma_ops; -static inline struct dma_map_ops *get_dma_ops(struct device *dev) +static inline const struct dma_map_ops *get_dma_ops(struct device *dev) { #ifdef CONFIG_X86_32 return dma_ops; @@ -45,7 +45,7 @@ static inline struct dma_map_ops *get_dm /* Make sure we keep the same behaviour */ static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr) { - struct dma_map_ops *ops = get_dma_ops(dev); + const struct dma_map_ops *ops = get_dma_ops(dev); if (ops->mapping_error) return ops->mapping_error(dev, dma_addr); @@ -115,7 +115,7 @@ static inline void * dma_alloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_handle, gfp_t gfp) { - struct dma_map_ops *ops = get_dma_ops(dev); + const struct dma_map_ops *ops = get_dma_ops(dev); void *memory; gfp &= ~(__GFP_DMA | __GFP_HIGHMEM | __GFP_DMA32); @@ -142,7 +142,7 @@ dma_alloc_coherent(struct device *dev, s static inline void dma_free_coherent(struct device *dev, size_t size, void *vaddr, dma_addr_t bus) { - struct dma_map_ops *ops = get_dma_ops(dev); + const struct dma_map_ops *ops = get_dma_ops(dev); WARN_ON(irqs_disabled()); /* for portability */ diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/include/asm/e820.h linux-2.6.36.4-pax/arch/x86/include/asm/e820.h --- linux-2.6.36.4/arch/x86/include/asm/e820.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/include/asm/e820.h 2010-10-27 22:58:07.000000000 +0200 @@ -69,7 +69,7 @@ struct e820map { #define ISA_START_ADDRESS 0xa0000 #define ISA_END_ADDRESS 0x100000 -#define BIOS_BEGIN 0x000a0000 +#define BIOS_BEGIN 0x000c0000 #define BIOS_END 0x00100000 #ifdef __KERNEL__ diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/include/asm/elf.h linux-2.6.36.4-pax/arch/x86/include/asm/elf.h --- linux-2.6.36.4/arch/x86/include/asm/elf.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/include/asm/elf.h 2010-10-27 22:58:07.000000000 +0200 @@ -237,7 +237,25 @@ extern int force_personality32; the loader. We need to make sure that it is out of the way of the program that it will "exec", and that there is sufficient room for the brk. */ +#ifdef CONFIG_PAX_SEGMEXEC +#define ELF_ET_DYN_BASE ((current->mm->pax_flags & MF_PAX_SEGMEXEC) ? SEGMEXEC_TASK_SIZE/3*2 : TASK_SIZE/3*2) +#else #define ELF_ET_DYN_BASE (TASK_SIZE / 3 * 2) +#endif + +#ifdef CONFIG_PAX_ASLR +#ifdef CONFIG_X86_32 +#define PAX_ELF_ET_DYN_BASE 0x10000000UL + +#define PAX_DELTA_MMAP_LEN (current->mm->pax_flags & MF_PAX_SEGMEXEC ? 15 : 16) +#define PAX_DELTA_STACK_LEN (current->mm->pax_flags & MF_PAX_SEGMEXEC ? 15 : 16) +#else +#define PAX_ELF_ET_DYN_BASE 0x400000UL + +#define PAX_DELTA_MMAP_LEN ((test_thread_flag(TIF_IA32)) ? 16 : TASK_SIZE_MAX_SHIFT - PAGE_SHIFT - 3) +#define PAX_DELTA_STACK_LEN ((test_thread_flag(TIF_IA32)) ? 16 : TASK_SIZE_MAX_SHIFT - PAGE_SHIFT - 3) +#endif +#endif /* This yields a mask that user programs can use to figure out what instruction set this CPU supports. This could be done in user space, @@ -291,8 +309,7 @@ do { \ #define ARCH_DLINFO \ do { \ if (vdso_enabled) \ - NEW_AUX_ENT(AT_SYSINFO_EHDR, \ - (unsigned long)current->mm->context.vdso); \ + NEW_AUX_ENT(AT_SYSINFO_EHDR, current->mm->context.vdso);\ } while (0) #define AT_SYSINFO 32 @@ -303,7 +320,7 @@ do { \ #endif /* !CONFIG_X86_32 */ -#define VDSO_CURRENT_BASE ((unsigned long)current->mm->context.vdso) +#define VDSO_CURRENT_BASE (current->mm->context.vdso) #define VDSO_ENTRY \ ((unsigned long)VDSO32_SYMBOL(VDSO_CURRENT_BASE, vsyscall)) @@ -317,7 +334,4 @@ extern int arch_setup_additional_pages(s extern int syscall32_setup_pages(struct linux_binprm *, int exstack); #define compat_arch_setup_additional_pages syscall32_setup_pages -extern unsigned long arch_randomize_brk(struct mm_struct *mm); -#define arch_randomize_brk arch_randomize_brk - #endif /* _ASM_X86_ELF_H */ diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/include/asm/futex.h linux-2.6.36.4-pax/arch/x86/include/asm/futex.h --- linux-2.6.36.4/arch/x86/include/asm/futex.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/include/asm/futex.h 2011-03-07 20:18:58.000000000 +0100 @@ -12,16 +12,18 @@ #include #define __futex_atomic_op1(insn, ret, oldval, uaddr, oparg) \ + typecheck(u32 *, uaddr); \ asm volatile("1:\t" insn "\n" \ "2:\t.section .fixup,\"ax\"\n" \ "3:\tmov\t%3, %1\n" \ "\tjmp\t2b\n" \ "\t.previous\n" \ _ASM_EXTABLE(1b, 3b) \ - : "=r" (oldval), "=r" (ret), "+m" (*uaddr) \ + : "=r" (oldval), "=r" (ret), "+m" (*(u32 *)____m(uaddr))\ : "i" (-EFAULT), "0" (oparg), "1" (0)) #define __futex_atomic_op2(insn, ret, oldval, uaddr, oparg) \ + typecheck(u32 *, uaddr); \ asm volatile("1:\tmovl %2, %0\n" \ "\tmovl\t%0, %3\n" \ "\t" insn "\n" \ @@ -34,10 +36,10 @@ _ASM_EXTABLE(1b, 4b) \ _ASM_EXTABLE(2b, 4b) \ : "=&a" (oldval), "=&r" (ret), \ - "+m" (*uaddr), "=&r" (tem) \ + "+m" (*(u32 *)____m(uaddr)), "=&r" (tem) \ : "r" (oparg), "i" (-EFAULT), "1" (0)) -static inline int futex_atomic_op_inuser(int encoded_op, int __user *uaddr) +static inline int futex_atomic_op_inuser(int encoded_op, u32 __user *uaddr) { int op = (encoded_op >> 28) & 7; int cmp = (encoded_op >> 24) & 15; @@ -61,10 +63,10 @@ static inline int futex_atomic_op_inuser switch (op) { case FUTEX_OP_SET: - __futex_atomic_op1("xchgl %0, %2", ret, oldval, uaddr, oparg); + __futex_atomic_op1(__copyuser_seg"xchgl %0, %2", ret, oldval, uaddr, oparg); break; case FUTEX_OP_ADD: - __futex_atomic_op1(LOCK_PREFIX "xaddl %0, %2", ret, oldval, + __futex_atomic_op1(LOCK_PREFIX __copyuser_seg"xaddl %0, %2", ret, oldval, uaddr, oparg); break; case FUTEX_OP_OR: @@ -109,7 +111,7 @@ static inline int futex_atomic_op_inuser return ret; } -static inline int futex_atomic_cmpxchg_inatomic(int __user *uaddr, int oldval, +static inline int futex_atomic_cmpxchg_inatomic(u32 __user *uaddr, int oldval, int newval) { @@ -119,16 +121,16 @@ static inline int futex_atomic_cmpxchg_i return -ENOSYS; #endif - if (!access_ok(VERIFY_WRITE, uaddr, sizeof(int))) + if (!access_ok(VERIFY_WRITE, uaddr, sizeof(u32))) return -EFAULT; - asm volatile("1:\t" LOCK_PREFIX "cmpxchgl %3, %1\n" + asm volatile("1:\t" LOCK_PREFIX __copyuser_seg"cmpxchgl %3, %1\n" "2:\t.section .fixup, \"ax\"\n" "3:\tmov %2, %0\n" "\tjmp 2b\n" "\t.previous\n" _ASM_EXTABLE(1b, 3b) - : "=a" (oldval), "+m" (*uaddr) + : "=a" (oldval), "+m" (*(u32 *)____m(uaddr)) : "i" (-EFAULT), "r" (newval), "0" (oldval) : "memory" ); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/include/asm/i387.h linux-2.6.36.4-pax/arch/x86/include/asm/i387.h --- linux-2.6.36.4/arch/x86/include/asm/i387.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/include/asm/i387.h 2010-11-01 20:56:46.000000000 +0100 @@ -90,6 +90,11 @@ static inline int fxrstor_checking(struc { int err; +#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF) + if ((unsigned long)fx < PAX_USER_SHADOW_BASE) + fx = (struct i387_fxsave_struct *)((void *)fx + PAX_USER_SHADOW_BASE); +#endif + asm volatile("1: rex64/fxrstor (%[fx])\n\t" "2:\n" ".section .fixup,\"ax\"\n" @@ -140,6 +145,11 @@ static inline int fxsave_user(struct i38 { int err; +#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF) + if ((unsigned long)fx < PAX_USER_SHADOW_BASE) + fx = (struct i387_fxsave_struct __user *)((void __user *)fx + PAX_USER_SHADOW_BASE); +#endif + /* * Clear the bytes not touched by the fxsave and reserved * for the SW usage. @@ -242,13 +252,8 @@ static inline int fxrstor_checking(struc } /* We need a safe address that is cheap to find and that is already - in L1 during context switch. The best choices are unfortunately - different for UP and SMP */ -#ifdef CONFIG_SMP -#define safe_address (__per_cpu_offset[0]) -#else -#define safe_address (kstat_cpu(0).cpustat.user) -#endif + in L1 during context switch. */ +#define safe_address (init_tss[smp_processor_id()].x86_tss.sp0) /* * These must be called with preempt disabled diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/include/asm/io.h linux-2.6.36.4-pax/arch/x86/include/asm/io.h --- linux-2.6.36.4/arch/x86/include/asm/io.h 2010-12-14 21:09:00.000000000 +0100 +++ linux-2.6.36.4-pax/arch/x86/include/asm/io.h 2011-01-27 23:41:00.000000000 +0100 @@ -214,6 +214,17 @@ extern void set_iounmap_nonlazy(void); #include +#define ARCH_HAS_VALID_PHYS_ADDR_RANGE +static inline int valid_phys_addr_range(unsigned long addr, size_t count) +{ + return ((addr + count + PAGE_SIZE - 1) >> PAGE_SHIFT) < (1ULL << (boot_cpu_data.x86_phys_bits - PAGE_SHIFT)) ? 1 : 0; +} + +static inline int valid_mmap_phys_addr_range(unsigned long pfn, size_t count) +{ + return (pfn + (count >> PAGE_SHIFT)) < (1ULL << (boot_cpu_data.x86_phys_bits - PAGE_SHIFT)) ? 1 : 0; +} + /* * Convert a virtual cached pointer to an uncached pointer */ diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/include/asm/iommu.h linux-2.6.36.4-pax/arch/x86/include/asm/iommu.h --- linux-2.6.36.4/arch/x86/include/asm/iommu.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/include/asm/iommu.h 2010-10-27 22:58:44.000000000 +0200 @@ -1,7 +1,7 @@ #ifndef _ASM_X86_IOMMU_H #define _ASM_X86_IOMMU_H -extern struct dma_map_ops nommu_dma_ops; +extern const struct dma_map_ops nommu_dma_ops; extern int force_iommu, no_iommu; extern int iommu_detected; extern int iommu_pass_through; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/include/asm/irqflags.h linux-2.6.36.4-pax/arch/x86/include/asm/irqflags.h --- linux-2.6.36.4/arch/x86/include/asm/irqflags.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/include/asm/irqflags.h 2010-10-27 22:58:07.000000000 +0200 @@ -142,6 +142,11 @@ static inline unsigned long __raw_local_ sti; \ sysexit +#define GET_CR0_INTO_RDI mov %cr0, %rdi +#define SET_RDI_INTO_CR0 mov %rdi, %cr0 +#define GET_CR3_INTO_RDI mov %cr3, %rdi +#define SET_RDI_INTO_CR3 mov %rdi, %cr3 + #else #define INTERRUPT_RETURN iret #define ENABLE_INTERRUPTS_SYSEXIT sti; sysexit diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/include/asm/kvm_host.h linux-2.6.36.4-pax/arch/x86/include/asm/kvm_host.h --- linux-2.6.36.4/arch/x86/include/asm/kvm_host.h 2011-01-12 15:14:10.000000000 +0100 +++ linux-2.6.36.4-pax/arch/x86/include/asm/kvm_host.h 2011-01-12 15:14:27.000000000 +0100 @@ -525,7 +525,7 @@ struct kvm_x86_ops { const struct trace_print_flags *exit_reasons_str; }; -extern struct kvm_x86_ops *kvm_x86_ops; +extern const struct kvm_x86_ops *kvm_x86_ops; int kvm_mmu_module_init(void); void kvm_mmu_module_exit(void); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/include/asm/local.h linux-2.6.36.4-pax/arch/x86/include/asm/local.h --- linux-2.6.36.4/arch/x86/include/asm/local.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/include/asm/local.h 2010-12-30 16:38:01.000000000 +0100 @@ -18,26 +18,58 @@ typedef struct { static inline void local_inc(local_t *l) { - asm volatile(_ASM_INC "%0" + asm volatile(_ASM_INC "%0\n" + +#ifdef CONFIG_PAX_REFCOUNT + "jno 0f\n" + _ASM_DEC "%0\n" + "int $4\n0:\n" + _ASM_EXTABLE(0b, 0b) +#endif + : "+m" (l->a.counter)); } static inline void local_dec(local_t *l) { - asm volatile(_ASM_DEC "%0" + asm volatile(_ASM_DEC "%0\n" + +#ifdef CONFIG_PAX_REFCOUNT + "jno 0f\n" + _ASM_INC "%0\n" + "int $4\n0:\n" + _ASM_EXTABLE(0b, 0b) +#endif + : "+m" (l->a.counter)); } static inline void local_add(long i, local_t *l) { - asm volatile(_ASM_ADD "%1,%0" + asm volatile(_ASM_ADD "%1,%0\n" + +#ifdef CONFIG_PAX_REFCOUNT + "jno 0f\n" + _ASM_SUB "%1,%0\n" + "int $4\n0:\n" + _ASM_EXTABLE(0b, 0b) +#endif + : "+m" (l->a.counter) : "ir" (i)); } static inline void local_sub(long i, local_t *l) { - asm volatile(_ASM_SUB "%1,%0" + asm volatile(_ASM_SUB "%1,%0\n" + +#ifdef CONFIG_PAX_REFCOUNT + "jno 0f\n" + _ASM_ADD "%1,%0\n" + "int $4\n0:\n" + _ASM_EXTABLE(0b, 0b) +#endif + : "+m" (l->a.counter) : "ir" (i)); } @@ -55,7 +87,16 @@ static inline int local_sub_and_test(lon { unsigned char c; - asm volatile(_ASM_SUB "%2,%0; sete %1" + asm volatile(_ASM_SUB "%2,%0\n" + +#ifdef CONFIG_PAX_REFCOUNT + "jno 0f\n" + _ASM_ADD "%2,%0\n" + "int $4\n0:\n" + _ASM_EXTABLE(0b, 0b) +#endif + + "sete %1\n" : "+m" (l->a.counter), "=qm" (c) : "ir" (i) : "memory"); return c; @@ -73,7 +114,16 @@ static inline int local_dec_and_test(loc { unsigned char c; - asm volatile(_ASM_DEC "%0; sete %1" + asm volatile(_ASM_DEC "%0\n" + +#ifdef CONFIG_PAX_REFCOUNT + "jno 0f\n" + _ASM_INC "%0\n" + "int $4\n0:\n" + _ASM_EXTABLE(0b, 0b) +#endif + + "sete %1\n" : "+m" (l->a.counter), "=qm" (c) : : "memory"); return c != 0; @@ -91,7 +141,16 @@ static inline int local_inc_and_test(loc { unsigned char c; - asm volatile(_ASM_INC "%0; sete %1" + asm volatile(_ASM_INC "%0\n" + +#ifdef CONFIG_PAX_REFCOUNT + "jno 0f\n" + _ASM_DEC "%0\n" + "int $4\n0:\n" + _ASM_EXTABLE(0b, 0b) +#endif + + "sete %1\n" : "+m" (l->a.counter), "=qm" (c) : : "memory"); return c != 0; @@ -110,7 +169,16 @@ static inline int local_add_negative(lon { unsigned char c; - asm volatile(_ASM_ADD "%2,%0; sets %1" + asm volatile(_ASM_ADD "%2,%0\n" + +#ifdef CONFIG_PAX_REFCOUNT + "jno 0f\n" + _ASM_SUB "%2,%0\n" + "int $4\n0:\n" + _ASM_EXTABLE(0b, 0b) +#endif + + "sets %1\n" : "+m" (l->a.counter), "=qm" (c) : "ir" (i) : "memory"); return c; @@ -133,7 +201,15 @@ static inline long local_add_return(long #endif /* Modern 486+ processor */ __i = i; - asm volatile(_ASM_XADD "%0, %1;" + asm volatile(_ASM_XADD "%0, %1\n" + +#ifdef CONFIG_PAX_REFCOUNT + "jno 0f\n" + _ASM_MOV "%0,%1\n" + "int $4\n0:\n" + _ASM_EXTABLE(0b, 0b) +#endif + : "+r" (i), "+m" (l->a.counter) : : "memory"); return i + __i; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/include/asm/mc146818rtc.h linux-2.6.36.4-pax/arch/x86/include/asm/mc146818rtc.h --- linux-2.6.36.4/arch/x86/include/asm/mc146818rtc.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/include/asm/mc146818rtc.h 2010-10-27 22:58:07.000000000 +0200 @@ -81,8 +81,8 @@ static inline unsigned char current_lock #else #define lock_cmos_prefix(reg) do {} while (0) #define lock_cmos_suffix(reg) do {} while (0) -#define lock_cmos(reg) -#define unlock_cmos() +#define lock_cmos(reg) do {} while (0) +#define unlock_cmos() do {} while (0) #define do_i_have_lock_cmos() 0 #define current_lock_cmos_reg() 0 #endif diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/include/asm/microcode.h linux-2.6.36.4-pax/arch/x86/include/asm/microcode.h --- linux-2.6.36.4/arch/x86/include/asm/microcode.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/include/asm/microcode.h 2010-10-27 22:58:44.000000000 +0200 @@ -12,13 +12,13 @@ struct device; enum ucode_state { UCODE_ERROR, UCODE_OK, UCODE_NFOUND }; struct microcode_ops { - enum ucode_state (*request_microcode_user) (int cpu, + enum ucode_state (* const request_microcode_user) (int cpu, const void __user *buf, size_t size); - enum ucode_state (*request_microcode_fw) (int cpu, + enum ucode_state (* const request_microcode_fw) (int cpu, struct device *device); - void (*microcode_fini_cpu) (int cpu); + void (* const microcode_fini_cpu) (int cpu); /* * The generic 'microcode_core' part guarantees that @@ -38,18 +38,18 @@ struct ucode_cpu_info { extern struct ucode_cpu_info ucode_cpu_info[]; #ifdef CONFIG_MICROCODE_INTEL -extern struct microcode_ops * __init init_intel_microcode(void); +extern const struct microcode_ops * __init init_intel_microcode(void); #else -static inline struct microcode_ops * __init init_intel_microcode(void) +static inline const struct microcode_ops * __init init_intel_microcode(void) { return NULL; } #endif /* CONFIG_MICROCODE_INTEL */ #ifdef CONFIG_MICROCODE_AMD -extern struct microcode_ops * __init init_amd_microcode(void); +extern const struct microcode_ops * __init init_amd_microcode(void); #else -static inline struct microcode_ops * __init init_amd_microcode(void) +static inline const struct microcode_ops * __init init_amd_microcode(void) { return NULL; } diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/include/asm/mman.h linux-2.6.36.4-pax/arch/x86/include/asm/mman.h --- linux-2.6.36.4/arch/x86/include/asm/mman.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/include/asm/mman.h 2010-10-27 22:58:07.000000000 +0200 @@ -5,4 +5,14 @@ #include +#ifdef __KERNEL__ +#ifndef __ASSEMBLY__ +#ifdef CONFIG_X86_32 +#define arch_mmap_check i386_mmap_check +int i386_mmap_check(unsigned long addr, unsigned long len, + unsigned long flags); +#endif +#endif +#endif + #endif /* _ASM_X86_MMAN_H */ diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/include/asm/mmu.h linux-2.6.36.4-pax/arch/x86/include/asm/mmu.h --- linux-2.6.36.4/arch/x86/include/asm/mmu.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/include/asm/mmu.h 2010-10-27 22:58:07.000000000 +0200 @@ -9,10 +9,23 @@ * we put the segment information here. */ typedef struct { - void *ldt; + struct desc_struct *ldt; int size; struct mutex lock; - void *vdso; + unsigned long vdso; + +#ifdef CONFIG_X86_32 +#if defined(CONFIG_PAX_PAGEEXEC) || defined(CONFIG_PAX_SEGMEXEC) + unsigned long user_cs_base; + unsigned long user_cs_limit; + +#if defined(CONFIG_PAX_PAGEEXEC) && defined(CONFIG_SMP) + cpumask_t cpu_user_cs_mask; +#endif + +#endif +#endif + } mm_context_t; #ifdef CONFIG_SMP diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/include/asm/mmu_context.h linux-2.6.36.4-pax/arch/x86/include/asm/mmu_context.h --- linux-2.6.36.4/arch/x86/include/asm/mmu_context.h 2011-02-24 20:16:27.000000000 +0100 +++ linux-2.6.36.4-pax/arch/x86/include/asm/mmu_context.h 2011-02-24 20:30:34.000000000 +0100 @@ -24,6 +24,21 @@ void destroy_context(struct mm_struct *m static inline void enter_lazy_tlb(struct mm_struct *mm, struct task_struct *tsk) { + +#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF) + unsigned int i; + pgd_t *pgd; + + pax_open_kernel(); + pgd = get_cpu_pgd(smp_processor_id()); + for (i = USER_PGD_PTRS; i < 2 * USER_PGD_PTRS; ++i) + if (paravirt_enabled()) + set_pgd(pgd+i, native_make_pgd(0)); + else + pgd[i] = native_make_pgd(0); + pax_close_kernel(); +#endif + #ifdef CONFIG_SMP if (percpu_read(cpu_tlbstate.state) == TLBSTATE_OK) percpu_write(cpu_tlbstate.state, TLBSTATE_LAZY); @@ -34,16 +49,30 @@ static inline void switch_mm(struct mm_s struct task_struct *tsk) { unsigned cpu = smp_processor_id(); +#if defined(CONFIG_X86_32) && defined(CONFIG_SMP) + int tlbstate = TLBSTATE_OK; +#endif if (likely(prev != next)) { #ifdef CONFIG_SMP +#ifdef CONFIG_X86_32 + tlbstate = percpu_read(cpu_tlbstate.state); +#endif percpu_write(cpu_tlbstate.state, TLBSTATE_OK); percpu_write(cpu_tlbstate.active_mm, next); #endif cpumask_set_cpu(cpu, mm_cpumask(next)); /* Re-load page tables */ +#ifdef CONFIG_PAX_PER_CPU_PGD + pax_open_kernel(); + __clone_user_pgds(get_cpu_pgd(cpu), next->pgd, USER_PGD_PTRS); + __shadow_user_pgds(get_cpu_pgd(cpu) + USER_PGD_PTRS, next->pgd, USER_PGD_PTRS); + pax_close_kernel(); + load_cr3(get_cpu_pgd(cpu)); +#else load_cr3(next->pgd); +#endif /* stop flush ipis for the previous mm */ cpumask_clear_cpu(cpu, mm_cpumask(prev)); @@ -53,9 +82,38 @@ static inline void switch_mm(struct mm_s */ if (unlikely(prev->context.ldt != next->context.ldt)) load_LDT_nolock(&next->context); - } + +#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_PAGEEXEC) && defined(CONFIG_SMP) + if (!(__supported_pte_mask & _PAGE_NX)) { + smp_mb__before_clear_bit(); + cpu_clear(cpu, prev->context.cpu_user_cs_mask); + smp_mb__after_clear_bit(); + cpu_set(cpu, next->context.cpu_user_cs_mask); + } +#endif + +#if defined(CONFIG_X86_32) && (defined(CONFIG_PAX_PAGEEXEC) || defined(CONFIG_PAX_SEGMEXEC)) + if (unlikely(prev->context.user_cs_base != next->context.user_cs_base || + prev->context.user_cs_limit != next->context.user_cs_limit)) + set_user_cs(next->context.user_cs_base, next->context.user_cs_limit, cpu); #ifdef CONFIG_SMP + else if (unlikely(tlbstate != TLBSTATE_OK)) + set_user_cs(next->context.user_cs_base, next->context.user_cs_limit, cpu); +#endif +#endif + + } else { + +#ifdef CONFIG_PAX_PER_CPU_PGD + pax_open_kernel(); + __clone_user_pgds(get_cpu_pgd(cpu), next->pgd, USER_PGD_PTRS); + __shadow_user_pgds(get_cpu_pgd(cpu) + USER_PGD_PTRS, next->pgd, USER_PGD_PTRS); + pax_close_kernel(); + load_cr3(get_cpu_pgd(cpu)); +#endif + +#ifdef CONFIG_SMP percpu_write(cpu_tlbstate.state, TLBSTATE_OK); BUG_ON(percpu_read(cpu_tlbstate.active_mm) != next); @@ -64,11 +122,28 @@ static inline void switch_mm(struct mm_s * tlb flush IPI delivery. We must reload CR3 * to make sure to use no freed page tables. */ + +#ifndef CONFIG_PAX_PER_CPU_PGD load_cr3(next->pgd); +#endif + load_LDT_nolock(&next->context); + +#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_PAGEEXEC) + if (!(__supported_pte_mask & _PAGE_NX)) + cpu_set(cpu, next->context.cpu_user_cs_mask); +#endif + +#if defined(CONFIG_X86_32) && (defined(CONFIG_PAX_PAGEEXEC) || defined(CONFIG_PAX_SEGMEXEC)) +#ifdef CONFIG_PAX_PAGEEXEC + if (!((next->pax_flags & MF_PAX_PAGEEXEC) && (__supported_pte_mask & _PAGE_NX))) +#endif + set_user_cs(next->context.user_cs_base, next->context.user_cs_limit, cpu); +#endif + } - } #endif + } } #define activate_mm(prev, next) \ diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/include/asm/module.h linux-2.6.36.4-pax/arch/x86/include/asm/module.h --- linux-2.6.36.4/arch/x86/include/asm/module.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/include/asm/module.h 2010-10-27 22:58:07.000000000 +0200 @@ -59,13 +59,26 @@ #error unknown processor family #endif +#ifdef CONFIG_PAX_MEMORY_UDEREF +#define MODULE_PAX_UDEREF "UDEREF " +#else +#define MODULE_PAX_UDEREF "" +#endif + #ifdef CONFIG_X86_32 # ifdef CONFIG_4KSTACKS # define MODULE_STACKSIZE "4KSTACKS " # else # define MODULE_STACKSIZE "" # endif -# define MODULE_ARCH_VERMAGIC MODULE_PROC_FAMILY MODULE_STACKSIZE +# ifdef CONFIG_PAX_KERNEXEC +# define MODULE_PAX_KERNEXEC "KERNEXEC " +# else +# define MODULE_PAX_KERNEXEC "" +# endif +# define MODULE_ARCH_VERMAGIC MODULE_PROC_FAMILY MODULE_STACKSIZE MODULE_PAX_KERNEXEC MODULE_PAX_UDEREF +#else +# define MODULE_ARCH_VERMAGIC MODULE_PAX_UDEREF #endif #endif /* _ASM_X86_MODULE_H */ diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/include/asm/page_64_types.h linux-2.6.36.4-pax/arch/x86/include/asm/page_64_types.h --- linux-2.6.36.4/arch/x86/include/asm/page_64_types.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/include/asm/page_64_types.h 2010-12-14 21:18:01.000000000 +0100 @@ -56,7 +56,7 @@ void copy_page(void *to, void *from); /* duplicated to the one in bootmem.h */ extern unsigned long max_pfn; -extern unsigned long phys_base; +extern const unsigned long phys_base; extern unsigned long __phys_addr(unsigned long); #define __phys_reloc_hide(x) (x) diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/include/asm/paravirt.h linux-2.6.36.4-pax/arch/x86/include/asm/paravirt.h --- linux-2.6.36.4/arch/x86/include/asm/paravirt.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/include/asm/paravirt.h 2010-10-27 22:58:07.000000000 +0200 @@ -720,6 +720,21 @@ static inline void __set_fixmap(unsigned pv_mmu_ops.set_fixmap(idx, phys, flags); } +#ifdef CONFIG_PAX_KERNEXEC +static inline unsigned long pax_open_kernel(void) +{ + return PVOP_CALL0(unsigned long, pv_mmu_ops.pax_open_kernel); +} + +static inline unsigned long pax_close_kernel(void) +{ + return PVOP_CALL0(unsigned long, pv_mmu_ops.pax_close_kernel); +} +#else +static inline unsigned long pax_open_kernel(void) { return 0; } +static inline unsigned long pax_close_kernel(void) { return 0; } +#endif + #if defined(CONFIG_SMP) && defined(CONFIG_PARAVIRT_SPINLOCKS) static inline int arch_spin_is_locked(struct arch_spinlock *lock) @@ -936,7 +951,7 @@ extern void default_banner(void); #define PARA_PATCH(struct, off) ((PARAVIRT_PATCH_##struct + (off)) / 4) #define PARA_SITE(ptype, clobbers, ops) _PVSITE(ptype, clobbers, ops, .long, 4) -#define PARA_INDIRECT(addr) *%cs:addr +#define PARA_INDIRECT(addr) *%ss:addr #endif #define INTERRUPT_RETURN \ @@ -1013,6 +1028,21 @@ extern void default_banner(void); PARA_SITE(PARA_PATCH(pv_cpu_ops, PV_CPU_irq_enable_sysexit), \ CLBR_NONE, \ jmp PARA_INDIRECT(pv_cpu_ops+PV_CPU_irq_enable_sysexit)) + +#define GET_CR0_INTO_RDI \ + call PARA_INDIRECT(pv_cpu_ops+PV_CPU_read_cr0); \ + mov %rax,%rdi + +#define SET_RDI_INTO_CR0 \ + call PARA_INDIRECT(pv_cpu_ops+PV_CPU_write_cr0) + +#define GET_CR3_INTO_RDI \ + call PARA_INDIRECT(pv_mmu_ops+PV_MMU_read_cr3); \ + mov %rax,%rdi + +#define SET_RDI_INTO_CR3 \ + call PARA_INDIRECT(pv_mmu_ops+PV_MMU_write_cr3) + #endif /* CONFIG_X86_32 */ #endif /* __ASSEMBLY__ */ diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/include/asm/paravirt_types.h linux-2.6.36.4-pax/arch/x86/include/asm/paravirt_types.h --- linux-2.6.36.4/arch/x86/include/asm/paravirt_types.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/include/asm/paravirt_types.h 2010-10-27 22:58:07.000000000 +0200 @@ -312,6 +312,12 @@ struct pv_mmu_ops { an mfn. We can tell which is which from the index. */ void (*set_fixmap)(unsigned /* enum fixed_addresses */ idx, phys_addr_t phys, pgprot_t flags); + +#ifdef CONFIG_PAX_KERNEXEC + unsigned long (*pax_open_kernel)(void); + unsigned long (*pax_close_kernel)(void); +#endif + }; struct arch_spinlock; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/include/asm/pci_x86.h linux-2.6.36.4-pax/arch/x86/include/asm/pci_x86.h --- linux-2.6.36.4/arch/x86/include/asm/pci_x86.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/include/asm/pci_x86.h 2010-10-27 22:58:44.000000000 +0200 @@ -92,16 +92,16 @@ extern int (*pcibios_enable_irq)(struct extern void (*pcibios_disable_irq)(struct pci_dev *dev); struct pci_raw_ops { - int (*read)(unsigned int domain, unsigned int bus, unsigned int devfn, + int (* const read)(unsigned int domain, unsigned int bus, unsigned int devfn, int reg, int len, u32 *val); - int (*write)(unsigned int domain, unsigned int bus, unsigned int devfn, + int (* const write)(unsigned int domain, unsigned int bus, unsigned int devfn, int reg, int len, u32 val); }; -extern struct pci_raw_ops *raw_pci_ops; -extern struct pci_raw_ops *raw_pci_ext_ops; +extern const struct pci_raw_ops *raw_pci_ops; +extern const struct pci_raw_ops *raw_pci_ext_ops; -extern struct pci_raw_ops pci_direct_conf1; +extern const struct pci_raw_ops pci_direct_conf1; extern bool port_cf9_safe; /* arch_initcall level */ diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/include/asm/pgalloc.h linux-2.6.36.4-pax/arch/x86/include/asm/pgalloc.h --- linux-2.6.36.4/arch/x86/include/asm/pgalloc.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/include/asm/pgalloc.h 2010-10-27 22:58:07.000000000 +0200 @@ -63,6 +63,13 @@ static inline void pmd_populate_kernel(s pmd_t *pmd, pte_t *pte) { paravirt_alloc_pte(mm, __pa(pte) >> PAGE_SHIFT); + set_pmd(pmd, __pmd(__pa(pte) | _KERNPG_TABLE)); +} + +static inline void pmd_populate_user(struct mm_struct *mm, + pmd_t *pmd, pte_t *pte) +{ + paravirt_alloc_pte(mm, __pa(pte) >> PAGE_SHIFT); set_pmd(pmd, __pmd(__pa(pte) | _PAGE_TABLE)); } diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/include/asm/pgtable-2level.h linux-2.6.36.4-pax/arch/x86/include/asm/pgtable-2level.h --- linux-2.6.36.4/arch/x86/include/asm/pgtable-2level.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/include/asm/pgtable-2level.h 2010-10-27 22:58:07.000000000 +0200 @@ -18,7 +18,9 @@ static inline void native_set_pte(pte_t static inline void native_set_pmd(pmd_t *pmdp, pmd_t pmd) { + pax_open_kernel(); *pmdp = pmd; + pax_close_kernel(); } static inline void native_set_pte_atomic(pte_t *ptep, pte_t pte) diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/include/asm/pgtable-3level.h linux-2.6.36.4-pax/arch/x86/include/asm/pgtable-3level.h --- linux-2.6.36.4/arch/x86/include/asm/pgtable-3level.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/include/asm/pgtable-3level.h 2010-10-27 22:58:07.000000000 +0200 @@ -38,12 +38,16 @@ static inline void native_set_pte_atomic static inline void native_set_pmd(pmd_t *pmdp, pmd_t pmd) { + pax_open_kernel(); set_64bit((unsigned long long *)(pmdp), native_pmd_val(pmd)); + pax_close_kernel(); } static inline void native_set_pud(pud_t *pudp, pud_t pud) { + pax_open_kernel(); set_64bit((unsigned long long *)(pudp), native_pud_val(pud)); + pax_close_kernel(); } /* diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/include/asm/pgtable.h linux-2.6.36.4-pax/arch/x86/include/asm/pgtable.h --- linux-2.6.36.4/arch/x86/include/asm/pgtable.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/include/asm/pgtable.h 2010-10-27 22:58:07.000000000 +0200 @@ -76,12 +76,51 @@ extern struct list_head pgd_list; #define arch_end_context_switch(prev) do {} while(0) +#define pax_open_kernel() native_pax_open_kernel() +#define pax_close_kernel() native_pax_close_kernel() #endif /* CONFIG_PARAVIRT */ +#define __HAVE_ARCH_PAX_OPEN_KERNEL +#define __HAVE_ARCH_PAX_CLOSE_KERNEL + +#ifdef CONFIG_PAX_KERNEXEC +static inline unsigned long native_pax_open_kernel(void) +{ + unsigned long cr0; + + preempt_disable(); + barrier(); + cr0 = read_cr0() ^ X86_CR0_WP; + BUG_ON(unlikely(cr0 & X86_CR0_WP)); + write_cr0(cr0); + return cr0 ^ X86_CR0_WP; +} + +static inline unsigned long native_pax_close_kernel(void) +{ + unsigned long cr0; + + cr0 = read_cr0() ^ X86_CR0_WP; + BUG_ON(unlikely(!(cr0 & X86_CR0_WP))); + write_cr0(cr0); + barrier(); + preempt_enable_no_resched(); + return cr0 ^ X86_CR0_WP; +} +#else +static inline unsigned long native_pax_open_kernel(void) { return 0; } +static inline unsigned long native_pax_close_kernel(void) { return 0; } +#endif + /* * The following only work if pte_present() is true. * Undefined behaviour if not.. */ +static inline int pte_user(pte_t pte) +{ + return pte_val(pte) & _PAGE_USER; +} + static inline int pte_dirty(pte_t pte) { return pte_flags(pte) & _PAGE_DIRTY; @@ -169,9 +208,29 @@ static inline pte_t pte_wrprotect(pte_t return pte_clear_flags(pte, _PAGE_RW); } +static inline pte_t pte_mkread(pte_t pte) +{ + return __pte(pte_val(pte) | _PAGE_USER); +} + static inline pte_t pte_mkexec(pte_t pte) { - return pte_clear_flags(pte, _PAGE_NX); +#ifdef CONFIG_X86_PAE + if (__supported_pte_mask & _PAGE_NX) + return pte_clear_flags(pte, _PAGE_NX); + else +#endif + return pte_set_flags(pte, _PAGE_USER); +} + +static inline pte_t pte_exprotect(pte_t pte) +{ +#ifdef CONFIG_X86_PAE + if (__supported_pte_mask & _PAGE_NX) + return pte_set_flags(pte, _PAGE_NX); + else +#endif + return pte_clear_flags(pte, _PAGE_USER); } static inline pte_t pte_mkdirty(pte_t pte) @@ -304,6 +363,15 @@ pte_t *populate_extra_pte(unsigned long #endif #ifndef __ASSEMBLY__ + +#ifdef CONFIG_PAX_PER_CPU_PGD +extern pgd_t cpu_pgd[NR_CPUS][PTRS_PER_PGD]; +static inline pgd_t *get_cpu_pgd(unsigned int cpu) +{ + return cpu_pgd[cpu]; +} +#endif + #include static inline int pte_none(pte_t pte) @@ -474,7 +542,7 @@ static inline pud_t *pud_offset(pgd_t *p static inline int pgd_bad(pgd_t pgd) { - return (pgd_flags(pgd) & ~_PAGE_USER) != _KERNPG_TABLE; + return (pgd_flags(pgd) & ~(_PAGE_USER | _PAGE_NX)) != _KERNPG_TABLE; } static inline int pgd_none(pgd_t pgd) @@ -497,7 +565,12 @@ static inline int pgd_none(pgd_t pgd) * pgd_offset() returns a (pgd_t *) * pgd_index() is used get the offset into the pgd page's array of pgd_t's; */ -#define pgd_offset(mm, address) ((mm)->pgd + pgd_index((address))) +#define pgd_offset(mm, address) ((mm)->pgd + pgd_index(address)) + +#ifdef CONFIG_PAX_PER_CPU_PGD +#define pgd_offset_cpu(cpu, address) (get_cpu_pgd(cpu) + pgd_index(address)) +#endif + /* * a shortcut which implies the use of the kernel's pgd, instead * of a process's @@ -508,6 +581,20 @@ static inline int pgd_none(pgd_t pgd) #define KERNEL_PGD_BOUNDARY pgd_index(PAGE_OFFSET) #define KERNEL_PGD_PTRS (PTRS_PER_PGD - KERNEL_PGD_BOUNDARY) +#ifdef CONFIG_X86_32 +#define USER_PGD_PTRS KERNEL_PGD_BOUNDARY +#else +#define TASK_SIZE_MAX_SHIFT CONFIG_TASK_SIZE_MAX_SHIFT +#define USER_PGD_PTRS (_AC(1,UL) << (TASK_SIZE_MAX_SHIFT - PGDIR_SHIFT)) + +#ifdef CONFIG_PAX_MEMORY_UDEREF +#define PAX_USER_SHADOW_BASE (_AC(1,UL) << TASK_SIZE_MAX_SHIFT) +#else +#define PAX_USER_SHADOW_BASE (_AC(0,UL)) +#endif + +#endif + #ifndef __ASSEMBLY__ extern int direct_gbpages; @@ -613,11 +700,23 @@ static inline void ptep_set_wrprotect(st * dst and src can be on the same page, but the range must not overlap, * and must not cross a page boundary. */ -static inline void clone_pgd_range(pgd_t *dst, pgd_t *src, int count) +static inline void clone_pgd_range(pgd_t *dst, const pgd_t *src, int count) { - memcpy(dst, src, count * sizeof(pgd_t)); + pax_open_kernel(); + while (count--) + *dst++ = *src++; + pax_close_kernel(); } +#ifdef CONFIG_PAX_PER_CPU_PGD +extern void __clone_user_pgds(pgd_t *dst, const pgd_t *src, int count); +#endif + +#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF) +extern void __shadow_user_pgds(pgd_t *dst, const pgd_t *src, int count); +#else +static inline void __shadow_user_pgds(pgd_t *dst, const pgd_t *src, int count) {} +#endif #include #endif /* __ASSEMBLY__ */ diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/include/asm/pgtable_32.h linux-2.6.36.4-pax/arch/x86/include/asm/pgtable_32.h --- linux-2.6.36.4/arch/x86/include/asm/pgtable_32.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/include/asm/pgtable_32.h 2010-10-27 22:58:07.000000000 +0200 @@ -25,9 +25,6 @@ struct mm_struct; struct vm_area_struct; -extern pgd_t swapper_pg_dir[1024]; -extern pgd_t trampoline_pg_dir[1024]; - static inline void pgtable_cache_init(void) { } static inline void check_pgt_cache(void) { } void paging_init(void); @@ -48,6 +45,12 @@ extern void set_pmd_pfn(unsigned long, u # include #endif +extern pgd_t swapper_pg_dir[PTRS_PER_PGD]; +extern pgd_t trampoline_pg_dir[PTRS_PER_PGD]; +#ifdef CONFIG_X86_PAE +extern pmd_t swapper_pm_dir[PTRS_PER_PGD][PTRS_PER_PMD]; +#endif + #if defined(CONFIG_HIGHPTE) #define __KM_PTE \ (in_nmi() ? KM_NMI_PTE : \ @@ -72,7 +75,9 @@ extern void set_pmd_pfn(unsigned long, u /* Clear a kernel PTE and flush it from the TLB */ #define kpte_clear_flush(ptep, vaddr) \ do { \ + pax_open_kernel(); \ pte_clear(&init_mm, (vaddr), (ptep)); \ + pax_close_kernel(); \ __flush_tlb_one((vaddr)); \ } while (0) @@ -84,6 +89,9 @@ do { \ #endif /* !__ASSEMBLY__ */ +#define HAVE_ARCH_UNMAPPED_AREA +#define HAVE_ARCH_UNMAPPED_AREA_TOPDOWN + /* * kern_addr_valid() is (1) for FLATMEM and (0) for * SPARSEMEM and DISCONTIGMEM diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/include/asm/pgtable_32_types.h linux-2.6.36.4-pax/arch/x86/include/asm/pgtable_32_types.h --- linux-2.6.36.4/arch/x86/include/asm/pgtable_32_types.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/include/asm/pgtable_32_types.h 2010-10-27 22:58:07.000000000 +0200 @@ -8,7 +8,7 @@ */ #ifdef CONFIG_X86_PAE # include -# define PMD_SIZE (1UL << PMD_SHIFT) +# define PMD_SIZE (_AC(1, UL) << PMD_SHIFT) # define PMD_MASK (~(PMD_SIZE - 1)) #else # include @@ -46,6 +46,19 @@ extern bool __vmalloc_start_set; /* set # define VMALLOC_END (FIXADDR_START - 2 * PAGE_SIZE) #endif +#ifdef CONFIG_PAX_KERNEXEC +#ifndef __ASSEMBLY__ +extern unsigned char MODULES_EXEC_VADDR[]; +extern unsigned char MODULES_EXEC_END[]; +#endif +#include +#define ktla_ktva(addr) (addr + LOAD_PHYSICAL_ADDR + PAGE_OFFSET) +#define ktva_ktla(addr) (addr - LOAD_PHYSICAL_ADDR - PAGE_OFFSET) +#else +#define ktla_ktva(addr) (addr) +#define ktva_ktla(addr) (addr) +#endif + #define MODULES_VADDR VMALLOC_START #define MODULES_END VMALLOC_END #define MODULES_LEN (MODULES_VADDR - MODULES_END) diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/include/asm/pgtable_64.h linux-2.6.36.4-pax/arch/x86/include/asm/pgtable_64.h --- linux-2.6.36.4/arch/x86/include/asm/pgtable_64.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/include/asm/pgtable_64.h 2010-10-27 22:58:07.000000000 +0200 @@ -16,10 +16,13 @@ extern pud_t level3_kernel_pgt[512]; extern pud_t level3_ident_pgt[512]; +extern pud_t level3_vmalloc_pgt[512]; +extern pud_t level3_vmemmap_pgt[512]; +extern pud_t level2_vmemmap_pgt[512]; extern pmd_t level2_kernel_pgt[512]; extern pmd_t level2_fixmap_pgt[512]; -extern pmd_t level2_ident_pgt[512]; -extern pgd_t init_level4_pgt[]; +extern pmd_t level2_ident_pgt[512*2]; +extern pgd_t init_level4_pgt[512]; #define swapper_pg_dir init_level4_pgt @@ -74,7 +77,9 @@ static inline pte_t native_ptep_get_and_ static inline void native_set_pmd(pmd_t *pmdp, pmd_t pmd) { + pax_open_kernel(); *pmdp = pmd; + pax_close_kernel(); } static inline void native_pmd_clear(pmd_t *pmd) @@ -94,7 +99,9 @@ static inline void native_pud_clear(pud_ static inline void native_set_pgd(pgd_t *pgdp, pgd_t pgd) { + pax_open_kernel(); *pgdp = pgd; + pax_close_kernel(); } static inline void native_pgd_clear(pgd_t *pgd) diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/include/asm/pgtable_64_types.h linux-2.6.36.4-pax/arch/x86/include/asm/pgtable_64_types.h --- linux-2.6.36.4/arch/x86/include/asm/pgtable_64_types.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/include/asm/pgtable_64_types.h 2010-10-27 22:58:07.000000000 +0200 @@ -59,5 +59,10 @@ typedef struct { pteval_t pte; } pte_t; #define MODULES_VADDR _AC(0xffffffffa0000000, UL) #define MODULES_END _AC(0xffffffffff000000, UL) #define MODULES_LEN (MODULES_END - MODULES_VADDR) +#define MODULES_EXEC_VADDR MODULES_VADDR +#define MODULES_EXEC_END MODULES_END + +#define ktla_ktva(addr) (addr) +#define ktva_ktla(addr) (addr) #endif /* _ASM_X86_PGTABLE_64_DEFS_H */ diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/include/asm/pgtable_types.h linux-2.6.36.4-pax/arch/x86/include/asm/pgtable_types.h --- linux-2.6.36.4/arch/x86/include/asm/pgtable_types.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/include/asm/pgtable_types.h 2010-10-27 22:58:07.000000000 +0200 @@ -16,12 +16,11 @@ #define _PAGE_BIT_PSE 7 /* 4 MB (or 2MB) page */ #define _PAGE_BIT_PAT 7 /* on 4KB pages */ #define _PAGE_BIT_GLOBAL 8 /* Global TLB entry PPro+ */ -#define _PAGE_BIT_UNUSED1 9 /* available for programmer */ +#define _PAGE_BIT_SPECIAL 9 /* special mappings, no associated struct page */ #define _PAGE_BIT_IOMAP 10 /* flag used to indicate IO mapping */ #define _PAGE_BIT_HIDDEN 11 /* hidden by kmemcheck */ #define _PAGE_BIT_PAT_LARGE 12 /* On 2MB or 1GB pages */ -#define _PAGE_BIT_SPECIAL _PAGE_BIT_UNUSED1 -#define _PAGE_BIT_CPA_TEST _PAGE_BIT_UNUSED1 +#define _PAGE_BIT_CPA_TEST _PAGE_BIT_SPECIAL #define _PAGE_BIT_NX 63 /* No execute: only valid after cpuid check */ /* If _PAGE_BIT_PRESENT is clear, we use these: */ @@ -39,7 +38,6 @@ #define _PAGE_DIRTY (_AT(pteval_t, 1) << _PAGE_BIT_DIRTY) #define _PAGE_PSE (_AT(pteval_t, 1) << _PAGE_BIT_PSE) #define _PAGE_GLOBAL (_AT(pteval_t, 1) << _PAGE_BIT_GLOBAL) -#define _PAGE_UNUSED1 (_AT(pteval_t, 1) << _PAGE_BIT_UNUSED1) #define _PAGE_IOMAP (_AT(pteval_t, 1) << _PAGE_BIT_IOMAP) #define _PAGE_PAT (_AT(pteval_t, 1) << _PAGE_BIT_PAT) #define _PAGE_PAT_LARGE (_AT(pteval_t, 1) << _PAGE_BIT_PAT_LARGE) @@ -55,8 +53,10 @@ #if defined(CONFIG_X86_64) || defined(CONFIG_X86_PAE) #define _PAGE_NX (_AT(pteval_t, 1) << _PAGE_BIT_NX) -#else +#elif defined(CONFIG_KMEMCHECK) #define _PAGE_NX (_AT(pteval_t, 0)) +#else +#define _PAGE_NX (_AT(pteval_t, 1) << _PAGE_BIT_HIDDEN) #endif #define _PAGE_FILE (_AT(pteval_t, 1) << _PAGE_BIT_FILE) @@ -93,6 +93,9 @@ #define PAGE_READONLY_EXEC __pgprot(_PAGE_PRESENT | _PAGE_USER | \ _PAGE_ACCESSED) +#define PAGE_READONLY_NOEXEC PAGE_READONLY +#define PAGE_SHARED_NOEXEC PAGE_SHARED + #define __PAGE_KERNEL_EXEC \ (_PAGE_PRESENT | _PAGE_RW | _PAGE_DIRTY | _PAGE_ACCESSED | _PAGE_GLOBAL) #define __PAGE_KERNEL (__PAGE_KERNEL_EXEC | _PAGE_NX) @@ -103,8 +106,8 @@ #define __PAGE_KERNEL_WC (__PAGE_KERNEL | _PAGE_CACHE_WC) #define __PAGE_KERNEL_NOCACHE (__PAGE_KERNEL | _PAGE_PCD | _PAGE_PWT) #define __PAGE_KERNEL_UC_MINUS (__PAGE_KERNEL | _PAGE_PCD) -#define __PAGE_KERNEL_VSYSCALL (__PAGE_KERNEL_RX | _PAGE_USER) -#define __PAGE_KERNEL_VSYSCALL_NOCACHE (__PAGE_KERNEL_VSYSCALL | _PAGE_PCD | _PAGE_PWT) +#define __PAGE_KERNEL_VSYSCALL (__PAGE_KERNEL_RO | _PAGE_USER) +#define __PAGE_KERNEL_VSYSCALL_NOCACHE (__PAGE_KERNEL_RO | _PAGE_PCD | _PAGE_PWT | _PAGE_USER) #define __PAGE_KERNEL_LARGE (__PAGE_KERNEL | _PAGE_PSE) #define __PAGE_KERNEL_LARGE_NOCACHE (__PAGE_KERNEL | _PAGE_CACHE_UC | _PAGE_PSE) #define __PAGE_KERNEL_LARGE_EXEC (__PAGE_KERNEL_EXEC | _PAGE_PSE) @@ -163,8 +166,8 @@ * bits are combined, this will alow user to access the high address mapped * VDSO in the presence of CONFIG_COMPAT_VDSO */ -#define PTE_IDENT_ATTR 0x003 /* PRESENT+RW */ -#define PDE_IDENT_ATTR 0x067 /* PRESENT+RW+USER+DIRTY+ACCESSED */ +#define PTE_IDENT_ATTR 0x063 /* PRESENT+RW+DIRTY+ACCESSED */ +#define PDE_IDENT_ATTR 0x063 /* PRESENT+RW+DIRTY+ACCESSED */ #define PGD_IDENT_ATTR 0x001 /* PRESENT (no other attributes) */ #endif @@ -202,7 +205,17 @@ static inline pgdval_t pgd_flags(pgd_t p { return native_pgd_val(pgd) & PTE_FLAGS_MASK; } +#endif +#if PAGETABLE_LEVELS == 3 +#include +#endif + +#if PAGETABLE_LEVELS == 2 +#include +#endif + +#ifndef __ASSEMBLY__ #if PAGETABLE_LEVELS > 3 typedef struct { pudval_t pud; } pud_t; @@ -216,8 +229,6 @@ static inline pudval_t native_pud_val(pu return pud.pud; } #else -#include - static inline pudval_t native_pud_val(pud_t pud) { return native_pgd_val(pud.pgd); @@ -237,8 +248,6 @@ static inline pmdval_t native_pmd_val(pm return pmd.pmd; } #else -#include - static inline pmdval_t native_pmd_val(pmd_t pmd) { return native_pgd_val(pmd.pud.pgd); @@ -278,7 +287,6 @@ typedef struct page *pgtable_t; extern pteval_t __supported_pte_mask; extern void set_nx(void); -extern int nx_enabled; #define pgprot_writecombine pgprot_writecombine extern pgprot_t pgprot_writecombine(pgprot_t prot); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/include/asm/processor.h linux-2.6.36.4-pax/arch/x86/include/asm/processor.h --- linux-2.6.36.4/arch/x86/include/asm/processor.h 2011-01-12 15:14:10.000000000 +0100 +++ linux-2.6.36.4-pax/arch/x86/include/asm/processor.h 2011-01-12 15:14:27.000000000 +0100 @@ -269,7 +269,7 @@ struct tss_struct { } ____cacheline_aligned; -DECLARE_PER_CPU_SHARED_ALIGNED(struct tss_struct, init_tss); +extern struct tss_struct init_tss[NR_CPUS]; /* * Save the original ist values for checking stack pointers during debugging @@ -862,8 +862,15 @@ static inline void spin_lock_prefetch(co */ #define TASK_SIZE PAGE_OFFSET #define TASK_SIZE_MAX TASK_SIZE + +#ifdef CONFIG_PAX_SEGMEXEC +#define SEGMEXEC_TASK_SIZE (TASK_SIZE / 2) +#define STACK_TOP ((current->mm->pax_flags & MF_PAX_SEGMEXEC)?SEGMEXEC_TASK_SIZE:TASK_SIZE) +#else #define STACK_TOP TASK_SIZE -#define STACK_TOP_MAX STACK_TOP +#endif + +#define STACK_TOP_MAX TASK_SIZE #define INIT_THREAD { \ .sp0 = sizeof(init_stack) + (long)&init_stack, \ @@ -880,7 +887,7 @@ static inline void spin_lock_prefetch(co */ #define INIT_TSS { \ .x86_tss = { \ - .sp0 = sizeof(init_stack) + (long)&init_stack, \ + .sp0 = sizeof(init_stack) + (long)&init_stack - 8, \ .ss0 = __KERNEL_DS, \ .ss1 = __KERNEL_CS, \ .io_bitmap_base = INVALID_IO_BITMAP_OFFSET, \ @@ -891,11 +898,7 @@ static inline void spin_lock_prefetch(co extern unsigned long thread_saved_pc(struct task_struct *tsk); #define THREAD_SIZE_LONGS (THREAD_SIZE/sizeof(unsigned long)) -#define KSTK_TOP(info) \ -({ \ - unsigned long *__ptr = (unsigned long *)(info); \ - (unsigned long)(&__ptr[THREAD_SIZE_LONGS]); \ -}) +#define KSTK_TOP(info) ((info)->task.thread.sp0) /* * The below -8 is to reserve 8 bytes on top of the ring0 stack. @@ -910,7 +913,7 @@ extern unsigned long thread_saved_pc(str #define task_pt_regs(task) \ ({ \ struct pt_regs *__regs__; \ - __regs__ = (struct pt_regs *)(KSTK_TOP(task_stack_page(task))-8); \ + __regs__ = (struct pt_regs *)((task)->thread.sp0); \ __regs__ - 1; \ }) @@ -920,13 +923,13 @@ extern unsigned long thread_saved_pc(str /* * User space process size. 47bits minus one guard page. */ -#define TASK_SIZE_MAX ((1UL << 47) - PAGE_SIZE) +#define TASK_SIZE_MAX ((1UL << TASK_SIZE_MAX_SHIFT) - PAGE_SIZE) /* This decides where the kernel will search for a free chunk of vm * space during mmap's. */ #define IA32_PAGE_OFFSET ((current->personality & ADDR_LIMIT_3GB) ? \ - 0xc0000000 : 0xFFFFe000) + 0xc0000000 : 0xFFFFf000) #define TASK_SIZE (test_thread_flag(TIF_IA32) ? \ IA32_PAGE_OFFSET : TASK_SIZE_MAX) @@ -963,6 +966,10 @@ extern void start_thread(struct pt_regs */ #define TASK_UNMAPPED_BASE (PAGE_ALIGN(TASK_SIZE / 3)) +#ifdef CONFIG_PAX_SEGMEXEC +#define SEGMEXEC_TASK_UNMAPPED_BASE (PAGE_ALIGN(SEGMEXEC_TASK_SIZE / 3)) +#endif + #define KSTK_EIP(task) (task_pt_regs(task)->ip) /* Get/set a process' ability to use the timestamp counter instruction */ diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/include/asm/ptrace.h linux-2.6.36.4-pax/arch/x86/include/asm/ptrace.h --- linux-2.6.36.4/arch/x86/include/asm/ptrace.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/include/asm/ptrace.h 2010-10-27 22:58:07.000000000 +0200 @@ -152,28 +152,29 @@ static inline unsigned long regs_return_ } /* - * user_mode_vm(regs) determines whether a register set came from user mode. + * user_mode(regs) determines whether a register set came from user mode. * This is true if V8086 mode was enabled OR if the register set was from * protected mode with RPL-3 CS value. This tricky test checks that with * one comparison. Many places in the kernel can bypass this full check - * if they have already ruled out V8086 mode, so user_mode(regs) can be used. + * if they have already ruled out V8086 mode, so user_mode_novm(regs) can + * be used. */ -static inline int user_mode(struct pt_regs *regs) +static inline int user_mode_novm(struct pt_regs *regs) { #ifdef CONFIG_X86_32 return (regs->cs & SEGMENT_RPL_MASK) == USER_RPL; #else - return !!(regs->cs & 3); + return !!(regs->cs & SEGMENT_RPL_MASK); #endif } -static inline int user_mode_vm(struct pt_regs *regs) +static inline int user_mode(struct pt_regs *regs) { #ifdef CONFIG_X86_32 return ((regs->cs & SEGMENT_RPL_MASK) | (regs->flags & X86_VM_MASK)) >= USER_RPL; #else - return user_mode(regs); + return user_mode_novm(regs); #endif } diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/include/asm/reboot.h linux-2.6.36.4-pax/arch/x86/include/asm/reboot.h --- linux-2.6.36.4/arch/x86/include/asm/reboot.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/include/asm/reboot.h 2010-10-27 22:58:07.000000000 +0200 @@ -18,7 +18,7 @@ extern struct machine_ops machine_ops; void native_machine_crash_shutdown(struct pt_regs *regs); void native_machine_shutdown(void); -void machine_real_restart(const unsigned char *code, int length); +void machine_real_restart(const unsigned char *code, unsigned int length); typedef void (*nmi_shootdown_cb)(int, struct die_args*); void nmi_shootdown_cpus(nmi_shootdown_cb callback); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/include/asm/rwsem.h linux-2.6.36.4-pax/arch/x86/include/asm/rwsem.h --- linux-2.6.36.4/arch/x86/include/asm/rwsem.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/include/asm/rwsem.h 2010-12-30 16:30:17.000000000 +0100 @@ -118,6 +118,14 @@ static inline void __down_read(struct rw { asm volatile("# beginning down_read\n\t" LOCK_PREFIX _ASM_INC "(%1)\n\t" + +#ifdef CONFIG_PAX_REFCOUNT + "jno 0f\n" + LOCK_PREFIX _ASM_DEC "(%1)\n" + "int $4\n0:\n" + _ASM_EXTABLE(0b, 0b) +#endif + /* adds 0x00000001 */ " jns 1f\n" " call call_rwsem_down_read_failed\n" @@ -139,6 +147,14 @@ static inline int __down_read_trylock(st "1:\n\t" " mov %1,%2\n\t" " add %3,%2\n\t" + +#ifdef CONFIG_PAX_REFCOUNT + "jno 0f\n" + "sub %3,%2\n" + "int $4\n0:\n" + _ASM_EXTABLE(0b, 0b) +#endif + " jle 2f\n\t" LOCK_PREFIX " cmpxchg %2,%0\n\t" " jnz 1b\n\t" @@ -158,6 +174,14 @@ static inline void __down_write_nested(s rwsem_count_t tmp; asm volatile("# beginning down_write\n\t" LOCK_PREFIX " xadd %1,(%2)\n\t" + +#ifdef CONFIG_PAX_REFCOUNT + "jno 0f\n" + "mov %1,(%2)\n" + "int $4\n0:\n" + _ASM_EXTABLE(0b, 0b) +#endif + /* adds 0xffff0001, returns the old value */ " test %1,%1\n\t" /* was the count 0 before? */ @@ -196,6 +220,14 @@ static inline void __up_read(struct rw_s rwsem_count_t tmp; asm volatile("# beginning __up_read\n\t" LOCK_PREFIX " xadd %1,(%2)\n\t" + +#ifdef CONFIG_PAX_REFCOUNT + "jno 0f\n" + "mov %1,(%2)\n" + "int $4\n0:\n" + _ASM_EXTABLE(0b, 0b) +#endif + /* subtracts 1, returns the old value */ " jns 1f\n\t" " call call_rwsem_wake\n" /* expects old value in %edx */ @@ -214,6 +246,14 @@ static inline void __up_write(struct rw_ rwsem_count_t tmp; asm volatile("# beginning __up_write\n\t" LOCK_PREFIX " xadd %1,(%2)\n\t" + +#ifdef CONFIG_PAX_REFCOUNT + "jno 0f\n" + "mov %1,(%2)\n" + "int $4\n0:\n" + _ASM_EXTABLE(0b, 0b) +#endif + /* subtracts 0xffff0001, returns the old value */ " jns 1f\n\t" " call call_rwsem_wake\n" /* expects old value in %edx */ @@ -231,6 +271,14 @@ static inline void __downgrade_write(str { asm volatile("# beginning __downgrade_write\n\t" LOCK_PREFIX _ASM_ADD "%2,(%1)\n\t" + +#ifdef CONFIG_PAX_REFCOUNT + "jno 0f\n" + LOCK_PREFIX _ASM_SUB "%2,(%1)\n" + "int $4\n0:\n" + _ASM_EXTABLE(0b, 0b) +#endif + /* * transitions 0xZZZZ0001 -> 0xYYYY0001 (i386) * 0xZZZZZZZZ00000001 -> 0xYYYYYYYY00000001 (x86_64) @@ -250,7 +298,15 @@ static inline void __downgrade_write(str static inline void rwsem_atomic_add(rwsem_count_t delta, struct rw_semaphore *sem) { - asm volatile(LOCK_PREFIX _ASM_ADD "%1,%0" + asm volatile(LOCK_PREFIX _ASM_ADD "%1,%0\n" + +#ifdef CONFIG_PAX_REFCOUNT + "jno 0f\n" + LOCK_PREFIX _ASM_SUB "%1,%0\n" + "int $4\n0:\n" + _ASM_EXTABLE(0b, 0b) +#endif + : "+m" (sem->count) : "er" (delta)); } @@ -263,7 +319,15 @@ static inline rwsem_count_t rwsem_atomic { rwsem_count_t tmp = delta; - asm volatile(LOCK_PREFIX "xadd %0,%1" + asm volatile(LOCK_PREFIX "xadd %0,%1\n" + +#ifdef CONFIG_PAX_REFCOUNT + "jno 0f\n" + "mov %0,%1\n" + "int $4\n0:\n" + _ASM_EXTABLE(0b, 0b) +#endif + : "+r" (tmp), "+m" (sem->count) : : "memory"); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/include/asm/segment.h linux-2.6.36.4-pax/arch/x86/include/asm/segment.h --- linux-2.6.36.4/arch/x86/include/asm/segment.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/include/asm/segment.h 2010-10-27 22:58:07.000000000 +0200 @@ -62,8 +62,8 @@ * 26 - ESPFIX small SS * 27 - per-cpu [ offset to per-cpu data area ] * 28 - stack_canary-20 [ for stack protector ] - * 29 - unused - * 30 - unused + * 29 - PCI BIOS CS + * 30 - PCI BIOS DS * 31 - TSS for double fault handler */ #define GDT_ENTRY_TLS_MIN 6 @@ -77,6 +77,8 @@ #define GDT_ENTRY_KERNEL_CS (GDT_ENTRY_KERNEL_BASE + 0) +#define GDT_ENTRY_KERNEXEC_KERNEL_CS (4) + #define GDT_ENTRY_KERNEL_DS (GDT_ENTRY_KERNEL_BASE + 1) #define GDT_ENTRY_TSS (GDT_ENTRY_KERNEL_BASE + 4) @@ -88,7 +90,7 @@ #define GDT_ENTRY_ESPFIX_SS (GDT_ENTRY_KERNEL_BASE + 14) #define __ESPFIX_SS (GDT_ENTRY_ESPFIX_SS * 8) -#define GDT_ENTRY_PERCPU (GDT_ENTRY_KERNEL_BASE + 15) +#define GDT_ENTRY_PERCPU (GDT_ENTRY_KERNEL_BASE + 15) #ifdef CONFIG_SMP #define __KERNEL_PERCPU (GDT_ENTRY_PERCPU * 8) #else @@ -102,6 +104,12 @@ #define __KERNEL_STACK_CANARY 0 #endif +#define GDT_ENTRY_PCIBIOS_CS (GDT_ENTRY_KERNEL_BASE + 17) +#define __PCIBIOS_CS (GDT_ENTRY_PCIBIOS_CS * 8) + +#define GDT_ENTRY_PCIBIOS_DS (GDT_ENTRY_KERNEL_BASE + 18) +#define __PCIBIOS_DS (GDT_ENTRY_PCIBIOS_DS * 8) + #define GDT_ENTRY_DOUBLEFAULT_TSS 31 /* @@ -139,7 +147,7 @@ */ /* Matches PNP_CS32 and PNP_CS16 (they must be consecutive) */ -#define SEGMENT_IS_PNP_CODE(x) (((x) & 0xf4) == GDT_ENTRY_PNPBIOS_BASE * 8) +#define SEGMENT_IS_PNP_CODE(x) (((x) & 0xFFFCU) == PNP_CS32 || ((x) & 0xFFFCU) == PNP_CS16) #else @@ -163,6 +171,8 @@ #define __USER32_CS (GDT_ENTRY_DEFAULT_USER32_CS * 8 + 3) #define __USER32_DS __USER_DS +#define GDT_ENTRY_KERNEXEC_KERNEL_CS 7 + #define GDT_ENTRY_TSS 8 /* needs two entries */ #define GDT_ENTRY_LDT 10 /* needs two entries */ #define GDT_ENTRY_TLS_MIN 12 @@ -183,6 +193,7 @@ #endif #define __KERNEL_CS (GDT_ENTRY_KERNEL_CS * 8) +#define __KERNEXEC_KERNEL_CS (GDT_ENTRY_KERNEXEC_KERNEL_CS * 8) #define __KERNEL_DS (GDT_ENTRY_KERNEL_DS * 8) #define __USER_DS (GDT_ENTRY_DEFAULT_USER_DS* 8 + 3) #define __USER_CS (GDT_ENTRY_DEFAULT_USER_CS* 8 + 3) diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/include/asm/smp.h linux-2.6.36.4-pax/arch/x86/include/asm/smp.h --- linux-2.6.36.4/arch/x86/include/asm/smp.h 2010-12-14 21:09:00.000000000 +0100 +++ linux-2.6.36.4-pax/arch/x86/include/asm/smp.h 2010-12-14 21:09:08.000000000 +0100 @@ -24,7 +24,7 @@ extern unsigned int num_processors; DECLARE_PER_CPU(cpumask_var_t, cpu_sibling_map); DECLARE_PER_CPU(cpumask_var_t, cpu_core_map); DECLARE_PER_CPU(u16, cpu_llc_id); -DECLARE_PER_CPU(int, cpu_number); +DECLARE_PER_CPU(unsigned int, cpu_number); static inline struct cpumask *cpu_sibling_mask(int cpu) { diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/include/asm/spinlock.h linux-2.6.36.4-pax/arch/x86/include/asm/spinlock.h --- linux-2.6.36.4/arch/x86/include/asm/spinlock.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/include/asm/spinlock.h 2010-12-30 16:25:05.000000000 +0100 @@ -249,6 +249,14 @@ static inline int arch_write_can_lock(ar static inline void arch_read_lock(arch_rwlock_t *rw) { asm volatile(LOCK_PREFIX " subl $1,(%0)\n\t" + +#ifdef CONFIG_PAX_REFCOUNT + "jno 0f\n" + LOCK_PREFIX " addl $1,(%0)\n" + "int $4\n0:\n" + _ASM_EXTABLE(0b, 0b) +#endif + "jns 1f\n" "call __read_lock_failed\n\t" "1:\n" @@ -258,6 +266,14 @@ static inline void arch_read_lock(arch_r static inline void arch_write_lock(arch_rwlock_t *rw) { asm volatile(LOCK_PREFIX " subl %1,(%0)\n\t" + +#ifdef CONFIG_PAX_REFCOUNT + "jno 0f\n" + LOCK_PREFIX " addl %1,(%0)\n" + "int $4\n0:\n" + _ASM_EXTABLE(0b, 0b) +#endif + "jz 1f\n" "call __write_lock_failed\n\t" "1:\n" @@ -286,12 +302,29 @@ static inline int arch_write_trylock(arc static inline void arch_read_unlock(arch_rwlock_t *rw) { - asm volatile(LOCK_PREFIX "incl %0" :"+m" (rw->lock) : : "memory"); + asm volatile(LOCK_PREFIX "incl %0\n" + +#ifdef CONFIG_PAX_REFCOUNT + "jno 0f\n" + LOCK_PREFIX "decl %0\n" + "int $4\n0:\n" + _ASM_EXTABLE(0b, 0b) +#endif + + :"+m" (rw->lock) : : "memory"); } static inline void arch_write_unlock(arch_rwlock_t *rw) { - asm volatile(LOCK_PREFIX "addl %1, %0" + asm volatile(LOCK_PREFIX "addl %1, %0\n" + +#ifdef CONFIG_PAX_REFCOUNT + "jno 0f\n" + LOCK_PREFIX "subl %1, %0\n" + "int $4\n0:\n" + _ASM_EXTABLE(0b, 0b) +#endif + : "+m" (rw->lock) : "i" (RW_LOCK_BIAS) : "memory"); } diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/include/asm/stackprotector.h linux-2.6.36.4-pax/arch/x86/include/asm/stackprotector.h --- linux-2.6.36.4/arch/x86/include/asm/stackprotector.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/include/asm/stackprotector.h 2010-12-15 11:04:04.000000000 +0100 @@ -113,7 +113,7 @@ static inline void setup_stack_canary_se static inline void load_stack_canary_segment(void) { -#ifdef CONFIG_X86_32 +#if defined(CONFIG_X86_32) && !defined(CONFIG_PAX_MEMORY_UDEREF) asm volatile ("mov %0, %%gs" : : "r" (0)); #endif } diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/include/asm/system.h linux-2.6.36.4-pax/arch/x86/include/asm/system.h --- linux-2.6.36.4/arch/x86/include/asm/system.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/include/asm/system.h 2010-10-27 22:58:07.000000000 +0200 @@ -202,7 +202,7 @@ static inline unsigned long get_limit(un { unsigned long __limit; asm("lsll %1,%0" : "=r" (__limit) : "r" (segment)); - return __limit + 1; + return __limit; } static inline void native_clts(void) @@ -342,7 +342,7 @@ void enable_hlt(void); void cpu_idle_wait(void); -extern unsigned long arch_align_stack(unsigned long sp); +#define arch_align_stack(x) ((x) & ~0xfUL) extern void free_init_pages(char *what, unsigned long begin, unsigned long end); void default_idle(void); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/include/asm/uaccess.h linux-2.6.36.4-pax/arch/x86/include/asm/uaccess.h --- linux-2.6.36.4/arch/x86/include/asm/uaccess.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/include/asm/uaccess.h 2011-03-07 20:19:06.000000000 +0100 @@ -8,12 +8,15 @@ #include #include #include +#include #include #include #define VERIFY_READ 0 #define VERIFY_WRITE 1 +extern void check_object_size(const void *ptr, unsigned long n, bool to); + /* * The fs value determines whether argument validity checking should be * performed or not. If get_fs() == USER_DS, checking is performed, with @@ -29,7 +32,12 @@ #define get_ds() (KERNEL_DS) #define get_fs() (current_thread_info()->addr_limit) +#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_MEMORY_UDEREF) +void __set_fs(mm_segment_t x); +void set_fs(mm_segment_t x); +#else #define set_fs(x) (current_thread_info()->addr_limit = (x)) +#endif #define segment_eq(a, b) ((a).seg == (b).seg) @@ -77,7 +85,33 @@ * checks that the pointer is in the user space range - after calling * this function, memory access functions may still return -EFAULT. */ -#define access_ok(type, addr, size) (likely(__range_not_ok(addr, size) == 0)) +#define __access_ok(type, addr, size) (likely(__range_not_ok(addr, size) == 0)) +#define access_ok(type, addr, size) \ +({ \ + long __size = size; \ + unsigned long __addr = (unsigned long)addr; \ + unsigned long __addr_ao = __addr & PAGE_MASK; \ + unsigned long __end_ao = __addr + __size - 1; \ + bool __ret_ao = __range_not_ok(__addr, __size) == 0; \ + if (__ret_ao && unlikely((__end_ao ^ __addr_ao) & PAGE_MASK)) { \ + while(__addr_ao <= __end_ao) { \ + char __c_ao; \ + __addr_ao += PAGE_SIZE; \ + if (__size > PAGE_SIZE) \ + cond_resched(); \ + if (__get_user(__c_ao, (char __user *)__addr)) \ + break; \ + if (type != VERIFY_WRITE) { \ + __addr = __addr_ao; \ + continue; \ + } \ + if (__put_user(__c_ao, (char __user *)__addr)) \ + break; \ + __addr = __addr_ao; \ + } \ + } \ + __ret_ao; \ +}) /* * The exception table consists of pairs of addresses: the first is the @@ -183,12 +217,20 @@ extern int __get_user_bad(void); asm volatile("call __put_user_" #size : "=a" (__ret_pu) \ : "0" ((typeof(*(ptr)))(x)), "c" (ptr) : "ebx") - +#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_MEMORY_UDEREF) +#define __copyuser_seg "gs;" +#define __COPYUSER_SET_ES "pushl %%gs; popl %%es\n" +#define __COPYUSER_RESTORE_ES "pushl %%ss; popl %%es\n" +#else +#define __copyuser_seg +#define __COPYUSER_SET_ES +#define __COPYUSER_RESTORE_ES +#endif #ifdef CONFIG_X86_32 #define __put_user_asm_u64(x, addr, err, errret) \ - asm volatile("1: movl %%eax,0(%2)\n" \ - "2: movl %%edx,4(%2)\n" \ + asm volatile("1: "__copyuser_seg"movl %%eax,0(%2)\n" \ + "2: "__copyuser_seg"movl %%edx,4(%2)\n" \ "3:\n" \ ".section .fixup,\"ax\"\n" \ "4: movl %3,%0\n" \ @@ -200,8 +242,8 @@ extern int __get_user_bad(void); : "A" (x), "r" (addr), "i" (errret), "0" (err)) #define __put_user_asm_ex_u64(x, addr) \ - asm volatile("1: movl %%eax,0(%1)\n" \ - "2: movl %%edx,4(%1)\n" \ + asm volatile("1: "__copyuser_seg"movl %%eax,0(%1)\n" \ + "2: "__copyuser_seg"movl %%edx,4(%1)\n" \ "3:\n" \ _ASM_EXTABLE(1b, 2b - 1b) \ _ASM_EXTABLE(2b, 3b - 2b) \ @@ -374,7 +416,7 @@ do { \ } while (0) #define __get_user_asm(x, addr, err, itype, rtype, ltype, errret) \ - asm volatile("1: mov"itype" %2,%"rtype"1\n" \ + asm volatile("1: "__copyuser_seg"mov"itype" %2,%"rtype"1\n"\ "2:\n" \ ".section .fixup,\"ax\"\n" \ "3: mov %3,%0\n" \ @@ -382,7 +424,7 @@ do { \ " jmp 2b\n" \ ".previous\n" \ _ASM_EXTABLE(1b, 3b) \ - : "=r" (err), ltype(x) \ + : "=r" (err), ltype (x) \ : "m" (__m(addr)), "i" (errret), "0" (err)) #define __get_user_size_ex(x, ptr, size) \ @@ -407,7 +449,7 @@ do { \ } while (0) #define __get_user_asm_ex(x, addr, itype, rtype, ltype) \ - asm volatile("1: mov"itype" %1,%"rtype"0\n" \ + asm volatile("1: "__copyuser_seg"mov"itype" %1,%"rtype"0\n"\ "2:\n" \ _ASM_EXTABLE(1b, 2b - 1b) \ : ltype(x) : "m" (__m(addr))) @@ -424,13 +466,24 @@ do { \ int __gu_err; \ unsigned long __gu_val; \ __get_user_size(__gu_val, (ptr), (size), __gu_err, -EFAULT); \ - (x) = (__force __typeof__(*(ptr)))__gu_val; \ + (x) = (__typeof__(*(ptr)))__gu_val; \ __gu_err; \ }) /* FIXME: this hack is definitely wrong -AK */ struct __large_struct { unsigned long buf[100]; }; -#define __m(x) (*(struct __large_struct __user *)(x)) +#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF) +#define ____m(x) \ +({ \ + unsigned long ____x = (unsigned long)(x); \ + if (____x < PAX_USER_SHADOW_BASE) \ + ____x += PAX_USER_SHADOW_BASE; \ + (void __user *)____x; \ +}) +#else +#define ____m(x) (x) +#endif +#define __m(x) (*(struct __large_struct __user *)____m(x)) /* * Tell gcc we read from memory instead of writing: this is because @@ -438,7 +491,7 @@ struct __large_struct { unsigned long bu * aliasing issues. */ #define __put_user_asm(x, addr, err, itype, rtype, ltype, errret) \ - asm volatile("1: mov"itype" %"rtype"1,%2\n" \ + asm volatile("1: "__copyuser_seg"mov"itype" %"rtype"1,%2\n"\ "2:\n" \ ".section .fixup,\"ax\"\n" \ "3: mov %3,%0\n" \ @@ -446,10 +499,10 @@ struct __large_struct { unsigned long bu ".previous\n" \ _ASM_EXTABLE(1b, 3b) \ : "=r"(err) \ - : ltype(x), "m" (__m(addr)), "i" (errret), "0" (err)) + : ltype (x), "m" (__m(addr)), "i" (errret), "0" (err)) #define __put_user_asm_ex(x, addr, itype, rtype, ltype) \ - asm volatile("1: mov"itype" %"rtype"0,%1\n" \ + asm volatile("1: "__copyuser_seg"mov"itype" %"rtype"0,%1\n"\ "2:\n" \ _ASM_EXTABLE(1b, 2b - 1b) \ : : ltype(x), "m" (__m(addr))) @@ -488,8 +541,12 @@ struct __large_struct { unsigned long bu * On error, the variable @x is set to zero. */ +#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF) +#define __get_user(x, ptr) get_user((x), (ptr)) +#else #define __get_user(x, ptr) \ __get_user_nocheck((x), (ptr), sizeof(*(ptr))) +#endif /** * __put_user: - Write a simple value into user space, with less checking. @@ -511,8 +568,12 @@ struct __large_struct { unsigned long bu * Returns zero on success, or -EFAULT on error. */ +#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF) +#define __put_user(x, ptr) put_user((x), (ptr)) +#else #define __put_user(x, ptr) \ __put_user_nocheck((__typeof__(*(ptr)))(x), (ptr), sizeof(*(ptr))) +#endif #define __get_user_unaligned __get_user #define __put_user_unaligned __put_user @@ -530,7 +591,7 @@ struct __large_struct { unsigned long bu #define get_user_ex(x, ptr) do { \ unsigned long __gue_val; \ __get_user_size_ex((__gue_val), (ptr), (sizeof(*(ptr)))); \ - (x) = (__force __typeof__(*(ptr)))__gue_val; \ + (x) = (__typeof__(*(ptr)))__gue_val; \ } while (0) #ifdef CONFIG_X86_WP_WORKS_OK @@ -567,6 +628,7 @@ extern struct movsl_mask { #define ARCH_HAS_NOCACHE_UACCESS 1 +#define ARCH_HAS_SORT_EXTABLE #ifdef CONFIG_X86_32 # include "uaccess_32.h" #else diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/include/asm/uaccess_32.h linux-2.6.36.4-pax/arch/x86/include/asm/uaccess_32.h --- linux-2.6.36.4/arch/x86/include/asm/uaccess_32.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/include/asm/uaccess_32.h 2010-10-27 22:58:07.000000000 +0200 @@ -44,6 +44,9 @@ unsigned long __must_check __copy_from_u static __always_inline unsigned long __must_check __copy_to_user_inatomic(void __user *to, const void *from, unsigned long n) { + if ((long)n < 0) + return n; + if (__builtin_constant_p(n)) { unsigned long ret; @@ -62,6 +65,8 @@ __copy_to_user_inatomic(void __user *to, return ret; } } + if (!__builtin_constant_p(n)) + check_object_size(from, n, true); return __copy_to_user_ll(to, from, n); } @@ -89,6 +94,9 @@ __copy_to_user(void __user *to, const vo static __always_inline unsigned long __copy_from_user_inatomic(void *to, const void __user *from, unsigned long n) { + if ((long)n < 0) + return n; + /* Avoid zeroing the tail if the copy fails.. * If 'n' is constant and 1, 2, or 4, we do still zero on a failure, * but as the zeroing behaviour is only significant when n is not @@ -138,6 +146,10 @@ static __always_inline unsigned long __copy_from_user(void *to, const void __user *from, unsigned long n) { might_fault(); + + if ((long)n < 0) + return n; + if (__builtin_constant_p(n)) { unsigned long ret; @@ -153,6 +165,8 @@ __copy_from_user(void *to, const void __ return ret; } } + if (!__builtin_constant_p(n)) + check_object_size(to, n, false); return __copy_from_user_ll(to, from, n); } @@ -160,6 +174,10 @@ static __always_inline unsigned long __c const void __user *from, unsigned long n) { might_fault(); + + if ((long)n < 0) + return n; + if (__builtin_constant_p(n)) { unsigned long ret; @@ -182,15 +200,19 @@ static __always_inline unsigned long __copy_from_user_inatomic_nocache(void *to, const void __user *from, unsigned long n) { - return __copy_from_user_ll_nocache_nozero(to, from, n); -} + if ((long)n < 0) + return n; -unsigned long __must_check copy_to_user(void __user *to, - const void *from, unsigned long n); -unsigned long __must_check _copy_from_user(void *to, - const void __user *from, - unsigned long n); + return __copy_from_user_ll_nocache_nozero(to, from, n); +} +extern void copy_to_user_overflow(void) +#ifdef CONFIG_DEBUG_STRICT_USER_COPY_CHECKS + __compiletime_error("copy_to_user() buffer size is not provably correct") +#else + __compiletime_warning("copy_to_user() buffer size is not provably correct") +#endif +; extern void copy_from_user_overflow(void) #ifdef CONFIG_DEBUG_STRICT_USER_COPY_CHECKS @@ -200,17 +222,61 @@ extern void copy_from_user_overflow(void #endif ; -static inline unsigned long __must_check copy_from_user(void *to, - const void __user *from, - unsigned long n) +/** + * copy_to_user: - Copy a block of data into user space. + * @to: Destination address, in user space. + * @from: Source address, in kernel space. + * @n: Number of bytes to copy. + * + * Context: User context only. This function may sleep. + * + * Copy data from kernel space to user space. + * + * Returns number of bytes that could not be copied. + * On success, this will be zero. + */ +static inline unsigned long __must_check +copy_to_user(void __user *to, const void *from, unsigned long n) +{ + int sz = __compiletime_object_size(from); + + if (unlikely(sz != -1 && sz < n)) + copy_to_user_overflow(); + else if (access_ok(VERIFY_WRITE, to, n)) + n = __copy_to_user(to, from, n); + return n; +} + +/** + * copy_from_user: - Copy a block of data from user space. + * @to: Destination address, in kernel space. + * @from: Source address, in user space. + * @n: Number of bytes to copy. + * + * Context: User context only. This function may sleep. + * + * Copy data from user space to kernel space. + * + * Returns number of bytes that could not be copied. + * On success, this will be zero. + * + * If some data could not be copied, this function will pad the copied + * data to the requested size using zero bytes. + */ +static inline unsigned long __must_check +copy_from_user(void *to, const void __user *from, unsigned long n) { int sz = __compiletime_object_size(to); - if (likely(sz == -1 || sz >= n)) - n = _copy_from_user(to, from, n); - else + if (unlikely(sz != -1 && sz < n)) copy_from_user_overflow(); - + else if (access_ok(VERIFY_READ, from, n)) + n = __copy_from_user(to, from, n); + else if ((long)n > 0) { + if (!__builtin_constant_p(n)) + check_object_size(to, n, false); + memset(to, 0, n); + } return n; } diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/include/asm/uaccess_64.h linux-2.6.36.4-pax/arch/x86/include/asm/uaccess_64.h --- linux-2.6.36.4/arch/x86/include/asm/uaccess_64.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/include/asm/uaccess_64.h 2010-12-30 13:20:23.000000000 +0100 @@ -11,6 +11,9 @@ #include #include #include +#include + +#define set_fs(x) (current_thread_info()->addr_limit = (x)) /* * Copy To/From Userspace @@ -37,26 +40,26 @@ copy_user_generic(void *to, const void * return ret; } -__must_check unsigned long -_copy_to_user(void __user *to, const void *from, unsigned len); -__must_check unsigned long -_copy_from_user(void *to, const void __user *from, unsigned len); +static __always_inline __must_check unsigned long +__copy_to_user(void __user *to, const void *from, unsigned len); +static __always_inline __must_check unsigned long +__copy_from_user(void *to, const void __user *from, unsigned len); __must_check unsigned long copy_in_user(void __user *to, const void __user *from, unsigned len); static inline unsigned long __must_check copy_from_user(void *to, const void __user *from, - unsigned long n) + unsigned n) { - int sz = __compiletime_object_size(to); - might_fault(); - if (likely(sz == -1 || sz >= n)) - n = _copy_from_user(to, from, n); -#ifdef CONFIG_DEBUG_VM - else - WARN(1, "Buffer overflow detected!\n"); -#endif + + if (access_ok(VERIFY_READ, from, n)) + n = __copy_from_user(to, from, n); + else if ((int)n > 0) { + if (!__builtin_constant_p(n)) + check_object_size(to, n, false); + memset(to, 0, n); + } return n; } @@ -65,110 +68,174 @@ int copy_to_user(void __user *dst, const { might_fault(); - return _copy_to_user(dst, src, size); + if (access_ok(VERIFY_WRITE, dst, size)) + size = __copy_to_user(dst, src, size); + return size; } static __always_inline __must_check -int __copy_from_user(void *dst, const void __user *src, unsigned size) +unsigned long __copy_from_user(void *dst, const void __user *src, unsigned size) { - int ret = 0; + int sz = __compiletime_object_size(dst); + unsigned ret = 0; might_fault(); - if (!__builtin_constant_p(size)) - return copy_user_generic(dst, (__force void *)src, size); + + if ((int)size < 0) + return size; + +#ifdef CONFIG_PAX_MEMORY_UDEREF + if (!__access_ok(VERIFY_READ, src, size)) + return size; +#endif + + if (unlikely(sz != -1 && sz < size)) { +#ifdef CONFIG_DEBUG_VM + WARN(1, "Buffer overflow detected!\n"); +#endif + return size; + } + + if (!__builtin_constant_p(size)) { + check_object_size(dst, size, false); + if ((unsigned long)src < PAX_USER_SHADOW_BASE) + src += PAX_USER_SHADOW_BASE; + return copy_user_generic(dst, (__force const void *)src, size); + } switch (size) { - case 1:__get_user_asm(*(u8 *)dst, (u8 __user *)src, + case 1:__get_user_asm(*(u8 *)dst, (const u8 __user *)src, ret, "b", "b", "=q", 1); return ret; - case 2:__get_user_asm(*(u16 *)dst, (u16 __user *)src, + case 2:__get_user_asm(*(u16 *)dst, (const u16 __user *)src, ret, "w", "w", "=r", 2); return ret; - case 4:__get_user_asm(*(u32 *)dst, (u32 __user *)src, + case 4:__get_user_asm(*(u32 *)dst, (const u32 __user *)src, ret, "l", "k", "=r", 4); return ret; - case 8:__get_user_asm(*(u64 *)dst, (u64 __user *)src, + case 8:__get_user_asm(*(u64 *)dst, (const u64 __user *)src, ret, "q", "", "=r", 8); return ret; case 10: - __get_user_asm(*(u64 *)dst, (u64 __user *)src, + __get_user_asm(*(u64 *)dst, (const u64 __user *)src, ret, "q", "", "=r", 10); if (unlikely(ret)) return ret; __get_user_asm(*(u16 *)(8 + (char *)dst), - (u16 __user *)(8 + (char __user *)src), + (const u16 __user *)(8 + (const char __user *)src), ret, "w", "w", "=r", 2); return ret; case 16: - __get_user_asm(*(u64 *)dst, (u64 __user *)src, + __get_user_asm(*(u64 *)dst, (const u64 __user *)src, ret, "q", "", "=r", 16); if (unlikely(ret)) return ret; __get_user_asm(*(u64 *)(8 + (char *)dst), - (u64 __user *)(8 + (char __user *)src), + (const u64 __user *)(8 + (const char __user *)src), ret, "q", "", "=r", 8); return ret; default: - return copy_user_generic(dst, (__force void *)src, size); + if ((unsigned long)src < PAX_USER_SHADOW_BASE) + src += PAX_USER_SHADOW_BASE; + return copy_user_generic(dst, (__force const void *)src, size); } } static __always_inline __must_check -int __copy_to_user(void __user *dst, const void *src, unsigned size) +unsigned long __copy_to_user(void __user *dst, const void *src, unsigned size) { - int ret = 0; + int sz = __compiletime_object_size(src); + unsigned ret = 0; might_fault(); - if (!__builtin_constant_p(size)) + + if ((int)size < 0) + return size; + +#ifdef CONFIG_PAX_MEMORY_UDEREF + if (!__access_ok(VERIFY_WRITE, dst, size)) + return size; +#endif + + if (unlikely(sz != -1 && sz < size)) { +#ifdef CONFIG_DEBUG_VM + WARN(1, "Buffer overflow detected!\n"); +#endif + return size; + } + + if (!__builtin_constant_p(size)) { + check_object_size(src, size, true); + if ((unsigned long)dst < PAX_USER_SHADOW_BASE) + dst += PAX_USER_SHADOW_BASE; return copy_user_generic((__force void *)dst, src, size); + } switch (size) { - case 1:__put_user_asm(*(u8 *)src, (u8 __user *)dst, + case 1:__put_user_asm(*(const u8 *)src, (u8 __user *)dst, ret, "b", "b", "iq", 1); return ret; - case 2:__put_user_asm(*(u16 *)src, (u16 __user *)dst, + case 2:__put_user_asm(*(const u16 *)src, (u16 __user *)dst, ret, "w", "w", "ir", 2); return ret; - case 4:__put_user_asm(*(u32 *)src, (u32 __user *)dst, + case 4:__put_user_asm(*(const u32 *)src, (u32 __user *)dst, ret, "l", "k", "ir", 4); return ret; - case 8:__put_user_asm(*(u64 *)src, (u64 __user *)dst, + case 8:__put_user_asm(*(const u64 *)src, (u64 __user *)dst, ret, "q", "", "er", 8); return ret; case 10: - __put_user_asm(*(u64 *)src, (u64 __user *)dst, + __put_user_asm(*(const u64 *)src, (u64 __user *)dst, ret, "q", "", "er", 10); if (unlikely(ret)) return ret; asm("":::"memory"); - __put_user_asm(4[(u16 *)src], 4 + (u16 __user *)dst, + __put_user_asm(4[(const u16 *)src], 4 + (u16 __user *)dst, ret, "w", "w", "ir", 2); return ret; case 16: - __put_user_asm(*(u64 *)src, (u64 __user *)dst, + __put_user_asm(*(const u64 *)src, (u64 __user *)dst, ret, "q", "", "er", 16); if (unlikely(ret)) return ret; asm("":::"memory"); - __put_user_asm(1[(u64 *)src], 1 + (u64 __user *)dst, + __put_user_asm(1[(const u64 *)src], 1 + (u64 __user *)dst, ret, "q", "", "er", 8); return ret; default: + if ((unsigned long)dst < PAX_USER_SHADOW_BASE) + dst += PAX_USER_SHADOW_BASE; return copy_user_generic((__force void *)dst, src, size); } } static __always_inline __must_check -int __copy_in_user(void __user *dst, const void __user *src, unsigned size) +unsigned long __copy_in_user(void __user *dst, const void __user *src, unsigned size) { - int ret = 0; + unsigned ret = 0; might_fault(); - if (!__builtin_constant_p(size)) + + if ((int)size < 0) + return size; + +#ifdef CONFIG_PAX_MEMORY_UDEREF + if (!__access_ok(VERIFY_READ, src, size)) + return size; + if (!__access_ok(VERIFY_WRITE, dst, size)) + return size; +#endif + + if (!__builtin_constant_p(size)) { + if ((unsigned long)src < PAX_USER_SHADOW_BASE) + src += PAX_USER_SHADOW_BASE; + if ((unsigned long)dst < PAX_USER_SHADOW_BASE) + dst += PAX_USER_SHADOW_BASE; return copy_user_generic((__force void *)dst, - (__force void *)src, size); + (__force const void *)src, size); + } switch (size) { case 1: { u8 tmp; - __get_user_asm(tmp, (u8 __user *)src, + __get_user_asm(tmp, (const u8 __user *)src, ret, "b", "b", "=q", 1); if (likely(!ret)) __put_user_asm(tmp, (u8 __user *)dst, @@ -177,7 +244,7 @@ int __copy_in_user(void __user *dst, con } case 2: { u16 tmp; - __get_user_asm(tmp, (u16 __user *)src, + __get_user_asm(tmp, (const u16 __user *)src, ret, "w", "w", "=r", 2); if (likely(!ret)) __put_user_asm(tmp, (u16 __user *)dst, @@ -187,7 +254,7 @@ int __copy_in_user(void __user *dst, con case 4: { u32 tmp; - __get_user_asm(tmp, (u32 __user *)src, + __get_user_asm(tmp, (const u32 __user *)src, ret, "l", "k", "=r", 4); if (likely(!ret)) __put_user_asm(tmp, (u32 __user *)dst, @@ -196,7 +263,7 @@ int __copy_in_user(void __user *dst, con } case 8: { u64 tmp; - __get_user_asm(tmp, (u64 __user *)src, + __get_user_asm(tmp, (const u64 __user *)src, ret, "q", "", "=r", 8); if (likely(!ret)) __put_user_asm(tmp, (u64 __user *)dst, @@ -204,8 +271,12 @@ int __copy_in_user(void __user *dst, con return ret; } default: + if ((unsigned long)src < PAX_USER_SHADOW_BASE) + src += PAX_USER_SHADOW_BASE; + if ((unsigned long)dst < PAX_USER_SHADOW_BASE) + dst += PAX_USER_SHADOW_BASE; return copy_user_generic((__force void *)dst, - (__force void *)src, size); + (__force const void *)src, size); } } @@ -222,33 +293,68 @@ __must_check unsigned long __clear_user( static __must_check __always_inline int __copy_from_user_inatomic(void *dst, const void __user *src, unsigned size) { + if ((int)size < 0) + return size; + +#ifdef CONFIG_PAX_MEMORY_UDEREF + if (!__access_ok(VERIFY_READ, src, size)) + return size; +#endif + + if ((unsigned long)src < PAX_USER_SHADOW_BASE) + src += PAX_USER_SHADOW_BASE; return copy_user_generic(dst, (__force const void *)src, size); } -static __must_check __always_inline int +static __must_check __always_inline unsigned long __copy_to_user_inatomic(void __user *dst, const void *src, unsigned size) { + if ((int)size < 0) + return size; + +#ifdef CONFIG_PAX_MEMORY_UDEREF + if (!__access_ok(VERIFY_WRITE, dst, size)) + return size; +#endif + + if ((unsigned long)dst < PAX_USER_SHADOW_BASE) + dst += PAX_USER_SHADOW_BASE; return copy_user_generic((__force void *)dst, src, size); } -extern long __copy_user_nocache(void *dst, const void __user *src, +extern unsigned long __copy_user_nocache(void *dst, const void __user *src, unsigned size, int zerorest); -static inline int -__copy_from_user_nocache(void *dst, const void __user *src, unsigned size) +static inline unsigned long __copy_from_user_nocache(void *dst, const void __user *src, unsigned size) { might_sleep(); + + if ((int)size < 0) + return size; + +#ifdef CONFIG_PAX_MEMORY_UDEREF + if (!__access_ok(VERIFY_READ, src, size)) + return size; +#endif + return __copy_user_nocache(dst, src, size, 1); } -static inline int -__copy_from_user_inatomic_nocache(void *dst, const void __user *src, +static inline unsigned long __copy_from_user_inatomic_nocache(void *dst, const void __user *src, unsigned size) { + if ((int)size < 0) + return size; + +#ifdef CONFIG_PAX_MEMORY_UDEREF + if (!__access_ok(VERIFY_READ, src, size)) + return size; +#endif + return __copy_user_nocache(dst, src, size, 0); } -unsigned long +extern unsigned long copy_user_handle_tail(char *to, char *from, unsigned len, unsigned zerorest); #endif /* _ASM_X86_UACCESS_64_H */ diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/include/asm/vgtod.h linux-2.6.36.4-pax/arch/x86/include/asm/vgtod.h --- linux-2.6.36.4/arch/x86/include/asm/vgtod.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/include/asm/vgtod.h 2010-10-27 22:58:07.000000000 +0200 @@ -14,6 +14,7 @@ struct vsyscall_gtod_data { int sysctl_enabled; struct timezone sys_tz; struct { /* extract of a clocksource struct */ + char name[8]; cycle_t (*vread)(void); cycle_t cycle_last; cycle_t mask; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/include/asm/vmi.h linux-2.6.36.4-pax/arch/x86/include/asm/vmi.h --- linux-2.6.36.4/arch/x86/include/asm/vmi.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/include/asm/vmi.h 2010-10-27 22:58:07.000000000 +0200 @@ -191,6 +191,7 @@ struct vrom_header { u8 reserved[96]; /* Reserved for headers */ char vmi_init[8]; /* VMI_Init jump point */ char get_reloc[8]; /* VMI_GetRelocationInfo jump point */ + char rom_data[8048]; /* rest of the option ROM */ } __attribute__((packed)); struct pnp_header { diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/include/asm/vsyscall.h linux-2.6.36.4-pax/arch/x86/include/asm/vsyscall.h --- linux-2.6.36.4/arch/x86/include/asm/vsyscall.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/include/asm/vsyscall.h 2010-10-27 22:58:07.000000000 +0200 @@ -15,9 +15,10 @@ enum vsyscall_num { #ifdef __KERNEL__ #include +#include +#include #define __section_vgetcpu_mode __attribute__ ((unused, __section__ (".vgetcpu_mode"), aligned(16))) -#define __section_jiffies __attribute__ ((unused, __section__ (".jiffies"), aligned(16))) /* Definitions for CONFIG_GENERIC_TIME definitions */ #define __section_vsyscall_gtod_data __attribute__ \ @@ -31,7 +32,6 @@ enum vsyscall_num { #define VGETCPU_LSL 2 extern int __vgetcpu_mode; -extern volatile unsigned long __jiffies; /* kernel space (writeable) */ extern int vgetcpu_mode; @@ -39,6 +39,9 @@ extern struct timezone sys_tz; extern void map_vsyscall(void); +extern int vgettimeofday(struct timeval * tv, struct timezone * tz); +extern time_t vtime(time_t *t); +extern long vgetcpu(unsigned *cpu, unsigned *node, struct getcpu_cache *tcache); #endif /* __KERNEL__ */ #endif /* _ASM_X86_VSYSCALL_H */ diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/include/asm/xsave.h linux-2.6.36.4-pax/arch/x86/include/asm/xsave.h --- linux-2.6.36.4/arch/x86/include/asm/xsave.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/include/asm/xsave.h 2010-10-27 22:58:07.000000000 +0200 @@ -65,6 +65,11 @@ static inline int xsave_user(struct xsav { int err; +#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF) + if ((unsigned long)buf < PAX_USER_SHADOW_BASE) + buf = (struct xsave_struct __user *)((void __user*)buf + PAX_USER_SHADOW_BASE); +#endif + /* * Clear the xsave header first, so that reserved fields are * initialized to zero. @@ -100,6 +105,11 @@ static inline int xrestore_user(struct x u32 lmask = mask; u32 hmask = mask >> 32; +#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF) + if ((unsigned long)xstate < PAX_USER_SHADOW_BASE) + xstate = (struct xsave_struct *)((void *)xstate + PAX_USER_SHADOW_BASE); +#endif + __asm__ __volatile__("1: .byte " REX_PREFIX "0x0f,0xae,0x2f\n" "2:\n" ".section .fixup,\"ax\"\n" diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/kernel/acpi/boot.c linux-2.6.36.4-pax/arch/x86/kernel/acpi/boot.c --- linux-2.6.36.4/arch/x86/kernel/acpi/boot.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/kernel/acpi/boot.c 2010-10-27 22:58:07.000000000 +0200 @@ -1472,7 +1472,7 @@ static struct dmi_system_id __initdata a DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq 6715b"), }, }, - {} + { NULL, NULL, {{0, {0}}}, NULL} }; /* diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/kernel/acpi/sleep.c linux-2.6.36.4-pax/arch/x86/kernel/acpi/sleep.c --- linux-2.6.36.4/arch/x86/kernel/acpi/sleep.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/kernel/acpi/sleep.c 2010-10-27 22:58:07.000000000 +0200 @@ -11,11 +11,12 @@ #include #include #include +#include #include "realmode/wakeup.h" #include "sleep.h" -unsigned long acpi_wakeup_address; +unsigned long acpi_wakeup_address = 0x2000; unsigned long acpi_realmode_flags; /* address in low memory of the wakeup routine. */ @@ -96,8 +97,12 @@ int acpi_save_state_mem(void) header->trampoline_segment = setup_trampoline() >> 4; #ifdef CONFIG_SMP stack_start.sp = temp_stack + sizeof(temp_stack); + + pax_open_kernel(); early_gdt_descr.address = (unsigned long)get_cpu_gdt_table(smp_processor_id()); + pax_close_kernel(); + initial_gs = per_cpu_offset(smp_processor_id()); #endif initial_code = (unsigned long)wakeup_long64; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/kernel/acpi/wakeup_32.S linux-2.6.36.4-pax/arch/x86/kernel/acpi/wakeup_32.S --- linux-2.6.36.4/arch/x86/kernel/acpi/wakeup_32.S 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/kernel/acpi/wakeup_32.S 2010-10-27 22:58:07.000000000 +0200 @@ -30,13 +30,11 @@ wakeup_pmode_return: # and restore the stack ... but you need gdt for this to work movl saved_context_esp, %esp - movl %cs:saved_magic, %eax - cmpl $0x12345678, %eax + cmpl $0x12345678, saved_magic jne bogus_magic # jump to place where we left off - movl saved_eip, %eax - jmp *%eax + jmp *(saved_eip) bogus_magic: jmp bogus_magic diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/kernel/alternative.c linux-2.6.36.4-pax/arch/x86/kernel/alternative.c --- linux-2.6.36.4/arch/x86/kernel/alternative.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/kernel/alternative.c 2010-12-14 21:18:01.000000000 +0100 @@ -248,7 +248,7 @@ static void alternatives_smp_lock(const if (!*poff || ptr < text || ptr >= text_end) continue; /* turn DS segment override prefix into lock prefix */ - if (*ptr == 0x3e) + if (*ktla_ktva(ptr) == 0x3e) text_poke(ptr, ((unsigned char []){0xf0}), 1); }; mutex_unlock(&text_mutex); @@ -269,7 +269,7 @@ static void alternatives_smp_unlock(cons if (!*poff || ptr < text || ptr >= text_end) continue; /* turn lock prefix into DS segment override prefix */ - if (*ptr == 0xf0) + if (*ktla_ktva(ptr) == 0xf0) text_poke(ptr, ((unsigned char []){0x3E}), 1); }; mutex_unlock(&text_mutex); @@ -437,7 +437,7 @@ void __init_or_module apply_paravirt(str BUG_ON(p->len > MAX_PATCH_LEN); /* prep the buffer with the original instructions */ - memcpy(insnbuf, p->instr, p->len); + memcpy(insnbuf, ktla_ktva(p->instr), p->len); used = pv_init_ops.patch(p->instrtype, p->clobbers, insnbuf, (unsigned long)p->instr, p->len); @@ -505,7 +505,7 @@ void __init alternative_instructions(voi if (smp_alt_once) free_init_pages("SMP alternatives", (unsigned long)__smp_locks, - (unsigned long)__smp_locks_end); + PAGE_ALIGN((unsigned long)__smp_locks_end)); restart_nmi(); } @@ -522,13 +522,17 @@ void __init alternative_instructions(voi * instructions. And on the local CPU you need to be protected again NMI or MCE * handlers seeing an inconsistent instruction while you patch. */ -static void *__init_or_module text_poke_early(void *addr, const void *opcode, +static void *__kprobes text_poke_early(void *addr, const void *opcode, size_t len) { unsigned long flags; local_irq_save(flags); - memcpy(addr, opcode, len); + + pax_open_kernel(); + memcpy(ktla_ktva(addr), opcode, len); sync_core(); + pax_close_kernel(); + local_irq_restore(flags); /* Could also do a CLFLUSH here to speed up CPU recovery; but that causes hangs on some VIA CPUs. */ @@ -550,36 +554,22 @@ static void *__init_or_module text_poke_ */ void *__kprobes text_poke(void *addr, const void *opcode, size_t len) { - unsigned long flags; - char *vaddr; + unsigned char *vaddr = ktla_ktva(addr); struct page *pages[2]; - int i; + size_t i; if (!core_kernel_text((unsigned long)addr)) { - pages[0] = vmalloc_to_page(addr); - pages[1] = vmalloc_to_page(addr + PAGE_SIZE); + pages[0] = vmalloc_to_page(vaddr); + pages[1] = vmalloc_to_page(vaddr + PAGE_SIZE); } else { - pages[0] = virt_to_page(addr); + pages[0] = virt_to_page(vaddr); WARN_ON(!PageReserved(pages[0])); - pages[1] = virt_to_page(addr + PAGE_SIZE); + pages[1] = virt_to_page(vaddr + PAGE_SIZE); } BUG_ON(!pages[0]); - local_irq_save(flags); - set_fixmap(FIX_TEXT_POKE0, page_to_phys(pages[0])); - if (pages[1]) - set_fixmap(FIX_TEXT_POKE1, page_to_phys(pages[1])); - vaddr = (char *)fix_to_virt(FIX_TEXT_POKE0); - memcpy(&vaddr[(unsigned long)addr & ~PAGE_MASK], opcode, len); - clear_fixmap(FIX_TEXT_POKE0); - if (pages[1]) - clear_fixmap(FIX_TEXT_POKE1); - local_flush_tlb(); - sync_core(); - /* Could also do a CLFLUSH here to speed up CPU recovery; but - that causes hangs on some VIA CPUs. */ + text_poke_early(addr, opcode, len); for (i = 0; i < len; i++) - BUG_ON(((char *)addr)[i] != ((char *)opcode)[i]); - local_irq_restore(flags); + BUG_ON((vaddr)[i] != ((const unsigned char *)opcode)[i]); return addr; } diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/kernel/amd_iommu.c linux-2.6.36.4-pax/arch/x86/kernel/amd_iommu.c --- linux-2.6.36.4/arch/x86/kernel/amd_iommu.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/kernel/amd_iommu.c 2010-10-27 22:58:44.000000000 +0200 @@ -2286,7 +2286,7 @@ static void prealloc_protection_domains( } } -static struct dma_map_ops amd_iommu_dma_ops = { +static const struct dma_map_ops amd_iommu_dma_ops = { .alloc_coherent = alloc_coherent, .free_coherent = free_coherent, .map_page = map_page, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/kernel/apic/io_apic.c linux-2.6.36.4-pax/arch/x86/kernel/apic/io_apic.c --- linux-2.6.36.4/arch/x86/kernel/apic/io_apic.c 2011-01-12 15:14:09.000000000 +0100 +++ linux-2.6.36.4-pax/arch/x86/kernel/apic/io_apic.c 2011-01-12 15:14:27.000000000 +0100 @@ -696,7 +696,7 @@ struct IO_APIC_route_entry **alloc_ioapi ioapic_entries = kzalloc(sizeof(*ioapic_entries) * nr_ioapics, GFP_ATOMIC); if (!ioapic_entries) - return 0; + return NULL; for (apic = 0; apic < nr_ioapics; apic++) { ioapic_entries[apic] = @@ -713,7 +713,7 @@ nomem: kfree(ioapic_entries[apic]); kfree(ioapic_entries); - return 0; + return NULL; } /* @@ -1123,7 +1123,7 @@ int IO_APIC_get_PCI_irq_vector(int bus, } EXPORT_SYMBOL(IO_APIC_get_PCI_irq_vector); -void lock_vector_lock(void) +void lock_vector_lock(void) __acquires(vector_lock) { /* Used to the online set of cpus does not change * during assign_irq_vector. @@ -1131,7 +1131,7 @@ void lock_vector_lock(void) raw_spin_lock(&vector_lock); } -void unlock_vector_lock(void) +void unlock_vector_lock(void) __releases(vector_lock) { raw_spin_unlock(&vector_lock); } diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/kernel/apm_32.c linux-2.6.36.4-pax/arch/x86/kernel/apm_32.c --- linux-2.6.36.4/arch/x86/kernel/apm_32.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/kernel/apm_32.c 2010-10-27 22:58:07.000000000 +0200 @@ -410,7 +410,7 @@ static DEFINE_MUTEX(apm_mutex); * This is for buggy BIOS's that refer to (real mode) segment 0x40 * even though they are called in protected mode. */ -static struct desc_struct bad_bios_desc = GDT_ENTRY_INIT(0x4092, +static const struct desc_struct bad_bios_desc = GDT_ENTRY_INIT(0x4093, (unsigned long)__va(0x400UL), PAGE_SIZE - 0x400 - 1); static const char driver_version[] = "1.16ac"; /* no spaces */ @@ -588,7 +588,10 @@ static long __apm_bios_call(void *_call) BUG_ON(cpu != 0); gdt = get_cpu_gdt_table(cpu); save_desc_40 = gdt[0x40 / 8]; + + pax_open_kernel(); gdt[0x40 / 8] = bad_bios_desc; + pax_close_kernel(); apm_irq_save(flags); APM_DO_SAVE_SEGS; @@ -597,7 +600,11 @@ static long __apm_bios_call(void *_call) &call->esi); APM_DO_RESTORE_SEGS; apm_irq_restore(flags); + + pax_open_kernel(); gdt[0x40 / 8] = save_desc_40; + pax_close_kernel(); + put_cpu(); return call->eax & 0xff; @@ -664,7 +671,10 @@ static long __apm_bios_call_simple(void BUG_ON(cpu != 0); gdt = get_cpu_gdt_table(cpu); save_desc_40 = gdt[0x40 / 8]; + + pax_open_kernel(); gdt[0x40 / 8] = bad_bios_desc; + pax_close_kernel(); apm_irq_save(flags); APM_DO_SAVE_SEGS; @@ -672,7 +682,11 @@ static long __apm_bios_call_simple(void &call->eax); APM_DO_RESTORE_SEGS; apm_irq_restore(flags); + + pax_open_kernel(); gdt[0x40 / 8] = save_desc_40; + pax_close_kernel(); + put_cpu(); return error; } @@ -975,7 +989,7 @@ recalc: static void apm_power_off(void) { - unsigned char po_bios_call[] = { + const unsigned char po_bios_call[] = { 0xb8, 0x00, 0x10, /* movw $0x1000,ax */ 0x8e, 0xd0, /* movw ax,ss */ 0xbc, 0x00, 0xf0, /* movw $0xf000,sp */ @@ -1931,7 +1945,10 @@ static const struct file_operations apm_ static struct miscdevice apm_device = { APM_MINOR_DEV, "apm_bios", - &apm_bios_fops + &apm_bios_fops, + {NULL, NULL}, + NULL, + NULL }; @@ -2252,7 +2269,7 @@ static struct dmi_system_id __initdata a { DMI_MATCH(DMI_SYS_VENDOR, "IBM"), }, }, - { } + { NULL, NULL, {DMI_MATCH(DMI_NONE, {0})}, NULL} }; /* @@ -2355,12 +2372,15 @@ static int __init apm_init(void) * code to that CPU. */ gdt = get_cpu_gdt_table(0); + + pax_open_kernel(); set_desc_base(&gdt[APM_CS >> 3], (unsigned long)__va((unsigned long)apm_info.bios.cseg << 4)); set_desc_base(&gdt[APM_CS_16 >> 3], (unsigned long)__va((unsigned long)apm_info.bios.cseg_16 << 4)); set_desc_base(&gdt[APM_DS >> 3], (unsigned long)__va((unsigned long)apm_info.bios.dseg << 4)); + pax_close_kernel(); proc_create("apm", 0, NULL, &apm_file_ops); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/kernel/asm-offsets_32.c linux-2.6.36.4-pax/arch/x86/kernel/asm-offsets_32.c --- linux-2.6.36.4/arch/x86/kernel/asm-offsets_32.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/kernel/asm-offsets_32.c 2010-10-27 22:58:07.000000000 +0200 @@ -115,6 +115,11 @@ void foo(void) OFFSET(PV_CPU_iret, pv_cpu_ops, iret); OFFSET(PV_CPU_irq_enable_sysexit, pv_cpu_ops, irq_enable_sysexit); OFFSET(PV_CPU_read_cr0, pv_cpu_ops, read_cr0); + +#ifdef CONFIG_PAX_KERNEXEC + OFFSET(PV_CPU_write_cr0, pv_cpu_ops, write_cr0); +#endif + #endif #ifdef CONFIG_XEN diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/kernel/asm-offsets_64.c linux-2.6.36.4-pax/arch/x86/kernel/asm-offsets_64.c --- linux-2.6.36.4/arch/x86/kernel/asm-offsets_64.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/kernel/asm-offsets_64.c 2010-10-27 22:58:07.000000000 +0200 @@ -63,6 +63,18 @@ int main(void) OFFSET(PV_CPU_irq_enable_sysexit, pv_cpu_ops, irq_enable_sysexit); OFFSET(PV_CPU_swapgs, pv_cpu_ops, swapgs); OFFSET(PV_MMU_read_cr2, pv_mmu_ops, read_cr2); + +#ifdef CONFIG_PAX_KERNEXEC + OFFSET(PV_CPU_read_cr0, pv_cpu_ops, read_cr0); + OFFSET(PV_CPU_write_cr0, pv_cpu_ops, write_cr0); +#endif + +#ifdef CONFIG_PAX_MEMORY_UDEREF + OFFSET(PV_MMU_read_cr3, pv_mmu_ops, read_cr3); + OFFSET(PV_MMU_write_cr3, pv_mmu_ops, write_cr3); + OFFSET(PV_MMU_set_pgd, pv_mmu_ops, set_pgd); +#endif + #endif @@ -115,6 +127,7 @@ int main(void) ENTRY(cr8); BLANK(); #undef ENTRY + DEFINE(TSS_size, sizeof(struct tss_struct)); DEFINE(TSS_ist, offsetof(struct tss_struct, x86_tss.ist)); BLANK(); DEFINE(crypto_tfm_ctx_offset, offsetof(struct crypto_tfm, __crt_ctx)); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/kernel/cpu/Makefile linux-2.6.36.4-pax/arch/x86/kernel/cpu/Makefile --- linux-2.6.36.4/arch/x86/kernel/cpu/Makefile 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/kernel/cpu/Makefile 2010-10-27 22:58:07.000000000 +0200 @@ -8,10 +8,6 @@ CFLAGS_REMOVE_common.o = -pg CFLAGS_REMOVE_perf_event.o = -pg endif -# Make sure load_percpu_segment has no stackprotector -nostackp := $(call cc-option, -fno-stack-protector) -CFLAGS_common.o := $(nostackp) - obj-y := intel_cacheinfo.o scattered.o topology.o obj-y += proc.o capflags.o powerflags.o common.o obj-y += vmware.o hypervisor.o sched.o mshyperv.o diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/kernel/cpu/amd.c linux-2.6.36.4-pax/arch/x86/kernel/cpu/amd.c --- linux-2.6.36.4/arch/x86/kernel/cpu/amd.c 2011-01-12 15:14:10.000000000 +0100 +++ linux-2.6.36.4-pax/arch/x86/kernel/cpu/amd.c 2011-02-24 15:21:16.000000000 +0100 @@ -571,7 +571,7 @@ static unsigned int __cpuinit amd_size_c unsigned int size) { /* AMD errata T13 (order #21922) */ - if ((c->x86 == 6)) { + if (c->x86 == 6) { /* Duron Rev A0 */ if (c->x86_model == 3 && c->x86_mask == 0) size = 64; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/kernel/cpu/common.c linux-2.6.36.4-pax/arch/x86/kernel/cpu/common.c --- linux-2.6.36.4/arch/x86/kernel/cpu/common.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/kernel/cpu/common.c 2010-12-15 11:05:24.000000000 +0100 @@ -83,60 +83,6 @@ static const struct cpu_dev __cpuinitcon static const struct cpu_dev *this_cpu __cpuinitdata = &default_cpu; -DEFINE_PER_CPU_PAGE_ALIGNED(struct gdt_page, gdt_page) = { .gdt = { -#ifdef CONFIG_X86_64 - /* - * We need valid kernel segments for data and code in long mode too - * IRET will check the segment types kkeil 2000/10/28 - * Also sysret mandates a special GDT layout - * - * TLS descriptors are currently at a different place compared to i386. - * Hopefully nobody expects them at a fixed place (Wine?) - */ - [GDT_ENTRY_KERNEL32_CS] = GDT_ENTRY_INIT(0xc09b, 0, 0xfffff), - [GDT_ENTRY_KERNEL_CS] = GDT_ENTRY_INIT(0xa09b, 0, 0xfffff), - [GDT_ENTRY_KERNEL_DS] = GDT_ENTRY_INIT(0xc093, 0, 0xfffff), - [GDT_ENTRY_DEFAULT_USER32_CS] = GDT_ENTRY_INIT(0xc0fb, 0, 0xfffff), - [GDT_ENTRY_DEFAULT_USER_DS] = GDT_ENTRY_INIT(0xc0f3, 0, 0xfffff), - [GDT_ENTRY_DEFAULT_USER_CS] = GDT_ENTRY_INIT(0xa0fb, 0, 0xfffff), -#else - [GDT_ENTRY_KERNEL_CS] = GDT_ENTRY_INIT(0xc09a, 0, 0xfffff), - [GDT_ENTRY_KERNEL_DS] = GDT_ENTRY_INIT(0xc092, 0, 0xfffff), - [GDT_ENTRY_DEFAULT_USER_CS] = GDT_ENTRY_INIT(0xc0fa, 0, 0xfffff), - [GDT_ENTRY_DEFAULT_USER_DS] = GDT_ENTRY_INIT(0xc0f2, 0, 0xfffff), - /* - * Segments used for calling PnP BIOS have byte granularity. - * They code segments and data segments have fixed 64k limits, - * the transfer segment sizes are set at run time. - */ - /* 32-bit code */ - [GDT_ENTRY_PNPBIOS_CS32] = GDT_ENTRY_INIT(0x409a, 0, 0xffff), - /* 16-bit code */ - [GDT_ENTRY_PNPBIOS_CS16] = GDT_ENTRY_INIT(0x009a, 0, 0xffff), - /* 16-bit data */ - [GDT_ENTRY_PNPBIOS_DS] = GDT_ENTRY_INIT(0x0092, 0, 0xffff), - /* 16-bit data */ - [GDT_ENTRY_PNPBIOS_TS1] = GDT_ENTRY_INIT(0x0092, 0, 0), - /* 16-bit data */ - [GDT_ENTRY_PNPBIOS_TS2] = GDT_ENTRY_INIT(0x0092, 0, 0), - /* - * The APM segments have byte granularity and their bases - * are set at run time. All have 64k limits. - */ - /* 32-bit code */ - [GDT_ENTRY_APMBIOS_BASE] = GDT_ENTRY_INIT(0x409a, 0, 0xffff), - /* 16-bit code */ - [GDT_ENTRY_APMBIOS_BASE+1] = GDT_ENTRY_INIT(0x009a, 0, 0xffff), - /* data */ - [GDT_ENTRY_APMBIOS_BASE+2] = GDT_ENTRY_INIT(0x4092, 0, 0xffff), - - [GDT_ENTRY_ESPFIX_SS] = GDT_ENTRY_INIT(0xc092, 0, 0xfffff), - [GDT_ENTRY_PERCPU] = GDT_ENTRY_INIT(0xc092, 0, 0xfffff), - GDT_STACK_CANARY_INIT -#endif -} }; -EXPORT_PER_CPU_SYMBOL_GPL(gdt_page); - static int __init x86_xsave_setup(char *s) { setup_clear_cpu_cap(X86_FEATURE_XSAVE); @@ -352,7 +298,7 @@ void switch_to_new_gdt(int cpu) { struct desc_ptr gdt_descr; - gdt_descr.address = (long)get_cpu_gdt_table(cpu); + gdt_descr.address = (unsigned long)get_cpu_gdt_table(cpu); gdt_descr.size = GDT_SIZE - 1; load_gdt(&gdt_descr); /* Reload the per-cpu base */ @@ -820,6 +766,10 @@ static void __cpuinit identify_cpu(struc /* Filter out anything that depends on CPUID levels we don't have */ filter_cpuid_features(c, true); +#if defined(CONFIG_PAX_SEGMEXEC) || defined(CONFIG_PAX_KERNEXEC) || (defined(CONFIG_PAX_MEMORY_UDEREF) && defined(CONFIG_X86_32)) + setup_clear_cpu_cap(X86_FEATURE_SEP); +#endif + /* If the model name is still unset, do table lookup. */ if (!c->x86_model_id[0]) { const char *p; @@ -1080,7 +1030,7 @@ struct pt_regs * __cpuinit idle_regs(str { memset(regs, 0, sizeof(struct pt_regs)); regs->fs = __KERNEL_PERCPU; - regs->gs = __KERNEL_STACK_CANARY; + savesegment(gs, regs->gs); return regs; } @@ -1135,7 +1085,7 @@ void __cpuinit cpu_init(void) int i; cpu = stack_smp_processor_id(); - t = &per_cpu(init_tss, cpu); + t = init_tss + cpu; oist = &per_cpu(orig_ist, cpu); #ifdef CONFIG_NUMA @@ -1161,7 +1111,7 @@ void __cpuinit cpu_init(void) switch_to_new_gdt(cpu); loadsegment(fs, 0); - load_idt((const struct desc_ptr *)&idt_descr); + load_idt(&idt_descr); memset(me->thread.tls_array, 0, GDT_ENTRY_TLS_ENTRIES * 8); syscall_init(); @@ -1170,7 +1120,6 @@ void __cpuinit cpu_init(void) wrmsrl(MSR_KERNEL_GS_BASE, 0); barrier(); - x86_configure_nx(); if (cpu != 0) enable_x2apic(); @@ -1224,7 +1173,7 @@ void __cpuinit cpu_init(void) { int cpu = smp_processor_id(); struct task_struct *curr = current; - struct tss_struct *t = &per_cpu(init_tss, cpu); + struct tss_struct *t = init_tss + cpu; struct thread_struct *thread = &curr->thread; if (cpumask_test_and_set_cpu(cpu, cpu_initialized_mask)) { diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c linux-2.6.36.4-pax/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c --- linux-2.6.36.4/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c 2010-12-16 12:42:50.000000000 +0100 +++ linux-2.6.36.4-pax/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c 2010-12-16 12:43:29.000000000 +0100 @@ -481,7 +481,7 @@ static const struct dmi_system_id sw_any DMI_MATCH(DMI_PRODUCT_NAME, "X6DLP"), }, }, - { } + { NULL, NULL, {DMI_MATCH(DMI_NONE, {0})}, NULL } }; static int acpi_cpufreq_blacklist(struct cpuinfo_x86 *c) diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/kernel/cpu/cpufreq/speedstep-centrino.c linux-2.6.36.4-pax/arch/x86/kernel/cpu/cpufreq/speedstep-centrino.c --- linux-2.6.36.4/arch/x86/kernel/cpu/cpufreq/speedstep-centrino.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/kernel/cpu/cpufreq/speedstep-centrino.c 2010-10-27 22:58:07.000000000 +0200 @@ -226,7 +226,7 @@ static struct cpu_model models[] = { &cpu_ids[CPU_MP4HT_D0], NULL, 0, NULL }, { &cpu_ids[CPU_MP4HT_E0], NULL, 0, NULL }, - { NULL, } + { NULL, NULL, 0, NULL} }; #undef _BANIAS #undef BANIAS diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/kernel/cpu/intel.c linux-2.6.36.4-pax/arch/x86/kernel/cpu/intel.c --- linux-2.6.36.4/arch/x86/kernel/cpu/intel.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/kernel/cpu/intel.c 2010-10-27 22:58:07.000000000 +0200 @@ -161,7 +161,7 @@ static void __cpuinit trap_init_f00f_bug * Update the IDT descriptor and reload the IDT so that * it uses the read-only mapped virtual address. */ - idt_descr.address = fix_to_virt(FIX_F00F_IDT); + idt_descr.address = (struct desc_struct *)fix_to_virt(FIX_F00F_IDT); load_idt(&idt_descr); } #endif diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/kernel/cpu/mcheck/mce.c linux-2.6.36.4-pax/arch/x86/kernel/cpu/mcheck/mce.c --- linux-2.6.36.4/arch/x86/kernel/cpu/mcheck/mce.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/kernel/cpu/mcheck/mce.c 2011-01-25 20:15:13.000000000 +0100 @@ -45,6 +45,7 @@ #include #include #include +#include #include "mce-internal.h" @@ -219,7 +220,7 @@ static void print_mce(struct mce *m) !(m->mcgstatus & MCG_STATUS_EIPV) ? " !INEXACT!" : "", m->cs, m->ip); - if (m->cs == __KERNEL_CS) + if (m->cs == __KERNEL_CS || m->cs == __KERNEXEC_KERNEL_CS) print_symbol("{%s}", m->ip); pr_cont("\n"); } @@ -1460,14 +1461,14 @@ void __cpuinit mcheck_cpu_init(struct cp */ static DEFINE_SPINLOCK(mce_state_lock); -static int open_count; /* #times opened */ +static local_t open_count; /* #times opened */ static int open_exclu; /* already open exclusive? */ static int mce_open(struct inode *inode, struct file *file) { spin_lock(&mce_state_lock); - if (open_exclu || (open_count && (file->f_flags & O_EXCL))) { + if (open_exclu || (local_read(&open_count) && (file->f_flags & O_EXCL))) { spin_unlock(&mce_state_lock); return -EBUSY; @@ -1475,7 +1476,7 @@ static int mce_open(struct inode *inode, if (file->f_flags & O_EXCL) open_exclu = 1; - open_count++; + local_inc(&open_count); spin_unlock(&mce_state_lock); @@ -1486,7 +1487,7 @@ static int mce_release(struct inode *ino { spin_lock(&mce_state_lock); - open_count--; + local_dec(&open_count); open_exclu = 0; spin_unlock(&mce_state_lock); @@ -1672,6 +1673,7 @@ static struct miscdevice mce_log_device MISC_MCELOG_MINOR, "mcelog", &mce_chrdev_ops, + {NULL, NULL}, NULL, NULL }; /* diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/kernel/cpu/mtrr/generic.c linux-2.6.36.4-pax/arch/x86/kernel/cpu/mtrr/generic.c --- linux-2.6.36.4/arch/x86/kernel/cpu/mtrr/generic.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/kernel/cpu/mtrr/generic.c 2010-10-27 22:58:07.000000000 +0200 @@ -28,7 +28,7 @@ static struct fixed_range_block fixed_ra { MSR_MTRRfix64K_00000, 1 }, /* one 64k MTRR */ { MSR_MTRRfix16K_80000, 2 }, /* two 16k MTRRs */ { MSR_MTRRfix4K_C0000, 8 }, /* eight 4k MTRRs */ - {} + { 0, 0 } }; static unsigned long smp_changes_mask; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/kernel/cpu/mtrr/main.c linux-2.6.36.4-pax/arch/x86/kernel/cpu/mtrr/main.c --- linux-2.6.36.4/arch/x86/kernel/cpu/mtrr/main.c 2011-02-24 20:16:30.000000000 +0100 +++ linux-2.6.36.4-pax/arch/x86/kernel/cpu/mtrr/main.c 2011-02-24 20:27:38.000000000 +0100 @@ -61,7 +61,7 @@ static DEFINE_MUTEX(mtrr_mutex); u64 size_or_mask, size_and_mask; static bool mtrr_aps_delayed_init; -static const struct mtrr_ops *mtrr_ops[X86_VENDOR_NUM]; +static const struct mtrr_ops *mtrr_ops[X86_VENDOR_NUM] __read_only; const struct mtrr_ops *mtrr_if; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/kernel/cpu/mtrr/mtrr.h linux-2.6.36.4-pax/arch/x86/kernel/cpu/mtrr/mtrr.h --- linux-2.6.36.4/arch/x86/kernel/cpu/mtrr/mtrr.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/kernel/cpu/mtrr/mtrr.h 2010-10-27 22:58:44.000000000 +0200 @@ -12,19 +12,19 @@ extern unsigned int mtrr_usage_table[MTRR_MAX_VAR_RANGES]; struct mtrr_ops { - u32 vendor; - u32 use_intel_if; - void (*set)(unsigned int reg, unsigned long base, + const u32 vendor; + const u32 use_intel_if; + void (* const set)(unsigned int reg, unsigned long base, unsigned long size, mtrr_type type); - void (*set_all)(void); + void (* const set_all)(void); - void (*get)(unsigned int reg, unsigned long *base, + void (* const get)(unsigned int reg, unsigned long *base, unsigned long *size, mtrr_type *type); - int (*get_free_region)(unsigned long base, unsigned long size, + int (* const get_free_region)(unsigned long base, unsigned long size, int replace_reg); - int (*validate_add_page)(unsigned long base, unsigned long size, + int (* const validate_add_page)(unsigned long base, unsigned long size, unsigned int type); - int (*have_wrcomb)(void); + int (* const have_wrcomb)(void); }; extern int generic_get_free_region(unsigned long base, unsigned long size, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/kernel/cpu/perf_event.c linux-2.6.36.4-pax/arch/x86/kernel/cpu/perf_event.c --- linux-2.6.36.4/arch/x86/kernel/cpu/perf_event.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/kernel/cpu/perf_event.c 2010-10-27 22:58:07.000000000 +0200 @@ -1732,7 +1732,7 @@ perf_callchain_user(struct pt_regs *regs break; callchain_store(entry, frame.return_address); - fp = frame.next_frame; + fp = (__force const void __user *)frame.next_frame; } } diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/kernel/cpu/perfctr-watchdog.c linux-2.6.36.4-pax/arch/x86/kernel/cpu/perfctr-watchdog.c --- linux-2.6.36.4/arch/x86/kernel/cpu/perfctr-watchdog.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/kernel/cpu/perfctr-watchdog.c 2010-10-27 22:58:44.000000000 +0200 @@ -30,11 +30,11 @@ struct nmi_watchdog_ctlblk { /* Interface defining a CPU specific perfctr watchdog */ struct wd_ops { - int (*reserve)(void); - void (*unreserve)(void); - int (*setup)(unsigned nmi_hz); - void (*rearm)(struct nmi_watchdog_ctlblk *wd, unsigned nmi_hz); - void (*stop)(void); + int (* const reserve)(void); + void (* const unreserve)(void); + int (* const setup)(unsigned nmi_hz); + void (* const rearm)(struct nmi_watchdog_ctlblk *wd, unsigned nmi_hz); + void (* const stop)(void); unsigned perfctr; unsigned evntsel; u64 checkbit; @@ -634,6 +634,7 @@ static const struct wd_ops p4_wd_ops = { #define ARCH_PERFMON_NMI_EVENT_SEL ARCH_PERFMON_UNHALTED_CORE_CYCLES_SEL #define ARCH_PERFMON_NMI_EVENT_UMASK ARCH_PERFMON_UNHALTED_CORE_CYCLES_UMASK +/* cannot be const, see probe_nmi_watchdog */ static struct wd_ops intel_arch_wd_ops; static int setup_intel_arch_watchdog(unsigned nmi_hz) @@ -686,6 +687,7 @@ static int setup_intel_arch_watchdog(uns return 1; } +/* cannot be const */ static struct wd_ops intel_arch_wd_ops __read_mostly = { .reserve = single_msr_reserve, .unreserve = single_msr_unreserve, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/kernel/crash.c linux-2.6.36.4-pax/arch/x86/kernel/crash.c --- linux-2.6.36.4/arch/x86/kernel/crash.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/kernel/crash.c 2010-10-27 22:58:07.000000000 +0200 @@ -42,7 +42,7 @@ static void kdump_nmi_callback(int cpu, regs = args->regs; #ifdef CONFIG_X86_32 - if (!user_mode_vm(regs)) { + if (!user_mode(regs)) { crash_fixup_ss_esp(&fixed_regs, regs); regs = &fixed_regs; } diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/kernel/doublefault_32.c linux-2.6.36.4-pax/arch/x86/kernel/doublefault_32.c --- linux-2.6.36.4/arch/x86/kernel/doublefault_32.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/kernel/doublefault_32.c 2010-10-27 22:58:07.000000000 +0200 @@ -11,7 +11,7 @@ #define DOUBLEFAULT_STACKSIZE (1024) static unsigned long doublefault_stack[DOUBLEFAULT_STACKSIZE]; -#define STACK_START (unsigned long)(doublefault_stack+DOUBLEFAULT_STACKSIZE) +#define STACK_START (unsigned long)(doublefault_stack+DOUBLEFAULT_STACKSIZE-2) #define ptr_ok(x) ((x) > PAGE_OFFSET && (x) < PAGE_OFFSET + MAXMEM) @@ -21,7 +21,7 @@ static void doublefault_fn(void) unsigned long gdt, tss; store_gdt(&gdt_desc); - gdt = gdt_desc.address; + gdt = (unsigned long)gdt_desc.address; printk(KERN_EMERG "PANIC: double fault, gdt at %08lx [%d bytes]\n", gdt, gdt_desc.size); @@ -58,10 +58,10 @@ struct tss_struct doublefault_tss __cach /* 0x2 bit is always set */ .flags = X86_EFLAGS_SF | 0x2, .sp = STACK_START, - .es = __USER_DS, + .es = __KERNEL_DS, .cs = __KERNEL_CS, .ss = __KERNEL_DS, - .ds = __USER_DS, + .ds = __KERNEL_DS, .fs = __KERNEL_PERCPU, .__cr3 = __pa_nodebug(swapper_pg_dir), diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/kernel/dumpstack.c linux-2.6.36.4-pax/arch/x86/kernel/dumpstack.c --- linux-2.6.36.4/arch/x86/kernel/dumpstack.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/kernel/dumpstack.c 2010-10-27 22:58:07.000000000 +0200 @@ -206,7 +206,7 @@ void dump_stack(void) #endif printk("Pid: %d, comm: %.20s %s %s %.*s\n", - current->pid, current->comm, print_tainted(), + task_pid_nr(current), current->comm, print_tainted(), init_utsname()->release, (int)strcspn(init_utsname()->version, " "), init_utsname()->version); @@ -262,7 +262,7 @@ void __kprobes oops_end(unsigned long fl panic("Fatal exception in interrupt"); if (panic_on_oops) panic("Fatal exception"); - do_exit(signr); + do_group_exit(signr); } int __kprobes __die(const char *str, struct pt_regs *regs, long err) @@ -289,7 +289,7 @@ int __kprobes __die(const char *str, str show_registers(regs); #ifdef CONFIG_X86_32 - if (user_mode_vm(regs)) { + if (user_mode(regs)) { sp = regs->sp; ss = regs->ss & 0xffff; } else { @@ -317,7 +317,7 @@ void die(const char *str, struct pt_regs unsigned long flags = oops_begin(); int sig = SIGSEGV; - if (!user_mode_vm(regs)) + if (!user_mode(regs)) report_bug(regs->ip, regs); if (__die(str, regs, err)) diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/kernel/dumpstack_32.c linux-2.6.36.4-pax/arch/x86/kernel/dumpstack_32.c --- linux-2.6.36.4/arch/x86/kernel/dumpstack_32.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/kernel/dumpstack_32.c 2010-10-27 22:58:07.000000000 +0200 @@ -105,11 +105,12 @@ void show_registers(struct pt_regs *regs * When in-kernel, we also print out the stack and code at the * time of the fault.. */ - if (!user_mode_vm(regs)) { + if (!user_mode(regs)) { unsigned int code_prologue = code_bytes * 43 / 64; unsigned int code_len = code_bytes; unsigned char c; u8 *ip; + unsigned long cs_base = get_desc_base(&get_cpu_gdt_table(smp_processor_id())[(0xffff & regs->cs) >> 3]); printk(KERN_EMERG "Stack:\n"); show_stack_log_lvl(NULL, regs, ®s->sp, @@ -117,10 +118,10 @@ void show_registers(struct pt_regs *regs printk(KERN_EMERG "Code: "); - ip = (u8 *)regs->ip - code_prologue; + ip = (u8 *)regs->ip - code_prologue + cs_base; if (ip < (u8 *)PAGE_OFFSET || probe_kernel_address(ip, c)) { /* try starting at IP */ - ip = (u8 *)regs->ip; + ip = (u8 *)regs->ip + cs_base; code_len = code_len - code_prologue + 1; } for (i = 0; i < code_len; i++, ip++) { @@ -129,7 +130,7 @@ void show_registers(struct pt_regs *regs printk(" Bad EIP value."); break; } - if (ip == (u8 *)regs->ip) + if (ip == (u8 *)regs->ip + cs_base) printk("<%02x> ", c); else printk("%02x ", c); @@ -142,6 +143,7 @@ int is_valid_bugaddr(unsigned long ip) { unsigned short ud2; + ip = ktla_ktva(ip); if (ip < PAGE_OFFSET) return 0; if (probe_kernel_address((unsigned short *)ip, ud2)) diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/kernel/efi_32.c linux-2.6.36.4-pax/arch/x86/kernel/efi_32.c --- linux-2.6.36.4/arch/x86/kernel/efi_32.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/kernel/efi_32.c 2010-10-27 22:58:07.000000000 +0200 @@ -38,70 +38,38 @@ */ static unsigned long efi_rt_eflags; -static pgd_t efi_bak_pg_dir_pointer[2]; +static pgd_t __initdata efi_bak_pg_dir_pointer[KERNEL_PGD_PTRS]; -void efi_call_phys_prelog(void) +void __init efi_call_phys_prelog(void) { - unsigned long cr4; - unsigned long temp; struct desc_ptr gdt_descr; local_irq_save(efi_rt_eflags); - /* - * If I don't have PAE, I should just duplicate two entries in page - * directory. If I have PAE, I just need to duplicate one entry in - * page directory. - */ - cr4 = read_cr4_safe(); - if (cr4 & X86_CR4_PAE) { - efi_bak_pg_dir_pointer[0].pgd = - swapper_pg_dir[pgd_index(0)].pgd; - swapper_pg_dir[0].pgd = - swapper_pg_dir[pgd_index(PAGE_OFFSET)].pgd; - } else { - efi_bak_pg_dir_pointer[0].pgd = - swapper_pg_dir[pgd_index(0)].pgd; - efi_bak_pg_dir_pointer[1].pgd = - swapper_pg_dir[pgd_index(0x400000)].pgd; - swapper_pg_dir[pgd_index(0)].pgd = - swapper_pg_dir[pgd_index(PAGE_OFFSET)].pgd; - temp = PAGE_OFFSET + 0x400000; - swapper_pg_dir[pgd_index(0x400000)].pgd = - swapper_pg_dir[pgd_index(temp)].pgd; - } + clone_pgd_range(efi_bak_pg_dir_pointer, swapper_pg_dir, KERNEL_PGD_PTRS); + clone_pgd_range(swapper_pg_dir, swapper_pg_dir + KERNEL_PGD_BOUNDARY, + min_t(unsigned long, KERNEL_PGD_PTRS, KERNEL_PGD_BOUNDARY)); /* * After the lock is released, the original page table is restored. */ __flush_tlb_all(); - gdt_descr.address = __pa(get_cpu_gdt_table(0)); + gdt_descr.address = (struct desc_struct *)__pa(get_cpu_gdt_table(0)); gdt_descr.size = GDT_SIZE - 1; load_gdt(&gdt_descr); } -void efi_call_phys_epilog(void) +void __init efi_call_phys_epilog(void) { - unsigned long cr4; struct desc_ptr gdt_descr; - gdt_descr.address = (unsigned long)get_cpu_gdt_table(0); + gdt_descr.address = get_cpu_gdt_table(0); gdt_descr.size = GDT_SIZE - 1; load_gdt(&gdt_descr); - cr4 = read_cr4_safe(); - - if (cr4 & X86_CR4_PAE) { - swapper_pg_dir[pgd_index(0)].pgd = - efi_bak_pg_dir_pointer[0].pgd; - } else { - swapper_pg_dir[pgd_index(0)].pgd = - efi_bak_pg_dir_pointer[0].pgd; - swapper_pg_dir[pgd_index(0x400000)].pgd = - efi_bak_pg_dir_pointer[1].pgd; - } + clone_pgd_range(swapper_pg_dir, efi_bak_pg_dir_pointer, KERNEL_PGD_PTRS); /* * After the lock is released, the original page table is restored. diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/kernel/efi_stub_32.S linux-2.6.36.4-pax/arch/x86/kernel/efi_stub_32.S --- linux-2.6.36.4/arch/x86/kernel/efi_stub_32.S 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/kernel/efi_stub_32.S 2010-10-27 22:58:07.000000000 +0200 @@ -6,6 +6,7 @@ */ #include +#include #include /* @@ -20,7 +21,7 @@ * service functions will comply with gcc calling convention, too. */ -.text +__INIT ENTRY(efi_call_phys) /* * 0. The function can only be called in Linux kernel. So CS has been @@ -36,9 +37,7 @@ ENTRY(efi_call_phys) * The mapping of lower virtual memory has been created in prelog and * epilog. */ - movl $1f, %edx - subl $__PAGE_OFFSET, %edx - jmp *%edx + jmp 1f-__PAGE_OFFSET 1: /* @@ -47,14 +46,8 @@ ENTRY(efi_call_phys) * parameter 2, ..., param n. To make things easy, we save the return * address of efi_call_phys in a global variable. */ - popl %edx - movl %edx, saved_return_addr - /* get the function pointer into ECX*/ - popl %ecx - movl %ecx, efi_rt_function_ptr - movl $2f, %edx - subl $__PAGE_OFFSET, %edx - pushl %edx + popl (saved_return_addr) + popl (efi_rt_function_ptr) /* * 3. Clear PG bit in %CR0. @@ -73,9 +66,8 @@ ENTRY(efi_call_phys) /* * 5. Call the physical function. */ - jmp *%ecx + call *(efi_rt_function_ptr-__PAGE_OFFSET) -2: /* * 6. After EFI runtime service returns, control will return to * following instruction. We'd better readjust stack pointer first. @@ -88,35 +80,28 @@ ENTRY(efi_call_phys) movl %cr0, %edx orl $0x80000000, %edx movl %edx, %cr0 - jmp 1f -1: + /* * 8. Now restore the virtual mode from flat mode by * adding EIP with PAGE_OFFSET. */ - movl $1f, %edx - jmp *%edx + jmp 1f+__PAGE_OFFSET 1: /* * 9. Balance the stack. And because EAX contain the return value, * we'd better not clobber it. */ - leal efi_rt_function_ptr, %edx - movl (%edx), %ecx - pushl %ecx + pushl (efi_rt_function_ptr) /* - * 10. Push the saved return address onto the stack and return. + * 10. Return to the saved return address. */ - leal saved_return_addr, %edx - movl (%edx), %ecx - pushl %ecx - ret + jmpl *(saved_return_addr) ENDPROC(efi_call_phys) .previous -.data +__INITDATA saved_return_addr: .long 0 efi_rt_function_ptr: diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/kernel/entry_32.S linux-2.6.36.4-pax/arch/x86/kernel/entry_32.S --- linux-2.6.36.4/arch/x86/kernel/entry_32.S 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/kernel/entry_32.S 2010-12-22 13:27:21.000000000 +0100 @@ -186,13 +186,81 @@ /*CFI_REL_OFFSET gs, PT_GS*/ .endm .macro SET_KERNEL_GS reg + +#ifdef CONFIG_CC_STACKPROTECTOR movl $(__KERNEL_STACK_CANARY), \reg +#elif defined(CONFIG_PAX_MEMORY_UDEREF) + movl $(__USER_DS), \reg +#else + xorl \reg, \reg +#endif + movl \reg, %gs .endm #endif /* CONFIG_X86_32_LAZY_GS */ -.macro SAVE_ALL +.macro PAX_EXIT_KERNEL +#ifdef CONFIG_PAX_KERNEXEC +#ifdef CONFIG_PARAVIRT + push %eax; push %ecx +#endif + mov %cs, %esi + cmp $__KERNEXEC_KERNEL_CS, %esi + jnz 2f +#ifdef CONFIG_PARAVIRT + call PARA_INDIRECT(pv_cpu_ops+PV_CPU_read_cr0); + mov %eax, %esi +#else + mov %cr0, %esi +#endif + btr $16, %esi + ljmp $__KERNEL_CS, $1f +1: +#ifdef CONFIG_PARAVIRT + mov %esi, %eax + call PARA_INDIRECT(pv_cpu_ops+PV_CPU_write_cr0); +#else + mov %esi, %cr0 +#endif +2: +#ifdef CONFIG_PARAVIRT + pop %ecx; pop %eax +#endif +#endif +.endm + +.macro PAX_ENTER_KERNEL +#ifdef CONFIG_PAX_KERNEXEC +#ifdef CONFIG_PARAVIRT + push %eax; push %ecx + call PARA_INDIRECT(pv_cpu_ops+PV_CPU_read_cr0) + mov %eax, %esi +#else + mov %cr0, %esi +#endif + bts $16, %esi + jnc 1f + mov %cs, %esi + cmp $__KERNEL_CS, %esi + jz 3f + ljmp $__KERNEL_CS, $3f +1: ljmp $__KERNEXEC_KERNEL_CS, $2f +2: +#ifdef CONFIG_PARAVIRT + mov %esi, %eax + call PARA_INDIRECT(pv_cpu_ops+PV_CPU_write_cr0) +#else + mov %esi, %cr0 +#endif +3: +#ifdef CONFIG_PARAVIRT + pop %ecx; pop %eax +#endif +#endif +.endm + +.macro __SAVE_ALL _DS cld PUSH_GS pushl %fs @@ -225,7 +293,7 @@ pushl %ebx CFI_ADJUST_CFA_OFFSET 4 CFI_REL_OFFSET ebx, 0 - movl $(__USER_DS), %edx + movl $\_DS, %edx movl %edx, %ds movl %edx, %es movl $(__KERNEL_PERCPU), %edx @@ -233,6 +301,15 @@ SET_KERNEL_GS %edx .endm +.macro SAVE_ALL +#if defined(CONFIG_PAX_KERNEXEC) || defined(CONFIG_PAX_PAGEEXEC) || defined(CONFIG_PAX_SEGMEXEC) || defined(CONFIG_PAX_MEMORY_UDEREF) + __SAVE_ALL __KERNEL_DS + PAX_ENTER_KERNEL +#else + __SAVE_ALL __USER_DS +#endif +.endm + .macro RESTORE_INT_REGS popl %ebx CFI_ADJUST_CFA_OFFSET -4 @@ -357,7 +434,15 @@ check_userspace: movb PT_CS(%esp), %al andl $(X86_EFLAGS_VM | SEGMENT_RPL_MASK), %eax cmpl $USER_RPL, %eax + +#ifdef CONFIG_PAX_KERNEXEC + jae resume_userspace + + PAX_EXIT_KERNEL + jmp resume_kernel +#else jb resume_kernel # not returning to v8086 or userspace +#endif ENTRY(resume_userspace) LOCKDEP_SYS_EXIT @@ -423,10 +508,9 @@ sysenter_past_esp: /*CFI_REL_OFFSET cs, 0*/ /* * Push current_thread_info()->sysenter_return to the stack. - * A tiny bit of offset fixup is necessary - 4*4 means the 4 words - * pushed above; +8 corresponds to copy_thread's esp0 setting. */ - pushl (TI_sysenter_return-THREAD_SIZE+8+4*4)(%esp) + GET_THREAD_INFO(%ebp) + pushl TI_sysenter_return(%ebp) CFI_ADJUST_CFA_OFFSET 4 CFI_REL_OFFSET eip, 0 @@ -439,9 +523,19 @@ sysenter_past_esp: * Load the potential sixth argument from user stack. * Careful about security. */ + movl PT_OLDESP(%esp),%ebp + +#ifdef CONFIG_PAX_MEMORY_UDEREF + mov PT_OLDSS(%esp),%ds +1: movl %ds:(%ebp),%ebp + push %ss + pop %ds +#else cmpl $__PAGE_OFFSET-3,%ebp jae syscall_fault 1: movl (%ebp),%ebp +#endif + movl %ebp,PT_EBP(%esp) .section __ex_table,"a" .align 4 @@ -464,12 +558,23 @@ sysenter_do_call: testl $_TIF_ALLWORK_MASK, %ecx jne sysexit_audit sysenter_exit: + +#ifdef CONFIG_PAX_RANDKSTACK + pushl %eax + CFI_ADJUST_CFA_OFFSET 4 + call pax_randomize_kstack + popl %eax + CFI_ADJUST_CFA_OFFSET -4 +#endif + /* if something modifies registers it must also disable sysexit */ movl PT_EIP(%esp), %edx movl PT_OLDESP(%esp), %ecx xorl %ebp,%ebp TRACE_IRQS_ON 1: mov PT_FS(%esp), %fs +2: mov PT_DS(%esp), %ds +3: mov PT_ES(%esp), %es PTGS_TO_GS ENABLE_INTERRUPTS_SYSEXIT @@ -513,11 +618,17 @@ sysexit_audit: CFI_ENDPROC .pushsection .fixup,"ax" -2: movl $0,PT_FS(%esp) +4: movl $0,PT_FS(%esp) + jmp 1b +5: movl $0,PT_DS(%esp) + jmp 1b +6: movl $0,PT_ES(%esp) jmp 1b .section __ex_table,"a" .align 4 - .long 1b,2b + .long 1b,4b + .long 2b,5b + .long 3b,6b .popsection PTGS_TO_GS_EX ENDPROC(ia32_sysenter_target) @@ -551,6 +662,10 @@ syscall_exit: testl $_TIF_ALLWORK_MASK, %ecx # current->work jne syscall_exit_work +#ifdef CONFIG_PAX_RANDKSTACK + call pax_randomize_kstack +#endif + restore_all: TRACE_IRQS_IRET restore_all_notrace: @@ -611,14 +726,21 @@ ldt_ss: * compensating for the offset by changing to the ESPFIX segment with * a base address that matches for the difference. */ -#define GDT_ESPFIX_SS PER_CPU_VAR(gdt_page) + (GDT_ENTRY_ESPFIX_SS * 8) +#define GDT_ESPFIX_SS (GDT_ENTRY_ESPFIX_SS * 8)(%ebx) mov %esp, %edx /* load kernel esp */ mov PT_OLDESP(%esp), %eax /* load userspace esp */ mov %dx, %ax /* eax: new kernel esp */ sub %eax, %edx /* offset (low word is 0) */ +#ifdef CONFIG_SMP + movl PER_CPU_VAR(cpu_number), %ebx + shll $PAGE_SHIFT_asm, %ebx + addl $cpu_gdt_table, %ebx +#else + movl $cpu_gdt_table, %ebx +#endif shr $16, %edx - mov %dl, GDT_ESPFIX_SS + 4 /* bits 16..23 */ - mov %dh, GDT_ESPFIX_SS + 7 /* bits 24..31 */ + mov %dl, 4 + GDT_ESPFIX_SS /* bits 16..23 */ + mov %dh, 7 + GDT_ESPFIX_SS /* bits 24..31 */ pushl $__ESPFIX_SS CFI_ADJUST_CFA_OFFSET 4 push %eax /* new kernel esp */ @@ -655,25 +777,19 @@ work_resched: work_notifysig: # deal with pending signals and # notify-resume requests + movl %esp, %eax #ifdef CONFIG_VM86 testl $X86_EFLAGS_VM, PT_EFLAGS(%esp) - movl %esp, %eax - jne work_notifysig_v86 # returning to kernel-space or + jz 1f # returning to kernel-space or # vm86-space - xorl %edx, %edx - call do_notify_resume - jmp resume_userspace_sig - ALIGN -work_notifysig_v86: pushl %ecx # save ti_flags for do_notify_resume CFI_ADJUST_CFA_OFFSET 4 call save_v86_state # %eax contains pt_regs pointer popl %ecx CFI_ADJUST_CFA_OFFSET -4 movl %eax, %esp -#else - movl %esp, %eax +1: #endif xorl %edx, %edx call do_notify_resume @@ -708,6 +824,10 @@ END(syscall_exit_work) RING0_INT_FRAME # can't unwind into user space anyway syscall_fault: +#ifdef CONFIG_PAX_MEMORY_UDEREF + push %ss + pop %ds +#endif GET_THREAD_INFO(%ebp) movl $-EFAULT,PT_EAX(%esp) jmp resume_userspace @@ -782,6 +902,31 @@ ptregs_clone: addl $8,%esp ret + ALIGN; +ENTRY(kernel_execve) + push %ebp + sub $PT_OLDSS+4,%esp + push %edi + push %ecx + push %eax + lea 3*4(%esp),%edi + mov $PT_OLDSS/4+1,%ecx + xorl %eax,%eax + rep stosl + pop %eax + pop %ecx + pop %edi + movl $X86_EFLAGS_IF,PT_EFLAGS(%esp) + push %esp + call sys_execve + add $4,%esp + GET_THREAD_INFO(%ebp) + test %eax,%eax + jz syscall_exit + add $PT_OLDSS+4,%esp + pop %ebp + ret + .macro FIXUP_ESPFIX_STACK /* * Switch back for ESPFIX stack to the normal zerobased stack @@ -791,8 +936,15 @@ ptregs_clone: * normal stack and adjusts ESP with the matching offset. */ /* fixup the stack */ - mov GDT_ESPFIX_SS + 4, %al /* bits 16..23 */ - mov GDT_ESPFIX_SS + 7, %ah /* bits 24..31 */ +#ifdef CONFIG_SMP + movl PER_CPU_VAR(cpu_number), %ebx + shll $PAGE_SHIFT_asm, %ebx + addl $cpu_gdt_table, %ebx +#else + movl $cpu_gdt_table, %ebx +#endif + mov 4 + GDT_ESPFIX_SS, %al /* bits 16..23 */ + mov 7 + GDT_ESPFIX_SS, %ah /* bits 24..31 */ shl $16, %eax addl %esp, %eax /* the adjusted stack pointer */ pushl $__KERNEL_DS @@ -1275,7 +1427,6 @@ return_to_handler: jmp *%ecx #endif -.section .rodata,"a" #include "syscall_table_32.S" syscall_table_size=(.-sys_call_table) @@ -1332,9 +1483,12 @@ error_code: movl $-1, PT_ORIG_EAX(%esp) # no syscall to restart REG_TO_PTGS %ecx SET_KERNEL_GS %ecx - movl $(__USER_DS), %ecx + movl $(__KERNEL_DS), %ecx movl %ecx, %ds movl %ecx, %es + + PAX_ENTER_KERNEL + TRACE_IRQS_OFF movl %esp,%eax # pt_regs pointer call *%edi @@ -1428,6 +1582,9 @@ nmi_stack_correct: xorl %edx,%edx # zero error code movl %esp,%eax # pt_regs pointer call do_nmi + + PAX_EXIT_KERNEL + jmp restore_all_notrace CFI_ENDPROC @@ -1468,6 +1625,9 @@ nmi_espfix_stack: FIXUP_ESPFIX_STACK # %eax == %esp xorl %edx,%edx # zero error code call do_nmi + + PAX_EXIT_KERNEL + RESTORE_REGS lss 12+4(%esp), %esp # back to espfix stack CFI_ADJUST_CFA_OFFSET -24 diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/kernel/entry_64.S linux-2.6.36.4-pax/arch/x86/kernel/entry_64.S --- linux-2.6.36.4/arch/x86/kernel/entry_64.S 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/kernel/entry_64.S 2011-02-24 15:43:20.000000000 +0100 @@ -53,6 +53,7 @@ #include #include #include +#include /* Avoid __ASSEMBLER__'ifying just for this. */ #include @@ -174,6 +175,201 @@ ENTRY(native_usergs_sysret64) ENDPROC(native_usergs_sysret64) #endif /* CONFIG_PARAVIRT */ + .macro ljmpq sel, off +#if defined(CONFIG_MCORE2) || defined (CONFIG_MATOM) + .byte 0x48; ljmp *1234f(%rip) + .pushsection .rodata + .align 16 + 1234: .quad \off; .word \sel + .popsection +#else + push $\sel + push $\off + lretq +#endif + .endm + + .macro pax_enter_kernel +#ifdef CONFIG_PAX_KERNEXEC + call pax_enter_kernel +#endif + .endm + + .macro pax_exit_kernel +#ifdef CONFIG_PAX_KERNEXEC + call pax_exit_kernel +#endif + .endm + +#ifdef CONFIG_PAX_KERNEXEC +ENTRY(pax_enter_kernel) + push %rdi + +#ifdef CONFIG_PARAVIRT + PV_SAVE_REGS(CLBR_RDI) +#endif + + GET_CR0_INTO_RDI + bts $16,%rdi + jnc 1f + mov %cs,%edi + cmp $__KERNEL_CS,%edi + jz 3f + ljmpq __KERNEL_CS,3f +1: ljmpq __KERNEXEC_KERNEL_CS,2f +2: SET_RDI_INTO_CR0 +3: + +#ifdef CONFIG_PARAVIRT + PV_RESTORE_REGS(CLBR_RDI) +#endif + + pop %rdi + retq +ENDPROC(pax_enter_kernel) + +ENTRY(pax_exit_kernel) + push %rdi + +#ifdef CONFIG_PARAVIRT + PV_SAVE_REGS(CLBR_RDI) +#endif + + mov %cs,%rdi + cmp $__KERNEXEC_KERNEL_CS,%edi + jnz 2f + GET_CR0_INTO_RDI + btr $16,%rdi + ljmpq __KERNEL_CS,1f +1: SET_RDI_INTO_CR0 +2: + +#ifdef CONFIG_PARAVIRT + PV_RESTORE_REGS(CLBR_RDI); +#endif + + pop %rdi + retq +ENDPROC(pax_exit_kernel) +#endif + + .macro pax_enter_kernel_user +#ifdef CONFIG_PAX_MEMORY_UDEREF + call pax_enter_kernel_user +#endif + .endm + + .macro pax_exit_kernel_user +#ifdef CONFIG_PAX_MEMORY_UDEREF + call pax_exit_kernel_user +#endif + .endm + +#ifdef CONFIG_PAX_MEMORY_UDEREF +ENTRY(pax_enter_kernel_user) + push %rdi + push %rbx + +#ifdef CONFIG_PARAVIRT + PV_SAVE_REGS(CLBR_RDI) +#endif + + GET_CR3_INTO_RDI + mov %rdi,%rbx + add $__START_KERNEL_map,%rbx + sub phys_base(%rip),%rbx + +#ifdef CONFIG_PARAVIRT + push %rdi + cmpl $0, pv_info+PARAVIRT_enabled + jz 1f + i = 0 + .rept USER_PGD_PTRS + mov i*8(%rbx),%rsi + mov $0,%sil + lea i*8(%rbx),%rdi + call PARA_INDIRECT(pv_mmu_ops+PV_MMU_set_pgd) + i = i + 1 + .endr + jmp 2f +1: +#endif + + i = 0 + .rept USER_PGD_PTRS + movb $0,i*8(%rbx) + i = i + 1 + .endr + +#ifdef CONFIG_PARAVIRT +2: pop %rdi +#endif + SET_RDI_INTO_CR3 + +#ifdef CONFIG_PAX_KERNEXEC + GET_CR0_INTO_RDI + bts $16,%rdi + SET_RDI_INTO_CR0 +#endif + +#ifdef CONFIG_PARAVIRT + PV_RESTORE_REGS(CLBR_RDI) +#endif + + pop %rbx + pop %rdi + retq +ENDPROC(pax_enter_kernel_user) + +ENTRY(pax_exit_kernel_user) + push %rdi + +#ifdef CONFIG_PARAVIRT + push %rbx + PV_SAVE_REGS(CLBR_RDI) +#endif + +#ifdef CONFIG_PAX_KERNEXEC + GET_CR0_INTO_RDI + btr $16,%rdi + SET_RDI_INTO_CR0 +#endif + + GET_CR3_INTO_RDI + add $__START_KERNEL_map,%rdi + sub phys_base(%rip),%rdi + +#ifdef CONFIG_PARAVIRT + cmpl $0, pv_info+PARAVIRT_enabled + jz 1f + mov %rdi,%rbx + i = 0 + .rept USER_PGD_PTRS + mov i*8(%rbx),%rsi + mov $0x67,%sil + lea i*8(%rbx),%rdi + call PARA_INDIRECT(pv_mmu_ops+PV_MMU_set_pgd) + i = i + 1 + .endr + jmp 2f +1: +#endif + + i = 0 + .rept USER_PGD_PTRS + movb $0x67,i*8(%rdi) + i = i + 1 + .endr + +#ifdef CONFIG_PARAVIRT +2: PV_RESTORE_REGS(CLBR_RDI) + pop %rbx +#endif + + pop %rdi + retq +ENDPROC(pax_exit_kernel_user) +#endif .macro TRACE_IRQS_IRETQ offset=ARGOFFSET #ifdef CONFIG_TRACE_IRQFLAGS @@ -317,7 +513,7 @@ ENTRY(save_args) leaq -ARGOFFSET+16(%rsp),%rdi /* arg1 for handler */ movq_cfi rbp, 8 /* push %rbp */ leaq 8(%rsp), %rbp /* mov %rsp, %ebp */ - testl $3, CS(%rdi) + testb $3, CS(%rdi) je 1f SWAPGS /* @@ -409,7 +605,7 @@ ENTRY(ret_from_fork) RESTORE_REST - testl $3, CS-ARGOFFSET(%rsp) # from kernel_thread? + testb $3, CS-ARGOFFSET(%rsp) # from kernel_thread? je int_ret_from_sys_call testl $_TIF_IA32, TI_flags(%rcx) # 32-bit compat task needs IRET @@ -468,6 +664,7 @@ ENTRY(system_call_after_swapgs) movq %rsp,PER_CPU_VAR(old_rsp) movq PER_CPU_VAR(kernel_stack),%rsp + pax_enter_kernel_user /* * No need to follow this irqs off/on section - it's straight * and short: @@ -502,6 +699,7 @@ sysret_check: andl %edi,%edx jnz sysret_careful CFI_REMEMBER_STATE + pax_exit_kernel_user /* * sysretq will re-enable interrupts: */ @@ -613,7 +811,7 @@ tracesys: GLOBAL(int_ret_from_sys_call) DISABLE_INTERRUPTS(CLBR_NONE) TRACE_IRQS_OFF - testl $3,CS-ARGOFFSET(%rsp) + testb $3,CS-ARGOFFSET(%rsp) je retint_restore_args movl $_TIF_ALLWORK_MASK,%edi /* edi: mask to check */ @@ -800,6 +998,16 @@ END(interrupt) CFI_ADJUST_CFA_OFFSET 10*8 call save_args PARTIAL_FRAME 0 +#ifdef CONFIG_PAX_MEMORY_UDEREF + testb $3, CS(%rdi) + jnz 1f + pax_enter_kernel + jmp 2f +1: pax_enter_kernel_user +2: +#else + pax_enter_kernel +#endif call \func .endm @@ -826,7 +1034,7 @@ ret_from_intr: CFI_ADJUST_CFA_OFFSET -8 exit_intr: GET_THREAD_INFO(%rcx) - testl $3,CS-ARGOFFSET(%rsp) + testb $3,CS-ARGOFFSET(%rsp) je retint_kernel /* Interrupt came from user space */ @@ -848,12 +1056,14 @@ retint_swapgs: /* return to user-space * The iretq could re-enable interrupts: */ DISABLE_INTERRUPTS(CLBR_ANY) + pax_exit_kernel_user TRACE_IRQS_IRETQ SWAPGS jmp restore_args retint_restore_args: /* return to kernel space */ DISABLE_INTERRUPTS(CLBR_ANY) + pax_exit_kernel /* * The iretq could re-enable interrupts: */ @@ -1040,6 +1250,16 @@ ENTRY(\sym) CFI_ADJUST_CFA_OFFSET 15*8 call error_entry DEFAULT_FRAME 0 +#ifdef CONFIG_PAX_MEMORY_UDEREF + testb $3, CS(%rsp) + jnz 1f + pax_enter_kernel + jmp 2f +1: pax_enter_kernel_user +2: +#else + pax_enter_kernel +#endif movq %rsp,%rdi /* pt_regs pointer */ xorl %esi,%esi /* no error code */ call \do_sym @@ -1057,6 +1277,16 @@ ENTRY(\sym) subq $15*8, %rsp call save_paranoid TRACE_IRQS_OFF +#ifdef CONFIG_PAX_MEMORY_UDEREF + testb $3, CS(%rsp) + jnz 1f + pax_enter_kernel + jmp 2f +1: pax_enter_kernel_user +2: +#else + pax_enter_kernel +#endif movq %rsp,%rdi /* pt_regs pointer */ xorl %esi,%esi /* no error code */ call \do_sym @@ -1065,7 +1295,7 @@ ENTRY(\sym) END(\sym) .endm -#define INIT_TSS_IST(x) PER_CPU_VAR(init_tss) + (TSS_ist + ((x) - 1) * 8) +#define INIT_TSS_IST(x) (TSS_ist + ((x) - 1) * 8)(%r12) .macro paranoidzeroentry_ist sym do_sym ist ENTRY(\sym) INTR_FRAME @@ -1075,8 +1305,24 @@ ENTRY(\sym) subq $15*8, %rsp call save_paranoid TRACE_IRQS_OFF +#ifdef CONFIG_PAX_MEMORY_UDEREF + testb $3, CS(%rsp) + jnz 1f + pax_enter_kernel + jmp 2f +1: pax_enter_kernel_user +2: +#else + pax_enter_kernel +#endif movq %rsp,%rdi /* pt_regs pointer */ xorl %esi,%esi /* no error code */ +#ifdef CONFIG_SMP + imul $TSS_size, PER_CPU_VAR(cpu_number), %r12d + lea init_tss(%r12), %r12 +#else + lea init_tss(%rip), %r12 +#endif subq $EXCEPTION_STKSZ, INIT_TSS_IST(\ist) call \do_sym addq $EXCEPTION_STKSZ, INIT_TSS_IST(\ist) @@ -1093,6 +1339,16 @@ ENTRY(\sym) CFI_ADJUST_CFA_OFFSET 15*8 call error_entry DEFAULT_FRAME 0 +#ifdef CONFIG_PAX_MEMORY_UDEREF + testb $3, CS(%rsp) + jnz 1f + pax_enter_kernel + jmp 2f +1: pax_enter_kernel_user +2: +#else + pax_enter_kernel +#endif movq %rsp,%rdi /* pt_regs pointer */ movq ORIG_RAX(%rsp),%rsi /* get error code */ movq $-1,ORIG_RAX(%rsp) /* no syscall to restart */ @@ -1112,6 +1368,16 @@ ENTRY(\sym) call save_paranoid DEFAULT_FRAME 0 TRACE_IRQS_OFF +#ifdef CONFIG_PAX_MEMORY_UDEREF + testb $3, CS(%rsp) + jnz 1f + pax_enter_kernel + jmp 2f +1: pax_enter_kernel_user +2: +#else + pax_enter_kernel +#endif movq %rsp,%rdi /* pt_regs pointer */ movq ORIG_RAX(%rsp),%rsi /* get error code */ movq $-1,ORIG_RAX(%rsp) /* no syscall to restart */ @@ -1373,14 +1639,27 @@ ENTRY(paranoid_exit) TRACE_IRQS_OFF testl %ebx,%ebx /* swapgs needed? */ jnz paranoid_restore - testl $3,CS(%rsp) + testb $3,CS(%rsp) jnz paranoid_userspace +#ifdef CONFIG_PAX_MEMORY_UDEREF + pax_exit_kernel + TRACE_IRQS_IRETQ 0 + SWAPGS_UNSAFE_STACK + RESTORE_ALL 8 + jmp irq_return +#endif paranoid_swapgs: +#ifdef CONFIG_PAX_MEMORY_UDEREF + pax_exit_kernel_user +#else + pax_exit_kernel +#endif TRACE_IRQS_IRETQ 0 SWAPGS_UNSAFE_STACK RESTORE_ALL 8 jmp irq_return paranoid_restore: + pax_exit_kernel TRACE_IRQS_IRETQ 0 RESTORE_ALL 8 jmp irq_return @@ -1438,7 +1717,7 @@ ENTRY(error_entry) movq_cfi r14, R14+8 movq_cfi r15, R15+8 xorl %ebx,%ebx - testl $3,CS+8(%rsp) + testb $3,CS+8(%rsp) je error_kernelspace error_swapgs: SWAPGS @@ -1502,6 +1781,16 @@ ENTRY(nmi) CFI_ADJUST_CFA_OFFSET 15*8 call save_paranoid DEFAULT_FRAME 0 +#ifdef CONFIG_PAX_MEMORY_UDEREF + testb $3, CS(%rsp) + jnz 1f + pax_enter_kernel + jmp 2f +1: pax_enter_kernel_user +2: +#else + pax_enter_kernel +#endif /* paranoidentry do_nmi, 0; without TRACE_IRQS_OFF */ movq %rsp,%rdi movq $-1,%rsi @@ -1512,11 +1801,25 @@ ENTRY(nmi) DISABLE_INTERRUPTS(CLBR_NONE) testl %ebx,%ebx /* swapgs needed? */ jnz nmi_restore - testl $3,CS(%rsp) + testb $3,CS(%rsp) jnz nmi_userspace +#ifdef CONFIG_PAX_MEMORY_UDEREF + pax_exit_kernel + SWAPGS_UNSAFE_STACK + RESTORE_ALL 8 + jmp irq_return +#endif nmi_swapgs: +#ifdef CONFIG_PAX_MEMORY_UDEREF + pax_exit_kernel_user +#else + pax_exit_kernel +#endif SWAPGS_UNSAFE_STACK + RESTORE_ALL 8 + jmp irq_return nmi_restore: + pax_exit_kernel RESTORE_ALL 8 jmp irq_return nmi_userspace: diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/kernel/ftrace.c linux-2.6.36.4-pax/arch/x86/kernel/ftrace.c --- linux-2.6.36.4/arch/x86/kernel/ftrace.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/kernel/ftrace.c 2010-10-27 22:58:07.000000000 +0200 @@ -174,7 +174,9 @@ void ftrace_nmi_enter(void) if (atomic_inc_return(&nmi_running) & MOD_CODE_WRITE_FLAG) { smp_rmb(); + pax_open_kernel(); ftrace_mod_code(); + pax_close_kernel(); atomic_inc(&nmi_update_count); } /* Must have previous changes seen before executions */ @@ -260,7 +262,7 @@ do_ftrace_mod_code(unsigned long ip, voi -static unsigned char ftrace_nop[MCOUNT_INSN_SIZE]; +static unsigned char ftrace_nop[MCOUNT_INSN_SIZE] __read_only; static unsigned char *ftrace_nop_replace(void) { @@ -273,6 +275,8 @@ ftrace_modify_code(unsigned long ip, uns { unsigned char replaced[MCOUNT_INSN_SIZE]; + ip = ktla_ktva(ip); + /* * Note: Due to modules and __init, code can * disappear and change, we need to protect against faulting @@ -329,7 +333,7 @@ int ftrace_update_ftrace_func(ftrace_fun unsigned char old[MCOUNT_INSN_SIZE], *new; int ret; - memcpy(old, &ftrace_call, MCOUNT_INSN_SIZE); + memcpy(old, (void *)ktla_ktva((unsigned long)ftrace_call), MCOUNT_INSN_SIZE); new = ftrace_call_replace(ip, (unsigned long)func); ret = ftrace_modify_code(ip, old, new); @@ -382,15 +386,15 @@ int __init ftrace_dyn_arch_init(void *da switch (faulted) { case 0: pr_info("converting mcount calls to 0f 1f 44 00 00\n"); - memcpy(ftrace_nop, ftrace_test_p6nop, MCOUNT_INSN_SIZE); + memcpy(ftrace_nop, ktla_ktva(ftrace_test_p6nop), MCOUNT_INSN_SIZE); break; case 1: pr_info("converting mcount calls to 66 66 66 66 90\n"); - memcpy(ftrace_nop, ftrace_test_nop5, MCOUNT_INSN_SIZE); + memcpy(ftrace_nop, ktla_ktva(ftrace_test_nop5), MCOUNT_INSN_SIZE); break; case 2: pr_info("converting mcount calls to jmp . + 5\n"); - memcpy(ftrace_nop, ftrace_test_jmp, MCOUNT_INSN_SIZE); + memcpy(ftrace_nop, ktla_ktva(ftrace_test_jmp), MCOUNT_INSN_SIZE); break; } @@ -411,6 +415,8 @@ static int ftrace_mod_jmp(unsigned long { unsigned char code[MCOUNT_INSN_SIZE]; + ip = ktla_ktva(ip); + if (probe_kernel_read(code, (void *)ip, MCOUNT_INSN_SIZE)) return -EFAULT; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/kernel/head32.c linux-2.6.36.4-pax/arch/x86/kernel/head32.c --- linux-2.6.36.4/arch/x86/kernel/head32.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/kernel/head32.c 2010-10-27 22:58:07.000000000 +0200 @@ -17,6 +17,7 @@ #include #include #include +#include static void __init i386_default_early_setup(void) { @@ -40,7 +41,7 @@ void __init i386_start_kernel(void) "EX TRAMPOLINE"); #endif - reserve_early(__pa_symbol(&_text), __pa_symbol(&__bss_stop), "TEXT DATA BSS"); + reserve_early(LOAD_PHYSICAL_ADDR, __pa_symbol(&__bss_stop), "TEXT DATA BSS"); #ifdef CONFIG_BLK_DEV_INITRD /* Reserve INITRD */ diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/kernel/head_32.S linux-2.6.36.4-pax/arch/x86/kernel/head_32.S --- linux-2.6.36.4/arch/x86/kernel/head_32.S 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/kernel/head_32.S 2010-12-16 10:52:28.000000000 +0100 @@ -25,6 +25,12 @@ /* Physical address */ #define pa(X) ((X) - __PAGE_OFFSET) +#ifdef CONFIG_PAX_KERNEXEC +#define ta(X) (X) +#else +#define ta(X) ((X) - __PAGE_OFFSET) +#endif + /* * References to members of the new_cpu_data structure. */ @@ -54,11 +60,7 @@ * and small than max_low_pfn, otherwise will waste some page table entries */ -#if PTRS_PER_PMD > 1 -#define PAGE_TABLE_SIZE(pages) (((pages) / PTRS_PER_PMD) + PTRS_PER_PGD) -#else -#define PAGE_TABLE_SIZE(pages) ((pages) / PTRS_PER_PGD) -#endif +#define PAGE_TABLE_SIZE(pages) ((pages) / PTRS_PER_PTE) /* Enough space to fit pagetables for the low memory linear map */ MAPPING_BEYOND_END = \ @@ -75,6 +77,12 @@ INIT_MAP_SIZE = PAGE_TABLE_SIZE(KERNEL_P RESERVE_BRK(pagetables, INIT_MAP_SIZE) /* + * Real beginning of normal "text" segment + */ +ENTRY(stext) +ENTRY(_stext) + +/* * 32-bit kernel entrypoint; only used by the boot CPU. On entry, * %esi points to the real-mode code as a 32-bit pointer. * CS and DS must be 4 GB flat segments, but we don't depend on @@ -82,6 +90,13 @@ RESERVE_BRK(pagetables, INIT_MAP_SIZE) * can. */ __HEAD + +#ifdef CONFIG_PAX_KERNEXEC + jmp startup_32 +/* PaX: fill first page in .text with int3 to catch NULL derefs in kernel mode */ +.fill PAGE_SIZE-5,1,0xcc +#endif + ENTRY(startup_32) /* test KEEP_SEGMENTS flag to see if the bootloader is asking us to not reload segments */ @@ -99,6 +114,57 @@ ENTRY(startup_32) movl %eax,%gs 2: +#ifdef CONFIG_SMP + movl $pa(cpu_gdt_table),%edi + movl $__per_cpu_load,%eax + movw %ax,__KERNEL_PERCPU + 2(%edi) + rorl $16,%eax + movb %al,__KERNEL_PERCPU + 4(%edi) + movb %ah,__KERNEL_PERCPU + 7(%edi) + movl $__per_cpu_end - 1,%eax + subl $__per_cpu_start,%eax + movw %ax,__KERNEL_PERCPU + 0(%edi) +#endif + +#ifdef CONFIG_PAX_MEMORY_UDEREF + movl $NR_CPUS,%ecx + movl $pa(cpu_gdt_table),%edi +1: + movl $((((__PAGE_OFFSET-1) & 0xf0000000) >> 12) | 0x00c09700),GDT_ENTRY_KERNEL_DS * 8 + 4(%edi) + movl $((((__PAGE_OFFSET-1) & 0xf0000000) >> 12) | 0x00c0fb00),GDT_ENTRY_DEFAULT_USER_CS * 8 + 4(%edi) + movl $((((__PAGE_OFFSET-1) & 0xf0000000) >> 12) | 0x00c0f300),GDT_ENTRY_DEFAULT_USER_DS * 8 + 4(%edi) + addl $PAGE_SIZE_asm,%edi + loop 1b +#endif + +#ifdef CONFIG_PAX_KERNEXEC + movl $pa(boot_gdt),%edi + movl $__LOAD_PHYSICAL_ADDR,%eax + movw %ax,__BOOT_CS + 2(%edi) + rorl $16,%eax + movb %al,__BOOT_CS + 4(%edi) + movb %ah,__BOOT_CS + 7(%edi) + rorl $16,%eax + + ljmp $(__BOOT_CS),$1f +1: + + movl $NR_CPUS,%ecx + movl $pa(cpu_gdt_table),%edi + addl $__PAGE_OFFSET,%eax +1: + movw %ax,__KERNEL_CS + 2(%edi) + movw %ax,__KERNEXEC_KERNEL_CS + 2(%edi) + rorl $16,%eax + movb %al,__KERNEL_CS + 4(%edi) + movb %al,__KERNEXEC_KERNEL_CS + 4(%edi) + movb %ah,__KERNEL_CS + 7(%edi) + movb %ah,__KERNEXEC_KERNEL_CS + 7(%edi) + rorl $16,%eax + addl $PAGE_SIZE_asm,%edi + loop 1b +#endif + /* * Clear BSS first so that there are no surprises... */ @@ -148,9 +214,7 @@ ENTRY(startup_32) cmpl $num_subarch_entries, %eax jae bad_subarch - movl pa(subarch_entries)(,%eax,4), %eax - subl $__PAGE_OFFSET, %eax - jmp *%eax + jmp *pa(subarch_entries)(,%eax,4) bad_subarch: WEAK(lguest_entry) @@ -162,10 +226,10 @@ WEAK(xen_entry) __INITDATA subarch_entries: - .long default_entry /* normal x86/PC */ - .long lguest_entry /* lguest hypervisor */ - .long xen_entry /* Xen hypervisor */ - .long default_entry /* Moorestown MID */ + .long ta(default_entry) /* normal x86/PC */ + .long ta(lguest_entry) /* lguest hypervisor */ + .long ta(xen_entry) /* Xen hypervisor */ + .long ta(default_entry) /* Moorestown MID */ num_subarch_entries = (. - subarch_entries) / 4 .previous #endif /* CONFIG_PARAVIRT */ @@ -226,8 +290,11 @@ default_entry: movl %eax, pa(max_pfn_mapped) /* Do early initialization of the fixmap area */ - movl $pa(swapper_pg_fixmap)+PDE_IDENT_ATTR,%eax - movl %eax,pa(swapper_pg_pmd+0x1000*KPMDS-8) +#ifdef CONFIG_COMPAT_VDSO + movl $pa(swapper_pg_fixmap)+PDE_IDENT_ATTR+_PAGE_USER,pa(swapper_pg_pmd+0x1000*KPMDS-8) +#else + movl $pa(swapper_pg_fixmap)+PDE_IDENT_ATTR,pa(swapper_pg_pmd+0x1000*KPMDS-8) +#endif #else /* Not PAE */ page_pde_offset = (__PAGE_OFFSET >> 20); @@ -257,8 +324,11 @@ page_pde_offset = (__PAGE_OFFSET >> 20); movl %eax, pa(max_pfn_mapped) /* Do early initialization of the fixmap area */ - movl $pa(swapper_pg_fixmap)+PDE_IDENT_ATTR,%eax - movl %eax,pa(swapper_pg_dir+0xffc) +#ifdef CONFIG_COMPAT_VDSO + movl $pa(swapper_pg_fixmap)+PDE_IDENT_ATTR+_PAGE_USER,pa(swapper_pg_dir+0xffc) +#else + movl $pa(swapper_pg_fixmap)+PDE_IDENT_ATTR,pa(swapper_pg_dir+0xffc) +#endif #endif jmp 3f /* @@ -305,6 +375,7 @@ ENTRY(startup_32_smp) orl %edx,%eax movl %eax,%cr4 +#ifdef CONFIG_X86_PAE testb $X86_CR4_PAE, %al # check if PAE is enabled jz 6f @@ -329,6 +400,9 @@ ENTRY(startup_32_smp) /* Make changes effective */ wrmsr + btsl $_PAGE_BIT_NX-32,pa(__supported_pte_mask+4) +#endif + 6: /* @@ -354,9 +428,7 @@ ENTRY(startup_32_smp) #ifdef CONFIG_SMP cmpb $0, ready - jz 1f /* Initial CPU cleans BSS */ - jmp checkCPUtype -1: + jnz checkCPUtype /* Initial CPU cleans BSS */ #endif /* CONFIG_SMP */ /* @@ -434,7 +506,7 @@ is386: movl $2,%ecx # set MP 1: movl $(__KERNEL_DS),%eax # reload all the segment registers movl %eax,%ss # after changing gdt. - movl $(__USER_DS),%eax # DS/ES contains default USER segment +# movl $(__KERNEL_DS),%eax # DS/ES contains default KERNEL segment movl %eax,%ds movl %eax,%es @@ -448,15 +520,22 @@ is386: movl $2,%ecx # set MP */ cmpb $0,ready jne 1f - movl $gdt_page,%eax + movl $cpu_gdt_table,%eax movl $stack_canary,%ecx +#ifdef CONFIG_SMP + addl $__per_cpu_load,%ecx +#endif movw %cx, 8 * GDT_ENTRY_STACK_CANARY + 2(%eax) shrl $16, %ecx movb %cl, 8 * GDT_ENTRY_STACK_CANARY + 4(%eax) movb %ch, 8 * GDT_ENTRY_STACK_CANARY + 7(%eax) 1: -#endif movl $(__KERNEL_STACK_CANARY),%eax +#elif defined(CONFIG_PAX_MEMORY_UDEREF) + movl $(__USER_DS),%eax +#else + xorl %eax,%eax +#endif movl %eax,%gs xorl %eax,%eax # Clear LDT @@ -467,10 +546,6 @@ is386: movl $2,%ecx # set MP #ifdef CONFIG_SMP movb ready, %cl movb $1, ready - cmpb $0,%cl # the first CPU calls start_kernel - je 1f - movl (stack_start), %esp -1: #endif /* CONFIG_SMP */ jmp *(initial_code) @@ -556,22 +631,22 @@ early_page_fault: jmp early_fault early_fault: - cld #ifdef CONFIG_PRINTK + cmpl $1,%ss:early_recursion_flag + je hlt_loop + incl %ss:early_recursion_flag + cld pusha movl $(__KERNEL_DS),%eax movl %eax,%ds movl %eax,%es - cmpl $2,early_recursion_flag - je hlt_loop - incl early_recursion_flag movl %cr2,%eax pushl %eax pushl %edx /* trapno */ pushl $fault_msg call printk +; call dump_stack #endif - call dump_stack hlt_loop: hlt jmp hlt_loop @@ -579,8 +654,11 @@ hlt_loop: /* This is the default interrupt "handler" :-) */ ALIGN ignore_int: - cld #ifdef CONFIG_PRINTK + cmpl $2,%ss:early_recursion_flag + je hlt_loop + incl %ss:early_recursion_flag + cld pushl %eax pushl %ecx pushl %edx @@ -589,9 +667,6 @@ ignore_int: movl $(__KERNEL_DS),%eax movl %eax,%ds movl %eax,%es - cmpl $2,early_recursion_flag - je hlt_loop - incl early_recursion_flag pushl 16(%esp) pushl 24(%esp) pushl 32(%esp) @@ -620,31 +695,47 @@ ENTRY(initial_page_table) /* * BSS section */ -__PAGE_ALIGNED_BSS - .align PAGE_SIZE_asm #ifdef CONFIG_X86_PAE +.section .swapper_pg_pmd,"a",@progbits swapper_pg_pmd: .fill 1024*KPMDS,4,0 #else +.section .swapper_pg_dir,"a",@progbits ENTRY(swapper_pg_dir) .fill 1024,4,0 #endif +.section .swapper_pg_fixmap,"a",@progbits swapper_pg_fixmap: .fill 1024,4,0 #ifdef CONFIG_X86_TRAMPOLINE +.section .trampoline_pg_dir,"a",@progbits ENTRY(trampoline_pg_dir) +#ifdef CONFIG_X86_PAE + .fill 4,8,0 +#else .fill 1024,4,0 #endif +#endif + +.section .empty_zero_page,"a",@progbits ENTRY(empty_zero_page) .fill 4096,1,0 /* + * The IDT has to be page-aligned to simplify the Pentium + * F0 0F bug workaround.. We have a special link segment + * for this. + */ +.section .idt,"a",@progbits +ENTRY(idt_table) + .fill 256,8,0 + +/* * This starts the data section. */ #ifdef CONFIG_X86_PAE -__PAGE_ALIGNED_DATA - /* Page-aligned for the benefit of paravirt? */ - .align PAGE_SIZE_asm +.section .swapper_pg_dir,"a",@progbits + ENTRY(swapper_pg_dir) .long pa(swapper_pg_pmd+PGD_IDENT_ATTR),0 /* low identity map */ # if KPMDS == 3 @@ -663,15 +754,24 @@ ENTRY(swapper_pg_dir) # error "Kernel PMDs should be 1, 2 or 3" # endif .align PAGE_SIZE_asm /* needs to be page-sized too */ + +#ifdef CONFIG_PAX_PER_CPU_PGD +ENTRY(cpu_pgd) + .rept NR_CPUS + .fill 4,8,0 + .endr +#endif + #endif .data ENTRY(stack_start) - .long init_thread_union+THREAD_SIZE + .long init_thread_union+THREAD_SIZE-8 .long __BOOT_DS ready: .byte 0 +.section .rodata,"a",@progbits early_recursion_flag: .long 0 @@ -707,7 +807,7 @@ fault_msg: .word 0 # 32 bit align gdt_desc.address boot_gdt_descr: .word __BOOT_DS+7 - .long boot_gdt - __PAGE_OFFSET + .long pa(boot_gdt) .word 0 # 32-bit align idt_desc.address idt_descr: @@ -718,7 +818,7 @@ idt_descr: .word 0 # 32 bit align gdt_desc.address ENTRY(early_gdt_descr) .word GDT_ENTRIES*8-1 - .long gdt_page /* Overwritten for secondary CPUs */ + .long cpu_gdt_table /* Overwritten for secondary CPUs */ /* * The boot_gdt must mirror the equivalent in setup.S and is @@ -727,5 +827,65 @@ ENTRY(early_gdt_descr) .align L1_CACHE_BYTES ENTRY(boot_gdt) .fill GDT_ENTRY_BOOT_CS,8,0 - .quad 0x00cf9a000000ffff /* kernel 4GB code at 0x00000000 */ - .quad 0x00cf92000000ffff /* kernel 4GB data at 0x00000000 */ + .quad 0x00cf9b000000ffff /* kernel 4GB code at 0x00000000 */ + .quad 0x00cf93000000ffff /* kernel 4GB data at 0x00000000 */ + + .align PAGE_SIZE_asm +ENTRY(cpu_gdt_table) + .rept NR_CPUS + .quad 0x0000000000000000 /* NULL descriptor */ + .quad 0x0000000000000000 /* 0x0b reserved */ + .quad 0x0000000000000000 /* 0x13 reserved */ + .quad 0x0000000000000000 /* 0x1b reserved */ + +#ifdef CONFIG_PAX_KERNEXEC + .quad 0x00cf9b000000ffff /* 0x20 alternate kernel 4GB code at 0x00000000 */ +#else + .quad 0x0000000000000000 /* 0x20 unused */ +#endif + + .quad 0x0000000000000000 /* 0x28 unused */ + .quad 0x0000000000000000 /* 0x33 TLS entry 1 */ + .quad 0x0000000000000000 /* 0x3b TLS entry 2 */ + .quad 0x0000000000000000 /* 0x43 TLS entry 3 */ + .quad 0x0000000000000000 /* 0x4b reserved */ + .quad 0x0000000000000000 /* 0x53 reserved */ + .quad 0x0000000000000000 /* 0x5b reserved */ + + .quad 0x00cf9b000000ffff /* 0x60 kernel 4GB code at 0x00000000 */ + .quad 0x00cf93000000ffff /* 0x68 kernel 4GB data at 0x00000000 */ + .quad 0x00cffb000000ffff /* 0x73 user 4GB code at 0x00000000 */ + .quad 0x00cff3000000ffff /* 0x7b user 4GB data at 0x00000000 */ + + .quad 0x0000000000000000 /* 0x80 TSS descriptor */ + .quad 0x0000000000000000 /* 0x88 LDT descriptor */ + + /* + * Segments used for calling PnP BIOS have byte granularity. + * The code segments and data segments have fixed 64k limits, + * the transfer segment sizes are set at run time. + */ + .quad 0x00409b000000ffff /* 0x90 32-bit code */ + .quad 0x00009b000000ffff /* 0x98 16-bit code */ + .quad 0x000093000000ffff /* 0xa0 16-bit data */ + .quad 0x0000930000000000 /* 0xa8 16-bit data */ + .quad 0x0000930000000000 /* 0xb0 16-bit data */ + + /* + * The APM segments have byte granularity and their bases + * are set at run time. All have 64k limits. + */ + .quad 0x00409b000000ffff /* 0xb8 APM CS code */ + .quad 0x00009b000000ffff /* 0xc0 APM CS 16 code (16 bit) */ + .quad 0x004093000000ffff /* 0xc8 APM DS data */ + + .quad 0x00c0930000000000 /* 0xd0 - ESPFIX SS */ + .quad 0x0040930000000000 /* 0xd8 - PERCPU */ + .quad 0x0040910000000018 /* 0xe0 - STACK_CANARY */ + .quad 0x0000000000000000 /* 0xe8 - PCIBIOS_CS */ + .quad 0x0000000000000000 /* 0xf0 - PCIBIOS_DS */ + .quad 0x0000000000000000 /* 0xf8 - GDT entry 31: double-fault TSS */ + + /* Be sure this is zeroed to avoid false validations in Xen */ + .fill PAGE_SIZE_asm - GDT_SIZE,1,0 + .endr diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/kernel/head_64.S linux-2.6.36.4-pax/arch/x86/kernel/head_64.S --- linux-2.6.36.4/arch/x86/kernel/head_64.S 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/kernel/head_64.S 2010-12-14 21:18:01.000000000 +0100 @@ -19,6 +19,7 @@ #include #include #include +#include #ifdef CONFIG_PARAVIRT #include @@ -38,6 +39,10 @@ L4_PAGE_OFFSET = pgd_index(__PAGE_OFFSET L3_PAGE_OFFSET = pud_index(__PAGE_OFFSET) L4_START_KERNEL = pgd_index(__START_KERNEL_map) L3_START_KERNEL = pud_index(__START_KERNEL_map) +L4_VMALLOC_START = pgd_index(VMALLOC_START) +L3_VMALLOC_START = pud_index(VMALLOC_START) +L4_VMEMMAP_START = pgd_index(VMEMMAP_START) +L3_VMEMMAP_START = pud_index(VMEMMAP_START) .text __HEAD @@ -85,35 +90,22 @@ startup_64: */ addq %rbp, init_level4_pgt + 0(%rip) addq %rbp, init_level4_pgt + (L4_PAGE_OFFSET*8)(%rip) + addq %rbp, init_level4_pgt + (L4_VMALLOC_START*8)(%rip) + addq %rbp, init_level4_pgt + (L4_VMEMMAP_START*8)(%rip) addq %rbp, init_level4_pgt + (L4_START_KERNEL*8)(%rip) addq %rbp, level3_ident_pgt + 0(%rip) +#ifndef CONFIG_XEN + addq %rbp, level3_ident_pgt + 8(%rip) +#endif - addq %rbp, level3_kernel_pgt + (510*8)(%rip) - addq %rbp, level3_kernel_pgt + (511*8)(%rip) + addq %rbp, level3_vmemmap_pgt + (L3_VMEMMAP_START*8)(%rip) - addq %rbp, level2_fixmap_pgt + (506*8)(%rip) + addq %rbp, level3_kernel_pgt + (L3_START_KERNEL*8)(%rip) + addq %rbp, level3_kernel_pgt + (L3_START_KERNEL*8+8)(%rip) - /* Add an Identity mapping if I am above 1G */ - leaq _text(%rip), %rdi - andq $PMD_PAGE_MASK, %rdi - - movq %rdi, %rax - shrq $PUD_SHIFT, %rax - andq $(PTRS_PER_PUD - 1), %rax - jz ident_complete - - leaq (level2_spare_pgt - __START_KERNEL_map + _KERNPG_TABLE)(%rbp), %rdx - leaq level3_ident_pgt(%rip), %rbx - movq %rdx, 0(%rbx, %rax, 8) - - movq %rdi, %rax - shrq $PMD_SHIFT, %rax - andq $(PTRS_PER_PMD - 1), %rax - leaq __PAGE_KERNEL_IDENT_LARGE_EXEC(%rdi), %rdx - leaq level2_spare_pgt(%rip), %rbx - movq %rdx, 0(%rbx, %rax, 8) -ident_complete: + addq %rbp, level2_fixmap_pgt + (506*8)(%rip) + addq %rbp, level2_fixmap_pgt + (507*8)(%rip) /* * Fixup the kernel text+data virtual addresses. Note that @@ -161,8 +153,8 @@ ENTRY(secondary_startup_64) * after the boot processor executes this code. */ - /* Enable PAE mode and PGE */ - movl $(X86_CR4_PAE | X86_CR4_PGE), %eax + /* Enable PAE mode and PSE/PGE */ + movl $(X86_CR4_PSE | X86_CR4_PAE | X86_CR4_PGE), %eax movq %rax, %cr4 /* Setup early boot stage 4 level pagetables. */ @@ -184,9 +176,14 @@ ENTRY(secondary_startup_64) movl $MSR_EFER, %ecx rdmsr btsl $_EFER_SCE, %eax /* Enable System Call */ - btl $20,%edi /* No Execute supported? */ + btl $(X86_FEATURE_NX & 31),%edi /* No Execute supported? */ jnc 1f btsl $_EFER_NX, %eax + leaq init_level4_pgt(%rip), %rdi + btsq $_PAGE_BIT_NX, 8*L4_PAGE_OFFSET(%rdi) + btsq $_PAGE_BIT_NX, 8*L4_VMALLOC_START(%rdi) + btsq $_PAGE_BIT_NX, 8*L4_VMEMMAP_START(%rdi) + btsq $_PAGE_BIT_NX, __supported_pte_mask(%rip) 1: wrmsr /* Make changes effective */ /* Setup cr0 */ @@ -270,7 +267,7 @@ ENTRY(secondary_startup_64) bad_address: jmp bad_address - .section ".init.text","ax" + __INIT #ifdef CONFIG_EARLY_PRINTK .globl early_idt_handlers early_idt_handlers: @@ -315,18 +312,23 @@ ENTRY(early_idt_handler) #endif /* EARLY_PRINTK */ 1: hlt jmp 1b + .previous #ifdef CONFIG_EARLY_PRINTK + __INITDATA early_recursion_flag: .long 0 + .previous + .section .rodata,"a",@progbits early_idt_msg: .asciz "PANIC: early exception %02lx rip %lx:%lx error %lx cr2 %lx\n" early_idt_ripmsg: .asciz "RIP %s\n" -#endif /* CONFIG_EARLY_PRINTK */ .previous +#endif /* CONFIG_EARLY_PRINTK */ + .section .rodata,"a",@progbits #define NEXT_PAGE(name) \ .balign PAGE_SIZE; \ ENTRY(name) @@ -339,7 +341,6 @@ ENTRY(name) i = i + 1 ; \ .endr - .data /* * This default setting generates an ident mapping at address 0x100000 * and a mapping for the kernel that precisely maps virtual address @@ -350,13 +351,36 @@ NEXT_PAGE(init_level4_pgt) .quad level3_ident_pgt - __START_KERNEL_map + _KERNPG_TABLE .org init_level4_pgt + L4_PAGE_OFFSET*8, 0 .quad level3_ident_pgt - __START_KERNEL_map + _KERNPG_TABLE + .org init_level4_pgt + L4_VMALLOC_START*8, 0 + .quad level3_vmalloc_pgt - __START_KERNEL_map + _KERNPG_TABLE + .org init_level4_pgt + L4_VMEMMAP_START*8, 0 + .quad level3_vmemmap_pgt - __START_KERNEL_map + _KERNPG_TABLE .org init_level4_pgt + L4_START_KERNEL*8, 0 /* (2^48-(2*1024*1024*1024))/(2^39) = 511 */ .quad level3_kernel_pgt - __START_KERNEL_map + _PAGE_TABLE +#ifdef CONFIG_PAX_PER_CPU_PGD +NEXT_PAGE(cpu_pgd) + .rept NR_CPUS + .fill 512,8,0 + .endr +#endif + NEXT_PAGE(level3_ident_pgt) .quad level2_ident_pgt - __START_KERNEL_map + _KERNPG_TABLE +#ifdef CONFIG_XEN .fill 511,8,0 +#else + .quad level2_ident_pgt + PAGE_SIZE - __START_KERNEL_map + _KERNPG_TABLE + .fill 510,8,0 +#endif + +NEXT_PAGE(level3_vmalloc_pgt) + .fill 512,8,0 + +NEXT_PAGE(level3_vmemmap_pgt) + .fill L3_VMEMMAP_START,8,0 + .quad level2_vmemmap_pgt - __START_KERNEL_map + _KERNPG_TABLE NEXT_PAGE(level3_kernel_pgt) .fill L3_START_KERNEL,8,0 @@ -364,20 +388,23 @@ NEXT_PAGE(level3_kernel_pgt) .quad level2_kernel_pgt - __START_KERNEL_map + _KERNPG_TABLE .quad level2_fixmap_pgt - __START_KERNEL_map + _PAGE_TABLE +NEXT_PAGE(level2_vmemmap_pgt) + .fill 512,8,0 + NEXT_PAGE(level2_fixmap_pgt) - .fill 506,8,0 - .quad level1_fixmap_pgt - __START_KERNEL_map + _PAGE_TABLE - /* 8MB reserved for vsyscalls + a 2MB hole = 4 + 1 entries */ - .fill 5,8,0 + .fill 507,8,0 + .quad level1_vsyscall_pgt - __START_KERNEL_map + _PAGE_TABLE + /* 6MB reserved for vsyscalls + a 2MB hole = 3 + 1 entries */ + .fill 4,8,0 -NEXT_PAGE(level1_fixmap_pgt) +NEXT_PAGE(level1_vsyscall_pgt) .fill 512,8,0 -NEXT_PAGE(level2_ident_pgt) - /* Since I easily can, map the first 1G. + /* Since I easily can, map the first 2G. * Don't set NX because code runs from these pages. */ - PMDS(0, __PAGE_KERNEL_IDENT_LARGE_EXEC, PTRS_PER_PMD) +NEXT_PAGE(level2_ident_pgt) + PMDS(0, __PAGE_KERNEL_IDENT_LARGE_EXEC, 2*PTRS_PER_PMD) NEXT_PAGE(level2_kernel_pgt) /* @@ -390,33 +417,55 @@ NEXT_PAGE(level2_kernel_pgt) * If you want to increase this then increase MODULES_VADDR * too.) */ - PMDS(0, __PAGE_KERNEL_LARGE_EXEC, - KERNEL_IMAGE_SIZE/PMD_SIZE) - -NEXT_PAGE(level2_spare_pgt) - .fill 512, 8, 0 + PMDS(0, __PAGE_KERNEL_LARGE_EXEC, KERNEL_IMAGE_SIZE/PMD_SIZE) #undef PMDS #undef NEXT_PAGE - .data + .align PAGE_SIZE +ENTRY(cpu_gdt_table) + .rept NR_CPUS + .quad 0x0000000000000000 /* NULL descriptor */ + .quad 0x00cf9b000000ffff /* __KERNEL32_CS */ + .quad 0x00af9b000000ffff /* __KERNEL_CS */ + .quad 0x00cf93000000ffff /* __KERNEL_DS */ + .quad 0x00cffb000000ffff /* __USER32_CS */ + .quad 0x00cff3000000ffff /* __USER_DS, __USER32_DS */ + .quad 0x00affb000000ffff /* __USER_CS */ + +#ifdef CONFIG_PAX_KERNEXEC + .quad 0x00af9b000000ffff /* __KERNEXEC_KERNEL_CS */ +#else + .quad 0x0 /* unused */ +#endif + + .quad 0,0 /* TSS */ + .quad 0,0 /* LDT */ + .quad 0,0,0 /* three TLS descriptors */ + .quad 0x0000f40000000000 /* node/CPU stored in limit */ + /* asm/segment.h:GDT_ENTRIES must match this */ + + /* zero the remaining page */ + .fill PAGE_SIZE / 8 - GDT_ENTRIES,8,0 + .endr + .align 16 .globl early_gdt_descr early_gdt_descr: .word GDT_ENTRIES*8-1 early_gdt_descr_base: - .quad INIT_PER_CPU_VAR(gdt_page) + .quad cpu_gdt_table ENTRY(phys_base) /* This must match the first entry in level2_kernel_pgt */ .quad 0x0000000000000000 #include "../../x86/xen/xen-head.S" - - .section .bss, "aw", @nobits + + .section .rodata,"a",@progbits .align L1_CACHE_BYTES ENTRY(idt_table) - .skip IDT_ENTRIES * 16 + .fill 512,8,0 __PAGE_ALIGNED_BSS .align PAGE_SIZE diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/kernel/i386_ksyms_32.c linux-2.6.36.4-pax/arch/x86/kernel/i386_ksyms_32.c --- linux-2.6.36.4/arch/x86/kernel/i386_ksyms_32.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/kernel/i386_ksyms_32.c 2010-10-27 22:58:07.000000000 +0200 @@ -20,8 +20,12 @@ extern void cmpxchg8b_emu(void); EXPORT_SYMBOL(cmpxchg8b_emu); #endif +EXPORT_SYMBOL_GPL(cpu_gdt_table); + /* Networking helper routines. */ EXPORT_SYMBOL(csum_partial_copy_generic); +EXPORT_SYMBOL(csum_partial_copy_generic_to_user); +EXPORT_SYMBOL(csum_partial_copy_generic_from_user); EXPORT_SYMBOL(__get_user_1); EXPORT_SYMBOL(__get_user_2); @@ -36,3 +40,7 @@ EXPORT_SYMBOL(strstr); EXPORT_SYMBOL(csum_partial); EXPORT_SYMBOL(empty_zero_page); + +#ifdef CONFIG_PAX_KERNEXEC +EXPORT_SYMBOL(__LOAD_PHYSICAL_ADDR); +#endif diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/kernel/init_task.c linux-2.6.36.4-pax/arch/x86/kernel/init_task.c --- linux-2.6.36.4/arch/x86/kernel/init_task.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/kernel/init_task.c 2010-10-27 22:58:07.000000000 +0200 @@ -38,5 +38,5 @@ EXPORT_SYMBOL(init_task); * section. Since TSS's are completely CPU-local, we want them * on exact cacheline boundaries, to eliminate cacheline ping-pong. */ -DEFINE_PER_CPU_SHARED_ALIGNED(struct tss_struct, init_tss) = INIT_TSS; - +struct tss_struct init_tss[NR_CPUS] ____cacheline_internodealigned_in_smp = { [0 ... NR_CPUS-1] = INIT_TSS }; +EXPORT_SYMBOL(init_tss); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/kernel/ioport.c linux-2.6.36.4-pax/arch/x86/kernel/ioport.c --- linux-2.6.36.4/arch/x86/kernel/ioport.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/kernel/ioport.c 2010-10-27 22:58:07.000000000 +0200 @@ -67,7 +67,7 @@ asmlinkage long sys_ioperm(unsigned long * because the ->io_bitmap_max value must match the bitmap * contents: */ - tss = &per_cpu(init_tss, get_cpu()); + tss = init_tss + get_cpu(); set_bitmap(t->io_bitmap_ptr, from, num, !turn_on); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/kernel/irq_32.c linux-2.6.36.4-pax/arch/x86/kernel/irq_32.c --- linux-2.6.36.4/arch/x86/kernel/irq_32.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/kernel/irq_32.c 2010-12-23 00:26:42.000000000 +0100 @@ -94,7 +94,7 @@ execute_on_irq_stack(int overflow, struc return 0; /* build the stack frame on the IRQ stack */ - isp = (u32 *) ((char *)irqctx + sizeof(*irqctx)); + isp = (u32 *) ((char *)irqctx + sizeof(*irqctx) - 8); irqctx->tinfo.task = curctx->tinfo.task; irqctx->tinfo.previous_esp = current_stack_pointer; @@ -106,6 +106,10 @@ execute_on_irq_stack(int overflow, struc (irqctx->tinfo.preempt_count & ~SOFTIRQ_MASK) | (curctx->tinfo.preempt_count & SOFTIRQ_MASK); +#ifdef CONFIG_PAX_MEMORY_UDEREF + __set_fs(irqctx->tinfo.addr_limit); +#endif + if (unlikely(overflow)) call_on_stack(print_stack_overflow, isp); @@ -116,6 +120,11 @@ execute_on_irq_stack(int overflow, struc : "0" (irq), "1" (desc), "2" (isp), "D" (desc->handle_irq) : "memory", "cc", "ecx"); + +#ifdef CONFIG_PAX_MEMORY_UDEREF + __set_fs(curctx->tinfo.addr_limit); +#endif + return 1; } @@ -175,9 +184,18 @@ asmlinkage void do_softirq(void) irqctx->tinfo.previous_esp = current_stack_pointer; /* build the stack frame on the softirq stack */ - isp = (u32 *) ((char *)irqctx + sizeof(*irqctx)); + isp = (u32 *) ((char *)irqctx + sizeof(*irqctx) - 8); + +#ifdef CONFIG_PAX_MEMORY_UDEREF + __set_fs(irqctx->tinfo.addr_limit); +#endif call_on_stack(__do_softirq, isp); + +#ifdef CONFIG_PAX_MEMORY_UDEREF + __set_fs(curctx->addr_limit); +#endif + /* * Shouldnt happen, we returned above if in_interrupt(): */ diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/kernel/kgdb.c linux-2.6.36.4-pax/arch/x86/kernel/kgdb.c --- linux-2.6.36.4/arch/x86/kernel/kgdb.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/kernel/kgdb.c 2010-10-27 22:58:44.000000000 +0200 @@ -123,11 +123,11 @@ char *dbg_get_reg(int regno, void *mem, switch (regno) { #ifdef CONFIG_X86_32 case GDB_SS: - if (!user_mode_vm(regs)) + if (!user_mode(regs)) *(unsigned long *)mem = __KERNEL_DS; break; case GDB_SP: - if (!user_mode_vm(regs)) + if (!user_mode(regs)) *(unsigned long *)mem = kernel_stack_pointer(regs); break; case GDB_GS: @@ -715,7 +715,7 @@ void kgdb_arch_set_pc(struct pt_regs *re regs->ip = ip; } -struct kgdb_arch arch_kgdb_ops = { +const struct kgdb_arch arch_kgdb_ops = { /* Breakpoint instruction: */ .gdb_bpt_instr = { 0xcc }, .flags = KGDB_HW_BREAKPOINT, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/kernel/kprobes.c linux-2.6.36.4-pax/arch/x86/kernel/kprobes.c --- linux-2.6.36.4/arch/x86/kernel/kprobes.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/kernel/kprobes.c 2011-01-12 14:37:59.000000000 +0100 @@ -115,8 +115,11 @@ static void __kprobes __synthesize_relat } __attribute__((packed)) *insn; insn = (struct __arch_relative_insn *)from; + + pax_open_kernel(); insn->raddr = (s32)((long)(to) - ((long)(from) + 5)); insn->op = op; + pax_close_kernel(); } /* Insert a jump instruction at address 'from', which jumps to address 'to'.*/ @@ -153,7 +156,7 @@ static int __kprobes can_boost(kprobe_op kprobe_opcode_t opcode; kprobe_opcode_t *orig_opcodes = opcodes; - if (search_exception_tables((unsigned long)opcodes)) + if (search_exception_tables(ktva_ktla((unsigned long)opcodes))) return 0; /* Page fault may occur on this address. */ retry: @@ -317,7 +320,9 @@ static int __kprobes __copy_instruction( } } insn_get_length(&insn); + pax_open_kernel(); memcpy(dest, insn.kaddr, insn.length); + pax_close_kernel(); #ifdef CONFIG_X86_64 if (insn_rip_relative(&insn)) { @@ -341,7 +346,9 @@ static int __kprobes __copy_instruction( (u8 *) dest; BUG_ON((s64) (s32) newdisp != newdisp); /* Sanity check. */ disp = (u8 *) dest + insn_offset_displacement(&insn); + pax_open_kernel(); *(s32 *) disp = (s32) newdisp; + pax_close_kernel(); } #endif return insn.length; @@ -355,12 +362,12 @@ static void __kprobes arch_copy_kprobe(s */ __copy_instruction(p->ainsn.insn, p->addr, 0); - if (can_boost(p->addr)) + if (can_boost(ktla_ktva(p->addr))) p->ainsn.boostable = 0; else p->ainsn.boostable = -1; - p->opcode = *p->addr; + p->opcode = *(ktla_ktva(p->addr)); } int __kprobes arch_prepare_kprobe(struct kprobe *p) @@ -477,7 +484,7 @@ static void __kprobes setup_singlestep(s * nor set current_kprobe, because it doesn't use single * stepping. */ - regs->ip = (unsigned long)p->ainsn.insn; + regs->ip = ktva_ktla((unsigned long)p->ainsn.insn); preempt_enable_no_resched(); return; } @@ -496,7 +503,7 @@ static void __kprobes setup_singlestep(s if (p->opcode == BREAKPOINT_INSTRUCTION) regs->ip = (unsigned long)p->addr; else - regs->ip = (unsigned long)p->ainsn.insn; + regs->ip = ktva_ktla((unsigned long)p->ainsn.insn); } /* @@ -575,7 +582,7 @@ static int __kprobes kprobe_handler(stru setup_singlestep(p, regs, kcb, 0); return 1; } - } else if (*addr != BREAKPOINT_INSTRUCTION) { + } else if (*(kprobe_opcode_t *)ktla_ktva((unsigned long)addr) != BREAKPOINT_INSTRUCTION) { /* * The breakpoint instruction was removed right * after we hit it. Another cpu has removed @@ -820,7 +827,7 @@ static void __kprobes resume_execution(s struct pt_regs *regs, struct kprobe_ctlblk *kcb) { unsigned long *tos = stack_addr(regs); - unsigned long copy_ip = (unsigned long)p->ainsn.insn; + unsigned long copy_ip = ktva_ktla((unsigned long)p->ainsn.insn); unsigned long orig_ip = (unsigned long)p->addr; kprobe_opcode_t *insn = p->ainsn.insn; @@ -1002,7 +1009,7 @@ int __kprobes kprobe_exceptions_notify(s struct die_args *args = data; int ret = NOTIFY_DONE; - if (args->regs && user_mode_vm(args->regs)) + if (args->regs && user_mode(args->regs)) return ret; switch (val) { @@ -1372,7 +1379,7 @@ int __kprobes arch_prepare_optimized_kpr * Verify if the address gap is in 2GB range, because this uses * a relative jump. */ - rel = (long)op->optinsn.insn - (long)op->kp.addr + RELATIVEJUMP_SIZE; + rel = (long)op->optinsn.insn - ktla_ktva((long)op->kp.addr) + RELATIVEJUMP_SIZE; if (abs(rel) > 0x7fffffff) return -ERANGE; @@ -1393,11 +1400,11 @@ int __kprobes arch_prepare_optimized_kpr synthesize_set_arg1(buf + TMPL_MOVE_IDX, (unsigned long)op); /* Set probe function call */ - synthesize_relcall(buf + TMPL_CALL_IDX, optimized_callback); + synthesize_relcall(buf + TMPL_CALL_IDX, ktla_ktva(optimized_callback)); /* Set returning jmp instruction at the tail of out-of-line buffer */ synthesize_reljump(buf + TMPL_END_IDX + op->optinsn.size, - (u8 *)op->kp.addr + op->optinsn.size); + (u8 *)ktla_ktva(op->kp.addr) + op->optinsn.size); flush_icache_range((unsigned long) buf, (unsigned long) buf + TMPL_END_IDX + @@ -1413,7 +1420,7 @@ int __kprobes arch_optimize_kprobe(struc ((long)op->kp.addr + RELATIVEJUMP_SIZE)); /* Backup instructions which will be replaced by jump address */ - memcpy(op->optinsn.copied_insn, op->kp.addr + INT3_SIZE, + memcpy(op->optinsn.copied_insn, ktla_ktva(op->kp.addr) + INT3_SIZE, RELATIVE_ADDR_SIZE); jmp_code[0] = RELATIVEJUMP_OPCODE; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/kernel/ldt.c linux-2.6.36.4-pax/arch/x86/kernel/ldt.c --- linux-2.6.36.4/arch/x86/kernel/ldt.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/kernel/ldt.c 2011-02-24 17:37:51.000000000 +0100 @@ -67,13 +67,13 @@ static int alloc_ldt(mm_context_t *pc, i if (reload) { #ifdef CONFIG_SMP preempt_disable(); - load_LDT(pc); + load_LDT_nolock(pc); if (!cpumask_equal(mm_cpumask(current->mm), cpumask_of(smp_processor_id()))) smp_call_function(flush_ldt, current->mm, 1); preempt_enable(); #else - load_LDT(pc); + load_LDT_nolock(pc); #endif } if (oldsize) { @@ -95,7 +95,7 @@ static inline int copy_ldt(mm_context_t return err; for (i = 0; i < old->size; i++) - write_ldt_entry(new->ldt, i, old->ldt + i * LDT_ENTRY_SIZE); + write_ldt_entry(new->ldt, i, old->ldt + i); return 0; } @@ -116,6 +116,24 @@ int init_new_context(struct task_struct retval = copy_ldt(&mm->context, &old_mm->context); mutex_unlock(&old_mm->context.lock); } + + if (tsk == current) { + mm->context.vdso = 0; + +#ifdef CONFIG_X86_32 +#if defined(CONFIG_PAX_PAGEEXEC) || defined(CONFIG_PAX_SEGMEXEC) + mm->context.user_cs_base = 0UL; + mm->context.user_cs_limit = ~0UL; + +#if defined(CONFIG_PAX_PAGEEXEC) && defined(CONFIG_SMP) + cpus_clear(mm->context.cpu_user_cs_mask); +#endif + +#endif +#endif + + } + return retval; } @@ -230,6 +248,13 @@ static int write_ldt(void __user *ptr, u } } +#ifdef CONFIG_PAX_SEGMEXEC + if ((mm->pax_flags & MF_PAX_SEGMEXEC) && (ldt_info.contents & MODIFY_LDT_CONTENTS_CODE)) { + error = -EINVAL; + goto out_unlock; + } +#endif + fill_ldt(&ldt, &ldt_info); if (oldmode) ldt.avl = 0; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/kernel/machine_kexec_32.c linux-2.6.36.4-pax/arch/x86/kernel/machine_kexec_32.c --- linux-2.6.36.4/arch/x86/kernel/machine_kexec_32.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/kernel/machine_kexec_32.c 2010-10-27 22:58:07.000000000 +0200 @@ -27,7 +27,7 @@ #include #include -static void set_idt(void *newidt, __u16 limit) +static void set_idt(struct desc_struct *newidt, __u16 limit) { struct desc_ptr curidt; @@ -39,7 +39,7 @@ static void set_idt(void *newidt, __u16 } -static void set_gdt(void *newgdt, __u16 limit) +static void set_gdt(struct desc_struct *newgdt, __u16 limit) { struct desc_ptr curgdt; @@ -217,7 +217,7 @@ void machine_kexec(struct kimage *image) } control_page = page_address(image->control_code_page); - memcpy(control_page, relocate_kernel, KEXEC_CONTROL_CODE_MAX_SIZE); + memcpy(control_page, (void *)ktla_ktva((unsigned long)relocate_kernel), KEXEC_CONTROL_CODE_MAX_SIZE); relocate_kernel_ptr = control_page; page_list[PA_CONTROL_PAGE] = __pa(control_page); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/kernel/microcode_amd.c linux-2.6.36.4-pax/arch/x86/kernel/microcode_amd.c --- linux-2.6.36.4/arch/x86/kernel/microcode_amd.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/kernel/microcode_amd.c 2010-10-27 22:58:44.000000000 +0200 @@ -331,7 +331,7 @@ static void microcode_fini_cpu_amd(int c uci->mc = NULL; } -static struct microcode_ops microcode_amd_ops = { +static const struct microcode_ops microcode_amd_ops = { .request_microcode_user = request_microcode_user, .request_microcode_fw = request_microcode_fw, .collect_cpu_info = collect_cpu_info_amd, @@ -339,7 +339,7 @@ static struct microcode_ops microcode_am .microcode_fini_cpu = microcode_fini_cpu_amd, }; -struct microcode_ops * __init init_amd_microcode(void) +const struct microcode_ops * __init init_amd_microcode(void) { return µcode_amd_ops; } diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/kernel/microcode_core.c linux-2.6.36.4-pax/arch/x86/kernel/microcode_core.c --- linux-2.6.36.4/arch/x86/kernel/microcode_core.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/kernel/microcode_core.c 2010-10-27 22:58:44.000000000 +0200 @@ -92,7 +92,7 @@ MODULE_LICENSE("GPL"); #define MICROCODE_VERSION "2.00" -static struct microcode_ops *microcode_ops; +static const struct microcode_ops *microcode_ops; /* * Synchronization. diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/kernel/microcode_intel.c linux-2.6.36.4-pax/arch/x86/kernel/microcode_intel.c --- linux-2.6.36.4/arch/x86/kernel/microcode_intel.c 2011-01-12 15:14:10.000000000 +0100 +++ linux-2.6.36.4-pax/arch/x86/kernel/microcode_intel.c 2011-01-12 15:14:27.000000000 +0100 @@ -440,13 +440,13 @@ static enum ucode_state request_microcod static int get_ucode_user(void *to, const void *from, size_t n) { - return copy_from_user(to, from, n); + return copy_from_user(to, (__force const void __user *)from, n); } static enum ucode_state request_microcode_user(int cpu, const void __user *buf, size_t size) { - return generic_load_microcode(cpu, (void *)buf, size, &get_ucode_user); + return generic_load_microcode(cpu, (__force void *)buf, size, &get_ucode_user); } static void microcode_fini_cpu(int cpu) @@ -457,7 +457,7 @@ static void microcode_fini_cpu(int cpu) uci->mc = NULL; } -static struct microcode_ops microcode_intel_ops = { +static const struct microcode_ops microcode_intel_ops = { .request_microcode_user = request_microcode_user, .request_microcode_fw = request_microcode_fw, .collect_cpu_info = collect_cpu_info, @@ -465,7 +465,7 @@ static struct microcode_ops microcode_in .microcode_fini_cpu = microcode_fini_cpu, }; -struct microcode_ops * __init init_intel_microcode(void) +const struct microcode_ops * __init init_intel_microcode(void) { return µcode_intel_ops; } diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/kernel/module.c linux-2.6.36.4-pax/arch/x86/kernel/module.c --- linux-2.6.36.4/arch/x86/kernel/module.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/kernel/module.c 2010-10-27 22:58:07.000000000 +0200 @@ -35,7 +35,7 @@ #define DEBUGP(fmt...) #endif -void *module_alloc(unsigned long size) +static void *__module_alloc(unsigned long size, pgprot_t prot) { struct vm_struct *area; @@ -49,8 +49,18 @@ void *module_alloc(unsigned long size) if (!area) return NULL; - return __vmalloc_area(area, GFP_KERNEL | __GFP_HIGHMEM, - PAGE_KERNEL_EXEC); + return __vmalloc_area(area, GFP_KERNEL | __GFP_HIGHMEM | __GFP_ZERO, prot); +} + +void *module_alloc(unsigned long size) +{ + +#ifdef CONFIG_PAX_KERNEXEC + return __module_alloc(size, PAGE_KERNEL); +#else + return __module_alloc(size, PAGE_KERNEL_EXEC); +#endif + } /* Free memory returned from module_alloc */ @@ -59,6 +69,40 @@ void module_free(struct module *mod, voi vfree(module_region); } +#ifdef CONFIG_PAX_KERNEXEC +#ifdef CONFIG_X86_32 +void *module_alloc_exec(unsigned long size) +{ + struct vm_struct *area; + + if (size == 0) + return NULL; + + area = __get_vm_area(size, VM_ALLOC, (unsigned long)&MODULES_EXEC_VADDR, (unsigned long)&MODULES_EXEC_END); + return area ? area->addr : NULL; +} +EXPORT_SYMBOL(module_alloc_exec); + +void module_free_exec(struct module *mod, void *module_region) +{ + vunmap(module_region); +} +EXPORT_SYMBOL(module_free_exec); +#else +void module_free_exec(struct module *mod, void *module_region) +{ + module_free(mod, module_region); +} +EXPORT_SYMBOL(module_free_exec); + +void *module_alloc_exec(unsigned long size) +{ + return __module_alloc(size, PAGE_KERNEL_RX); +} +EXPORT_SYMBOL(module_alloc_exec); +#endif +#endif + /* We don't need anything special. */ int module_frob_arch_sections(Elf_Ehdr *hdr, Elf_Shdr *sechdrs, @@ -78,14 +122,16 @@ int apply_relocate(Elf32_Shdr *sechdrs, unsigned int i; Elf32_Rel *rel = (void *)sechdrs[relsec].sh_addr; Elf32_Sym *sym; - uint32_t *location; + uint32_t *plocation, location; DEBUGP("Applying relocate section %u to %u\n", relsec, sechdrs[relsec].sh_info); for (i = 0; i < sechdrs[relsec].sh_size / sizeof(*rel); i++) { /* This is where to make the change */ - location = (void *)sechdrs[sechdrs[relsec].sh_info].sh_addr - + rel[i].r_offset; + plocation = (void *)sechdrs[sechdrs[relsec].sh_info].sh_addr + rel[i].r_offset; + location = (uint32_t)plocation; + if (sechdrs[sechdrs[relsec].sh_info].sh_flags & SHF_EXECINSTR) + plocation = ktla_ktva((void *)plocation); /* This is the symbol it is referring to. Note that all undefined symbols have been resolved. */ sym = (Elf32_Sym *)sechdrs[symindex].sh_addr @@ -94,11 +140,15 @@ int apply_relocate(Elf32_Shdr *sechdrs, switch (ELF32_R_TYPE(rel[i].r_info)) { case R_386_32: /* We add the value into the location given */ - *location += sym->st_value; + pax_open_kernel(); + *plocation += sym->st_value; + pax_close_kernel(); break; case R_386_PC32: /* Add the value, subtract its postition */ - *location += sym->st_value - (uint32_t)location; + pax_open_kernel(); + *plocation += sym->st_value - location; + pax_close_kernel(); break; default: printk(KERN_ERR "module %s: Unknown relocation: %u\n", @@ -154,21 +204,30 @@ int apply_relocate_add(Elf64_Shdr *sechd case R_X86_64_NONE: break; case R_X86_64_64: + pax_open_kernel(); *(u64 *)loc = val; + pax_close_kernel(); break; case R_X86_64_32: + pax_open_kernel(); *(u32 *)loc = val; + pax_close_kernel(); if (val != *(u32 *)loc) goto overflow; break; case R_X86_64_32S: + pax_open_kernel(); *(s32 *)loc = val; + pax_close_kernel(); if ((s64)val != *(s32 *)loc) goto overflow; break; case R_X86_64_PC32: val -= (u64)loc; + pax_open_kernel(); *(u32 *)loc = val; + pax_close_kernel(); + #if 0 if ((s64)val != *(s32 *)loc) goto overflow; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/kernel/paravirt-spinlocks.c linux-2.6.36.4-pax/arch/x86/kernel/paravirt-spinlocks.c --- linux-2.6.36.4/arch/x86/kernel/paravirt-spinlocks.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/kernel/paravirt-spinlocks.c 2010-10-27 22:58:07.000000000 +0200 @@ -13,7 +13,7 @@ default_spin_lock_flags(arch_spinlock_t arch_spin_lock(lock); } -struct pv_lock_ops pv_lock_ops = { +struct pv_lock_ops pv_lock_ops __read_only = { #ifdef CONFIG_SMP .spin_is_locked = __ticket_spin_is_locked, .spin_is_contended = __ticket_spin_is_contended, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/kernel/paravirt.c linux-2.6.36.4-pax/arch/x86/kernel/paravirt.c --- linux-2.6.36.4/arch/x86/kernel/paravirt.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/kernel/paravirt.c 2010-10-27 22:58:07.000000000 +0200 @@ -122,7 +122,7 @@ unsigned paravirt_patch_jmp(void *insnbu * corresponding structure. */ static void *get_call_destination(u8 type) { - struct paravirt_patch_template tmpl = { + const struct paravirt_patch_template tmpl = { .pv_init_ops = pv_init_ops, .pv_time_ops = pv_time_ops, .pv_cpu_ops = pv_cpu_ops, @@ -145,14 +145,14 @@ unsigned paravirt_patch_default(u8 type, if (opfunc == NULL) /* If there's no function, patch it with a ud2a (BUG) */ ret = paravirt_patch_insns(insnbuf, len, ud2a, ud2a+sizeof(ud2a)); - else if (opfunc == _paravirt_nop) + else if (opfunc == (void *)_paravirt_nop) /* If the operation is a nop, then nop the callsite */ ret = paravirt_patch_nop(); /* identity functions just return their single argument */ - else if (opfunc == _paravirt_ident_32) + else if (opfunc == (void *)_paravirt_ident_32) ret = paravirt_patch_ident_32(insnbuf, len); - else if (opfunc == _paravirt_ident_64) + else if (opfunc == (void *)_paravirt_ident_64) ret = paravirt_patch_ident_64(insnbuf, len); else if (type == PARAVIRT_PATCH(pv_cpu_ops.iret) || @@ -178,7 +178,7 @@ unsigned paravirt_patch_insns(void *insn if (insn_len > len || start == NULL) insn_len = len; else - memcpy(insnbuf, start, insn_len); + memcpy(insnbuf, ktla_ktva(start), insn_len); return insn_len; } @@ -294,22 +294,22 @@ void arch_flush_lazy_mmu_mode(void) preempt_enable(); } -struct pv_info pv_info = { +struct pv_info pv_info __read_only = { .name = "bare hardware", .paravirt_enabled = 0, .kernel_rpl = 0, .shared_kernel_pmd = 1, /* Only used when CONFIG_X86_PAE is set */ }; -struct pv_init_ops pv_init_ops = { +struct pv_init_ops pv_init_ops __read_only = { .patch = native_patch, }; -struct pv_time_ops pv_time_ops = { +struct pv_time_ops pv_time_ops __read_only = { .sched_clock = native_sched_clock, }; -struct pv_irq_ops pv_irq_ops = { +struct pv_irq_ops pv_irq_ops __read_only = { .save_fl = __PV_IS_CALLEE_SAVE(native_save_fl), .restore_fl = __PV_IS_CALLEE_SAVE(native_restore_fl), .irq_disable = __PV_IS_CALLEE_SAVE(native_irq_disable), @@ -321,7 +321,7 @@ struct pv_irq_ops pv_irq_ops = { #endif }; -struct pv_cpu_ops pv_cpu_ops = { +struct pv_cpu_ops pv_cpu_ops __read_only = { .cpuid = native_cpuid, .get_debugreg = native_get_debugreg, .set_debugreg = native_set_debugreg, @@ -382,7 +382,7 @@ struct pv_cpu_ops pv_cpu_ops = { .end_context_switch = paravirt_nop, }; -struct pv_apic_ops pv_apic_ops = { +struct pv_apic_ops pv_apic_ops __read_only = { #ifdef CONFIG_X86_LOCAL_APIC .startup_ipi_hook = paravirt_nop, #endif @@ -396,7 +396,7 @@ struct pv_apic_ops pv_apic_ops = { #define PTE_IDENT __PV_IS_CALLEE_SAVE(_paravirt_ident_64) #endif -struct pv_mmu_ops pv_mmu_ops = { +struct pv_mmu_ops pv_mmu_ops __read_only = { .read_cr2 = native_read_cr2, .write_cr2 = native_write_cr2, @@ -463,6 +463,12 @@ struct pv_mmu_ops pv_mmu_ops = { }, .set_fixmap = native_set_fixmap, + +#ifdef CONFIG_PAX_KERNEXEC + .pax_open_kernel = native_pax_open_kernel, + .pax_close_kernel = native_pax_close_kernel, +#endif + }; EXPORT_SYMBOL_GPL(pv_time_ops); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/kernel/pci-calgary_64.c linux-2.6.36.4-pax/arch/x86/kernel/pci-calgary_64.c --- linux-2.6.36.4/arch/x86/kernel/pci-calgary_64.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/kernel/pci-calgary_64.c 2010-10-27 22:58:44.000000000 +0200 @@ -475,7 +475,7 @@ static void calgary_free_coherent(struct free_pages((unsigned long)vaddr, get_order(size)); } -static struct dma_map_ops calgary_dma_ops = { +static const struct dma_map_ops calgary_dma_ops = { .alloc_coherent = calgary_alloc_coherent, .free_coherent = calgary_free_coherent, .map_sg = calgary_map_sg, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/kernel/pci-dma.c linux-2.6.36.4-pax/arch/x86/kernel/pci-dma.c --- linux-2.6.36.4/arch/x86/kernel/pci-dma.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/kernel/pci-dma.c 2010-10-27 22:58:44.000000000 +0200 @@ -17,7 +17,7 @@ static int forbid_dac __read_mostly; -struct dma_map_ops *dma_ops = &nommu_dma_ops; +const struct dma_map_ops *dma_ops = &nommu_dma_ops; EXPORT_SYMBOL(dma_ops); static int iommu_sac_force __read_mostly; @@ -251,7 +251,7 @@ early_param("iommu", iommu_setup); int dma_supported(struct device *dev, u64 mask) { - struct dma_map_ops *ops = get_dma_ops(dev); + const struct dma_map_ops *ops = get_dma_ops(dev); #ifdef CONFIG_PCI if (mask > 0xffffffff && forbid_dac > 0) { diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/kernel/pci-gart_64.c linux-2.6.36.4-pax/arch/x86/kernel/pci-gart_64.c --- linux-2.6.36.4/arch/x86/kernel/pci-gart_64.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/kernel/pci-gart_64.c 2010-10-27 22:58:44.000000000 +0200 @@ -699,7 +699,7 @@ static __init int init_k8_gatt(struct ag return -1; } -static struct dma_map_ops gart_dma_ops = { +static const struct dma_map_ops gart_dma_ops = { .map_sg = gart_map_sg, .unmap_sg = gart_unmap_sg, .map_page = gart_map_page, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/kernel/pci-nommu.c linux-2.6.36.4-pax/arch/x86/kernel/pci-nommu.c --- linux-2.6.36.4/arch/x86/kernel/pci-nommu.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/kernel/pci-nommu.c 2010-10-27 22:58:44.000000000 +0200 @@ -95,7 +95,7 @@ static void nommu_sync_sg_for_device(str flush_write_buffers(); } -struct dma_map_ops nommu_dma_ops = { +const struct dma_map_ops nommu_dma_ops = { .alloc_coherent = dma_generic_alloc_coherent, .free_coherent = nommu_free_coherent, .map_sg = nommu_map_sg, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/kernel/pci-swiotlb.c linux-2.6.36.4-pax/arch/x86/kernel/pci-swiotlb.c --- linux-2.6.36.4/arch/x86/kernel/pci-swiotlb.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/kernel/pci-swiotlb.c 2010-10-27 22:58:44.000000000 +0200 @@ -25,7 +25,7 @@ static void *x86_swiotlb_alloc_coherent( return swiotlb_alloc_coherent(hwdev, size, dma_handle, flags); } -static struct dma_map_ops swiotlb_dma_ops = { +static const struct dma_map_ops swiotlb_dma_ops = { .mapping_error = swiotlb_dma_mapping_error, .alloc_coherent = x86_swiotlb_alloc_coherent, .free_coherent = swiotlb_free_coherent, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/kernel/process.c linux-2.6.36.4-pax/arch/x86/kernel/process.c --- linux-2.6.36.4/arch/x86/kernel/process.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/kernel/process.c 2010-12-18 16:47:12.000000000 +0100 @@ -74,7 +74,7 @@ void exit_thread(void) unsigned long *bp = t->io_bitmap_ptr; if (bp) { - struct tss_struct *tss = &per_cpu(init_tss, get_cpu()); + struct tss_struct *tss = init_tss + get_cpu(); t->io_bitmap_ptr = NULL; clear_thread_flag(TIF_IO_BITMAP); @@ -108,7 +108,7 @@ void show_regs_common(void) printk(KERN_CONT "\n"); printk(KERN_DEFAULT "Pid: %d, comm: %.20s %s %s %.*s %s/%s\n", - current->pid, current->comm, print_tainted(), + task_pid_nr(current), current->comm, print_tainted(), init_utsname()->release, (int)strcspn(init_utsname()->version, " "), init_utsname()->version, board, product); @@ -118,6 +118,9 @@ void flush_thread(void) { struct task_struct *tsk = current; +#if defined(CONFIG_X86_32) && !defined(CONFIG_CC_STACKPROTECTOR) && !defined(CONFIG_PAX_MEMORY_UDEREF) + loadsegment(gs, 0); +#endif flush_ptrace_hw_breakpoint(tsk); memset(tsk->thread.tls_array, 0, sizeof(tsk->thread.tls_array)); /* @@ -280,10 +283,10 @@ int kernel_thread(int (*fn)(void *), voi regs.di = (unsigned long) arg; #ifdef CONFIG_X86_32 - regs.ds = __USER_DS; - regs.es = __USER_DS; + regs.ds = __KERNEL_DS; + regs.es = __KERNEL_DS; regs.fs = __KERNEL_PERCPU; - regs.gs = __KERNEL_STACK_CANARY; + savesegment(gs, regs.gs); #else regs.ss = __KERNEL_DS; #endif @@ -658,17 +661,3 @@ static int __init idle_setup(char *str) return 0; } early_param("idle", idle_setup); - -unsigned long arch_align_stack(unsigned long sp) -{ - if (!(current->personality & ADDR_NO_RANDOMIZE) && randomize_va_space) - sp -= get_random_int() % 8192; - return sp & ~0xf; -} - -unsigned long arch_randomize_brk(struct mm_struct *mm) -{ - unsigned long range_end = mm->brk + 0x02000000; - return randomize_range(mm->brk, range_end, 0) ? : mm->brk; -} - diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/kernel/process_32.c linux-2.6.36.4-pax/arch/x86/kernel/process_32.c --- linux-2.6.36.4/arch/x86/kernel/process_32.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/kernel/process_32.c 2010-12-20 19:09:39.000000000 +0100 @@ -67,6 +67,7 @@ asmlinkage void ret_from_fork(void) __as unsigned long thread_saved_pc(struct task_struct *tsk) { return ((unsigned long *)tsk->thread.sp)[3]; +//XXX return tsk->thread.eip; } #ifndef CONFIG_SMP @@ -130,15 +131,14 @@ void __show_regs(struct pt_regs *regs, i unsigned long sp; unsigned short ss, gs; - if (user_mode_vm(regs)) { + if (user_mode(regs)) { sp = regs->sp; ss = regs->ss & 0xffff; - gs = get_user_gs(regs); } else { sp = kernel_stack_pointer(regs); savesegment(ss, ss); - savesegment(gs, gs); } + gs = get_user_gs(regs); show_regs_common(); @@ -200,7 +200,7 @@ int copy_thread(unsigned long clone_flag struct task_struct *tsk; int err; - childregs = task_pt_regs(p); + childregs = task_stack_page(p) + THREAD_SIZE - sizeof(struct pt_regs) - 8; *childregs = *regs; childregs->ax = 0; childregs->sp = sp; @@ -297,7 +297,7 @@ __switch_to(struct task_struct *prev_p, struct thread_struct *prev = &prev_p->thread, *next = &next_p->thread; int cpu = smp_processor_id(); - struct tss_struct *tss = &per_cpu(init_tss, cpu); + struct tss_struct *tss = init_tss + cpu; bool preload_fpu; /* never put a printk in __switch_to... printk() calls wake_up*() indirectly */ @@ -332,6 +332,10 @@ __switch_to(struct task_struct *prev_p, */ lazy_save_gs(prev->gs); +#ifdef CONFIG_PAX_MEMORY_UDEREF + __set_fs(task_thread_info(next_p)->addr_limit); +#endif + /* * Load the per-thread Thread-Local Storage descriptor. */ @@ -408,3 +412,27 @@ unsigned long get_wchan(struct task_stru return 0; } +#ifdef CONFIG_PAX_RANDKSTACK +asmlinkage void pax_randomize_kstack(void) +{ + struct thread_struct *thread = ¤t->thread; + unsigned long time; + + if (!randomize_va_space) + return; + + rdtscl(time); + + /* P4 seems to return a 0 LSB, ignore it */ +#ifdef CONFIG_MPENTIUM4 + time &= 0x1EUL; + time <<= 2; +#else + time &= 0xFUL; + time <<= 3; +#endif + + thread->sp0 ^= time; + load_sp0(init_tss + smp_processor_id(), thread); +} +#endif diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/kernel/process_64.c linux-2.6.36.4-pax/arch/x86/kernel/process_64.c --- linux-2.6.36.4/arch/x86/kernel/process_64.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/kernel/process_64.c 2010-10-27 22:58:07.000000000 +0200 @@ -89,7 +89,7 @@ static void __exit_idle(void) void exit_idle(void) { /* idle loop has pid 0 */ - if (current->pid) + if (task_pid_nr(current)) return; __exit_idle(); } @@ -380,7 +380,7 @@ __switch_to(struct task_struct *prev_p, struct thread_struct *prev = &prev_p->thread; struct thread_struct *next = &next_p->thread; int cpu = smp_processor_id(); - struct tss_struct *tss = &per_cpu(init_tss, cpu); + struct tss_struct *tss = init_tss + cpu; unsigned fsindex, gsindex; bool preload_fpu; @@ -533,12 +533,11 @@ unsigned long get_wchan(struct task_stru if (!p || p == current || p->state == TASK_RUNNING) return 0; stack = (unsigned long)task_stack_page(p); - if (p->thread.sp < stack || p->thread.sp >= stack+THREAD_SIZE) + if (p->thread.sp < stack || p->thread.sp > stack+THREAD_SIZE-8-sizeof(u64)) return 0; fp = *(u64 *)(p->thread.sp); do { - if (fp < (unsigned long)stack || - fp >= (unsigned long)stack+THREAD_SIZE) + if (fp < stack || fp > stack+THREAD_SIZE-8-sizeof(u64)) return 0; ip = *(u64 *)(fp+8); if (!in_sched_functions(ip)) diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/kernel/ptrace.c linux-2.6.36.4-pax/arch/x86/kernel/ptrace.c --- linux-2.6.36.4/arch/x86/kernel/ptrace.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/kernel/ptrace.c 2011-02-24 15:19:39.000000000 +0100 @@ -804,7 +804,7 @@ static const struct user_regset_view use long arch_ptrace(struct task_struct *child, long request, long addr, long data) { int ret; - unsigned long __user *datap = (unsigned long __user *)data; + unsigned long __user *datap = (__force unsigned long __user *)data; switch (request) { /* read the word at location addr in the USER area. */ @@ -891,14 +891,14 @@ long arch_ptrace(struct task_struct *chi if (addr < 0) return -EIO; ret = do_get_thread_area(child, addr, - (struct user_desc __user *) data); + (__force struct user_desc __user *) data); break; case PTRACE_SET_THREAD_AREA: if (addr < 0) return -EIO; ret = do_set_thread_area(child, addr, - (struct user_desc __user *) data, 0); + (__force struct user_desc __user *) data, 0); break; #endif @@ -1315,7 +1315,7 @@ static void fill_sigtrap_info(struct tas memset(info, 0, sizeof(*info)); info->si_signo = SIGTRAP; info->si_code = si_code; - info->si_addr = user_mode_vm(regs) ? (void __user *)regs->ip : NULL; + info->si_addr = user_mode(regs) ? (__force void __user *)regs->ip : NULL; } void user_single_step_siginfo(struct task_struct *tsk, @@ -1348,7 +1348,7 @@ void send_sigtrap(struct task_struct *ts * We must return the syscall number to actually look up in the table. * This can be -1L to skip running any syscall at all. */ -asmregparm long syscall_trace_enter(struct pt_regs *regs) +long syscall_trace_enter(struct pt_regs *regs) { long ret = 0; @@ -1393,7 +1393,7 @@ asmregparm long syscall_trace_enter(stru return ret ?: regs->orig_ax; } -asmregparm void syscall_trace_leave(struct pt_regs *regs) +void syscall_trace_leave(struct pt_regs *regs) { bool step; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/kernel/reboot.c linux-2.6.36.4-pax/arch/x86/kernel/reboot.c --- linux-2.6.36.4/arch/x86/kernel/reboot.c 2010-12-14 21:09:00.000000000 +0100 +++ linux-2.6.36.4-pax/arch/x86/kernel/reboot.c 2010-12-14 21:09:08.000000000 +0100 @@ -33,7 +33,7 @@ void (*pm_power_off)(void); EXPORT_SYMBOL(pm_power_off); static const struct desc_ptr no_idt = {}; -static int reboot_mode; +static unsigned short reboot_mode; enum reboot_type reboot_type = BOOT_KBD; int reboot_force; @@ -284,7 +284,7 @@ static struct dmi_system_id __initdata r DMI_MATCH(DMI_BOARD_NAME, "P4S800"), }, }, - { } + { NULL, NULL, {{0, {0}}}, NULL} }; static int __init reboot_init(void) @@ -300,12 +300,12 @@ core_initcall(reboot_init); controller to pulse the CPU reset line, which is more thorough, but doesn't work with at least one type of 486 motherboard. It is easy to stop this code working; hence the copious comments. */ -static const unsigned long long -real_mode_gdt_entries [3] = +static struct desc_struct +real_mode_gdt_entries [3] __read_only = { - 0x0000000000000000ULL, /* Null descriptor */ - 0x00009b000000ffffULL, /* 16-bit real-mode 64k code at 0x00000000 */ - 0x000093000100ffffULL /* 16-bit real-mode 64k data at 0x00000100 */ + GDT_ENTRY_INIT(0, 0, 0), /* Null descriptor */ + GDT_ENTRY_INIT(0x9b, 0, 0xffff), /* 16-bit real-mode 64k code at 0x00000000 */ + GDT_ENTRY_INIT(0x93, 0x100, 0xffff) /* 16-bit real-mode 64k data at 0x00000100 */ }; static const struct desc_ptr @@ -354,7 +354,7 @@ static const unsigned char jump_to_bios * specified by the code and length parameters. * We assume that length will aways be less that 100! */ -void machine_real_restart(const unsigned char *code, int length) +void machine_real_restart(const unsigned char *code, unsigned int length) { local_irq_disable(); @@ -374,8 +374,8 @@ void machine_real_restart(const unsigned /* Remap the kernel at virtual address zero, as well as offset zero from the kernel segment. This assumes the kernel segment starts at virtual address PAGE_OFFSET. */ - memcpy(swapper_pg_dir, swapper_pg_dir + KERNEL_PGD_BOUNDARY, - sizeof(swapper_pg_dir [0]) * KERNEL_PGD_PTRS); + clone_pgd_range(swapper_pg_dir, swapper_pg_dir + KERNEL_PGD_BOUNDARY, + min_t(unsigned long, KERNEL_PGD_PTRS, KERNEL_PGD_BOUNDARY)); /* * Use `swapper_pg_dir' as our page directory. @@ -387,16 +387,15 @@ void machine_real_restart(const unsigned boot)". This seems like a fairly standard thing that gets set by REBOOT.COM programs, and the previous reset routine did this too. */ - *((unsigned short *)0x472) = reboot_mode; + *(unsigned short *)(__va(0x472)) = reboot_mode; /* For the switch to real mode, copy some code to low memory. It has to be in the first 64k because it is running in 16-bit mode, and it has to have the same physical and virtual address, because it turns off paging. Copy it near the end of the first page, out of the way of BIOS variables. */ - memcpy((void *)(0x1000 - sizeof(real_mode_switch) - 100), - real_mode_switch, sizeof (real_mode_switch)); - memcpy((void *)(0x1000 - 100), code, length); + memcpy(__va(0x1000 - sizeof (real_mode_switch) - 100), real_mode_switch, sizeof (real_mode_switch)); + memcpy(__va(0x1000 - 100), code, length); /* Set up the IDT for real mode. */ load_idt(&real_mode_idt); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/kernel/setup.c linux-2.6.36.4-pax/arch/x86/kernel/setup.c --- linux-2.6.36.4/arch/x86/kernel/setup.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/kernel/setup.c 2010-10-27 22:58:07.000000000 +0200 @@ -705,7 +705,7 @@ static void __init trim_bios_range(void) * area (640->1Mb) as ram even though it is not. * take them out. */ - e820_remove_range(BIOS_BEGIN, BIOS_END - BIOS_BEGIN, E820_RAM, 1); + e820_remove_range(ISA_START_ADDRESS, ISA_END_ADDRESS - ISA_START_ADDRESS, E820_RAM, 1); sanitize_e820_map(e820.map, ARRAY_SIZE(e820.map), &e820.nr_map); } @@ -797,14 +797,14 @@ void __init setup_arch(char **cmdline_p) if (!boot_params.hdr.root_flags) root_mountflags &= ~MS_RDONLY; - init_mm.start_code = (unsigned long) _text; - init_mm.end_code = (unsigned long) _etext; + init_mm.start_code = ktla_ktva((unsigned long) _text); + init_mm.end_code = ktla_ktva((unsigned long) _etext); init_mm.end_data = (unsigned long) _edata; init_mm.brk = _brk_end; - code_resource.start = virt_to_phys(_text); - code_resource.end = virt_to_phys(_etext)-1; - data_resource.start = virt_to_phys(_etext); + code_resource.start = virt_to_phys(ktla_ktva(_text)); + code_resource.end = virt_to_phys(ktla_ktva(_etext))-1; + data_resource.start = virt_to_phys(_sdata); data_resource.end = virt_to_phys(_edata)-1; bss_resource.start = virt_to_phys(&__bss_start); bss_resource.end = virt_to_phys(&__bss_stop)-1; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/kernel/setup_percpu.c linux-2.6.36.4-pax/arch/x86/kernel/setup_percpu.c --- linux-2.6.36.4/arch/x86/kernel/setup_percpu.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/kernel/setup_percpu.c 2010-10-27 22:58:07.000000000 +0200 @@ -21,19 +21,17 @@ #include #include -DEFINE_PER_CPU(int, cpu_number); +#ifdef CONFIG_SMP +DEFINE_PER_CPU(unsigned int, cpu_number); EXPORT_PER_CPU_SYMBOL(cpu_number); +#endif -#ifdef CONFIG_X86_64 #define BOOT_PERCPU_OFFSET ((unsigned long)__per_cpu_load) -#else -#define BOOT_PERCPU_OFFSET 0 -#endif DEFINE_PER_CPU(unsigned long, this_cpu_off) = BOOT_PERCPU_OFFSET; EXPORT_PER_CPU_SYMBOL(this_cpu_off); -unsigned long __per_cpu_offset[NR_CPUS] __read_mostly = { +unsigned long __per_cpu_offset[NR_CPUS] __read_only = { [0 ... NR_CPUS-1] = BOOT_PERCPU_OFFSET, }; EXPORT_SYMBOL(__per_cpu_offset); @@ -161,10 +159,10 @@ static inline void setup_percpu_segment( { #ifdef CONFIG_X86_32 struct desc_struct gdt; + unsigned long base = per_cpu_offset(cpu); - pack_descriptor(&gdt, per_cpu_offset(cpu), 0xFFFFF, - 0x2 | DESCTYPE_S, 0x8); - gdt.s = 1; + pack_descriptor(&gdt, base, (VMALLOC_END - base - 1) >> PAGE_SHIFT, + 0x83 | DESCTYPE_S, 0xC); write_gdt_entry(get_cpu_gdt_table(cpu), GDT_ENTRY_PERCPU, &gdt, DESCTYPE_S); #endif @@ -213,6 +211,11 @@ void __init setup_per_cpu_areas(void) /* alrighty, percpu areas up and running */ delta = (unsigned long)pcpu_base_addr - (unsigned long)__per_cpu_start; for_each_possible_cpu(cpu) { +#ifdef CONFIG_CC_STACKPROTECTOR +#ifdef CONFIG_x86_32 + unsigned long canary = per_cpu(stack_canary, cpu); +#endif +#endif per_cpu_offset(cpu) = delta + pcpu_unit_offsets[cpu]; per_cpu(this_cpu_off, cpu) = per_cpu_offset(cpu); per_cpu(cpu_number, cpu) = cpu; @@ -249,6 +252,12 @@ void __init setup_per_cpu_areas(void) set_cpu_numa_node(cpu, early_cpu_to_node(cpu)); #endif #endif +#ifdef CONFIG_CC_STACKPROTECTOR +#ifdef CONFIG_x86_32 + if (cpu == boot_cpu_id) + per_cpu(stack_canary, cpu) = canary; +#endif +#endif /* * Up to this point, the boot CPU has been using .init.data * area. Reload any changed state for the boot CPU. diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/kernel/signal.c linux-2.6.36.4-pax/arch/x86/kernel/signal.c --- linux-2.6.36.4/arch/x86/kernel/signal.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/kernel/signal.c 2010-10-27 22:58:07.000000000 +0200 @@ -198,7 +198,7 @@ static unsigned long align_sigframe(unsi * Align the stack pointer according to the i386 ABI, * i.e. so that on function entry ((sp + 4) & 15) == 0. */ - sp = ((sp + 4) & -16ul) - 4; + sp = ((sp - 12) & -16ul) - 4; #else /* !CONFIG_X86_32 */ sp = round_down(sp, 16) - 8; #endif @@ -249,11 +249,11 @@ get_sigframe(struct k_sigaction *ka, str * Return an always-bogus address instead so we will die with SIGSEGV. */ if (onsigstack && !likely(on_sig_stack(sp))) - return (void __user *)-1L; + return (__force void __user *)-1L; /* save i387 state */ if (used_math() && save_i387_xstate(*fpstate) < 0) - return (void __user *)-1L; + return (__force void __user *)-1L; return (void __user *)sp; } @@ -308,9 +308,9 @@ __setup_frame(int sig, struct k_sigactio } if (current->mm->context.vdso) - restorer = VDSO32_SYMBOL(current->mm->context.vdso, sigreturn); + restorer = (__force void __user *)VDSO32_SYMBOL(current->mm->context.vdso, sigreturn); else - restorer = &frame->retcode; + restorer = (void __user *)&frame->retcode; if (ka->sa.sa_flags & SA_RESTORER) restorer = ka->sa.sa_restorer; @@ -324,7 +324,7 @@ __setup_frame(int sig, struct k_sigactio * reasons and because gdb uses it as a signature to notice * signal handler stack frames. */ - err |= __put_user(*((u64 *)&retcode), (u64 *)frame->retcode); + err |= __put_user(*((u64 *)&retcode), (u64 __user *)frame->retcode); if (err) return -EFAULT; @@ -378,7 +378,10 @@ static int __setup_rt_frame(int sig, str err |= __copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set)); /* Set up to return from userspace. */ - restorer = VDSO32_SYMBOL(current->mm->context.vdso, rt_sigreturn); + if (current->mm->context.vdso) + restorer = (__force void __user *)VDSO32_SYMBOL(current->mm->context.vdso, rt_sigreturn); + else + restorer = (void __user *)&frame->retcode; if (ka->sa.sa_flags & SA_RESTORER) restorer = ka->sa.sa_restorer; put_user_ex(restorer, &frame->pretcode); @@ -390,7 +393,7 @@ static int __setup_rt_frame(int sig, str * reasons and because gdb uses it as a signature to notice * signal handler stack frames. */ - put_user_ex(*((u64 *)&rt_retcode), (u64 *)frame->retcode); + put_user_ex(*((u64 *)&rt_retcode), (u64 __user *)frame->retcode); } put_user_catch(err); if (err) @@ -780,7 +783,7 @@ static void do_signal(struct pt_regs *re * X86_32: vm86 regs switched out by assembly code before reaching * here, so testing against kernel CS suffices. */ - if (!user_mode(regs)) + if (!user_mode_novm(regs)) return; if (current_thread_info()->status & TS_RESTORE_SIGMASK) diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/kernel/smpboot.c linux-2.6.36.4-pax/arch/x86/kernel/smpboot.c --- linux-2.6.36.4/arch/x86/kernel/smpboot.c 2011-01-12 15:14:10.000000000 +0100 +++ linux-2.6.36.4-pax/arch/x86/kernel/smpboot.c 2011-01-12 15:14:27.000000000 +0100 @@ -782,7 +782,11 @@ do_rest: (unsigned long)task_stack_page(c_idle.idle) - KERNEL_STACK_OFFSET + THREAD_SIZE; #endif + + pax_open_kernel(); early_gdt_descr.address = (unsigned long)get_cpu_gdt_table(cpu); + pax_close_kernel(); + initial_code = (unsigned long)start_secondary; stack_start.sp = (void *) c_idle.idle->thread.sp; @@ -922,6 +926,12 @@ int __cpuinit native_cpu_up(unsigned int per_cpu(cpu_state, cpu) = CPU_UP_PREPARE; +#ifdef CONFIG_PAX_PER_CPU_PGD + clone_pgd_range(get_cpu_pgd(cpu) + KERNEL_PGD_BOUNDARY, + swapper_pg_dir + KERNEL_PGD_BOUNDARY, + KERNEL_PGD_PTRS); +#endif + err = do_boot_cpu(apicid, cpu); if (err) { diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/kernel/step.c linux-2.6.36.4-pax/arch/x86/kernel/step.c --- linux-2.6.36.4/arch/x86/kernel/step.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/kernel/step.c 2011-02-24 17:37:51.000000000 +0100 @@ -27,10 +27,10 @@ unsigned long convert_ip_to_linear(struc struct desc_struct *desc; unsigned long base; - seg &= ~7UL; + seg >>= 3; mutex_lock(&child->mm->context.lock); - if (unlikely((seg >> 3) >= child->mm->context.size)) + if (unlikely(seg >= child->mm->context.size)) addr = -1L; /* bogus selector, access would fault */ else { desc = child->mm->context.ldt + seg; @@ -42,7 +42,8 @@ unsigned long convert_ip_to_linear(struc addr += base; } mutex_unlock(&child->mm->context.lock); - } + } else if (seg == __KERNEL_CS || seg == __KERNEXEC_KERNEL_CS) + addr = ktla_ktva(addr); return addr; } @@ -53,6 +54,9 @@ static int is_setting_trap_flag(struct t unsigned char opcode[15]; unsigned long addr = convert_ip_to_linear(child, regs); + if (addr == -EINVAL) + return 0; + copied = access_process_vm(child, addr, opcode, sizeof(opcode), 0); for (i = 0; i < copied; i++) { switch (opcode[i]) { @@ -74,7 +78,7 @@ static int is_setting_trap_flag(struct t #ifdef CONFIG_X86_64 case 0x40 ... 0x4f: - if (regs->cs != __USER_CS) + if ((regs->cs & 0xffff) != __USER_CS) /* 32-bit mode: register increment */ return 0; /* 64-bit mode: REX prefix */ diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/kernel/sys_i386_32.c linux-2.6.36.4-pax/arch/x86/kernel/sys_i386_32.c --- linux-2.6.36.4/arch/x86/kernel/sys_i386_32.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/kernel/sys_i386_32.c 2010-12-18 16:50:32.000000000 +0100 @@ -24,17 +24,224 @@ #include -/* - * Do a system call from kernel instead of calling sys_execve so we - * end up with proper pt_regs. - */ -int kernel_execve(const char *filename, - const char *const argv[], - const char *const envp[]) +int i386_mmap_check(unsigned long addr, unsigned long len, unsigned long flags) { - long __res; - asm volatile ("push %%ebx ; movl %2,%%ebx ; int $0x80 ; pop %%ebx" - : "=a" (__res) - : "0" (__NR_execve), "ri" (filename), "c" (argv), "d" (envp) : "memory"); - return __res; + unsigned long pax_task_size = TASK_SIZE; + +#ifdef CONFIG_PAX_SEGMEXEC + if (current->mm->pax_flags & MF_PAX_SEGMEXEC) + pax_task_size = SEGMEXEC_TASK_SIZE; +#endif + + if (len > pax_task_size || addr > pax_task_size - len) + return -EINVAL; + + return 0; +} + +unsigned long +arch_get_unmapped_area(struct file *filp, unsigned long addr, + unsigned long len, unsigned long pgoff, unsigned long flags) +{ + struct mm_struct *mm = current->mm; + struct vm_area_struct *vma; + unsigned long start_addr, pax_task_size = TASK_SIZE; + +#ifdef CONFIG_PAX_SEGMEXEC + if (mm->pax_flags & MF_PAX_SEGMEXEC) + pax_task_size = SEGMEXEC_TASK_SIZE; +#endif + + pax_task_size -= PAGE_SIZE; + + if (len > pax_task_size) + return -ENOMEM; + + if (flags & MAP_FIXED) + return addr; + +#ifdef CONFIG_PAX_RANDMMAP + if (!(mm->pax_flags & MF_PAX_RANDMMAP)) +#endif + + if (addr) { + addr = PAGE_ALIGN(addr); + if (pax_task_size - len >= addr) { + vma = find_vma(mm, addr); + if (check_heap_stack_gap(vma, addr, len)) + return addr; + } + } + if (len > mm->cached_hole_size) { + start_addr = addr = mm->free_area_cache; + } else { + start_addr = addr = mm->mmap_base; + mm->cached_hole_size = 0; + } + +#ifdef CONFIG_PAX_PAGEEXEC + if (!(__supported_pte_mask & _PAGE_NX) && (mm->pax_flags & MF_PAX_PAGEEXEC) && (flags & MAP_EXECUTABLE) && start_addr >= mm->mmap_base) { + start_addr = 0x00110000UL; + +#ifdef CONFIG_PAX_RANDMMAP + if (mm->pax_flags & MF_PAX_RANDMMAP) + start_addr += mm->delta_mmap & 0x03FFF000UL; +#endif + + if (mm->start_brk <= start_addr && start_addr < mm->mmap_base) + start_addr = addr = mm->mmap_base; + else + addr = start_addr; + } +#endif + +full_search: + for (vma = find_vma(mm, addr); ; vma = vma->vm_next) { + /* At this point: (!vma || addr < vma->vm_end). */ + if (pax_task_size - len < addr) { + /* + * Start a new search - just in case we missed + * some holes. + */ + if (start_addr != mm->mmap_base) { + start_addr = addr = mm->mmap_base; + mm->cached_hole_size = 0; + goto full_search; + } + return -ENOMEM; + } + if (check_heap_stack_gap(vma, addr, len)) + break; + if (addr + mm->cached_hole_size < vma->vm_start) + mm->cached_hole_size = vma->vm_start - addr; + addr = vma->vm_end; + if (mm->start_brk <= addr && addr < mm->mmap_base) { + start_addr = addr = mm->mmap_base; + mm->cached_hole_size = 0; + goto full_search; + } + } + + /* + * Remember the place where we stopped the search: + */ + mm->free_area_cache = addr + len; + return addr; +} + +unsigned long +arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0, + const unsigned long len, const unsigned long pgoff, + const unsigned long flags) +{ + struct vm_area_struct *vma; + struct mm_struct *mm = current->mm; + unsigned long base = mm->mmap_base, addr = addr0, pax_task_size = TASK_SIZE; + +#ifdef CONFIG_PAX_SEGMEXEC + if (mm->pax_flags & MF_PAX_SEGMEXEC) + pax_task_size = SEGMEXEC_TASK_SIZE; +#endif + + pax_task_size -= PAGE_SIZE; + + /* requested length too big for entire address space */ + if (len > pax_task_size) + return -ENOMEM; + + if (flags & MAP_FIXED) + return addr; + +#ifdef CONFIG_PAX_PAGEEXEC + if (!(__supported_pte_mask & _PAGE_NX) && (mm->pax_flags & MF_PAX_PAGEEXEC) && (flags & MAP_EXECUTABLE)) + goto bottomup; +#endif + +#ifdef CONFIG_PAX_RANDMMAP + if (!(mm->pax_flags & MF_PAX_RANDMMAP)) +#endif + + /* requesting a specific address */ + if (addr) { + addr = PAGE_ALIGN(addr); + if (pax_task_size - len >= addr) { + vma = find_vma(mm, addr); + if (check_heap_stack_gap(vma, addr, len)) + return addr; + } + } + + /* check if free_area_cache is useful for us */ + if (len <= mm->cached_hole_size) { + mm->cached_hole_size = 0; + mm->free_area_cache = mm->mmap_base; + } + + /* either no address requested or can't fit in requested address hole */ + addr = mm->free_area_cache; + + /* make sure it can fit in the remaining address space */ + if (addr > len) { + vma = find_vma(mm, addr-len); + if (check_heap_stack_gap(vma, addr - len, len)) + /* remember the address as a hint for next time */ + return (mm->free_area_cache = addr-len); + } + + if (mm->mmap_base < len) + goto bottomup; + + addr = mm->mmap_base-len; + + do { + /* + * Lookup failure means no vma is above this address, + * else if new region fits below vma->vm_start, + * return with success: + */ + vma = find_vma(mm, addr); + if (check_heap_stack_gap(vma, addr, len)) + /* remember the address as a hint for next time */ + return (mm->free_area_cache = addr); + + /* remember the largest hole we saw so far */ + if (addr + mm->cached_hole_size < vma->vm_start) + mm->cached_hole_size = vma->vm_start - addr; + + /* try just below the current vma->vm_start */ + addr = vma->vm_start-len; + } while (len < vma->vm_start); + +bottomup: + /* + * A failed mmap() very likely causes application failure, + * so fall back to the bottom-up function here. This scenario + * can happen with large stack limits and large mmap() + * allocations. + */ + +#ifdef CONFIG_PAX_SEGMEXEC + if (mm->pax_flags & MF_PAX_SEGMEXEC) + mm->mmap_base = SEGMEXEC_TASK_UNMAPPED_BASE; + else +#endif + + mm->mmap_base = TASK_UNMAPPED_BASE; + +#ifdef CONFIG_PAX_RANDMMAP + if (mm->pax_flags & MF_PAX_RANDMMAP) + mm->mmap_base += mm->delta_mmap; +#endif + + mm->free_area_cache = mm->mmap_base; + mm->cached_hole_size = ~0UL; + addr = arch_get_unmapped_area(filp, addr0, len, pgoff, flags); + /* + * Restore the topdown base: + */ + mm->mmap_base = base; + mm->free_area_cache = base; + mm->cached_hole_size = ~0UL; + + return addr; } diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/kernel/sys_x86_64.c linux-2.6.36.4-pax/arch/x86/kernel/sys_x86_64.c --- linux-2.6.36.4/arch/x86/kernel/sys_x86_64.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/kernel/sys_x86_64.c 2010-10-27 22:58:07.000000000 +0200 @@ -32,8 +32,8 @@ out: return error; } -static void find_start_end(unsigned long flags, unsigned long *begin, - unsigned long *end) +static void find_start_end(struct mm_struct *mm, unsigned long flags, + unsigned long *begin, unsigned long *end) { if (!test_thread_flag(TIF_IA32) && (flags & MAP_32BIT)) { unsigned long new_begin; @@ -52,7 +52,7 @@ static void find_start_end(unsigned long *begin = new_begin; } } else { - *begin = TASK_UNMAPPED_BASE; + *begin = mm->mmap_base; *end = TASK_SIZE; } } @@ -69,16 +69,19 @@ arch_get_unmapped_area(struct file *filp if (flags & MAP_FIXED) return addr; - find_start_end(flags, &begin, &end); + find_start_end(mm, flags, &begin, &end); if (len > end) return -ENOMEM; +#ifdef CONFIG_PAX_RANDMMAP + if (!(mm->pax_flags & MF_PAX_RANDMMAP)) +#endif + if (addr) { addr = PAGE_ALIGN(addr); vma = find_vma(mm, addr); - if (end - len >= addr && - (!vma || addr + len <= vma->vm_start)) + if (end - len >= addr && check_heap_stack_gap(vma, addr, len)) return addr; } if (((flags & MAP_32BIT) || test_thread_flag(TIF_IA32)) @@ -106,7 +109,7 @@ full_search: } return -ENOMEM; } - if (!vma || addr + len <= vma->vm_start) { + if (check_heap_stack_gap(vma, addr, len)) { /* * Remember the place where we stopped the search: */ @@ -128,7 +131,7 @@ arch_get_unmapped_area_topdown(struct fi { struct vm_area_struct *vma; struct mm_struct *mm = current->mm; - unsigned long addr = addr0; + unsigned long base = mm->mmap_base, addr = addr0; /* requested length too big for entire address space */ if (len > TASK_SIZE) @@ -141,12 +144,15 @@ arch_get_unmapped_area_topdown(struct fi if (!test_thread_flag(TIF_IA32) && (flags & MAP_32BIT)) goto bottomup; +#ifdef CONFIG_PAX_RANDMMAP + if (!(mm->pax_flags & MF_PAX_RANDMMAP)) +#endif + /* requesting a specific address */ if (addr) { addr = PAGE_ALIGN(addr); vma = find_vma(mm, addr); - if (TASK_SIZE - len >= addr && - (!vma || addr + len <= vma->vm_start)) + if (TASK_SIZE - len >= addr && check_heap_stack_gap(vma, addr, len)) return addr; } @@ -162,7 +168,7 @@ arch_get_unmapped_area_topdown(struct fi /* make sure it can fit in the remaining address space */ if (addr > len) { vma = find_vma(mm, addr-len); - if (!vma || addr <= vma->vm_start) + if (check_heap_stack_gap(vma, addr - len, len)) /* remember the address as a hint for next time */ return mm->free_area_cache = addr-len; } @@ -179,7 +185,7 @@ arch_get_unmapped_area_topdown(struct fi * return with success: */ vma = find_vma(mm, addr); - if (!vma || addr+len <= vma->vm_start) + if (check_heap_stack_gap(vma, addr, len)) /* remember the address as a hint for next time */ return mm->free_area_cache = addr; @@ -198,13 +204,21 @@ bottomup: * can happen with large stack limits and large mmap() * allocations. */ + mm->mmap_base = TASK_UNMAPPED_BASE; + +#ifdef CONFIG_PAX_RANDMMAP + if (mm->pax_flags & MF_PAX_RANDMMAP) + mm->mmap_base += mm->delta_mmap; +#endif + + mm->free_area_cache = mm->mmap_base; mm->cached_hole_size = ~0UL; - mm->free_area_cache = TASK_UNMAPPED_BASE; addr = arch_get_unmapped_area(filp, addr0, len, pgoff, flags); /* * Restore the topdown base: */ - mm->free_area_cache = mm->mmap_base; + mm->mmap_base = base; + mm->free_area_cache = base; mm->cached_hole_size = ~0UL; return addr; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/kernel/syscall_table_32.S linux-2.6.36.4-pax/arch/x86/kernel/syscall_table_32.S --- linux-2.6.36.4/arch/x86/kernel/syscall_table_32.S 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/kernel/syscall_table_32.S 2010-10-27 22:58:07.000000000 +0200 @@ -1,3 +1,4 @@ +.section .rodata,"a",@progbits ENTRY(sys_call_table) .long sys_restart_syscall /* 0 - old "setup()" system call, used for restarting */ .long sys_exit diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/kernel/time.c linux-2.6.36.4-pax/arch/x86/kernel/time.c --- linux-2.6.36.4/arch/x86/kernel/time.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/kernel/time.c 2010-10-27 22:58:07.000000000 +0200 @@ -26,17 +26,13 @@ int timer_ack; #endif -#ifdef CONFIG_X86_64 -volatile unsigned long __jiffies __section_jiffies = INITIAL_JIFFIES; -#endif - unsigned long profile_pc(struct pt_regs *regs) { unsigned long pc = instruction_pointer(regs); - if (!user_mode_vm(regs) && in_lock_functions(pc)) { + if (!user_mode(regs) && in_lock_functions(pc)) { #ifdef CONFIG_FRAME_POINTER - return *(unsigned long *)(regs->bp + sizeof(long)); + return ktla_ktva(*(unsigned long *)(regs->bp + sizeof(long))); #else unsigned long *sp = (unsigned long *)kernel_stack_pointer(regs); @@ -45,11 +41,17 @@ unsigned long profile_pc(struct pt_regs * or above a saved flags. Eflags has bits 22-31 zero, * kernel addresses don't. */ + +#ifdef CONFIG_PAX_KERNEXEC + return ktla_ktva(sp[0]); +#else if (sp[0] >> 22) return sp[0]; if (sp[1] >> 22) return sp[1]; #endif + +#endif } return pc; } diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/kernel/tls.c linux-2.6.36.4-pax/arch/x86/kernel/tls.c --- linux-2.6.36.4/arch/x86/kernel/tls.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/kernel/tls.c 2011-02-24 17:37:51.000000000 +0100 @@ -85,6 +85,11 @@ int do_set_thread_area(struct task_struc if (idx < GDT_ENTRY_TLS_MIN || idx > GDT_ENTRY_TLS_MAX) return -EINVAL; +#ifdef CONFIG_PAX_SEGMEXEC + if ((p->mm->pax_flags & MF_PAX_SEGMEXEC) && (info.contents & MODIFY_LDT_CONTENTS_CODE)) + return -EINVAL; +#endif + set_tls_desc(p, idx, &info, 1); return 0; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/kernel/trampoline_32.S linux-2.6.36.4-pax/arch/x86/kernel/trampoline_32.S --- linux-2.6.36.4/arch/x86/kernel/trampoline_32.S 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/kernel/trampoline_32.S 2010-10-27 22:58:07.000000000 +0200 @@ -32,6 +32,12 @@ #include #include +#ifdef CONFIG_PAX_KERNEXEC +#define ta(X) (X) +#else +#define ta(X) ((X) - __PAGE_OFFSET) +#endif + /* We can free up trampoline after bootup if cpu hotplug is not supported. */ __CPUINITRODATA .code16 @@ -60,7 +66,7 @@ r_base = . inc %ax # protected mode (PE) bit lmsw %ax # into protected mode # flush prefetch and jump to startup_32_smp in arch/i386/kernel/head.S - ljmpl $__BOOT_CS, $(startup_32_smp-__PAGE_OFFSET) + ljmpl $__BOOT_CS, $ta(startup_32_smp) # These need to be in the same 64K segment as the above; # hence we don't use the boot_gdt_descr defined in head.S diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/kernel/trampoline_64.S linux-2.6.36.4-pax/arch/x86/kernel/trampoline_64.S --- linux-2.6.36.4/arch/x86/kernel/trampoline_64.S 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/kernel/trampoline_64.S 2010-10-27 22:58:07.000000000 +0200 @@ -91,7 +91,7 @@ startup_32: movl $__KERNEL_DS, %eax # Initialize the %ds segment register movl %eax, %ds - movl $X86_CR4_PAE, %eax + movl $(X86_CR4_PSE | X86_CR4_PAE | X86_CR4_PGE), %eax movl %eax, %cr4 # Enable PAE mode # Setup trampoline 4 level pagetables @@ -138,7 +138,7 @@ tidt: # so the kernel can live anywhere .balign 4 tgdt: - .short tgdt_end - tgdt # gdt limit + .short tgdt_end - tgdt - 1 # gdt limit .long tgdt - r_base .short 0 .quad 0x00cf9b000000ffff # __KERNEL32_CS diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/kernel/traps.c linux-2.6.36.4-pax/arch/x86/kernel/traps.c --- linux-2.6.36.4/arch/x86/kernel/traps.c 2010-12-14 21:09:00.000000000 +0100 +++ linux-2.6.36.4-pax/arch/x86/kernel/traps.c 2010-12-31 03:21:43.000000000 +0100 @@ -70,12 +70,6 @@ asmlinkage int system_call(void); /* Do we ignore FPU interrupts ? */ char ignore_fpu_irq; - -/* - * The IDT has to be page-aligned to simplify the Pentium - * F0 0F bug workaround. - */ -gate_desc idt_table[NR_VECTORS] __page_aligned_data = { { { { 0, 0 } } }, }; #endif DECLARE_BITMAP(used_vectors, NR_VECTORS); @@ -110,13 +104,13 @@ static inline void preempt_conditional_c } static void __kprobes -do_trap(int trapnr, int signr, char *str, struct pt_regs *regs, +do_trap(int trapnr, int signr, const char *str, struct pt_regs *regs, long error_code, siginfo_t *info) { struct task_struct *tsk = current; #ifdef CONFIG_X86_32 - if (regs->flags & X86_VM_MASK) { + if (v8086_mode(regs)) { /* * traps 0, 1, 3, 4, and 5 should be forwarded to vm86. * On nmi (interrupt 2), do_trap should not be called. @@ -127,7 +121,7 @@ do_trap(int trapnr, int signr, char *str } #endif - if (!user_mode(regs)) + if (!user_mode_novm(regs)) goto kernel_trap; #ifdef CONFIG_X86_32 @@ -150,7 +144,7 @@ trap_signal: printk_ratelimit()) { printk(KERN_INFO "%s[%d] trap %s ip:%lx sp:%lx error:%lx", - tsk->comm, tsk->pid, str, + tsk->comm, task_pid_nr(tsk), str, regs->ip, regs->sp, error_code); print_vma_addr(" in ", regs->ip); printk("\n"); @@ -167,8 +161,20 @@ kernel_trap: if (!fixup_exception(regs)) { tsk->thread.error_code = error_code; tsk->thread.trap_no = trapnr; + +#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC) + if (trapnr == 12 && ((regs->cs & 0xFFFF) == __KERNEL_CS || (regs->cs & 0xFFFF) == __KERNEXEC_KERNEL_CS)) + str = "PAX: suspicious stack segment fault"; +#endif + die(str, regs, error_code); } + +#ifdef CONFIG_PAX_REFCOUNT + if (trapnr == 4) + pax_report_refcount_overflow(regs); +#endif + return; #ifdef CONFIG_X86_32 @@ -257,14 +263,30 @@ do_general_protection(struct pt_regs *re conditional_sti(regs); #ifdef CONFIG_X86_32 - if (regs->flags & X86_VM_MASK) + if (v8086_mode(regs)) goto gp_in_vm86; #endif tsk = current; - if (!user_mode(regs)) + if (!user_mode_novm(regs)) goto gp_in_kernel; +#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_PAGEEXEC) + if (!(__supported_pte_mask & _PAGE_NX) && tsk->mm && (tsk->mm->pax_flags & MF_PAX_PAGEEXEC)) { + struct mm_struct *mm = tsk->mm; + unsigned long limit; + + down_write(&mm->mmap_sem); + limit = mm->context.user_cs_limit; + if (limit < TASK_SIZE) { + track_exec_limit(mm, limit, TASK_SIZE, VM_EXEC); + up_write(&mm->mmap_sem); + return; + } + up_write(&mm->mmap_sem); + } +#endif + tsk->thread.error_code = error_code; tsk->thread.trap_no = 13; @@ -297,6 +319,13 @@ gp_in_kernel: if (notify_die(DIE_GPF, "general protection fault", regs, error_code, 13, SIGSEGV) == NOTIFY_STOP) return; + +#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC) + if ((regs->cs & 0xFFFF) == __KERNEL_CS || (regs->cs & 0xFFFF) == __KERNEXEC_KERNEL_CS) + die("PAX: suspicious general protection fault", regs, error_code); + else +#endif + die("general protection fault", regs, error_code); } @@ -572,7 +601,7 @@ dotraplinkage void __kprobes do_debug(st /* It's safe to allow irq's after DR6 has been saved */ preempt_conditional_sti(regs); - if (regs->flags & X86_VM_MASK) { + if (v8086_mode(regs)) { handle_vm86_trap((struct kernel_vm86_regs *) regs, error_code, 1); preempt_conditional_cli(regs); @@ -586,7 +615,7 @@ dotraplinkage void __kprobes do_debug(st * We already checked v86 mode above, so we can check for kernel mode * by just checking the CPL of CS. */ - if ((dr6 & DR_STEP) && !user_mode(regs)) { + if ((dr6 & DR_STEP) && !user_mode_novm(regs)) { tsk->thread.debugreg6 &= ~DR_STEP; set_tsk_thread_flag(tsk, TIF_SINGLESTEP); regs->flags &= ~X86_EFLAGS_TF; @@ -615,7 +644,7 @@ void math_error(struct pt_regs *regs, in return; conditional_sti(regs); - if (!user_mode_vm(regs)) + if (!user_mode(regs)) { if (!fixup_exception(regs)) { task->thread.error_code = error_code; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/kernel/tsc.c linux-2.6.36.4-pax/arch/x86/kernel/tsc.c --- linux-2.6.36.4/arch/x86/kernel/tsc.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/kernel/tsc.c 2010-10-27 22:58:07.000000000 +0200 @@ -832,7 +832,7 @@ static struct dmi_system_id __initdata b DMI_MATCH(DMI_BOARD_NAME, "2635FA0"), }, }, - {} + { NULL, NULL, {{0, {0}}}, NULL} }; static void __init check_system_tsc_reliable(void) diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/kernel/vm86_32.c linux-2.6.36.4-pax/arch/x86/kernel/vm86_32.c --- linux-2.6.36.4/arch/x86/kernel/vm86_32.c 2010-12-14 21:09:00.000000000 +0100 +++ linux-2.6.36.4-pax/arch/x86/kernel/vm86_32.c 2010-12-14 21:09:08.000000000 +0100 @@ -148,7 +148,7 @@ struct pt_regs *save_v86_state(struct ke do_exit(SIGSEGV); } - tss = &per_cpu(init_tss, get_cpu()); + tss = init_tss + get_cpu(); current->thread.sp0 = current->thread.saved_sp0; current->thread.sysenter_cs = __KERNEL_CS; load_sp0(tss, ¤t->thread); @@ -323,7 +323,7 @@ static void do_sys_vm86(struct kernel_vm tsk->thread.saved_fs = info->regs32->fs; tsk->thread.saved_gs = get_user_gs(info->regs32); - tss = &per_cpu(init_tss, get_cpu()); + tss = init_tss + get_cpu(); tsk->thread.sp0 = (unsigned long) &info->VM86_TSS_ESP0; if (cpu_has_sep) tsk->thread.sysenter_cs = 0; @@ -528,7 +528,7 @@ static void do_int(struct kernel_vm86_re goto cannot_handle; if (i == 0x21 && is_revectored(AH(regs), &KVM86->int21_revectored)) goto cannot_handle; - intr_ptr = (unsigned long __user *) (i << 2); + intr_ptr = (__force unsigned long __user *) (i << 2); if (get_user(segoffs, intr_ptr)) goto cannot_handle; if ((segoffs >> 16) == BIOSSEG) diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/kernel/vmi_32.c linux-2.6.36.4-pax/arch/x86/kernel/vmi_32.c --- linux-2.6.36.4/arch/x86/kernel/vmi_32.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/kernel/vmi_32.c 2010-12-15 11:08:30.000000000 +0100 @@ -46,12 +46,17 @@ typedef u32 __attribute__((regparm(1))) typedef u64 __attribute__((regparm(2))) (VROMLONGFUNC)(int); #define call_vrom_func(rom,func) \ - (((VROMFUNC *)(rom->func))()) + (((VROMFUNC *)(ktva_ktla(rom.func)))()) #define call_vrom_long_func(rom,func,arg) \ - (((VROMLONGFUNC *)(rom->func)) (arg)) +({\ + u64 __reloc = ((VROMLONGFUNC *)(ktva_ktla(rom.func))) (arg);\ + struct vmi_relocation_info *const __rel = (struct vmi_relocation_info *)&__reloc;\ + __rel->eip = (unsigned char *)ktva_ktla((unsigned long)__rel->eip);\ + __reloc;\ +}) -static struct vrom_header *vmi_rom; +static struct vrom_header vmi_rom __attribute((__section__(".vmi.rom"), __aligned__(PAGE_SIZE))); static int disable_pge; static int disable_pse; static int disable_sep; @@ -78,10 +83,10 @@ static struct { void (*set_initial_ap_state)(int, int); void (*halt)(void); void (*set_lazy_mode)(int mode); -} vmi_ops; +} vmi_ops __read_only; /* Cached VMI operations */ -struct vmi_timer_ops vmi_timer_ops; +struct vmi_timer_ops vmi_timer_ops __read_only; /* * VMI patching routines. @@ -96,7 +101,7 @@ struct vmi_timer_ops vmi_timer_ops; static inline void patch_offset(void *insnbuf, unsigned long ip, unsigned long dest) { - *(unsigned long *)(insnbuf+1) = dest-ip-5; + *(unsigned long *)(insnbuf+1) = dest-ip-5; } static unsigned patch_internal(int call, unsigned len, void *insnbuf, @@ -104,6 +109,7 @@ static unsigned patch_internal(int call, { u64 reloc; struct vmi_relocation_info *const rel = (struct vmi_relocation_info *)&reloc; + reloc = call_vrom_long_func(vmi_rom, get_reloc, call); switch(rel->type) { case VMI_RELOCATION_CALL_REL: @@ -382,13 +388,13 @@ static void vmi_set_pud(pud_t *pudp, pud static void vmi_pte_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep) { - const pte_t pte = { .pte = 0 }; + const pte_t pte = __pte(0ULL); vmi_ops.set_pte(pte, ptep, vmi_flags_addr(mm, addr, VMI_PAGE_PT, 0)); } static void vmi_pmd_clear(pmd_t *pmd) { - const pte_t pte = { .pte = 0 }; + const pte_t pte = __pte(0ULL); vmi_ops.set_pte(pte, (pte_t *)pmd, VMI_PAGE_PD); } #endif @@ -416,10 +422,10 @@ vmi_startup_ipi_hook(int phys_apicid, un ap.ss = __KERNEL_DS; ap.esp = (unsigned long) start_esp; - ap.ds = __USER_DS; - ap.es = __USER_DS; + ap.ds = __KERNEL_DS; + ap.es = __KERNEL_DS; ap.fs = __KERNEL_PERCPU; - ap.gs = __KERNEL_STACK_CANARY; + savesegment(gs, ap.gs); ap.eflags = 0; @@ -464,6 +470,18 @@ static void vmi_leave_lazy_mmu(void) paravirt_leave_lazy_mmu(); } +#ifdef CONFIG_PAX_KERNEXEC +static unsigned long vmi_pax_open_kernel(void) +{ + return 0; +} + +static unsigned long vmi_pax_close_kernel(void) +{ + return 0; +} +#endif + static inline int __init check_vmi_rom(struct vrom_header *rom) { struct pci_header *pci; @@ -476,6 +494,10 @@ static inline int __init check_vmi_rom(s return 0; if (rom->vrom_signature != VMI_SIGNATURE) return 0; + if (rom->rom_length * 512 > sizeof(*rom)) { + printk(KERN_WARNING "PAX: VMI: ROM size too big: %x\n", rom->rom_length * 512); + return 0; + } if (rom->api_version_maj != VMI_API_REV_MAJOR || rom->api_version_min+1 < VMI_API_REV_MINOR+1) { printk(KERN_WARNING "VMI: Found mismatched rom version %d.%d\n", @@ -540,7 +562,7 @@ static inline int __init probe_vmi_rom(v struct vrom_header *romstart; romstart = (struct vrom_header *)isa_bus_to_virt(base); if (check_vmi_rom(romstart)) { - vmi_rom = romstart; + vmi_rom = *romstart; return 1; } } @@ -816,6 +838,11 @@ static inline int __init activate_vmi(vo para_fill(pv_irq_ops.safe_halt, Halt); +#ifdef CONFIG_PAX_KERNEXEC + pv_mmu_ops.pax_open_kernel = vmi_pax_open_kernel; + pv_mmu_ops.pax_close_kernel = vmi_pax_close_kernel; +#endif + /* * Alternative instruction rewriting doesn't happen soon enough * to convert VMI_IRET to a call instead of a jump; so we have @@ -833,16 +860,16 @@ static inline int __init activate_vmi(vo void __init vmi_init(void) { - if (!vmi_rom) + if (!vmi_rom.rom_signature) probe_vmi_rom(); else - check_vmi_rom(vmi_rom); + check_vmi_rom(&vmi_rom); /* In case probing for or validating the ROM failed, basil */ - if (!vmi_rom) + if (!vmi_rom.rom_signature) return; - reserve_top_address(-vmi_rom->virtual_top); + reserve_top_address(-vmi_rom.virtual_top); #ifdef CONFIG_X86_IO_APIC /* This is virtual hardware; timer routing is wired correctly */ @@ -854,7 +881,7 @@ void __init vmi_activate(void) { unsigned long flags; - if (!vmi_rom) + if (!vmi_rom.rom_signature) return; local_irq_save(flags); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/kernel/vmlinux.lds.S linux-2.6.36.4-pax/arch/x86/kernel/vmlinux.lds.S --- linux-2.6.36.4/arch/x86/kernel/vmlinux.lds.S 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/kernel/vmlinux.lds.S 2010-12-16 10:36:20.000000000 +0100 @@ -26,6 +26,13 @@ #include #include #include +#include + +#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC) +#define __KERNEL_TEXT_OFFSET (LOAD_OFFSET + ____LOAD_PHYSICAL_ADDR) +#else +#define __KERNEL_TEXT_OFFSET 0 +#endif #undef i386 /* in case the preprocessor is a 32bit one */ @@ -34,11 +41,9 @@ OUTPUT_FORMAT(CONFIG_OUTPUT_FORMAT, CONF #ifdef CONFIG_X86_32 OUTPUT_ARCH(i386) ENTRY(phys_startup_32) -jiffies = jiffies_64; #else OUTPUT_ARCH(i386:x86-64) ENTRY(phys_startup_64) -jiffies_64 = jiffies; #endif #if defined(CONFIG_X86_64) && defined(CONFIG_DEBUG_RODATA) @@ -69,31 +74,46 @@ jiffies_64 = jiffies; PHDRS { text PT_LOAD FLAGS(5); /* R_E */ - data PT_LOAD FLAGS(7); /* RWE */ +#ifdef CONFIG_X86_32 + module PT_LOAD FLAGS(5); /* R_E */ +#endif +#ifdef CONFIG_XEN + rodata PT_LOAD FLAGS(5); /* R_E */ +#else + rodata PT_LOAD FLAGS(4); /* R__ */ +#endif + data PT_LOAD FLAGS(6); /* RW_ */ #ifdef CONFIG_X86_64 user PT_LOAD FLAGS(5); /* R_E */ +#endif + init.begin PT_LOAD FLAGS(6); /* RW_ */ #ifdef CONFIG_SMP percpu PT_LOAD FLAGS(6); /* RW_ */ #endif + text.init PT_LOAD FLAGS(5); /* R_E */ + text.exit PT_LOAD FLAGS(5); /* R_E */ init PT_LOAD FLAGS(7); /* RWE */ -#endif note PT_NOTE FLAGS(0); /* ___ */ } SECTIONS { #ifdef CONFIG_X86_32 - . = LOAD_OFFSET + LOAD_PHYSICAL_ADDR; - phys_startup_32 = startup_32 - LOAD_OFFSET; + . = LOAD_OFFSET + ____LOAD_PHYSICAL_ADDR; #else - . = __START_KERNEL; - phys_startup_64 = startup_64 - LOAD_OFFSET; + . = __START_KERNEL; #endif /* Text and read-only data */ - .text : AT(ADDR(.text) - LOAD_OFFSET) { - _text = .; + .text (. - __KERNEL_TEXT_OFFSET): AT(ADDR(.text) - LOAD_OFFSET + __KERNEL_TEXT_OFFSET) { /* bootstrapping code */ +#ifdef CONFIG_X86_32 + phys_startup_32 = startup_32 - LOAD_OFFSET + __KERNEL_TEXT_OFFSET; +#else + phys_startup_64 = startup_64 - LOAD_OFFSET + __KERNEL_TEXT_OFFSET; +#endif + __LOAD_PHYSICAL_ADDR = . - LOAD_OFFSET + __KERNEL_TEXT_OFFSET; + _text = .; HEAD_TEXT #ifdef CONFIG_X86_32 . = ALIGN(PAGE_SIZE); @@ -108,13 +128,52 @@ SECTIONS IRQENTRY_TEXT *(.fixup) *(.gnu.warning) - /* End of text section */ - _etext = .; } :text = 0x9090 - NOTES :text :note + . += __KERNEL_TEXT_OFFSET; - EXCEPTION_TABLE(16) :text = 0x9090 +#ifdef CONFIG_X86_32 + . = ALIGN(PAGE_SIZE); + .vmi.rom : AT(ADDR(.vmi.rom) - LOAD_OFFSET) { + *(.vmi.rom) + } :module + + . = ALIGN(PAGE_SIZE); + .module.text : AT(ADDR(.module.text) - LOAD_OFFSET) { + +#if defined(CONFIG_PAX_KERNEXEC) && defined(CONFIG_MODULES) + MODULES_EXEC_VADDR = .; + BYTE(0) + . += (CONFIG_PAX_KERNEXEC_MODULE_TEXT * 1024 * 1024); + . = ALIGN(HPAGE_SIZE); + MODULES_EXEC_END = . - 1; +#endif + + } :module +#endif + + .text.end : AT(ADDR(.text.end) - LOAD_OFFSET) { + /* End of text section */ + _etext = . - __KERNEL_TEXT_OFFSET; + } + +#ifdef CONFIG_X86_32 + . = ALIGN(PAGE_SIZE); + .rodata.page_aligned : AT(ADDR(.rodata.page_aligned) - LOAD_OFFSET) { + *(.idt) + . = ALIGN(PAGE_SIZE); + *(.empty_zero_page) + *(.swapper_pg_fixmap) + *(.swapper_pg_pmd) + *(.swapper_pg_dir) + *(.trampoline_pg_dir) + } :rodata +#endif + + . = ALIGN(PAGE_SIZE); + NOTES :rodata :note + + EXCEPTION_TABLE(16) :rodata X64_ALIGN_DEBUG_RODATA_BEGIN RO_DATA(PAGE_SIZE) @@ -122,16 +181,20 @@ SECTIONS /* Data */ .data : AT(ADDR(.data) - LOAD_OFFSET) { + +#ifdef CONFIG_PAX_KERNEXEC + . = ALIGN(HPAGE_SIZE); +#else + . = ALIGN(PAGE_SIZE); +#endif + /* Start of data section */ _sdata = .; /* init_task */ INIT_TASK_DATA(THREAD_SIZE) -#ifdef CONFIG_X86_32 - /* 32 bit has nosave before _edata */ NOSAVE_DATA -#endif PAGE_ALIGNED_DATA(PAGE_SIZE) @@ -140,6 +203,8 @@ SECTIONS DATA_DATA CONSTRUCTORS + jiffies = jiffies_64; + /* rarely changed data like cpu maps */ READ_MOSTLY_DATA(INTERNODE_CACHE_BYTES) @@ -194,12 +259,6 @@ SECTIONS } vgetcpu_mode = VVIRT(.vgetcpu_mode); - . = ALIGN(L1_CACHE_BYTES); - .jiffies : AT(VLOAD(.jiffies)) { - *(.jiffies) - } - jiffies = VVIRT(.jiffies); - .vsyscall_3 ADDR(.vsyscall_0) + 3072: AT(VLOAD(.vsyscall_3)) { *(.vsyscall_3) } @@ -215,12 +274,19 @@ SECTIONS #endif /* CONFIG_X86_64 */ /* Init code and data - will be freed after init */ - . = ALIGN(PAGE_SIZE); .init.begin : AT(ADDR(.init.begin) - LOAD_OFFSET) { + BYTE(0) + +#ifdef CONFIG_PAX_KERNEXEC + . = ALIGN(HPAGE_SIZE); +#else + . = ALIGN(PAGE_SIZE); +#endif + __init_begin = .; /* paired with __init_end */ - } + } :init.begin -#if defined(CONFIG_X86_64) && defined(CONFIG_SMP) +#ifdef CONFIG_SMP /* * percpu offsets are zero-based on SMP. PERCPU_VADDR() changes the * output PHDR, so the next output section - .init.text - should @@ -229,12 +295,27 @@ SECTIONS PERCPU_VADDR(0, :percpu) #endif - INIT_TEXT_SECTION(PAGE_SIZE) -#ifdef CONFIG_X86_64 - :init -#endif + . = ALIGN(PAGE_SIZE); + init_begin = .; + .init.text (. - __KERNEL_TEXT_OFFSET): AT(init_begin - LOAD_OFFSET) { + VMLINUX_SYMBOL(_sinittext) = .; + INIT_TEXT + VMLINUX_SYMBOL(_einittext) = .; + . = ALIGN(PAGE_SIZE); + } :text.init - INIT_DATA_SECTION(16) + /* + * .exit.text is discard at runtime, not link time, to deal with + * references from .altinstructions and .eh_frame + */ + .exit.text : AT(ADDR(.exit.text) - LOAD_OFFSET + __KERNEL_TEXT_OFFSET) { + EXIT_TEXT + . = ALIGN(16); + } :text.exit + . = init_begin + SIZEOF(.init.text) + SIZEOF(.exit.text); + + . = ALIGN(PAGE_SIZE); + INIT_DATA_SECTION(16) :init .x86_cpu_dev.init : AT(ADDR(.x86_cpu_dev.init) - LOAD_OFFSET) { __x86_cpu_dev_start = .; @@ -260,19 +341,11 @@ SECTIONS *(.altinstr_replacement) } - /* - * .exit.text is discard at runtime, not link time, to deal with - * references from .altinstructions and .eh_frame - */ - .exit.text : AT(ADDR(.exit.text) - LOAD_OFFSET) { - EXIT_TEXT - } - .exit.data : AT(ADDR(.exit.data) - LOAD_OFFSET) { EXIT_DATA } -#if !defined(CONFIG_X86_64) || !defined(CONFIG_SMP) +#ifndef CONFIG_SMP PERCPU(PAGE_SIZE) #endif @@ -291,16 +364,10 @@ SECTIONS .smp_locks : AT(ADDR(.smp_locks) - LOAD_OFFSET) { __smp_locks = .; *(.smp_locks) - . = ALIGN(PAGE_SIZE); __smp_locks_end = .; + . = ALIGN(PAGE_SIZE); } -#ifdef CONFIG_X86_64 - .data_nosave : AT(ADDR(.data_nosave) - LOAD_OFFSET) { - NOSAVE_DATA - } -#endif - /* BSS */ . = ALIGN(PAGE_SIZE); .bss : AT(ADDR(.bss) - LOAD_OFFSET) { @@ -316,6 +383,7 @@ SECTIONS __brk_base = .; . += 64 * 1024; /* 64k alignment slop space */ *(.brk_reservation) /* areas brk users have reserved */ + . = ALIGN(HPAGE_SIZE); __brk_limit = .; } @@ -342,13 +410,12 @@ SECTIONS * for the boot processor. */ #define INIT_PER_CPU(x) init_per_cpu__##x = x + __per_cpu_load -INIT_PER_CPU(gdt_page); INIT_PER_CPU(irq_stack_union); /* * Build-time check on the image size: */ -. = ASSERT((_end - _text <= KERNEL_IMAGE_SIZE), +. = ASSERT((_end - _text - __KERNEL_TEXT_OFFSET <= KERNEL_IMAGE_SIZE), "kernel image bigger than KERNEL_IMAGE_SIZE"); #ifdef CONFIG_SMP diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/kernel/vsyscall_64.c linux-2.6.36.4-pax/arch/x86/kernel/vsyscall_64.c --- linux-2.6.36.4/arch/x86/kernel/vsyscall_64.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/kernel/vsyscall_64.c 2010-10-27 22:58:07.000000000 +0200 @@ -80,6 +80,7 @@ void update_vsyscall(struct timespec *wa write_seqlock_irqsave(&vsyscall_gtod_data.lock, flags); /* copy vsyscall data */ + strlcpy(vsyscall_gtod_data.clock.name, clock->name, sizeof vsyscall_gtod_data.clock.name); vsyscall_gtod_data.clock.vread = clock->vread; vsyscall_gtod_data.clock.cycle_last = clock->cycle_last; vsyscall_gtod_data.clock.mask = clock->mask; @@ -208,7 +209,7 @@ vgetcpu(unsigned *cpu, unsigned *node, s We do this here because otherwise user space would do it on its own in a likely inferior way (no access to jiffies). If you don't like it pass NULL. */ - if (tcache && tcache->blob[0] == (j = __jiffies)) { + if (tcache && tcache->blob[0] == (j = jiffies)) { p = tcache->blob[1]; } else if (__vgetcpu_mode == VGETCPU_RDTSCP) { /* Load per CPU data from RDTSCP */ diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/kernel/x8664_ksyms_64.c linux-2.6.36.4-pax/arch/x86/kernel/x8664_ksyms_64.c --- linux-2.6.36.4/arch/x86/kernel/x8664_ksyms_64.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/kernel/x8664_ksyms_64.c 2010-10-27 22:58:07.000000000 +0200 @@ -29,8 +29,6 @@ EXPORT_SYMBOL(__put_user_8); EXPORT_SYMBOL(copy_user_generic_string); EXPORT_SYMBOL(copy_user_generic_unrolled); EXPORT_SYMBOL(__copy_user_nocache); -EXPORT_SYMBOL(_copy_from_user); -EXPORT_SYMBOL(_copy_to_user); EXPORT_SYMBOL(copy_page); EXPORT_SYMBOL(clear_page); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/kernel/xsave.c linux-2.6.36.4-pax/arch/x86/kernel/xsave.c --- linux-2.6.36.4/arch/x86/kernel/xsave.c 2011-01-12 15:14:10.000000000 +0100 +++ linux-2.6.36.4-pax/arch/x86/kernel/xsave.c 2011-01-12 15:14:27.000000000 +0100 @@ -130,7 +130,7 @@ int check_for_xstate(struct i387_fxsave_ fx_sw_user->xstate_size > fx_sw_user->extended_size) return -EINVAL; - err = __get_user(magic2, (__u32 *) (((void *)fpstate) + + err = __get_user(magic2, (__u32 __user *) (((void __user *)fpstate) + fx_sw_user->extended_size - FP_XSTATE_MAGIC2_SIZE)); if (err) @@ -267,7 +267,7 @@ fx_only: * the other extended state. */ xrstor_state(init_xstate_buf, pcntxt_mask & ~XSTATE_FPSSE); - return fxrstor_checking((__force struct i387_fxsave_struct *)buf); + return fxrstor_checking((struct i387_fxsave_struct __user *)buf); } /* @@ -299,7 +299,7 @@ int restore_i387_xstate(void __user *buf if (use_xsave()) err = restore_user_xstate(buf); else - err = fxrstor_checking((__force struct i387_fxsave_struct *) + err = fxrstor_checking((struct i387_fxsave_struct __user *) buf); if (unlikely(err)) { /* diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/kvm/emulate.c linux-2.6.36.4-pax/arch/x86/kvm/emulate.c --- linux-2.6.36.4/arch/x86/kvm/emulate.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/kvm/emulate.c 2010-10-27 22:58:07.000000000 +0200 @@ -92,7 +92,7 @@ #define Src2CL (1<<29) #define Src2ImmByte (2<<29) #define Src2One (3<<29) -#define Src2Mask (7<<29) +#define Src2Mask (7U<<29) enum { Group1_80, Group1_81, Group1_82, Group1_83, @@ -446,6 +446,7 @@ static u32 group2_table[] = { #define ____emulate_2op(_op, _src, _dst, _eflags, _x, _y, _suffix) \ do { \ + unsigned long _tmp; \ __asm__ __volatile__ ( \ _PRE_EFLAGS("0", "4", "2") \ _op _suffix " %"_x"3,%1; " \ @@ -459,8 +460,6 @@ static u32 group2_table[] = { /* Raw emulation: instruction has two explicit operands. */ #define __emulate_2op_nobyte(_op,_src,_dst,_eflags,_wx,_wy,_lx,_ly,_qx,_qy) \ do { \ - unsigned long _tmp; \ - \ switch ((_dst).bytes) { \ case 2: \ ____emulate_2op(_op,_src,_dst,_eflags,_wx,_wy,"w"); \ @@ -476,7 +475,6 @@ static u32 group2_table[] = { #define __emulate_2op(_op,_src,_dst,_eflags,_bx,_by,_wx,_wy,_lx,_ly,_qx,_qy) \ do { \ - unsigned long _tmp; \ switch ((_dst).bytes) { \ case 1: \ ____emulate_2op(_op,_src,_dst,_eflags,_bx,_by,"b"); \ diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/kvm/lapic.c linux-2.6.36.4-pax/arch/x86/kvm/lapic.c --- linux-2.6.36.4/arch/x86/kvm/lapic.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/kvm/lapic.c 2010-10-27 22:58:07.000000000 +0200 @@ -53,7 +53,7 @@ #define APIC_BUS_CYCLE_NS 1 /* #define apic_debug(fmt,arg...) printk(KERN_WARNING fmt,##arg) */ -#define apic_debug(fmt, arg...) +#define apic_debug(fmt, arg...) do {} while (0) #define APIC_LVT_NUM 6 /* 14 is the version for Xeon and Pentium 8.4.8*/ diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/kvm/svm.c linux-2.6.36.4-pax/arch/x86/kvm/svm.c --- linux-2.6.36.4/arch/x86/kvm/svm.c 2011-01-12 15:14:09.000000000 +0100 +++ linux-2.6.36.4-pax/arch/x86/kvm/svm.c 2011-02-24 17:37:51.000000000 +0100 @@ -2921,7 +2921,11 @@ static void reload_tss(struct kvm_vcpu * int cpu = raw_smp_processor_id(); struct svm_cpu_data *sd = per_cpu(svm_data, cpu); + + pax_open_kernel(); sd->tss_desc->type = 9; /* available 32/64-bit TSS */ + pax_close_kernel(); + load_TR_desc(); } @@ -3480,7 +3484,7 @@ static void svm_fpu_deactivate(struct kv update_cr0_intercept(svm); } -static struct kvm_x86_ops svm_x86_ops = { +static const struct kvm_x86_ops svm_x86_ops = { .cpu_has_kvm_support = has_svm, .disabled_by_bios = is_disabled, .hardware_setup = svm_hardware_setup, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/kvm/vmx.c linux-2.6.36.4-pax/arch/x86/kvm/vmx.c --- linux-2.6.36.4/arch/x86/kvm/vmx.c 2011-01-12 15:14:09.000000000 +0100 +++ linux-2.6.36.4-pax/arch/x86/kvm/vmx.c 2011-02-24 17:37:51.000000000 +0100 @@ -711,7 +711,11 @@ static void reload_tss(void) native_store_gdt(&gdt); descs = (void *)gdt.address; + + pax_open_kernel(); descs[GDT_ENTRY_TSS].type = 9; /* available TSS */ + pax_close_kernel(); + load_TR_desc(); } @@ -1615,8 +1619,11 @@ static __init int hardware_setup(void) if (!cpu_has_vmx_flexpriority()) flexpriority_enabled = 0; - if (!cpu_has_vmx_tpr_shadow()) - kvm_x86_ops->update_cr8_intercept = NULL; + if (!cpu_has_vmx_tpr_shadow()) { + pax_open_kernel(); + *(void **)&kvm_x86_ops->update_cr8_intercept = NULL; + pax_close_kernel(); + } if (enable_ept && !cpu_has_vmx_ept_2m_page()) kvm_disable_largepages(); @@ -2601,7 +2608,7 @@ static int vmx_vcpu_setup(struct vcpu_vm vmcs_writel(HOST_IDTR_BASE, dt.address); /* 22.2.4 */ asm("mov $.Lkvm_vmx_return, %0" : "=r"(kvm_vmx_return)); - vmcs_writel(HOST_RIP, kvm_vmx_return); /* 22.2.5 */ + vmcs_writel(HOST_RIP, ktla_ktva(kvm_vmx_return)); /* 22.2.5 */ vmcs_write32(VM_EXIT_MSR_STORE_COUNT, 0); vmcs_write32(VM_EXIT_MSR_LOAD_COUNT, 0); vmcs_write64(VM_EXIT_MSR_LOAD_ADDR, __pa(vmx->msr_autoload.host)); @@ -3984,6 +3991,12 @@ static void vmx_vcpu_run(struct kvm_vcpu "jmp .Lkvm_vmx_return \n\t" ".Llaunched: " __ex(ASM_VMX_VMRESUME) "\n\t" ".Lkvm_vmx_return: " + +#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC) + "ljmp %[cs],$.Lkvm_vmx_return2\n\t" + ".Lkvm_vmx_return2: " +#endif + /* Save guest registers, load host registers, keep flags */ "xchg %0, (%%"R"sp) \n\t" "mov %%"R"ax, %c[rax](%0) \n\t" @@ -4030,8 +4043,13 @@ static void vmx_vcpu_run(struct kvm_vcpu [r15]"i"(offsetof(struct vcpu_vmx, vcpu.arch.regs[VCPU_REGS_R15])), #endif [cr2]"i"(offsetof(struct vcpu_vmx, vcpu.arch.cr2)) + +#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC) + ,[cs]"i"(__KERNEL_CS) +#endif + : "cc", "memory" - , R"bx", R"di", R"si" + , R"ax", R"bx", R"di", R"si" #ifdef CONFIG_X86_64 , "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15" #endif @@ -4045,7 +4063,7 @@ static void vmx_vcpu_run(struct kvm_vcpu if (vmx->rmode.irq.pending) fixup_rmode_irq(vmx); - asm("mov %0, %%ds; mov %0, %%es" : : "r"(__USER_DS)); + asm("mov %0, %%ds; mov %0, %%es; mov %0, %%ss" : : "r"(__KERNEL_DS)); vmx->launched = 1; vmx_complete_interrupts(vmx); @@ -4274,7 +4292,7 @@ static void vmx_set_supported_cpuid(u32 { } -static struct kvm_x86_ops vmx_x86_ops = { +static const struct kvm_x86_ops vmx_x86_ops = { .cpu_has_kvm_support = cpu_has_kvm_support, .disabled_by_bios = vmx_disabled_by_bios, .hardware_setup = hardware_setup, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/kvm/x86.c linux-2.6.36.4-pax/arch/x86/kvm/x86.c --- linux-2.6.36.4/arch/x86/kvm/x86.c 2011-01-12 15:14:09.000000000 +0100 +++ linux-2.6.36.4-pax/arch/x86/kvm/x86.c 2011-01-12 15:14:27.000000000 +0100 @@ -90,7 +90,7 @@ static void update_cr8_intercept(struct static int kvm_dev_ioctl_get_supported_cpuid(struct kvm_cpuid2 *cpuid, struct kvm_cpuid_entry2 __user *entries); -struct kvm_x86_ops *kvm_x86_ops; +const struct kvm_x86_ops *kvm_x86_ops; EXPORT_SYMBOL_GPL(kvm_x86_ops); int ignore_msrs = 0; @@ -116,38 +116,38 @@ static struct kvm_shared_msrs_global __r static DEFINE_PER_CPU(struct kvm_shared_msrs, shared_msrs); struct kvm_stats_debugfs_item debugfs_entries[] = { - { "pf_fixed", VCPU_STAT(pf_fixed) }, - { "pf_guest", VCPU_STAT(pf_guest) }, - { "tlb_flush", VCPU_STAT(tlb_flush) }, - { "invlpg", VCPU_STAT(invlpg) }, - { "exits", VCPU_STAT(exits) }, - { "io_exits", VCPU_STAT(io_exits) }, - { "mmio_exits", VCPU_STAT(mmio_exits) }, - { "signal_exits", VCPU_STAT(signal_exits) }, - { "irq_window", VCPU_STAT(irq_window_exits) }, - { "nmi_window", VCPU_STAT(nmi_window_exits) }, - { "halt_exits", VCPU_STAT(halt_exits) }, - { "halt_wakeup", VCPU_STAT(halt_wakeup) }, - { "hypercalls", VCPU_STAT(hypercalls) }, - { "request_irq", VCPU_STAT(request_irq_exits) }, - { "irq_exits", VCPU_STAT(irq_exits) }, - { "host_state_reload", VCPU_STAT(host_state_reload) }, - { "efer_reload", VCPU_STAT(efer_reload) }, - { "fpu_reload", VCPU_STAT(fpu_reload) }, - { "insn_emulation", VCPU_STAT(insn_emulation) }, - { "insn_emulation_fail", VCPU_STAT(insn_emulation_fail) }, - { "irq_injections", VCPU_STAT(irq_injections) }, - { "nmi_injections", VCPU_STAT(nmi_injections) }, - { "mmu_shadow_zapped", VM_STAT(mmu_shadow_zapped) }, - { "mmu_pte_write", VM_STAT(mmu_pte_write) }, - { "mmu_pte_updated", VM_STAT(mmu_pte_updated) }, - { "mmu_pde_zapped", VM_STAT(mmu_pde_zapped) }, - { "mmu_flooded", VM_STAT(mmu_flooded) }, - { "mmu_recycled", VM_STAT(mmu_recycled) }, - { "mmu_cache_miss", VM_STAT(mmu_cache_miss) }, - { "mmu_unsync", VM_STAT(mmu_unsync) }, - { "remote_tlb_flush", VM_STAT(remote_tlb_flush) }, - { "largepages", VM_STAT(lpages) }, + { "pf_fixed", VCPU_STAT(pf_fixed), NULL }, + { "pf_guest", VCPU_STAT(pf_guest), NULL }, + { "tlb_flush", VCPU_STAT(tlb_flush), NULL }, + { "invlpg", VCPU_STAT(invlpg), NULL }, + { "exits", VCPU_STAT(exits), NULL }, + { "io_exits", VCPU_STAT(io_exits), NULL }, + { "mmio_exits", VCPU_STAT(mmio_exits), NULL }, + { "signal_exits", VCPU_STAT(signal_exits), NULL }, + { "irq_window", VCPU_STAT(irq_window_exits), NULL }, + { "nmi_window", VCPU_STAT(nmi_window_exits), NULL }, + { "halt_exits", VCPU_STAT(halt_exits), NULL }, + { "halt_wakeup", VCPU_STAT(halt_wakeup), NULL }, + { "hypercalls", VCPU_STAT(hypercalls), NULL }, + { "request_irq", VCPU_STAT(request_irq_exits), NULL }, + { "irq_exits", VCPU_STAT(irq_exits), NULL }, + { "host_state_reload", VCPU_STAT(host_state_reload), NULL }, + { "efer_reload", VCPU_STAT(efer_reload), NULL }, + { "fpu_reload", VCPU_STAT(fpu_reload), NULL }, + { "insn_emulation", VCPU_STAT(insn_emulation), NULL }, + { "insn_emulation_fail", VCPU_STAT(insn_emulation_fail), NULL }, + { "irq_injections", VCPU_STAT(irq_injections), NULL }, + { "nmi_injections", VCPU_STAT(nmi_injections), NULL }, + { "mmu_shadow_zapped", VM_STAT(mmu_shadow_zapped), NULL }, + { "mmu_pte_write", VM_STAT(mmu_pte_write), NULL }, + { "mmu_pte_updated", VM_STAT(mmu_pte_updated), NULL }, + { "mmu_pde_zapped", VM_STAT(mmu_pde_zapped), NULL }, + { "mmu_flooded", VM_STAT(mmu_flooded), NULL }, + { "mmu_recycled", VM_STAT(mmu_recycled), NULL }, + { "mmu_cache_miss", VM_STAT(mmu_cache_miss), NULL }, + { "mmu_unsync", VM_STAT(mmu_unsync), NULL }, + { "remote_tlb_flush", VM_STAT(remote_tlb_flush), NULL }, + { "largepages", VM_STAT(lpages), NULL }, { NULL } }; @@ -1735,6 +1735,8 @@ long kvm_arch_dev_ioctl(struct file *fil if (n < msr_list.nmsrs) goto out; r = -EFAULT; + if (num_msrs_to_save > ARRAY_SIZE(msrs_to_save)) + goto out; if (copy_to_user(user_msr_list->indices, &msrs_to_save, num_msrs_to_save * sizeof(u32))) goto out; @@ -2192,7 +2194,7 @@ static int kvm_vcpu_ioctl_set_lapic(stru static int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu *vcpu, struct kvm_interrupt *irq) { - if (irq->irq < 0 || irq->irq >= 256) + if (irq->irq >= 256) return -EINVAL; if (irqchip_in_kernel(vcpu->kvm)) return -ENXIO; @@ -4215,10 +4217,10 @@ void kvm_after_handle_nmi(struct kvm_vcp } EXPORT_SYMBOL_GPL(kvm_after_handle_nmi); -int kvm_arch_init(void *opaque) +int kvm_arch_init(const void *opaque) { int r; - struct kvm_x86_ops *ops = (struct kvm_x86_ops *)opaque; + const struct kvm_x86_ops *ops = (const struct kvm_x86_ops *)opaque; if (kvm_x86_ops) { printk(KERN_ERR "kvm: already loaded the other module\n"); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/lib/atomic64_cx8_32.S linux-2.6.36.4-pax/arch/x86/lib/atomic64_cx8_32.S --- linux-2.6.36.4/arch/x86/lib/atomic64_cx8_32.S 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/lib/atomic64_cx8_32.S 2010-10-27 22:58:07.000000000 +0200 @@ -86,13 +86,23 @@ ENTRY(atomic64_\func\()_return_cx8) movl %edx, %ecx \ins\()l %esi, %ebx \insc\()l %edi, %ecx + +#ifdef CONFIG_PAX_REFCOUNT + into +2: + _ASM_EXTABLE(2b, 3f) +#endif + LOCK_PREFIX cmpxchg8b (%ebp) jne 1b - -10: movl %ebx, %eax movl %ecx, %edx + +#ifdef CONFIG_PAX_REFCOUNT +3: +#endif + RESTORE edi RESTORE esi RESTORE ebx @@ -116,13 +126,24 @@ ENTRY(atomic64_\func\()_return_cx8) movl %edx, %ecx \ins\()l $1, %ebx \insc\()l $0, %ecx + +#ifdef CONFIG_PAX_REFCOUNT + into +2: + _ASM_EXTABLE(2b, 3f) +#endif + LOCK_PREFIX cmpxchg8b (%esi) jne 1b -10: movl %ebx, %eax movl %ecx, %edx + +#ifdef CONFIG_PAX_REFCOUNT +3: +#endif + RESTORE ebx ret CFI_ENDPROC @@ -176,6 +197,13 @@ ENTRY(atomic64_add_unless_cx8) movl %edx, %ecx addl %esi, %ebx adcl %edi, %ecx + +#ifdef CONFIG_PAX_REFCOUNT + into +1234: + _ASM_EXTABLE(1234b, 1234b) +#endif + LOCK_PREFIX cmpxchg8b (%ebp) jne 1b @@ -208,6 +236,13 @@ ENTRY(atomic64_inc_not_zero_cx8) movl %edx, %ecx addl $1, %ebx adcl $0, %ecx + +#ifdef CONFIG_PAX_REFCOUNT + into +1234: + _ASM_EXTABLE(1234b, 1234b) +#endif + LOCK_PREFIX cmpxchg8b (%esi) jne 1b diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/lib/checksum_32.S linux-2.6.36.4-pax/arch/x86/lib/checksum_32.S --- linux-2.6.36.4/arch/x86/lib/checksum_32.S 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/lib/checksum_32.S 2011-01-07 01:12:14.000000000 +0100 @@ -28,7 +28,8 @@ #include #include #include - +#include + /* * computes a partial checksum, e.g. for TCP/UDP fragments */ @@ -304,9 +305,28 @@ unsigned int csum_partial_copy_generic ( #define ARGBASE 16 #define FP 12 - -ENTRY(csum_partial_copy_generic) + +ENTRY(csum_partial_copy_generic_to_user) CFI_STARTPROC + +#ifdef CONFIG_PAX_MEMORY_UDEREF + pushl %gs + CFI_ADJUST_CFA_OFFSET 4 + popl %es + CFI_ADJUST_CFA_OFFSET -4 + jmp csum_partial_copy_generic +#endif + +ENTRY(csum_partial_copy_generic_from_user) + +#ifdef CONFIG_PAX_MEMORY_UDEREF + pushl %gs + CFI_ADJUST_CFA_OFFSET 4 + popl %ds + CFI_ADJUST_CFA_OFFSET -4 +#endif + +ENTRY(csum_partial_copy_generic) subl $4,%esp CFI_ADJUST_CFA_OFFSET 4 pushl %edi @@ -331,7 +351,7 @@ ENTRY(csum_partial_copy_generic) jmp 4f SRC(1: movw (%esi), %bx ) addl $2, %esi -DST( movw %bx, (%edi) ) +DST( movw %bx, %es:(%edi) ) addl $2, %edi addw %bx, %ax adcl $0, %eax @@ -343,30 +363,30 @@ DST( movw %bx, (%edi) ) SRC(1: movl (%esi), %ebx ) SRC( movl 4(%esi), %edx ) adcl %ebx, %eax -DST( movl %ebx, (%edi) ) +DST( movl %ebx, %es:(%edi) ) adcl %edx, %eax -DST( movl %edx, 4(%edi) ) +DST( movl %edx, %es:4(%edi) ) SRC( movl 8(%esi), %ebx ) SRC( movl 12(%esi), %edx ) adcl %ebx, %eax -DST( movl %ebx, 8(%edi) ) +DST( movl %ebx, %es:8(%edi) ) adcl %edx, %eax -DST( movl %edx, 12(%edi) ) +DST( movl %edx, %es:12(%edi) ) SRC( movl 16(%esi), %ebx ) SRC( movl 20(%esi), %edx ) adcl %ebx, %eax -DST( movl %ebx, 16(%edi) ) +DST( movl %ebx, %es:16(%edi) ) adcl %edx, %eax -DST( movl %edx, 20(%edi) ) +DST( movl %edx, %es:20(%edi) ) SRC( movl 24(%esi), %ebx ) SRC( movl 28(%esi), %edx ) adcl %ebx, %eax -DST( movl %ebx, 24(%edi) ) +DST( movl %ebx, %es:24(%edi) ) adcl %edx, %eax -DST( movl %edx, 28(%edi) ) +DST( movl %edx, %es:28(%edi) ) lea 32(%esi), %esi lea 32(%edi), %edi @@ -380,7 +400,7 @@ DST( movl %edx, 28(%edi) ) shrl $2, %edx # This clears CF SRC(3: movl (%esi), %ebx ) adcl %ebx, %eax -DST( movl %ebx, (%edi) ) +DST( movl %ebx, %es:(%edi) ) lea 4(%esi), %esi lea 4(%edi), %edi dec %edx @@ -392,12 +412,12 @@ DST( movl %ebx, (%edi) ) jb 5f SRC( movw (%esi), %cx ) leal 2(%esi), %esi -DST( movw %cx, (%edi) ) +DST( movw %cx, %es:(%edi) ) leal 2(%edi), %edi je 6f shll $16,%ecx SRC(5: movb (%esi), %cl ) -DST( movb %cl, (%edi) ) +DST( movb %cl, %es:(%edi) ) 6: addl %ecx, %eax adcl $0, %eax 7: @@ -408,7 +428,7 @@ DST( movb %cl, (%edi) ) 6001: movl ARGBASE+20(%esp), %ebx # src_err_ptr - movl $-EFAULT, (%ebx) + movl $-EFAULT, %ss:(%ebx) # zero the complete destination - computing the rest # is too much work @@ -421,11 +441,19 @@ DST( movb %cl, (%edi) ) 6002: movl ARGBASE+24(%esp), %ebx # dst_err_ptr - movl $-EFAULT,(%ebx) + movl $-EFAULT,%ss:(%ebx) jmp 5000b .previous + pushl %ss + CFI_ADJUST_CFA_OFFSET 4 + popl %ds + CFI_ADJUST_CFA_OFFSET -4 + pushl %ss + CFI_ADJUST_CFA_OFFSET 4 + popl %es + CFI_ADJUST_CFA_OFFSET -4 popl %ebx CFI_ADJUST_CFA_OFFSET -4 CFI_RESTORE ebx @@ -439,26 +467,47 @@ DST( movb %cl, (%edi) ) CFI_ADJUST_CFA_OFFSET -4 ret CFI_ENDPROC -ENDPROC(csum_partial_copy_generic) +ENDPROC(csum_partial_copy_generic_to_user) #else /* Version for PentiumII/PPro */ #define ROUND1(x) \ + nop; nop; nop; \ SRC(movl x(%esi), %ebx ) ; \ addl %ebx, %eax ; \ - DST(movl %ebx, x(%edi) ) ; + DST(movl %ebx, %es:x(%edi)) ; #define ROUND(x) \ + nop; nop; nop; \ SRC(movl x(%esi), %ebx ) ; \ adcl %ebx, %eax ; \ - DST(movl %ebx, x(%edi) ) ; + DST(movl %ebx, %es:x(%edi)) ; #define ARGBASE 12 - -ENTRY(csum_partial_copy_generic) + +ENTRY(csum_partial_copy_generic_to_user) CFI_STARTPROC + +#ifdef CONFIG_PAX_MEMORY_UDEREF + pushl %gs + CFI_ADJUST_CFA_OFFSET 4 + popl %es + CFI_ADJUST_CFA_OFFSET -4 + jmp csum_partial_copy_generic +#endif + +ENTRY(csum_partial_copy_generic_from_user) + +#ifdef CONFIG_PAX_MEMORY_UDEREF + pushl %gs + CFI_ADJUST_CFA_OFFSET 4 + popl %ds + CFI_ADJUST_CFA_OFFSET -4 +#endif + +ENTRY(csum_partial_copy_generic) pushl %ebx CFI_ADJUST_CFA_OFFSET 4 CFI_REL_OFFSET ebx, 0 @@ -482,7 +531,7 @@ ENTRY(csum_partial_copy_generic) subl %ebx, %edi lea -1(%esi),%edx andl $-32,%edx - lea 3f(%ebx,%ebx), %ebx + lea 3f(%ebx,%ebx,2), %ebx testl %esi, %esi jmp *%ebx 1: addl $64,%esi @@ -503,19 +552,19 @@ ENTRY(csum_partial_copy_generic) jb 5f SRC( movw (%esi), %dx ) leal 2(%esi), %esi -DST( movw %dx, (%edi) ) +DST( movw %dx, %es:(%edi) ) leal 2(%edi), %edi je 6f shll $16,%edx 5: SRC( movb (%esi), %dl ) -DST( movb %dl, (%edi) ) +DST( movb %dl, %es:(%edi) ) 6: addl %edx, %eax adcl $0, %eax 7: .section .fixup, "ax" 6001: movl ARGBASE+20(%esp), %ebx # src_err_ptr - movl $-EFAULT, (%ebx) + movl $-EFAULT, %ss:(%ebx) # zero the complete destination (computing the rest is too much work) movl ARGBASE+8(%esp),%edi # dst movl ARGBASE+12(%esp),%ecx # len @@ -523,10 +572,21 @@ DST( movb %dl, (%edi) ) rep; stosb jmp 7b 6002: movl ARGBASE+24(%esp), %ebx # dst_err_ptr - movl $-EFAULT, (%ebx) + movl $-EFAULT, %ss:(%ebx) jmp 7b .previous +#ifdef CONFIG_PAX_MEMORY_UDEREF + pushl %ss + CFI_ADJUST_CFA_OFFSET 4 + popl %ds + CFI_ADJUST_CFA_OFFSET -4 + pushl %ss + CFI_ADJUST_CFA_OFFSET 4 + popl %es + CFI_ADJUST_CFA_OFFSET -4 +#endif + popl %esi CFI_ADJUST_CFA_OFFSET -4 CFI_RESTORE esi @@ -538,7 +598,7 @@ DST( movb %dl, (%edi) ) CFI_RESTORE ebx ret CFI_ENDPROC -ENDPROC(csum_partial_copy_generic) +ENDPROC(csum_partial_copy_generic_to_user) #undef ROUND #undef ROUND1 diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/lib/clear_page_64.S linux-2.6.36.4-pax/arch/x86/lib/clear_page_64.S --- linux-2.6.36.4/arch/x86/lib/clear_page_64.S 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/lib/clear_page_64.S 2010-10-27 22:58:07.000000000 +0200 @@ -43,7 +43,7 @@ ENDPROC(clear_page) #include - .section .altinstr_replacement,"ax" + .section .altinstr_replacement,"a" 1: .byte 0xeb /* jmp */ .byte (clear_page_c - clear_page) - (2f - 1b) /* offset */ 2: diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/lib/copy_page_64.S linux-2.6.36.4-pax/arch/x86/lib/copy_page_64.S --- linux-2.6.36.4/arch/x86/lib/copy_page_64.S 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/lib/copy_page_64.S 2010-10-27 22:58:07.000000000 +0200 @@ -104,7 +104,7 @@ ENDPROC(copy_page) #include - .section .altinstr_replacement,"ax" + .section .altinstr_replacement,"a" 1: .byte 0xeb /* jmp */ .byte (copy_page_c - copy_page) - (2f - 1b) /* offset */ 2: diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/lib/copy_user_64.S linux-2.6.36.4-pax/arch/x86/lib/copy_user_64.S --- linux-2.6.36.4/arch/x86/lib/copy_user_64.S 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/lib/copy_user_64.S 2010-10-27 22:58:07.000000000 +0200 @@ -15,13 +15,14 @@ #include #include #include +#include .macro ALTERNATIVE_JUMP feature,orig,alt 0: .byte 0xe9 /* 32bit jump */ .long \orig-1f /* by default jump to orig */ 1: - .section .altinstr_replacement,"ax" + .section .altinstr_replacement,"a" 2: .byte 0xe9 /* near jump with 32bit immediate */ .long \alt-1b /* offset */ /* or alternatively to alt */ .previous @@ -64,37 +65,13 @@ #endif .endm -/* Standard copy_to_user with segment limit checking */ -ENTRY(_copy_to_user) - CFI_STARTPROC - GET_THREAD_INFO(%rax) - movq %rdi,%rcx - addq %rdx,%rcx - jc bad_to_user - cmpq TI_addr_limit(%rax),%rcx - jae bad_to_user - ALTERNATIVE_JUMP X86_FEATURE_REP_GOOD,copy_user_generic_unrolled,copy_user_generic_string - CFI_ENDPROC -ENDPROC(_copy_to_user) - -/* Standard copy_from_user with segment limit checking */ -ENTRY(_copy_from_user) - CFI_STARTPROC - GET_THREAD_INFO(%rax) - movq %rsi,%rcx - addq %rdx,%rcx - jc bad_from_user - cmpq TI_addr_limit(%rax),%rcx - jae bad_from_user - ALTERNATIVE_JUMP X86_FEATURE_REP_GOOD,copy_user_generic_unrolled,copy_user_generic_string - CFI_ENDPROC -ENDPROC(_copy_from_user) - .section .fixup,"ax" /* must zero dest */ ENTRY(bad_from_user) bad_from_user: CFI_STARTPROC + testl %edx,%edx + js bad_to_user movl %edx,%ecx xorl %eax,%eax rep diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/lib/copy_user_nocache_64.S linux-2.6.36.4-pax/arch/x86/lib/copy_user_nocache_64.S --- linux-2.6.36.4/arch/x86/lib/copy_user_nocache_64.S 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/lib/copy_user_nocache_64.S 2010-10-27 22:58:07.000000000 +0200 @@ -14,6 +14,7 @@ #include #include #include +#include .macro ALIGN_DESTINATION #ifdef FIX_ALIGNMENT @@ -50,6 +51,15 @@ */ ENTRY(__copy_user_nocache) CFI_STARTPROC + +#ifdef CONFIG_PAX_MEMORY_UDEREF + mov $PAX_USER_SHADOW_BASE,%rcx + cmp %rcx,%rsi + jae 1f + add %rcx,%rsi +1: +#endif + cmpl $8,%edx jb 20f /* less then 8 bytes, go to byte copy loop */ ALIGN_DESTINATION diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/lib/csum-wrappers_64.c linux-2.6.36.4-pax/arch/x86/lib/csum-wrappers_64.c --- linux-2.6.36.4/arch/x86/lib/csum-wrappers_64.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/lib/csum-wrappers_64.c 2010-10-27 22:58:07.000000000 +0200 @@ -52,6 +52,8 @@ csum_partial_copy_from_user(const void _ len -= 2; } } + if ((unsigned long)src < PAX_USER_SHADOW_BASE) + src += PAX_USER_SHADOW_BASE; isum = csum_partial_copy_generic((__force const void *)src, dst, len, isum, errp, NULL); if (unlikely(*errp)) @@ -105,6 +107,8 @@ csum_partial_copy_to_user(const void *sr } *errp = 0; + if ((unsigned long)dst < PAX_USER_SHADOW_BASE) + dst += PAX_USER_SHADOW_BASE; return csum_partial_copy_generic(src, (void __force *)dst, len, isum, NULL, errp); } diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/lib/getuser.S linux-2.6.36.4-pax/arch/x86/lib/getuser.S --- linux-2.6.36.4/arch/x86/lib/getuser.S 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/lib/getuser.S 2011-03-07 20:16:33.000000000 +0100 @@ -33,14 +33,35 @@ #include #include #include +#include +#include + +#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_MEMORY_UDEREF) +#define __copyuser_seg gs; +#else +#define __copyuser_seg +#endif .text ENTRY(__get_user_1) CFI_STARTPROC + +#if !defined(CONFIG_X86_32) || !defined(CONFIG_PAX_MEMORY_UDEREF) GET_THREAD_INFO(%_ASM_DX) cmp TI_addr_limit(%_ASM_DX),%_ASM_AX jae bad_get_user -1: movzb (%_ASM_AX),%edx + +#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF) + mov $PAX_USER_SHADOW_BASE,%_ASM_DX + cmp %_ASM_DX,%_ASM_AX + jae 1234f + add %_ASM_DX,%_ASM_AX +1234: +#endif + +#endif + +1: __copyuser_seg movzb (%_ASM_AX),%edx xor %eax,%eax ret CFI_ENDPROC @@ -49,11 +70,24 @@ ENDPROC(__get_user_1) ENTRY(__get_user_2) CFI_STARTPROC add $1,%_ASM_AX + +#if !defined(CONFIG_X86_32) || !defined(CONFIG_PAX_MEMORY_UDEREF) jc bad_get_user GET_THREAD_INFO(%_ASM_DX) cmp TI_addr_limit(%_ASM_DX),%_ASM_AX jae bad_get_user -2: movzwl -1(%_ASM_AX),%edx + +#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF) + mov $PAX_USER_SHADOW_BASE,%_ASM_DX + cmp %_ASM_DX,%_ASM_AX + jae 1234f + add %_ASM_DX,%_ASM_AX +1234: +#endif + +#endif + +2: __copyuser_seg movzwl -1(%_ASM_AX),%edx xor %eax,%eax ret CFI_ENDPROC @@ -62,11 +96,24 @@ ENDPROC(__get_user_2) ENTRY(__get_user_4) CFI_STARTPROC add $3,%_ASM_AX + +#if !defined(CONFIG_X86_32) || !defined(CONFIG_PAX_MEMORY_UDEREF) jc bad_get_user GET_THREAD_INFO(%_ASM_DX) cmp TI_addr_limit(%_ASM_DX),%_ASM_AX jae bad_get_user -3: mov -3(%_ASM_AX),%edx + +#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF) + mov $PAX_USER_SHADOW_BASE,%_ASM_DX + cmp %_ASM_DX,%_ASM_AX + jae 1234f + add %_ASM_DX,%_ASM_AX +1234: +#endif + +#endif + +3: __copyuser_seg mov -3(%_ASM_AX),%edx xor %eax,%eax ret CFI_ENDPROC @@ -80,6 +127,15 @@ ENTRY(__get_user_8) GET_THREAD_INFO(%_ASM_DX) cmp TI_addr_limit(%_ASM_DX),%_ASM_AX jae bad_get_user + +#ifdef CONFIG_PAX_MEMORY_UDEREF + mov $PAX_USER_SHADOW_BASE,%_ASM_DX + cmp %_ASM_DX,%_ASM_AX + jae 1234f + add %_ASM_DX,%_ASM_AX +1234: +#endif + 4: movq -7(%_ASM_AX),%_ASM_DX xor %eax,%eax ret diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/lib/insn.c linux-2.6.36.4-pax/arch/x86/lib/insn.c --- linux-2.6.36.4/arch/x86/lib/insn.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/lib/insn.c 2011-01-19 23:01:08.000000000 +0100 @@ -21,6 +21,11 @@ #include #include #include +#ifdef __KERNEL__ +#include +#else +#define ktla_ktva(addr) addr +#endif #define get_next(t, insn) \ ({t r; r = *(t*)insn->next_byte; insn->next_byte += sizeof(t); r; }) @@ -40,8 +45,8 @@ void insn_init(struct insn *insn, const void *kaddr, int x86_64) { memset(insn, 0, sizeof(*insn)); - insn->kaddr = kaddr; - insn->next_byte = kaddr; + insn->kaddr = ktla_ktva(kaddr); + insn->next_byte = ktla_ktva(kaddr); insn->x86_64 = x86_64 ? 1 : 0; insn->opnd_bytes = 4; if (x86_64) diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/lib/mmx_32.c linux-2.6.36.4-pax/arch/x86/lib/mmx_32.c --- linux-2.6.36.4/arch/x86/lib/mmx_32.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/lib/mmx_32.c 2010-10-27 22:58:07.000000000 +0200 @@ -29,6 +29,7 @@ void *_mmx_memcpy(void *to, const void * { void *p; int i; + unsigned long cr0; if (unlikely(in_interrupt())) return __memcpy(to, from, len); @@ -39,44 +40,72 @@ void *_mmx_memcpy(void *to, const void * kernel_fpu_begin(); __asm__ __volatile__ ( - "1: prefetch (%0)\n" /* This set is 28 bytes */ - " prefetch 64(%0)\n" - " prefetch 128(%0)\n" - " prefetch 192(%0)\n" - " prefetch 256(%0)\n" + "1: prefetch (%1)\n" /* This set is 28 bytes */ + " prefetch 64(%1)\n" + " prefetch 128(%1)\n" + " prefetch 192(%1)\n" + " prefetch 256(%1)\n" "2: \n" ".section .fixup, \"ax\"\n" - "3: movw $0x1AEB, 1b\n" /* jmp on 26 bytes */ + "3: \n" + +#ifdef CONFIG_PAX_KERNEXEC + " movl %%cr0, %0\n" + " movl %0, %%eax\n" + " andl $0xFFFEFFFF, %%eax\n" + " movl %%eax, %%cr0\n" +#endif + + " movw $0x1AEB, 1b\n" /* jmp on 26 bytes */ + +#ifdef CONFIG_PAX_KERNEXEC + " movl %0, %%cr0\n" +#endif + " jmp 2b\n" ".previous\n" _ASM_EXTABLE(1b, 3b) - : : "r" (from)); + : "=&r" (cr0) : "r" (from) : "ax"); for ( ; i > 5; i--) { __asm__ __volatile__ ( - "1: prefetch 320(%0)\n" - "2: movq (%0), %%mm0\n" - " movq 8(%0), %%mm1\n" - " movq 16(%0), %%mm2\n" - " movq 24(%0), %%mm3\n" - " movq %%mm0, (%1)\n" - " movq %%mm1, 8(%1)\n" - " movq %%mm2, 16(%1)\n" - " movq %%mm3, 24(%1)\n" - " movq 32(%0), %%mm0\n" - " movq 40(%0), %%mm1\n" - " movq 48(%0), %%mm2\n" - " movq 56(%0), %%mm3\n" - " movq %%mm0, 32(%1)\n" - " movq %%mm1, 40(%1)\n" - " movq %%mm2, 48(%1)\n" - " movq %%mm3, 56(%1)\n" + "1: prefetch 320(%1)\n" + "2: movq (%1), %%mm0\n" + " movq 8(%1), %%mm1\n" + " movq 16(%1), %%mm2\n" + " movq 24(%1), %%mm3\n" + " movq %%mm0, (%2)\n" + " movq %%mm1, 8(%2)\n" + " movq %%mm2, 16(%2)\n" + " movq %%mm3, 24(%2)\n" + " movq 32(%1), %%mm0\n" + " movq 40(%1), %%mm1\n" + " movq 48(%1), %%mm2\n" + " movq 56(%1), %%mm3\n" + " movq %%mm0, 32(%2)\n" + " movq %%mm1, 40(%2)\n" + " movq %%mm2, 48(%2)\n" + " movq %%mm3, 56(%2)\n" ".section .fixup, \"ax\"\n" - "3: movw $0x05EB, 1b\n" /* jmp on 5 bytes */ + "3:\n" + +#ifdef CONFIG_PAX_KERNEXEC + " movl %%cr0, %0\n" + " movl %0, %%eax\n" + " andl $0xFFFEFFFF, %%eax\n" + " movl %%eax, %%cr0\n" +#endif + + " movw $0x05EB, 1b\n" /* jmp on 5 bytes */ + +#ifdef CONFIG_PAX_KERNEXEC + " movl %0, %%cr0\n" +#endif + " jmp 2b\n" ".previous\n" _ASM_EXTABLE(1b, 3b) - : : "r" (from), "r" (to) : "memory"); + : "=&r" (cr0) : "r" (from), "r" (to) : "memory", "ax"); from += 64; to += 64; @@ -158,6 +187,7 @@ static void fast_clear_page(void *page) static void fast_copy_page(void *to, void *from) { int i; + unsigned long cr0; kernel_fpu_begin(); @@ -166,42 +196,70 @@ static void fast_copy_page(void *to, voi * but that is for later. -AV */ __asm__ __volatile__( - "1: prefetch (%0)\n" - " prefetch 64(%0)\n" - " prefetch 128(%0)\n" - " prefetch 192(%0)\n" - " prefetch 256(%0)\n" + "1: prefetch (%1)\n" + " prefetch 64(%1)\n" + " prefetch 128(%1)\n" + " prefetch 192(%1)\n" + " prefetch 256(%1)\n" "2: \n" ".section .fixup, \"ax\"\n" - "3: movw $0x1AEB, 1b\n" /* jmp on 26 bytes */ + "3: \n" + +#ifdef CONFIG_PAX_KERNEXEC + " movl %%cr0, %0\n" + " movl %0, %%eax\n" + " andl $0xFFFEFFFF, %%eax\n" + " movl %%eax, %%cr0\n" +#endif + + " movw $0x1AEB, 1b\n" /* jmp on 26 bytes */ + +#ifdef CONFIG_PAX_KERNEXEC + " movl %0, %%cr0\n" +#endif + " jmp 2b\n" ".previous\n" - _ASM_EXTABLE(1b, 3b) : : "r" (from)); + _ASM_EXTABLE(1b, 3b) : "=&r" (cr0) : "r" (from) : "ax"); for (i = 0; i < (4096-320)/64; i++) { __asm__ __volatile__ ( - "1: prefetch 320(%0)\n" - "2: movq (%0), %%mm0\n" - " movntq %%mm0, (%1)\n" - " movq 8(%0), %%mm1\n" - " movntq %%mm1, 8(%1)\n" - " movq 16(%0), %%mm2\n" - " movntq %%mm2, 16(%1)\n" - " movq 24(%0), %%mm3\n" - " movntq %%mm3, 24(%1)\n" - " movq 32(%0), %%mm4\n" - " movntq %%mm4, 32(%1)\n" - " movq 40(%0), %%mm5\n" - " movntq %%mm5, 40(%1)\n" - " movq 48(%0), %%mm6\n" - " movntq %%mm6, 48(%1)\n" - " movq 56(%0), %%mm7\n" - " movntq %%mm7, 56(%1)\n" + "1: prefetch 320(%1)\n" + "2: movq (%1), %%mm0\n" + " movntq %%mm0, (%2)\n" + " movq 8(%1), %%mm1\n" + " movntq %%mm1, 8(%2)\n" + " movq 16(%1), %%mm2\n" + " movntq %%mm2, 16(%2)\n" + " movq 24(%1), %%mm3\n" + " movntq %%mm3, 24(%2)\n" + " movq 32(%1), %%mm4\n" + " movntq %%mm4, 32(%2)\n" + " movq 40(%1), %%mm5\n" + " movntq %%mm5, 40(%2)\n" + " movq 48(%1), %%mm6\n" + " movntq %%mm6, 48(%2)\n" + " movq 56(%1), %%mm7\n" + " movntq %%mm7, 56(%2)\n" ".section .fixup, \"ax\"\n" - "3: movw $0x05EB, 1b\n" /* jmp on 5 bytes */ + "3:\n" + +#ifdef CONFIG_PAX_KERNEXEC + " movl %%cr0, %0\n" + " movl %0, %%eax\n" + " andl $0xFFFEFFFF, %%eax\n" + " movl %%eax, %%cr0\n" +#endif + + " movw $0x05EB, 1b\n" /* jmp on 5 bytes */ + +#ifdef CONFIG_PAX_KERNEXEC + " movl %0, %%cr0\n" +#endif + " jmp 2b\n" ".previous\n" - _ASM_EXTABLE(1b, 3b) : : "r" (from), "r" (to) : "memory"); + _ASM_EXTABLE(1b, 3b) : "=&r" (cr0) : "r" (from), "r" (to) : "memory", "ax"); from += 64; to += 64; @@ -280,47 +338,76 @@ static void fast_clear_page(void *page) static void fast_copy_page(void *to, void *from) { int i; + unsigned long cr0; kernel_fpu_begin(); __asm__ __volatile__ ( - "1: prefetch (%0)\n" - " prefetch 64(%0)\n" - " prefetch 128(%0)\n" - " prefetch 192(%0)\n" - " prefetch 256(%0)\n" + "1: prefetch (%1)\n" + " prefetch 64(%1)\n" + " prefetch 128(%1)\n" + " prefetch 192(%1)\n" + " prefetch 256(%1)\n" "2: \n" ".section .fixup, \"ax\"\n" - "3: movw $0x1AEB, 1b\n" /* jmp on 26 bytes */ + "3: \n" + +#ifdef CONFIG_PAX_KERNEXEC + " movl %%cr0, %0\n" + " movl %0, %%eax\n" + " andl $0xFFFEFFFF, %%eax\n" + " movl %%eax, %%cr0\n" +#endif + + " movw $0x1AEB, 1b\n" /* jmp on 26 bytes */ + +#ifdef CONFIG_PAX_KERNEXEC + " movl %0, %%cr0\n" +#endif + " jmp 2b\n" ".previous\n" - _ASM_EXTABLE(1b, 3b) : : "r" (from)); + _ASM_EXTABLE(1b, 3b) : "=&r" (cr0) : "r" (from) : "ax"); for (i = 0; i < 4096/64; i++) { __asm__ __volatile__ ( - "1: prefetch 320(%0)\n" - "2: movq (%0), %%mm0\n" - " movq 8(%0), %%mm1\n" - " movq 16(%0), %%mm2\n" - " movq 24(%0), %%mm3\n" - " movq %%mm0, (%1)\n" - " movq %%mm1, 8(%1)\n" - " movq %%mm2, 16(%1)\n" - " movq %%mm3, 24(%1)\n" - " movq 32(%0), %%mm0\n" - " movq 40(%0), %%mm1\n" - " movq 48(%0), %%mm2\n" - " movq 56(%0), %%mm3\n" - " movq %%mm0, 32(%1)\n" - " movq %%mm1, 40(%1)\n" - " movq %%mm2, 48(%1)\n" - " movq %%mm3, 56(%1)\n" + "1: prefetch 320(%1)\n" + "2: movq (%1), %%mm0\n" + " movq 8(%1), %%mm1\n" + " movq 16(%1), %%mm2\n" + " movq 24(%1), %%mm3\n" + " movq %%mm0, (%2)\n" + " movq %%mm1, 8(%2)\n" + " movq %%mm2, 16(%2)\n" + " movq %%mm3, 24(%2)\n" + " movq 32(%1), %%mm0\n" + " movq 40(%1), %%mm1\n" + " movq 48(%1), %%mm2\n" + " movq 56(%1), %%mm3\n" + " movq %%mm0, 32(%2)\n" + " movq %%mm1, 40(%2)\n" + " movq %%mm2, 48(%2)\n" + " movq %%mm3, 56(%2)\n" ".section .fixup, \"ax\"\n" - "3: movw $0x05EB, 1b\n" /* jmp on 5 bytes */ + "3:\n" + +#ifdef CONFIG_PAX_KERNEXEC + " movl %%cr0, %0\n" + " movl %0, %%eax\n" + " andl $0xFFFEFFFF, %%eax\n" + " movl %%eax, %%cr0\n" +#endif + + " movw $0x05EB, 1b\n" /* jmp on 5 bytes */ + +#ifdef CONFIG_PAX_KERNEXEC + " movl %0, %%cr0\n" +#endif + " jmp 2b\n" ".previous\n" _ASM_EXTABLE(1b, 3b) - : : "r" (from), "r" (to) : "memory"); + : "=&r" (cr0) : "r" (from), "r" (to) : "memory", "ax"); from += 64; to += 64; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/lib/putuser.S linux-2.6.36.4-pax/arch/x86/lib/putuser.S --- linux-2.6.36.4/arch/x86/lib/putuser.S 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/lib/putuser.S 2011-03-07 20:17:24.000000000 +0100 @@ -15,7 +15,8 @@ #include #include #include - +#include +#include /* * __put_user_X @@ -29,52 +30,119 @@ * as they get called from within inline assembly. */ -#define ENTER CFI_STARTPROC ; \ - GET_THREAD_INFO(%_ASM_BX) +#define ENTER CFI_STARTPROC #define EXIT ret ; \ CFI_ENDPROC +#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF) +#define _DEST %_ASM_CX,%_ASM_BX +#else +#define _DEST %_ASM_CX +#endif + +#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_MEMORY_UDEREF) +#define __copyuser_seg gs; +#else +#define __copyuser_seg +#endif + .text ENTRY(__put_user_1) ENTER + +#if !defined(CONFIG_X86_32) || !defined(CONFIG_PAX_MEMORY_UDEREF) + GET_THREAD_INFO(%_ASM_BX) cmp TI_addr_limit(%_ASM_BX),%_ASM_CX jae bad_put_user -1: movb %al,(%_ASM_CX) + +#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF) + mov $PAX_USER_SHADOW_BASE,%_ASM_BX + cmp %_ASM_BX,%_ASM_CX + jb 1234f + xor %ebx,%ebx +1234: +#endif + +#endif + +1: __copyuser_seg movb %al,(_DEST) xor %eax,%eax EXIT ENDPROC(__put_user_1) ENTRY(__put_user_2) ENTER + +#if !defined(CONFIG_X86_32) || !defined(CONFIG_PAX_MEMORY_UDEREF) + GET_THREAD_INFO(%_ASM_BX) mov TI_addr_limit(%_ASM_BX),%_ASM_BX sub $1,%_ASM_BX cmp %_ASM_BX,%_ASM_CX jae bad_put_user -2: movw %ax,(%_ASM_CX) + +#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF) + mov $PAX_USER_SHADOW_BASE,%_ASM_BX + cmp %_ASM_BX,%_ASM_CX + jb 1234f + xor %ebx,%ebx +1234: +#endif + +#endif + +2: __copyuser_seg movw %ax,(_DEST) xor %eax,%eax EXIT ENDPROC(__put_user_2) ENTRY(__put_user_4) ENTER + +#if !defined(CONFIG_X86_32) || !defined(CONFIG_PAX_MEMORY_UDEREF) + GET_THREAD_INFO(%_ASM_BX) mov TI_addr_limit(%_ASM_BX),%_ASM_BX sub $3,%_ASM_BX cmp %_ASM_BX,%_ASM_CX jae bad_put_user -3: movl %eax,(%_ASM_CX) + +#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF) + mov $PAX_USER_SHADOW_BASE,%_ASM_BX + cmp %_ASM_BX,%_ASM_CX + jb 1234f + xor %ebx,%ebx +1234: +#endif + +#endif + +3: __copyuser_seg movl %eax,(_DEST) xor %eax,%eax EXIT ENDPROC(__put_user_4) ENTRY(__put_user_8) ENTER + +#if !defined(CONFIG_X86_32) || !defined(CONFIG_PAX_MEMORY_UDEREF) + GET_THREAD_INFO(%_ASM_BX) mov TI_addr_limit(%_ASM_BX),%_ASM_BX sub $7,%_ASM_BX cmp %_ASM_BX,%_ASM_CX jae bad_put_user -4: mov %_ASM_AX,(%_ASM_CX) + +#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF) + mov $PAX_USER_SHADOW_BASE,%_ASM_BX + cmp %_ASM_BX,%_ASM_CX + jb 1234f + xor %ebx,%ebx +1234: +#endif + +#endif + +4: __copyuser_seg mov %_ASM_AX,(_DEST) #ifdef CONFIG_X86_32 -5: movl %edx,4(%_ASM_CX) +5: __copyuser_seg movl %edx,4(_DEST) #endif xor %eax,%eax EXIT diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/lib/usercopy_32.c linux-2.6.36.4-pax/arch/x86/lib/usercopy_32.c --- linux-2.6.36.4/arch/x86/lib/usercopy_32.c 2010-12-15 21:30:06.000000000 +0100 +++ linux-2.6.36.4-pax/arch/x86/lib/usercopy_32.c 2011-03-07 21:02:42.000000000 +0100 @@ -43,7 +43,7 @@ do { \ __asm__ __volatile__( \ " testl %1,%1\n" \ " jz 2f\n" \ - "0: lodsb\n" \ + "0: "__copyuser_seg"lodsb\n" \ " stosb\n" \ " testb %%al,%%al\n" \ " jz 1f\n" \ @@ -128,10 +128,12 @@ do { \ int __d0; \ might_fault(); \ __asm__ __volatile__( \ + __COPYUSER_SET_ES \ "0: rep; stosl\n" \ " movl %2,%0\n" \ "1: rep; stosb\n" \ "2:\n" \ + __COPYUSER_RESTORE_ES \ ".section .fixup,\"ax\"\n" \ "3: lea 0(%2,%0,4),%0\n" \ " jmp 2b\n" \ @@ -200,6 +202,7 @@ long strnlen_user(const char __user *s, might_fault(); __asm__ __volatile__( + __COPYUSER_SET_ES " testl %0, %0\n" " jz 3f\n" " andl %0,%%ecx\n" @@ -208,6 +211,7 @@ long strnlen_user(const char __user *s, " subl %%ecx,%0\n" " addl %0,%%eax\n" "1:\n" + __COPYUSER_RESTORE_ES ".section .fixup,\"ax\"\n" "2: xorl %%eax,%%eax\n" " jmp 1b\n" @@ -227,7 +231,7 @@ EXPORT_SYMBOL(strnlen_user); #ifdef CONFIG_X86_INTEL_USERCOPY static unsigned long -__copy_user_intel(void __user *to, const void *from, unsigned long size) +__generic_copy_to_user_intel(void __user *to, const void *from, unsigned long size) { int d0, d1; __asm__ __volatile__( @@ -239,36 +243,36 @@ __copy_user_intel(void __user *to, const " .align 2,0x90\n" "3: movl 0(%4), %%eax\n" "4: movl 4(%4), %%edx\n" - "5: movl %%eax, 0(%3)\n" - "6: movl %%edx, 4(%3)\n" + "5: "__copyuser_seg" movl %%eax, 0(%3)\n" + "6: "__copyuser_seg" movl %%edx, 4(%3)\n" "7: movl 8(%4), %%eax\n" "8: movl 12(%4),%%edx\n" - "9: movl %%eax, 8(%3)\n" - "10: movl %%edx, 12(%3)\n" + "9: "__copyuser_seg" movl %%eax, 8(%3)\n" + "10: "__copyuser_seg" movl %%edx, 12(%3)\n" "11: movl 16(%4), %%eax\n" "12: movl 20(%4), %%edx\n" - "13: movl %%eax, 16(%3)\n" - "14: movl %%edx, 20(%3)\n" + "13: "__copyuser_seg" movl %%eax, 16(%3)\n" + "14: "__copyuser_seg" movl %%edx, 20(%3)\n" "15: movl 24(%4), %%eax\n" "16: movl 28(%4), %%edx\n" - "17: movl %%eax, 24(%3)\n" - "18: movl %%edx, 28(%3)\n" + "17: "__copyuser_seg" movl %%eax, 24(%3)\n" + "18: "__copyuser_seg" movl %%edx, 28(%3)\n" "19: movl 32(%4), %%eax\n" "20: movl 36(%4), %%edx\n" - "21: movl %%eax, 32(%3)\n" - "22: movl %%edx, 36(%3)\n" + "21: "__copyuser_seg" movl %%eax, 32(%3)\n" + "22: "__copyuser_seg" movl %%edx, 36(%3)\n" "23: movl 40(%4), %%eax\n" "24: movl 44(%4), %%edx\n" - "25: movl %%eax, 40(%3)\n" - "26: movl %%edx, 44(%3)\n" + "25: "__copyuser_seg" movl %%eax, 40(%3)\n" + "26: "__copyuser_seg" movl %%edx, 44(%3)\n" "27: movl 48(%4), %%eax\n" "28: movl 52(%4), %%edx\n" - "29: movl %%eax, 48(%3)\n" - "30: movl %%edx, 52(%3)\n" + "29: "__copyuser_seg" movl %%eax, 48(%3)\n" + "30: "__copyuser_seg" movl %%edx, 52(%3)\n" "31: movl 56(%4), %%eax\n" "32: movl 60(%4), %%edx\n" - "33: movl %%eax, 56(%3)\n" - "34: movl %%edx, 60(%3)\n" + "33: "__copyuser_seg" movl %%eax, 56(%3)\n" + "34: "__copyuser_seg" movl %%edx, 60(%3)\n" " addl $-64, %0\n" " addl $64, %4\n" " addl $64, %3\n" @@ -278,10 +282,119 @@ __copy_user_intel(void __user *to, const " shrl $2, %0\n" " andl $3, %%eax\n" " cld\n" + __COPYUSER_SET_ES "99: rep; movsl\n" "36: movl %%eax, %0\n" "37: rep; movsb\n" "100:\n" + __COPYUSER_RESTORE_ES + ".section .fixup,\"ax\"\n" + "101: lea 0(%%eax,%0,4),%0\n" + " jmp 100b\n" + ".previous\n" + ".section __ex_table,\"a\"\n" + " .align 4\n" + " .long 1b,100b\n" + " .long 2b,100b\n" + " .long 3b,100b\n" + " .long 4b,100b\n" + " .long 5b,100b\n" + " .long 6b,100b\n" + " .long 7b,100b\n" + " .long 8b,100b\n" + " .long 9b,100b\n" + " .long 10b,100b\n" + " .long 11b,100b\n" + " .long 12b,100b\n" + " .long 13b,100b\n" + " .long 14b,100b\n" + " .long 15b,100b\n" + " .long 16b,100b\n" + " .long 17b,100b\n" + " .long 18b,100b\n" + " .long 19b,100b\n" + " .long 20b,100b\n" + " .long 21b,100b\n" + " .long 22b,100b\n" + " .long 23b,100b\n" + " .long 24b,100b\n" + " .long 25b,100b\n" + " .long 26b,100b\n" + " .long 27b,100b\n" + " .long 28b,100b\n" + " .long 29b,100b\n" + " .long 30b,100b\n" + " .long 31b,100b\n" + " .long 32b,100b\n" + " .long 33b,100b\n" + " .long 34b,100b\n" + " .long 35b,100b\n" + " .long 36b,100b\n" + " .long 37b,100b\n" + " .long 99b,101b\n" + ".previous" + : "=&c"(size), "=&D" (d0), "=&S" (d1) + : "1"(to), "2"(from), "0"(size) + : "eax", "edx", "memory"); + return size; +} + +static unsigned long +__generic_copy_from_user_intel(void *to, const void __user *from, unsigned long size) +{ + int d0, d1; + __asm__ __volatile__( + " .align 2,0x90\n" + "1: "__copyuser_seg" movl 32(%4), %%eax\n" + " cmpl $67, %0\n" + " jbe 3f\n" + "2: "__copyuser_seg" movl 64(%4), %%eax\n" + " .align 2,0x90\n" + "3: "__copyuser_seg" movl 0(%4), %%eax\n" + "4: "__copyuser_seg" movl 4(%4), %%edx\n" + "5: movl %%eax, 0(%3)\n" + "6: movl %%edx, 4(%3)\n" + "7: "__copyuser_seg" movl 8(%4), %%eax\n" + "8: "__copyuser_seg" movl 12(%4),%%edx\n" + "9: movl %%eax, 8(%3)\n" + "10: movl %%edx, 12(%3)\n" + "11: "__copyuser_seg" movl 16(%4), %%eax\n" + "12: "__copyuser_seg" movl 20(%4), %%edx\n" + "13: movl %%eax, 16(%3)\n" + "14: movl %%edx, 20(%3)\n" + "15: "__copyuser_seg" movl 24(%4), %%eax\n" + "16: "__copyuser_seg" movl 28(%4), %%edx\n" + "17: movl %%eax, 24(%3)\n" + "18: movl %%edx, 28(%3)\n" + "19: "__copyuser_seg" movl 32(%4), %%eax\n" + "20: "__copyuser_seg" movl 36(%4), %%edx\n" + "21: movl %%eax, 32(%3)\n" + "22: movl %%edx, 36(%3)\n" + "23: "__copyuser_seg" movl 40(%4), %%eax\n" + "24: "__copyuser_seg" movl 44(%4), %%edx\n" + "25: movl %%eax, 40(%3)\n" + "26: movl %%edx, 44(%3)\n" + "27: "__copyuser_seg" movl 48(%4), %%eax\n" + "28: "__copyuser_seg" movl 52(%4), %%edx\n" + "29: movl %%eax, 48(%3)\n" + "30: movl %%edx, 52(%3)\n" + "31: "__copyuser_seg" movl 56(%4), %%eax\n" + "32: "__copyuser_seg" movl 60(%4), %%edx\n" + "33: movl %%eax, 56(%3)\n" + "34: movl %%edx, 60(%3)\n" + " addl $-64, %0\n" + " addl $64, %4\n" + " addl $64, %3\n" + " cmpl $63, %0\n" + " ja 1b\n" + "35: movl %0, %%eax\n" + " shrl $2, %0\n" + " andl $3, %%eax\n" + " cld\n" + "99: rep; "__copyuser_seg" movsl\n" + "36: movl %%eax, %0\n" + "37: rep; "__copyuser_seg" movsb\n" + "100:\n" ".section .fixup,\"ax\"\n" "101: lea 0(%%eax,%0,4),%0\n" " jmp 100b\n" @@ -339,41 +452,41 @@ __copy_user_zeroing_intel(void *to, cons int d0, d1; __asm__ __volatile__( " .align 2,0x90\n" - "0: movl 32(%4), %%eax\n" + "0: "__copyuser_seg" movl 32(%4), %%eax\n" " cmpl $67, %0\n" " jbe 2f\n" - "1: movl 64(%4), %%eax\n" + "1: "__copyuser_seg" movl 64(%4), %%eax\n" " .align 2,0x90\n" - "2: movl 0(%4), %%eax\n" - "21: movl 4(%4), %%edx\n" + "2: "__copyuser_seg" movl 0(%4), %%eax\n" + "21: "__copyuser_seg" movl 4(%4), %%edx\n" " movl %%eax, 0(%3)\n" " movl %%edx, 4(%3)\n" - "3: movl 8(%4), %%eax\n" - "31: movl 12(%4),%%edx\n" + "3: "__copyuser_seg" movl 8(%4), %%eax\n" + "31: "__copyuser_seg" movl 12(%4),%%edx\n" " movl %%eax, 8(%3)\n" " movl %%edx, 12(%3)\n" - "4: movl 16(%4), %%eax\n" - "41: movl 20(%4), %%edx\n" + "4: "__copyuser_seg" movl 16(%4), %%eax\n" + "41: "__copyuser_seg" movl 20(%4), %%edx\n" " movl %%eax, 16(%3)\n" " movl %%edx, 20(%3)\n" - "10: movl 24(%4), %%eax\n" - "51: movl 28(%4), %%edx\n" + "10: "__copyuser_seg" movl 24(%4), %%eax\n" + "51: "__copyuser_seg" movl 28(%4), %%edx\n" " movl %%eax, 24(%3)\n" " movl %%edx, 28(%3)\n" - "11: movl 32(%4), %%eax\n" - "61: movl 36(%4), %%edx\n" + "11: "__copyuser_seg" movl 32(%4), %%eax\n" + "61: "__copyuser_seg" movl 36(%4), %%edx\n" " movl %%eax, 32(%3)\n" " movl %%edx, 36(%3)\n" - "12: movl 40(%4), %%eax\n" - "71: movl 44(%4), %%edx\n" + "12: "__copyuser_seg" movl 40(%4), %%eax\n" + "71: "__copyuser_seg" movl 44(%4), %%edx\n" " movl %%eax, 40(%3)\n" " movl %%edx, 44(%3)\n" - "13: movl 48(%4), %%eax\n" - "81: movl 52(%4), %%edx\n" + "13: "__copyuser_seg" movl 48(%4), %%eax\n" + "81: "__copyuser_seg" movl 52(%4), %%edx\n" " movl %%eax, 48(%3)\n" " movl %%edx, 52(%3)\n" - "14: movl 56(%4), %%eax\n" - "91: movl 60(%4), %%edx\n" + "14: "__copyuser_seg" movl 56(%4), %%eax\n" + "91: "__copyuser_seg" movl 60(%4), %%edx\n" " movl %%eax, 56(%3)\n" " movl %%edx, 60(%3)\n" " addl $-64, %0\n" @@ -385,9 +498,9 @@ __copy_user_zeroing_intel(void *to, cons " shrl $2, %0\n" " andl $3, %%eax\n" " cld\n" - "6: rep; movsl\n" + "6: rep; "__copyuser_seg" movsl\n" " movl %%eax,%0\n" - "7: rep; movsb\n" + "7: rep; "__copyuser_seg" movsb\n" "8:\n" ".section .fixup,\"ax\"\n" "9: lea 0(%%eax,%0,4),%0\n" @@ -440,41 +553,41 @@ static unsigned long __copy_user_zeroing __asm__ __volatile__( " .align 2,0x90\n" - "0: movl 32(%4), %%eax\n" + "0: "__copyuser_seg" movl 32(%4), %%eax\n" " cmpl $67, %0\n" " jbe 2f\n" - "1: movl 64(%4), %%eax\n" + "1: "__copyuser_seg" movl 64(%4), %%eax\n" " .align 2,0x90\n" - "2: movl 0(%4), %%eax\n" - "21: movl 4(%4), %%edx\n" + "2: "__copyuser_seg" movl 0(%4), %%eax\n" + "21: "__copyuser_seg" movl 4(%4), %%edx\n" " movnti %%eax, 0(%3)\n" " movnti %%edx, 4(%3)\n" - "3: movl 8(%4), %%eax\n" - "31: movl 12(%4),%%edx\n" + "3: "__copyuser_seg" movl 8(%4), %%eax\n" + "31: "__copyuser_seg" movl 12(%4),%%edx\n" " movnti %%eax, 8(%3)\n" " movnti %%edx, 12(%3)\n" - "4: movl 16(%4), %%eax\n" - "41: movl 20(%4), %%edx\n" + "4: "__copyuser_seg" movl 16(%4), %%eax\n" + "41: "__copyuser_seg" movl 20(%4), %%edx\n" " movnti %%eax, 16(%3)\n" " movnti %%edx, 20(%3)\n" - "10: movl 24(%4), %%eax\n" - "51: movl 28(%4), %%edx\n" + "10: "__copyuser_seg" movl 24(%4), %%eax\n" + "51: "__copyuser_seg" movl 28(%4), %%edx\n" " movnti %%eax, 24(%3)\n" " movnti %%edx, 28(%3)\n" - "11: movl 32(%4), %%eax\n" - "61: movl 36(%4), %%edx\n" + "11: "__copyuser_seg" movl 32(%4), %%eax\n" + "61: "__copyuser_seg" movl 36(%4), %%edx\n" " movnti %%eax, 32(%3)\n" " movnti %%edx, 36(%3)\n" - "12: movl 40(%4), %%eax\n" - "71: movl 44(%4), %%edx\n" + "12: "__copyuser_seg" movl 40(%4), %%eax\n" + "71: "__copyuser_seg" movl 44(%4), %%edx\n" " movnti %%eax, 40(%3)\n" " movnti %%edx, 44(%3)\n" - "13: movl 48(%4), %%eax\n" - "81: movl 52(%4), %%edx\n" + "13: "__copyuser_seg" movl 48(%4), %%eax\n" + "81: "__copyuser_seg" movl 52(%4), %%edx\n" " movnti %%eax, 48(%3)\n" " movnti %%edx, 52(%3)\n" - "14: movl 56(%4), %%eax\n" - "91: movl 60(%4), %%edx\n" + "14: "__copyuser_seg" movl 56(%4), %%eax\n" + "91: "__copyuser_seg" movl 60(%4), %%edx\n" " movnti %%eax, 56(%3)\n" " movnti %%edx, 60(%3)\n" " addl $-64, %0\n" @@ -487,9 +600,9 @@ static unsigned long __copy_user_zeroing " shrl $2, %0\n" " andl $3, %%eax\n" " cld\n" - "6: rep; movsl\n" + "6: rep; "__copyuser_seg" movsl\n" " movl %%eax,%0\n" - "7: rep; movsb\n" + "7: rep; "__copyuser_seg" movsb\n" "8:\n" ".section .fixup,\"ax\"\n" "9: lea 0(%%eax,%0,4),%0\n" @@ -537,41 +650,41 @@ static unsigned long __copy_user_intel_n __asm__ __volatile__( " .align 2,0x90\n" - "0: movl 32(%4), %%eax\n" + "0: "__copyuser_seg" movl 32(%4), %%eax\n" " cmpl $67, %0\n" " jbe 2f\n" - "1: movl 64(%4), %%eax\n" + "1: "__copyuser_seg" movl 64(%4), %%eax\n" " .align 2,0x90\n" - "2: movl 0(%4), %%eax\n" - "21: movl 4(%4), %%edx\n" + "2: "__copyuser_seg" movl 0(%4), %%eax\n" + "21: "__copyuser_seg" movl 4(%4), %%edx\n" " movnti %%eax, 0(%3)\n" " movnti %%edx, 4(%3)\n" - "3: movl 8(%4), %%eax\n" - "31: movl 12(%4),%%edx\n" + "3: "__copyuser_seg" movl 8(%4), %%eax\n" + "31: "__copyuser_seg" movl 12(%4),%%edx\n" " movnti %%eax, 8(%3)\n" " movnti %%edx, 12(%3)\n" - "4: movl 16(%4), %%eax\n" - "41: movl 20(%4), %%edx\n" + "4: "__copyuser_seg" movl 16(%4), %%eax\n" + "41: "__copyuser_seg" movl 20(%4), %%edx\n" " movnti %%eax, 16(%3)\n" " movnti %%edx, 20(%3)\n" - "10: movl 24(%4), %%eax\n" - "51: movl 28(%4), %%edx\n" + "10: "__copyuser_seg" movl 24(%4), %%eax\n" + "51: "__copyuser_seg" movl 28(%4), %%edx\n" " movnti %%eax, 24(%3)\n" " movnti %%edx, 28(%3)\n" - "11: movl 32(%4), %%eax\n" - "61: movl 36(%4), %%edx\n" + "11: "__copyuser_seg" movl 32(%4), %%eax\n" + "61: "__copyuser_seg" movl 36(%4), %%edx\n" " movnti %%eax, 32(%3)\n" " movnti %%edx, 36(%3)\n" - "12: movl 40(%4), %%eax\n" - "71: movl 44(%4), %%edx\n" + "12: "__copyuser_seg" movl 40(%4), %%eax\n" + "71: "__copyuser_seg" movl 44(%4), %%edx\n" " movnti %%eax, 40(%3)\n" " movnti %%edx, 44(%3)\n" - "13: movl 48(%4), %%eax\n" - "81: movl 52(%4), %%edx\n" + "13: "__copyuser_seg" movl 48(%4), %%eax\n" + "81: "__copyuser_seg" movl 52(%4), %%edx\n" " movnti %%eax, 48(%3)\n" " movnti %%edx, 52(%3)\n" - "14: movl 56(%4), %%eax\n" - "91: movl 60(%4), %%edx\n" + "14: "__copyuser_seg" movl 56(%4), %%eax\n" + "91: "__copyuser_seg" movl 60(%4), %%edx\n" " movnti %%eax, 56(%3)\n" " movnti %%edx, 60(%3)\n" " addl $-64, %0\n" @@ -584,9 +697,9 @@ static unsigned long __copy_user_intel_n " shrl $2, %0\n" " andl $3, %%eax\n" " cld\n" - "6: rep; movsl\n" + "6: rep; "__copyuser_seg" movsl\n" " movl %%eax,%0\n" - "7: rep; movsb\n" + "7: rep; "__copyuser_seg" movsb\n" "8:\n" ".section .fixup,\"ax\"\n" "9: lea 0(%%eax,%0,4),%0\n" @@ -629,32 +742,36 @@ static unsigned long __copy_user_intel_n */ unsigned long __copy_user_zeroing_intel(void *to, const void __user *from, unsigned long size); -unsigned long __copy_user_intel(void __user *to, const void *from, +unsigned long __generic_copy_to_user_intel(void __user *to, const void *from, + unsigned long size); +unsigned long __generic_copy_from_user_intel(void *to, const void __user *from, unsigned long size); unsigned long __copy_user_zeroing_intel_nocache(void *to, const void __user *from, unsigned long size); #endif /* CONFIG_X86_INTEL_USERCOPY */ /* Generic arbitrary sized copy. */ -#define __copy_user(to, from, size) \ +#define __copy_user(to, from, size, prefix, set, restore) \ do { \ int __d0, __d1, __d2; \ __asm__ __volatile__( \ + set \ " cmp $7,%0\n" \ " jbe 1f\n" \ " movl %1,%0\n" \ " negl %0\n" \ " andl $7,%0\n" \ " subl %0,%3\n" \ - "4: rep; movsb\n" \ + "4: rep; "prefix"movsb\n" \ " movl %3,%0\n" \ " shrl $2,%0\n" \ " andl $3,%3\n" \ " .align 2,0x90\n" \ - "0: rep; movsl\n" \ + "0: rep; "prefix"movsl\n" \ " movl %3,%0\n" \ - "1: rep; movsb\n" \ + "1: rep; "prefix"movsb\n" \ "2:\n" \ + restore \ ".section .fixup,\"ax\"\n" \ "5: addl %3,%0\n" \ " jmp 2b\n" \ @@ -682,14 +799,14 @@ do { \ " negl %0\n" \ " andl $7,%0\n" \ " subl %0,%3\n" \ - "4: rep; movsb\n" \ + "4: rep; "__copyuser_seg"movsb\n" \ " movl %3,%0\n" \ " shrl $2,%0\n" \ " andl $3,%3\n" \ " .align 2,0x90\n" \ - "0: rep; movsl\n" \ + "0: rep; "__copyuser_seg"movsl\n" \ " movl %3,%0\n" \ - "1: rep; movsb\n" \ + "1: rep; "__copyuser_seg"movsb\n" \ "2:\n" \ ".section .fixup,\"ax\"\n" \ "5: addl %3,%0\n" \ @@ -775,9 +892,9 @@ survive: } #endif if (movsl_is_ok(to, from, n)) - __copy_user(to, from, n); + __copy_user(to, from, n, "", __COPYUSER_SET_ES, __COPYUSER_RESTORE_ES); else - n = __copy_user_intel(to, from, n); + n = __generic_copy_to_user_intel(to, from, n); return n; } EXPORT_SYMBOL(__copy_to_user_ll); @@ -797,10 +914,9 @@ unsigned long __copy_from_user_ll_nozero unsigned long n) { if (movsl_is_ok(to, from, n)) - __copy_user(to, from, n); + __copy_user(to, from, n, __copyuser_seg, "", ""); else - n = __copy_user_intel((void __user *)to, - (const void *)from, n); + n = __generic_copy_from_user_intel(to, from, n); return n; } EXPORT_SYMBOL(__copy_from_user_ll_nozero); @@ -827,65 +943,49 @@ unsigned long __copy_from_user_ll_nocach if (n > 64 && cpu_has_xmm2) n = __copy_user_intel_nocache(to, from, n); else - __copy_user(to, from, n); + __copy_user(to, from, n, __copyuser_seg, "", ""); #else - __copy_user(to, from, n); + __copy_user(to, from, n, __copyuser_seg, "", ""); #endif return n; } EXPORT_SYMBOL(__copy_from_user_ll_nocache_nozero); -/** - * copy_to_user: - Copy a block of data into user space. - * @to: Destination address, in user space. - * @from: Source address, in kernel space. - * @n: Number of bytes to copy. - * - * Context: User context only. This function may sleep. - * - * Copy data from kernel space to user space. - * - * Returns number of bytes that could not be copied. - * On success, this will be zero. - */ -unsigned long -copy_to_user(void __user *to, const void *from, unsigned long n) +void copy_from_user_overflow(void) { - if (access_ok(VERIFY_WRITE, to, n)) - n = __copy_to_user(to, from, n); - return n; + WARN(1, "Buffer overflow detected!\n"); } -EXPORT_SYMBOL(copy_to_user); +EXPORT_SYMBOL(copy_from_user_overflow); -/** - * copy_from_user: - Copy a block of data from user space. - * @to: Destination address, in kernel space. - * @from: Source address, in user space. - * @n: Number of bytes to copy. - * - * Context: User context only. This function may sleep. - * - * Copy data from user space to kernel space. - * - * Returns number of bytes that could not be copied. - * On success, this will be zero. - * - * If some data could not be copied, this function will pad the copied - * data to the requested size using zero bytes. - */ -unsigned long -_copy_from_user(void *to, const void __user *from, unsigned long n) +void copy_to_user_overflow(void) { - if (access_ok(VERIFY_READ, from, n)) - n = __copy_from_user(to, from, n); - else - memset(to, 0, n); - return n; + WARN(1, "Buffer overflow detected!\n"); } -EXPORT_SYMBOL(_copy_from_user); +EXPORT_SYMBOL(copy_to_user_overflow); -void copy_from_user_overflow(void) +#ifdef CONFIG_PAX_MEMORY_UDEREF +void __set_fs(mm_segment_t x) { - WARN(1, "Buffer overflow detected!\n"); + switch (x.seg) { + case 0: + loadsegment(gs, 0); + break; + case TASK_SIZE_MAX: + loadsegment(gs, __USER_DS); + break; + case -1UL: + loadsegment(gs, __KERNEL_DS); + break; + default: + BUG(); + } + return; } -EXPORT_SYMBOL(copy_from_user_overflow); + +void set_fs(mm_segment_t x) +{ + current_thread_info()->addr_limit = x; + __set_fs(x); +} +EXPORT_SYMBOL(set_fs); +#endif diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/lib/usercopy_64.c linux-2.6.36.4-pax/arch/x86/lib/usercopy_64.c --- linux-2.6.36.4/arch/x86/lib/usercopy_64.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/lib/usercopy_64.c 2010-10-27 22:58:07.000000000 +0200 @@ -42,6 +42,8 @@ long __strncpy_from_user(char *dst, const char __user *src, long count) { long res; + if ((unsigned long)src < PAX_USER_SHADOW_BASE) + src += PAX_USER_SHADOW_BASE; __do_strncpy_from_user(dst, src, count, res); return res; } @@ -65,6 +67,8 @@ unsigned long __clear_user(void __user * { long __d0; might_fault(); + if ((unsigned long)addr < PAX_USER_SHADOW_BASE) + addr += PAX_USER_SHADOW_BASE; /* no memory constraint because it doesn't change any memory gcc knows about */ asm volatile( @@ -151,10 +155,14 @@ EXPORT_SYMBOL(strlen_user); unsigned long copy_in_user(void __user *to, const void __user *from, unsigned len) { - if (access_ok(VERIFY_WRITE, to, len) && access_ok(VERIFY_READ, from, len)) { + if (access_ok(VERIFY_WRITE, to, len) && access_ok(VERIFY_READ, from, len)) { + if ((unsigned long)to < PAX_USER_SHADOW_BASE) + to += PAX_USER_SHADOW_BASE; + if ((unsigned long)from < PAX_USER_SHADOW_BASE) + from += PAX_USER_SHADOW_BASE; return copy_user_generic((__force void *)to, (__force void *)from, len); - } - return len; + } + return len; } EXPORT_SYMBOL(copy_in_user); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/mm/extable.c linux-2.6.36.4-pax/arch/x86/mm/extable.c --- linux-2.6.36.4/arch/x86/mm/extable.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/mm/extable.c 2010-10-27 22:58:07.000000000 +0200 @@ -1,14 +1,71 @@ #include #include +#include #include +#include +/* + * The exception table needs to be sorted so that the binary + * search that we use to find entries in it works properly. + * This is used both for the kernel exception table and for + * the exception tables of modules that get loaded. + */ +static int cmp_ex(const void *a, const void *b) +{ + const struct exception_table_entry *x = a, *y = b; + + /* avoid overflow */ + if (x->insn > y->insn) + return 1; + if (x->insn < y->insn) + return -1; + return 0; +} + +static void swap_ex(void *a, void *b, int size) +{ + struct exception_table_entry t, *x = a, *y = b; + + t = *x; + + pax_open_kernel(); + *x = *y; + *y = t; + pax_close_kernel(); +} + +void sort_extable(struct exception_table_entry *start, + struct exception_table_entry *finish) +{ + sort(start, finish - start, sizeof(struct exception_table_entry), + cmp_ex, swap_ex); +} + +#ifdef CONFIG_MODULES +/* + * If the exception table is sorted, any referring to the module init + * will be at the beginning or the end. + */ +void trim_init_extable(struct module *m) +{ + /*trim the beginning*/ + while (m->num_exentries && within_module_init(m->extable[0].insn, m)) { + m->extable++; + m->num_exentries--; + } + /*trim the end*/ + while (m->num_exentries && + within_module_init(m->extable[m->num_exentries-1].insn, m)) + m->num_exentries--; +} +#endif /* CONFIG_MODULES */ int fixup_exception(struct pt_regs *regs) { const struct exception_table_entry *fixup; #ifdef CONFIG_PNPBIOS - if (unlikely(SEGMENT_IS_PNP_CODE(regs->cs))) { + if (unlikely(!v8086_mode(regs) && SEGMENT_IS_PNP_CODE(regs->cs))) { extern u32 pnp_bios_fault_eip, pnp_bios_fault_esp; extern u32 pnp_bios_is_utter_crap; pnp_bios_is_utter_crap = 1; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/mm/fault.c linux-2.6.36.4-pax/arch/x86/mm/fault.c --- linux-2.6.36.4/arch/x86/mm/fault.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/mm/fault.c 2011-03-07 20:19:42.000000000 +0100 @@ -11,10 +11,18 @@ #include /* __kprobes, ... */ #include /* kmmio_handler, ... */ #include /* perf_sw_event */ +#include +#include #include /* dotraplinkage, ... */ #include /* pgd_*(), ... */ #include /* kmemcheck_*(), ... */ +#include +#include + +#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF) +#include +#endif /* * Page fault error code bits: @@ -52,7 +60,7 @@ static inline int __kprobes notify_page_ int ret = 0; /* kprobe_running() needs smp_processor_id() */ - if (kprobes_built_in() && !user_mode_vm(regs)) { + if (kprobes_built_in() && !user_mode(regs)) { preempt_disable(); if (kprobe_running() && kprobe_fault_handler(regs, 14)) ret = 1; @@ -113,7 +121,10 @@ check_prefetch_opcode(struct pt_regs *re return !instr_lo || (instr_lo>>1) == 1; case 0x00: /* Prefetch instruction is 0x0F0D or 0x0F18 */ - if (probe_kernel_address(instr, opcode)) + if (user_mode(regs)) { + if (__copy_from_user_inatomic(&opcode, (__force unsigned char __user *)(instr), 1)) + return 0; + } else if (probe_kernel_address(instr, opcode)) return 0; *prefetch = (instr_lo == 0xF) && @@ -147,7 +158,10 @@ is_prefetch(struct pt_regs *regs, unsign while (instr < max_instr) { unsigned char opcode; - if (probe_kernel_address(instr, opcode)) + if (user_mode(regs)) { + if (__copy_from_user_inatomic(&opcode, (__force unsigned char __user *)(instr), 1)) + break; + } else if (probe_kernel_address(instr, opcode)) break; instr++; @@ -173,6 +187,30 @@ force_sig_info_fault(int si_signo, int s force_sig_info(si_signo, &info, tsk); } +#ifdef CONFIG_PAX_EMUTRAMP +static int pax_handle_fetch_fault(struct pt_regs *regs); +#endif + +#ifdef CONFIG_PAX_PAGEEXEC +static inline pmd_t * pax_get_pmd(struct mm_struct *mm, unsigned long address) +{ + pgd_t *pgd; + pud_t *pud; + pmd_t *pmd; + + pgd = pgd_offset(mm, address); + if (!pgd_present(*pgd)) + return NULL; + pud = pud_offset(pgd, address); + if (!pud_present(*pud)) + return NULL; + pmd = pmd_offset(pud, address); + if (!pmd_present(*pmd)) + return NULL; + return pmd; +} +#endif + DEFINE_SPINLOCK(pgd_lock); LIST_HEAD(pgd_list); @@ -225,11 +263,24 @@ void vmalloc_sync_all(void) address += PMD_SIZE) { unsigned long flags; + +#ifdef CONFIG_PAX_PER_CPU_PGD + unsigned long cpu; +#else struct page *page; +#endif spin_lock_irqsave(&pgd_lock, flags); + +#ifdef CONFIG_PAX_PER_CPU_PGD + for (cpu = 0; cpu < NR_CPUS; ++cpu) { + pgd_t *pgd = get_cpu_pgd(cpu); +#else list_for_each_entry(page, &pgd_list, lru) { - if (!vmalloc_sync_one(page_address(page), address)) + pgd_t *pgd = page_address(page); +#endif + + if (!vmalloc_sync_one(pgd, address)) break; } spin_unlock_irqrestore(&pgd_lock, flags); @@ -259,6 +310,11 @@ static noinline __kprobes int vmalloc_fa * an interrupt in the middle of a task switch.. */ pgd_paddr = read_cr3(); + +#ifdef CONFIG_PAX_PER_CPU_PGD + BUG_ON(__pa(get_cpu_pgd(smp_processor_id())) != (pgd_paddr & PHYSICAL_PAGE_MASK)); +#endif + pmd_k = vmalloc_sync_one(__va(pgd_paddr), address); if (!pmd_k) return -1; @@ -333,15 +389,27 @@ void vmalloc_sync_all(void) const pgd_t *pgd_ref = pgd_offset_k(address); unsigned long flags; + +#ifdef CONFIG_PAX_PER_CPU_PGD + unsigned long cpu; +#else struct page *page; +#endif if (pgd_none(*pgd_ref)) continue; spin_lock_irqsave(&pgd_lock, flags); + +#ifdef CONFIG_PAX_PER_CPU_PGD + for (cpu = 0; cpu < NR_CPUS; ++cpu) { + pgd_t *pgd = pgd_offset_cpu(cpu, address); +#else list_for_each_entry(page, &pgd_list, lru) { pgd_t *pgd; pgd = (pgd_t *)page_address(page) + pgd_index(address); +#endif + if (pgd_none(*pgd)) set_pgd(pgd, *pgd_ref); else @@ -374,7 +442,14 @@ static noinline __kprobes int vmalloc_fa * happen within a race in page table update. In the later * case just flush: */ + +#ifdef CONFIG_PAX_PER_CPU_PGD + BUG_ON(__pa(get_cpu_pgd(smp_processor_id())) != (read_cr3() & PHYSICAL_PAGE_MASK)); + pgd = pgd_offset_cpu(smp_processor_id(), address); +#else pgd = pgd_offset(current->active_mm, address); +#endif + pgd_ref = pgd_offset_k(address); if (pgd_none(*pgd_ref)) return -1; @@ -536,7 +611,7 @@ static int is_errata93(struct pt_regs *r static int is_errata100(struct pt_regs *regs, unsigned long address) { #ifdef CONFIG_X86_64 - if ((regs->cs == __USER32_CS || (regs->cs & (1<<2))) && (address >> 32)) + if ((regs->cs == __USER32_CS || (regs->cs & SEGMENT_LDT)) && (address >> 32)) return 1; #endif return 0; @@ -563,7 +638,7 @@ static int is_f00f_bug(struct pt_regs *r } static const char nx_warning[] = KERN_CRIT -"kernel tried to execute NX-protected page - exploit attempt? (uid: %d)\n"; +"kernel tried to execute NX-protected page - exploit attempt? (uid: %d, task: %s, pid: %d)\n"; static void show_fault_oops(struct pt_regs *regs, unsigned long error_code, @@ -572,15 +647,21 @@ show_fault_oops(struct pt_regs *regs, un if (!oops_may_print()) return; - if (error_code & PF_INSTR) { + if ((__supported_pte_mask & _PAGE_NX) && (error_code & PF_INSTR)) { unsigned int level; pte_t *pte = lookup_address(address, &level); if (pte && pte_present(*pte) && !pte_exec(*pte)) - printk(nx_warning, current_uid()); + printk(nx_warning, current_uid(), current->comm, task_pid_nr(current)); } +#ifdef CONFIG_PAX_KERNEXEC + if (init_mm.start_code <= address && address < init_mm.end_code) + printk(KERN_ERR "PAX: %s:%d, uid/euid: %u/%u, attempted to modify kernel code\n", + current->comm, task_pid_nr(current), current_uid(), current_euid()); +#endif + printk(KERN_ALERT "BUG: unable to handle kernel "); if (address < PAGE_SIZE) printk(KERN_CONT "NULL pointer dereference"); @@ -705,6 +786,68 @@ __bad_area_nosemaphore(struct pt_regs *r unsigned long address, int si_code) { struct task_struct *tsk = current; + struct mm_struct *mm = tsk->mm; + +#ifdef CONFIG_X86_64 + if (mm && (error_code & PF_INSTR) && mm->context.vdso) { + if (regs->ip == (unsigned long)vgettimeofday) { + regs->ip = (unsigned long)VDSO64_SYMBOL(mm->context.vdso, fallback_gettimeofday); + return; + } else if (regs->ip == (unsigned long)vtime) { + regs->ip = (unsigned long)VDSO64_SYMBOL(mm->context.vdso, fallback_time); + return; + } else if (regs->ip == (unsigned long)vgetcpu) { + regs->ip = (unsigned long)VDSO64_SYMBOL(mm->context.vdso, getcpu); + return; + } + } +#endif + +#if defined(CONFIG_PAX_PAGEEXEC) || defined(CONFIG_PAX_SEGMEXEC) + if (mm && (error_code & PF_USER)) { + unsigned long ip = regs->ip; + + if (v8086_mode(regs)) + ip = ((regs->cs & 0xffff) << 4) + (ip & 0xffff); + + /* + * It's possible to have interrupts off here: + */ + local_irq_enable(); + +#ifdef CONFIG_PAX_PAGEEXEC + if ((mm->pax_flags & MF_PAX_PAGEEXEC) && + (((__supported_pte_mask & _PAGE_NX) && (error_code & PF_INSTR)) || (!(error_code & (PF_PROT | PF_WRITE)) && ip == address))) { + +#ifdef CONFIG_PAX_EMUTRAMP + switch (pax_handle_fetch_fault(regs)) { + case 2: + return; + } +#endif + + pax_report_fault(regs, (void *)ip, (void *)regs->sp); + do_group_exit(SIGKILL); + } +#endif + +#ifdef CONFIG_PAX_SEGMEXEC + if ((mm->pax_flags & MF_PAX_SEGMEXEC) && !(error_code & (PF_PROT | PF_WRITE)) && (ip + SEGMEXEC_TASK_SIZE == address)) { + +#ifdef CONFIG_PAX_EMUTRAMP + switch (pax_handle_fetch_fault(regs)) { + case 2: + return; + } +#endif + + pax_report_fault(regs, (void *)ip, (void *)regs->sp); + do_group_exit(SIGKILL); + } +#endif + + } +#endif /* User mode accesses just cause a SIGSEGV */ if (error_code & PF_USER) { @@ -851,6 +994,99 @@ static int spurious_fault_check(unsigned return 1; } +#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_PAGEEXEC) +static int pax_handle_pageexec_fault(struct pt_regs *regs, struct mm_struct *mm, unsigned long address, unsigned long error_code) +{ + pte_t *pte; + pmd_t *pmd; + spinlock_t *ptl; + unsigned char pte_mask; + + if ((__supported_pte_mask & _PAGE_NX) || (error_code & (PF_PROT|PF_USER)) != (PF_PROT|PF_USER) || v8086_mode(regs) || + !(mm->pax_flags & MF_PAX_PAGEEXEC)) + return 0; + + /* PaX: it's our fault, let's handle it if we can */ + + /* PaX: take a look at read faults before acquiring any locks */ + if (unlikely(!(error_code & PF_WRITE) && (regs->ip == address))) { + /* instruction fetch attempt from a protected page in user mode */ + up_read(&mm->mmap_sem); + +#ifdef CONFIG_PAX_EMUTRAMP + switch (pax_handle_fetch_fault(regs)) { + case 2: + return 1; + } +#endif + + pax_report_fault(regs, (void *)regs->ip, (void *)regs->sp); + do_group_exit(SIGKILL); + } + + pmd = pax_get_pmd(mm, address); + if (unlikely(!pmd)) + return 0; + + pte = pte_offset_map_lock(mm, pmd, address, &ptl); + if (unlikely(!(pte_val(*pte) & _PAGE_PRESENT) || pte_user(*pte))) { + pte_unmap_unlock(pte, ptl); + return 0; + } + + if (unlikely((error_code & PF_WRITE) && !pte_write(*pte))) { + /* write attempt to a protected page in user mode */ + pte_unmap_unlock(pte, ptl); + return 0; + } + +#ifdef CONFIG_SMP + if (likely(address > get_limit(regs->cs) && cpu_isset(smp_processor_id(), mm->context.cpu_user_cs_mask))) +#else + if (likely(address > get_limit(regs->cs))) +#endif + { + set_pte(pte, pte_mkread(*pte)); + __flush_tlb_one(address); + pte_unmap_unlock(pte, ptl); + up_read(&mm->mmap_sem); + return 1; + } + + pte_mask = _PAGE_ACCESSED | _PAGE_USER | ((error_code & PF_WRITE) << (_PAGE_BIT_DIRTY-1)); + + /* + * PaX: fill DTLB with user rights and retry + */ + __asm__ __volatile__ ( + "orb %2,(%1)\n" +#if defined(CONFIG_M586) || defined(CONFIG_M586TSC) +/* + * PaX: let this uncommented 'invlpg' remind us on the behaviour of Intel's + * (and AMD's) TLBs. namely, they do not cache PTEs that would raise *any* + * page fault when examined during a TLB load attempt. this is true not only + * for PTEs holding a non-present entry but also present entries that will + * raise a page fault (such as those set up by PaX, or the copy-on-write + * mechanism). in effect it means that we do *not* need to flush the TLBs + * for our target pages since their PTEs are simply not in the TLBs at all. + + * the best thing in omitting it is that we gain around 15-20% speed in the + * fast path of the page fault handler and can get rid of tracing since we + * can no longer flush unintended entries. + */ + "invlpg (%0)\n" +#endif + __copyuser_seg"testb $0,(%0)\n" + "xorb %3,(%1)\n" + : + : "r" (address), "r" (pte), "q" (pte_mask), "i" (_PAGE_USER) + : "memory", "cc"); + pte_unmap_unlock(pte, ptl); + up_read(&mm->mmap_sem); + return 1; +} +#endif + /* * Handle a spurious fault caused by a stale TLB entry. * @@ -917,6 +1153,9 @@ int show_unhandled_signals = 1; static inline int access_error(unsigned long error_code, int write, struct vm_area_struct *vma) { + if ((__supported_pte_mask & _PAGE_NX) && (error_code & PF_INSTR) && !(vma->vm_flags & VM_EXEC)) + return 1; + if (write) { /* write, present and write, not present: */ if (unlikely(!(vma->vm_flags & VM_WRITE))) @@ -950,17 +1189,31 @@ do_page_fault(struct pt_regs *regs, unsi { struct vm_area_struct *vma; struct task_struct *tsk; - unsigned long address; struct mm_struct *mm; int write; int fault; + /* Get the faulting address: */ + unsigned long address = read_cr2(); + +#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF) + if (!user_mode(regs) && address < 2 * PAX_USER_SHADOW_BASE) { + if (!search_exception_tables(regs->ip)) { + bad_area_nosemaphore(regs, error_code, address); + return; + } + if (address < PAX_USER_SHADOW_BASE) { + printk(KERN_ERR "PAX: please report this to pageexec@freemail.hu\n"); + printk(KERN_ERR "PAX: faulting IP: %pS\n", (void *)regs->ip); + show_trace_log_lvl(NULL, NULL, (void *)regs->sp, regs->bp, KERN_ERR); + } else + address -= PAX_USER_SHADOW_BASE; + } +#endif + tsk = current; mm = tsk->mm; - /* Get the faulting address: */ - address = read_cr2(); - /* * Detect and handle instructions that would cause a page fault for * both a tracked kernel page and a userspace page. @@ -1020,7 +1273,7 @@ do_page_fault(struct pt_regs *regs, unsi * User-mode registers count as a user access even for any * potential system fault or CPU buglet: */ - if (user_mode_vm(regs)) { + if (user_mode(regs)) { local_irq_enable(); error_code |= PF_USER; } else { @@ -1074,6 +1327,11 @@ do_page_fault(struct pt_regs *regs, unsi might_sleep(); } +#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_PAGEEXEC) + if (pax_handle_pageexec_fault(regs, mm, address, error_code)) + return; +#endif + vma = find_vma(mm, address); if (unlikely(!vma)) { bad_area(regs, error_code, address); @@ -1085,18 +1343,24 @@ do_page_fault(struct pt_regs *regs, unsi bad_area(regs, error_code, address); return; } - if (error_code & PF_USER) { - /* - * Accessing the stack below %sp is always a bug. - * The large cushion allows instructions like enter - * and pusha to work. ("enter $65535, $31" pushes - * 32 pointers and then decrements %sp by 65535.) - */ - if (unlikely(address + 65536 + 32 * sizeof(unsigned long) < regs->sp)) { - bad_area(regs, error_code, address); - return; - } + /* + * Accessing the stack below %sp is always a bug. + * The large cushion allows instructions like enter + * and pusha to work. ("enter $65535, $31" pushes + * 32 pointers and then decrements %sp by 65535.) + */ + if (unlikely(address + 65536 + 32 * sizeof(unsigned long) < task_pt_regs(tsk)->sp)) { + bad_area(regs, error_code, address); + return; } + +#ifdef CONFIG_PAX_SEGMEXEC + if (unlikely((mm->pax_flags & MF_PAX_SEGMEXEC) && vma->vm_end - SEGMEXEC_TASK_SIZE - 1 < address - SEGMEXEC_TASK_SIZE - 1)) { + bad_area(regs, error_code, address); + return; + } +#endif + if (unlikely(expand_stack(vma, address))) { bad_area(regs, error_code, address); return; @@ -1140,3 +1404,199 @@ good_area: up_read(&mm->mmap_sem); } + +#ifdef CONFIG_PAX_EMUTRAMP +static int pax_handle_fetch_fault_32(struct pt_regs *regs) +{ + int err; + + do { /* PaX: gcc trampoline emulation #1 */ + unsigned char mov1, mov2; + unsigned short jmp; + unsigned int addr1, addr2; + +#ifdef CONFIG_X86_64 + if ((regs->ip + 11) >> 32) + break; +#endif + + err = get_user(mov1, (unsigned char __user *)regs->ip); + err |= get_user(addr1, (unsigned int __user *)(regs->ip + 1)); + err |= get_user(mov2, (unsigned char __user *)(regs->ip + 5)); + err |= get_user(addr2, (unsigned int __user *)(regs->ip + 6)); + err |= get_user(jmp, (unsigned short __user *)(regs->ip + 10)); + + if (err) + break; + + if (mov1 == 0xB9 && mov2 == 0xB8 && jmp == 0xE0FF) { + regs->cx = addr1; + regs->ax = addr2; + regs->ip = addr2; + return 2; + } + } while (0); + + do { /* PaX: gcc trampoline emulation #2 */ + unsigned char mov, jmp; + unsigned int addr1, addr2; + +#ifdef CONFIG_X86_64 + if ((regs->ip + 9) >> 32) + break; +#endif + + err = get_user(mov, (unsigned char __user *)regs->ip); + err |= get_user(addr1, (unsigned int __user *)(regs->ip + 1)); + err |= get_user(jmp, (unsigned char __user *)(regs->ip + 5)); + err |= get_user(addr2, (unsigned int __user *)(regs->ip + 6)); + + if (err) + break; + + if (mov == 0xB9 && jmp == 0xE9) { + regs->cx = addr1; + regs->ip = (unsigned int)(regs->ip + addr2 + 10); + return 2; + } + } while (0); + + return 1; /* PaX in action */ +} + +#ifdef CONFIG_X86_64 +static int pax_handle_fetch_fault_64(struct pt_regs *regs) +{ + int err; + + do { /* PaX: gcc trampoline emulation #1 */ + unsigned short mov1, mov2, jmp1; + unsigned char jmp2; + unsigned int addr1; + unsigned long addr2; + + err = get_user(mov1, (unsigned short __user *)regs->ip); + err |= get_user(addr1, (unsigned int __user *)(regs->ip + 2)); + err |= get_user(mov2, (unsigned short __user *)(regs->ip + 6)); + err |= get_user(addr2, (unsigned long __user *)(regs->ip + 8)); + err |= get_user(jmp1, (unsigned short __user *)(regs->ip + 16)); + err |= get_user(jmp2, (unsigned char __user *)(regs->ip + 18)); + + if (err) + break; + + if (mov1 == 0xBB41 && mov2 == 0xBA49 && jmp1 == 0xFF49 && jmp2 == 0xE3) { + regs->r11 = addr1; + regs->r10 = addr2; + regs->ip = addr1; + return 2; + } + } while (0); + + do { /* PaX: gcc trampoline emulation #2 */ + unsigned short mov1, mov2, jmp1; + unsigned char jmp2; + unsigned long addr1, addr2; + + err = get_user(mov1, (unsigned short __user *)regs->ip); + err |= get_user(addr1, (unsigned long __user *)(regs->ip + 2)); + err |= get_user(mov2, (unsigned short __user *)(regs->ip + 10)); + err |= get_user(addr2, (unsigned long __user *)(regs->ip + 12)); + err |= get_user(jmp1, (unsigned short __user *)(regs->ip + 20)); + err |= get_user(jmp2, (unsigned char __user *)(regs->ip + 22)); + + if (err) + break; + + if (mov1 == 0xBB49 && mov2 == 0xBA49 && jmp1 == 0xFF49 && jmp2 == 0xE3) { + regs->r11 = addr1; + regs->r10 = addr2; + regs->ip = addr1; + return 2; + } + } while (0); + + return 1; /* PaX in action */ +} +#endif + +/* + * PaX: decide what to do with offenders (regs->ip = fault address) + * + * returns 1 when task should be killed + * 2 when gcc trampoline was detected + */ +static int pax_handle_fetch_fault(struct pt_regs *regs) +{ + if (v8086_mode(regs)) + return 1; + + if (!(current->mm->pax_flags & MF_PAX_EMUTRAMP)) + return 1; + +#ifdef CONFIG_X86_32 + return pax_handle_fetch_fault_32(regs); +#else + if (regs->cs == __USER32_CS || (regs->cs & SEGMENT_LDT)) + return pax_handle_fetch_fault_32(regs); + else + return pax_handle_fetch_fault_64(regs); +#endif +} +#endif + +#if defined(CONFIG_PAX_PAGEEXEC) || defined(CONFIG_PAX_SEGMEXEC) +void pax_report_insns(void *pc, void *sp) +{ + long i; + + printk(KERN_ERR "PAX: bytes at PC: "); + for (i = 0; i < 20; i++) { + unsigned char c; + if (get_user(c, (__force unsigned char __user *)pc+i)) + printk(KERN_CONT "?? "); + else + printk(KERN_CONT "%02x ", c); + } + printk("\n"); + + printk(KERN_ERR "PAX: bytes at SP-%lu: ", (unsigned long)sizeof(long)); + for (i = -1; i < 80 / (long)sizeof(long); i++) { + unsigned long c; + if (get_user(c, (__force unsigned long __user *)sp+i)) +#ifdef CONFIG_X86_32 + printk(KERN_CONT "???????? "); +#else + printk(KERN_CONT "???????????????? "); +#endif + else + printk(KERN_CONT "%0*lx ", 2 * (int)sizeof(long), c); + } + printk("\n"); +} +#endif + +/** + * probe_kernel_write(): safely attempt to write to a location + * @dst: address to write to + * @src: pointer to the data that shall be written + * @size: size of the data chunk + * + * Safely write to address @dst from the buffer at @src. If a kernel fault + * happens, handle that and return -EFAULT. + */ +long notrace probe_kernel_write(void *dst, const void *src, size_t size) +{ + long ret; + mm_segment_t old_fs = get_fs(); + + set_fs(KERNEL_DS); + pagefault_disable(); + pax_open_kernel(); + ret = __copy_to_user_inatomic((__force void __user *)dst, src, size); + pax_close_kernel(); + pagefault_enable(); + set_fs(old_fs); + + return ret ? -EFAULT : 0; +} diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/mm/gup.c linux-2.6.36.4-pax/arch/x86/mm/gup.c --- linux-2.6.36.4/arch/x86/mm/gup.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/mm/gup.c 2010-10-27 22:58:07.000000000 +0200 @@ -237,7 +237,7 @@ int __get_user_pages_fast(unsigned long addr = start; len = (unsigned long) nr_pages << PAGE_SHIFT; end = start + len; - if (unlikely(!access_ok(write ? VERIFY_WRITE : VERIFY_READ, + if (unlikely(!__access_ok(write ? VERIFY_WRITE : VERIFY_READ, (void __user *)start, len))) return 0; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/mm/highmem_32.c linux-2.6.36.4-pax/arch/x86/mm/highmem_32.c --- linux-2.6.36.4/arch/x86/mm/highmem_32.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/mm/highmem_32.c 2010-10-27 22:58:07.000000000 +0200 @@ -43,7 +43,10 @@ void *kmap_atomic_prot(struct page *page idx = type + KM_TYPE_NR*smp_processor_id(); vaddr = __fix_to_virt(FIX_KMAP_BEGIN + idx); BUG_ON(!pte_none(*(kmap_pte-idx))); + + pax_open_kernel(); set_pte(kmap_pte-idx, mk_pte(page, prot)); + pax_close_kernel(); return (void *)vaddr; } diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/mm/hugetlbpage.c linux-2.6.36.4-pax/arch/x86/mm/hugetlbpage.c --- linux-2.6.36.4/arch/x86/mm/hugetlbpage.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/mm/hugetlbpage.c 2010-10-27 22:58:07.000000000 +0200 @@ -266,13 +266,20 @@ static unsigned long hugetlb_get_unmappe struct hstate *h = hstate_file(file); struct mm_struct *mm = current->mm; struct vm_area_struct *vma; - unsigned long start_addr; + unsigned long start_addr, pax_task_size = TASK_SIZE; + +#ifdef CONFIG_PAX_SEGMEXEC + if (mm->pax_flags & MF_PAX_SEGMEXEC) + pax_task_size = SEGMEXEC_TASK_SIZE; +#endif + + pax_task_size -= PAGE_SIZE; if (len > mm->cached_hole_size) { - start_addr = mm->free_area_cache; + start_addr = mm->free_area_cache; } else { - start_addr = TASK_UNMAPPED_BASE; - mm->cached_hole_size = 0; + start_addr = mm->mmap_base; + mm->cached_hole_size = 0; } full_search: @@ -280,26 +287,27 @@ full_search: for (vma = find_vma(mm, addr); ; vma = vma->vm_next) { /* At this point: (!vma || addr < vma->vm_end). */ - if (TASK_SIZE - len < addr) { + if (pax_task_size - len < addr) { /* * Start a new search - just in case we missed * some holes. */ - if (start_addr != TASK_UNMAPPED_BASE) { - start_addr = TASK_UNMAPPED_BASE; + if (start_addr != mm->mmap_base) { + start_addr = mm->mmap_base; mm->cached_hole_size = 0; goto full_search; } return -ENOMEM; } - if (!vma || addr + len <= vma->vm_start) { - mm->free_area_cache = addr + len; - return addr; - } + if (check_heap_stack_gap(vma, addr, len)) + break; if (addr + mm->cached_hole_size < vma->vm_start) mm->cached_hole_size = vma->vm_start - addr; addr = ALIGN(vma->vm_end, huge_page_size(h)); } + + mm->free_area_cache = addr + len; + return addr; } static unsigned long hugetlb_get_unmapped_area_topdown(struct file *file, @@ -308,10 +316,9 @@ static unsigned long hugetlb_get_unmappe { struct hstate *h = hstate_file(file); struct mm_struct *mm = current->mm; - struct vm_area_struct *vma, *prev_vma; - unsigned long base = mm->mmap_base, addr = addr0; + struct vm_area_struct *vma; + unsigned long base = mm->mmap_base, addr; unsigned long largest_hole = mm->cached_hole_size; - int first_time = 1; /* don't allow allocations above current base */ if (mm->free_area_cache > base) @@ -321,7 +328,7 @@ static unsigned long hugetlb_get_unmappe largest_hole = 0; mm->free_area_cache = base; } -try_again: + /* make sure it can fit in the remaining address space */ if (mm->free_area_cache < len) goto fail; @@ -329,33 +336,27 @@ try_again: /* either no address requested or cant fit in requested address hole */ addr = (mm->free_area_cache - len) & huge_page_mask(h); do { + vma = find_vma(mm, addr); /* * Lookup failure means no vma is above this address, * i.e. return with success: - */ - if (!(vma = find_vma_prev(mm, addr, &prev_vma))) - return addr; - - /* * new region fits between prev_vma->vm_end and * vma->vm_start, use it: */ - if (addr + len <= vma->vm_start && - (!prev_vma || (addr >= prev_vma->vm_end))) { + if (check_heap_stack_gap(vma, addr, len)) { /* remember the address as a hint for next time */ - mm->cached_hole_size = largest_hole; - return (mm->free_area_cache = addr); - } else { - /* pull free_area_cache down to the first hole */ - if (mm->free_area_cache == vma->vm_end) { - mm->free_area_cache = vma->vm_start; - mm->cached_hole_size = largest_hole; - } + mm->cached_hole_size = largest_hole; + return (mm->free_area_cache = addr); + } + /* pull free_area_cache down to the first hole */ + if (mm->free_area_cache == vma->vm_end) { + mm->free_area_cache = vma->vm_start; + mm->cached_hole_size = largest_hole; } /* remember the largest hole we saw so far */ if (addr + largest_hole < vma->vm_start) - largest_hole = vma->vm_start - addr; + largest_hole = vma->vm_start - addr; /* try just below the current vma->vm_start */ addr = (vma->vm_start - len) & huge_page_mask(h); @@ -363,22 +364,26 @@ try_again: fail: /* - * if hint left us with no space for the requested - * mapping then try again: - */ - if (first_time) { - mm->free_area_cache = base; - largest_hole = 0; - first_time = 0; - goto try_again; - } - /* * A failed mmap() very likely causes application failure, * so fall back to the bottom-up function here. This scenario * can happen with large stack limits and large mmap() * allocations. */ - mm->free_area_cache = TASK_UNMAPPED_BASE; + +#ifdef CONFIG_PAX_SEGMEXEC + if (mm->pax_flags & MF_PAX_SEGMEXEC) + mm->mmap_base = SEGMEXEC_TASK_UNMAPPED_BASE; + else +#endif + + mm->mmap_base = TASK_UNMAPPED_BASE; + +#ifdef CONFIG_PAX_RANDMMAP + if (mm->pax_flags & MF_PAX_RANDMMAP) + mm->mmap_base += mm->delta_mmap; +#endif + + mm->free_area_cache = mm->mmap_base; mm->cached_hole_size = ~0UL; addr = hugetlb_get_unmapped_area_bottomup(file, addr0, len, pgoff, flags); @@ -386,6 +391,7 @@ fail: /* * Restore the topdown base: */ + mm->mmap_base = base; mm->free_area_cache = base; mm->cached_hole_size = ~0UL; @@ -399,10 +405,19 @@ hugetlb_get_unmapped_area(struct file *f struct hstate *h = hstate_file(file); struct mm_struct *mm = current->mm; struct vm_area_struct *vma; + unsigned long pax_task_size = TASK_SIZE; if (len & ~huge_page_mask(h)) return -EINVAL; - if (len > TASK_SIZE) + +#ifdef CONFIG_PAX_SEGMEXEC + if (mm->pax_flags & MF_PAX_SEGMEXEC) + pax_task_size = SEGMEXEC_TASK_SIZE; +#endif + + pax_task_size -= PAGE_SIZE; + + if (len > pax_task_size) return -ENOMEM; if (flags & MAP_FIXED) { @@ -414,8 +429,7 @@ hugetlb_get_unmapped_area(struct file *f if (addr) { addr = ALIGN(addr, huge_page_size(h)); vma = find_vma(mm, addr); - if (TASK_SIZE - len >= addr && - (!vma || addr + len <= vma->vm_start)) + if (pax_task_size - len >= addr && check_heap_stack_gap(vma, addr, len)) return addr; } if (mm->get_unmapped_area == arch_get_unmapped_area) diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/mm/init.c linux-2.6.36.4-pax/arch/x86/mm/init.c --- linux-2.6.36.4/arch/x86/mm/init.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/mm/init.c 2010-12-14 21:18:01.000000000 +0100 @@ -70,11 +70,7 @@ static void __init find_early_table_spac * cause a hotspot and fill up ZONE_DMA. The page tables * need roughly 0.5KB per GB. */ -#ifdef CONFIG_X86_32 - start = 0x7000; -#else - start = 0x8000; -#endif + start = 0x100000; e820_table_start = find_e820_area(start, max_pfn_mapped<> PAGE_SHIFT)) + return 1; +#endif + if ((ISA_START_ADDRESS >> PAGE_SHIFT) <= pagenr && pagenr < (ISA_END_ADDRESS >> PAGE_SHIFT)) return 1; if (iomem_is_exclusive(pagenr << PAGE_SHIFT)) return 0; @@ -380,6 +382,86 @@ void free_init_pages(char *what, unsigne void free_initmem(void) { + +#ifdef CONFIG_PAX_KERNEXEC +#ifdef CONFIG_X86_32 + /* PaX: limit KERNEL_CS to actual size */ + unsigned long addr, limit; + struct desc_struct d; + int cpu; + + limit = paravirt_enabled() ? ktva_ktla(0xffffffff) : (unsigned long)&_etext; + limit = (limit - 1UL) >> PAGE_SHIFT; + + memset(__LOAD_PHYSICAL_ADDR + PAGE_OFFSET, POISON_FREE_INITMEM, PAGE_SIZE); + for (cpu = 0; cpu < NR_CPUS; cpu++) { + pack_descriptor(&d, get_desc_base(&get_cpu_gdt_table(cpu)[GDT_ENTRY_KERNEL_CS]), limit, 0x9B, 0xC); + write_gdt_entry(get_cpu_gdt_table(cpu), GDT_ENTRY_KERNEL_CS, &d, DESCTYPE_S); + } + + /* PaX: make KERNEL_CS read-only */ + addr = PFN_ALIGN(ktla_ktva((unsigned long)&_text)); + if (!paravirt_enabled()) + set_memory_ro(addr, (PFN_ALIGN(_sdata) - addr) >> PAGE_SHIFT); +/* + for (addr = ktla_ktva((unsigned long)&_text); addr < (unsigned long)&_sdata; addr += PMD_SIZE) { + pgd = pgd_offset_k(addr); + pud = pud_offset(pgd, addr); + pmd = pmd_offset(pud, addr); + set_pmd(pmd, __pmd(pmd_val(*pmd) & ~_PAGE_RW)); + } +*/ +#ifdef CONFIG_X86_PAE + set_memory_nx(PFN_ALIGN(__init_begin), (PFN_ALIGN(__init_end) - PFN_ALIGN(__init_begin)) >> PAGE_SHIFT); +/* + for (addr = (unsigned long)&__init_begin; addr < (unsigned long)&__init_end; addr += PMD_SIZE) { + pgd = pgd_offset_k(addr); + pud = pud_offset(pgd, addr); + pmd = pmd_offset(pud, addr); + set_pmd(pmd, __pmd(pmd_val(*pmd) | (_PAGE_NX & __supported_pte_mask))); + } +*/ +#endif + +#ifdef CONFIG_MODULES + set_memory_4k((unsigned long)MODULES_EXEC_VADDR, (MODULES_EXEC_END - MODULES_EXEC_VADDR) >> PAGE_SHIFT); +#endif + +#else + pgd_t *pgd; + pud_t *pud; + pmd_t *pmd; + unsigned long addr, end; + + /* PaX: make kernel code/rodata read-only, rest non-executable */ + for (addr = __START_KERNEL_map; addr < __START_KERNEL_map + KERNEL_IMAGE_SIZE; addr += PMD_SIZE) { + pgd = pgd_offset_k(addr); + pud = pud_offset(pgd, addr); + pmd = pmd_offset(pud, addr); + if (!pmd_present(*pmd)) + continue; + if ((unsigned long)_text <= addr && addr < (unsigned long)_sdata) + set_pmd(pmd, __pmd(pmd_val(*pmd) & ~_PAGE_RW)); + else + set_pmd(pmd, __pmd(pmd_val(*pmd) | (_PAGE_NX & __supported_pte_mask))); + } + + addr = (unsigned long)__va(__pa(__START_KERNEL_map)); + end = addr + KERNEL_IMAGE_SIZE; + for (; addr < end; addr += PMD_SIZE) { + pgd = pgd_offset_k(addr); + pud = pud_offset(pgd, addr); + pmd = pmd_offset(pud, addr); + if (!pmd_present(*pmd)) + continue; + if ((unsigned long)__va(__pa(_text)) <= addr && addr < (unsigned long)__va(__pa(_sdata))) + set_pmd(pmd, __pmd(pmd_val(*pmd) & ~_PAGE_RW)); + } +#endif + + flush_tlb_all(); +#endif + free_init_pages("unused kernel memory", (unsigned long)(&__init_begin), (unsigned long)(&__init_end)); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/mm/init_32.c linux-2.6.36.4-pax/arch/x86/mm/init_32.c --- linux-2.6.36.4/arch/x86/mm/init_32.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/mm/init_32.c 2010-10-27 22:58:07.000000000 +0200 @@ -72,36 +72,6 @@ static __init void *alloc_low_page(void) } /* - * Creates a middle page table and puts a pointer to it in the - * given global directory entry. This only returns the gd entry - * in non-PAE compilation mode, since the middle layer is folded. - */ -static pmd_t * __init one_md_table_init(pgd_t *pgd) -{ - pud_t *pud; - pmd_t *pmd_table; - -#ifdef CONFIG_X86_PAE - if (!(pgd_val(*pgd) & _PAGE_PRESENT)) { - if (after_bootmem) - pmd_table = (pmd_t *)alloc_bootmem_pages(PAGE_SIZE); - else - pmd_table = (pmd_t *)alloc_low_page(); - paravirt_alloc_pmd(&init_mm, __pa(pmd_table) >> PAGE_SHIFT); - set_pgd(pgd, __pgd(__pa(pmd_table) | _PAGE_PRESENT)); - pud = pud_offset(pgd, 0); - BUG_ON(pmd_table != pmd_offset(pud, 0)); - - return pmd_table; - } -#endif - pud = pud_offset(pgd, 0); - pmd_table = pmd_offset(pud, 0); - - return pmd_table; -} - -/* * Create a page table and place a pointer to it in a middle page * directory entry: */ @@ -121,13 +91,28 @@ static pte_t * __init one_page_table_ini page_table = (pte_t *)alloc_low_page(); paravirt_alloc_pte(&init_mm, __pa(page_table) >> PAGE_SHIFT); +#if defined(CONFIG_PAX_PAGEEXEC) || defined(CONFIG_PAX_SEGMEXEC) + set_pmd(pmd, __pmd(__pa(page_table) | _KERNPG_TABLE)); +#else set_pmd(pmd, __pmd(__pa(page_table) | _PAGE_TABLE)); +#endif BUG_ON(page_table != pte_offset_kernel(pmd, 0)); } return pte_offset_kernel(pmd, 0); } +static pmd_t * __init one_md_table_init(pgd_t *pgd) +{ + pud_t *pud; + pmd_t *pmd_table; + + pud = pud_offset(pgd, 0); + pmd_table = pmd_offset(pud, 0); + + return pmd_table; +} + pmd_t * __init populate_extra_pmd(unsigned long vaddr) { int pgd_idx = pgd_index(vaddr); @@ -201,6 +186,7 @@ page_table_range_init(unsigned long star int pgd_idx, pmd_idx; unsigned long vaddr; pgd_t *pgd; + pud_t *pud; pmd_t *pmd; pte_t *pte = NULL; @@ -210,8 +196,13 @@ page_table_range_init(unsigned long star pgd = pgd_base + pgd_idx; for ( ; (pgd_idx < PTRS_PER_PGD) && (vaddr != end); pgd++, pgd_idx++) { - pmd = one_md_table_init(pgd); - pmd = pmd + pmd_index(vaddr); + pud = pud_offset(pgd, vaddr); + pmd = pmd_offset(pud, vaddr); + +#ifdef CONFIG_X86_PAE + paravirt_alloc_pmd(&init_mm, __pa(pmd) >> PAGE_SHIFT); +#endif + for (; (pmd_idx < PTRS_PER_PMD) && (vaddr != end); pmd++, pmd_idx++) { pte = page_table_kmap_check(one_page_table_init(pmd), @@ -223,11 +214,20 @@ page_table_range_init(unsigned long star } } -static inline int is_kernel_text(unsigned long addr) +static inline int is_kernel_text(unsigned long start, unsigned long end) { - if (addr >= PAGE_OFFSET && addr <= (unsigned long)__init_end) - return 1; - return 0; + if ((start > ktla_ktva((unsigned long)_etext) || + end <= ktla_ktva((unsigned long)_stext)) && + (start > ktla_ktva((unsigned long)_einittext) || + end <= ktla_ktva((unsigned long)_sinittext)) && + +#ifdef CONFIG_ACPI_SLEEP + (start > (unsigned long)__va(acpi_wakeup_address) + 0x4000 || end <= (unsigned long)__va(acpi_wakeup_address)) && +#endif + + (start > (unsigned long)__va(0xfffff) || end <= (unsigned long)__va(0xc0000))) + return 0; + return 1; } /* @@ -244,9 +244,10 @@ kernel_physical_mapping_init(unsigned lo unsigned long last_map_addr = end; unsigned long start_pfn, end_pfn; pgd_t *pgd_base = swapper_pg_dir; - int pgd_idx, pmd_idx, pte_ofs; + unsigned int pgd_idx, pmd_idx, pte_ofs; unsigned long pfn; pgd_t *pgd; + pud_t *pud; pmd_t *pmd; pte_t *pte; unsigned pages_2m, pages_4k; @@ -279,8 +280,13 @@ repeat: pfn = start_pfn; pgd_idx = pgd_index((pfn<> PAGE_SHIFT); +#endif if (pfn >= end_pfn) continue; @@ -292,14 +298,13 @@ repeat: #endif for (; pmd_idx < PTRS_PER_PMD && pfn < end_pfn; pmd++, pmd_idx++) { - unsigned int addr = pfn * PAGE_SIZE + PAGE_OFFSET; + unsigned long address = pfn * PAGE_SIZE + PAGE_OFFSET; /* * Map with big pages if possible, otherwise * create normal page tables: */ if (use_pse) { - unsigned int addr2; pgprot_t prot = PAGE_KERNEL_LARGE; /* * first pass will use the same initial @@ -309,11 +314,7 @@ repeat: __pgprot(PTE_IDENT_ATTR | _PAGE_PSE); - addr2 = (pfn + PTRS_PER_PTE-1) * PAGE_SIZE + - PAGE_OFFSET + PAGE_SIZE-1; - - if (is_kernel_text(addr) || - is_kernel_text(addr2)) + if (is_kernel_text(address, address + PMD_SIZE)) prot = PAGE_KERNEL_LARGE_EXEC; pages_2m++; @@ -330,7 +331,7 @@ repeat: pte_ofs = pte_index((pfn<> 10, - (unsigned long)&_etext, (unsigned long)&_edata, - ((unsigned long)&_edata - (unsigned long)&_etext) >> 10, + (unsigned long)&_sdata, (unsigned long)&_edata, + ((unsigned long)&_edata - (unsigned long)&_sdata) >> 10, - (unsigned long)&_text, (unsigned long)&_etext, + ktla_ktva((unsigned long)&_text), ktla_ktva((unsigned long)&_etext), ((unsigned long)&_etext - (unsigned long)&_text) >> 10); /* @@ -1013,6 +1018,7 @@ void set_kernel_text_rw(void) if (!kernel_set_to_readonly) return; + start = ktla_ktva(start); pr_debug("Set kernel text: %lx - %lx for read write\n", start, start+size); @@ -1027,6 +1033,7 @@ void set_kernel_text_ro(void) if (!kernel_set_to_readonly) return; + start = ktla_ktva(start); pr_debug("Set kernel text: %lx - %lx for read only\n", start, start+size); @@ -1038,6 +1045,7 @@ void mark_rodata_ro(void) unsigned long start = PFN_ALIGN(_text); unsigned long size = PFN_ALIGN(_etext) - start; + start = ktla_ktva(start); set_pages_ro(virt_to_page(start), size >> PAGE_SHIFT); printk(KERN_INFO "Write protecting the kernel text: %luk\n", size >> 10); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/mm/init_64.c linux-2.6.36.4-pax/arch/x86/mm/init_64.c --- linux-2.6.36.4/arch/x86/mm/init_64.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/mm/init_64.c 2010-10-27 22:58:07.000000000 +0200 @@ -50,7 +50,6 @@ #include #include #include -#include static unsigned long dma_reserve __initdata; @@ -74,7 +73,7 @@ early_param("gbpages", parse_direct_gbpa * around without checking the pgd every time. */ -pteval_t __supported_pte_mask __read_mostly = ~_PAGE_IOMAP; +pteval_t __supported_pte_mask __read_only = ~(_PAGE_NX | _PAGE_IOMAP); EXPORT_SYMBOL_GPL(__supported_pte_mask); int force_personality32; @@ -165,7 +164,9 @@ void set_pte_vaddr_pud(pud_t *pud_page, pmd = fill_pmd(pud, vaddr); pte = fill_pte(pmd, vaddr); + pax_open_kernel(); set_pte(pte, new_pte); + pax_close_kernel(); /* * It's enough to flush this one mapping. @@ -224,14 +225,12 @@ static void __init __init_extra_mapping( pgd = pgd_offset_k((unsigned long)__va(phys)); if (pgd_none(*pgd)) { pud = (pud_t *) spp_getpage(); - set_pgd(pgd, __pgd(__pa(pud) | _KERNPG_TABLE | - _PAGE_USER)); + set_pgd(pgd, __pgd(__pa(pud) | _PAGE_TABLE)); } pud = pud_offset(pgd, (unsigned long)__va(phys)); if (pud_none(*pud)) { pmd = (pmd_t *) spp_getpage(); - set_pud(pud, __pud(__pa(pmd) | _KERNPG_TABLE | - _PAGE_USER)); + set_pud(pud, __pud(__pa(pmd) | _PAGE_TABLE)); } pmd = pmd_offset(pud, phys); BUG_ON(!pmd_none(*pmd)); @@ -680,6 +679,12 @@ void __init mem_init(void) pci_iommu_alloc(); +#ifdef CONFIG_PAX_PER_CPU_PGD + clone_pgd_range(get_cpu_pgd(0) + KERNEL_PGD_BOUNDARY, + swapper_pg_dir + KERNEL_PGD_BOUNDARY, + KERNEL_PGD_PTRS); +#endif + /* clear_bss() already clear the empty_zero_page */ reservedpages = 0; @@ -886,8 +891,8 @@ int kern_addr_valid(unsigned long addr) static struct vm_area_struct gate_vma = { .vm_start = VSYSCALL_START, .vm_end = VSYSCALL_START + (VSYSCALL_MAPPED_PAGES * PAGE_SIZE), - .vm_page_prot = PAGE_READONLY_EXEC, - .vm_flags = VM_READ | VM_EXEC + .vm_page_prot = PAGE_READONLY, + .vm_flags = VM_READ }; struct vm_area_struct *get_gate_vma(struct task_struct *tsk) @@ -921,7 +926,7 @@ int in_gate_area_no_task(unsigned long a const char *arch_vma_name(struct vm_area_struct *vma) { - if (vma->vm_mm && vma->vm_start == (long)vma->vm_mm->context.vdso) + if (vma->vm_mm && vma->vm_start == vma->vm_mm->context.vdso) return "[vdso]"; if (vma == &gate_vma) return "[vsyscall]"; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/mm/iomap_32.c linux-2.6.36.4-pax/arch/x86/mm/iomap_32.c --- linux-2.6.36.4/arch/x86/mm/iomap_32.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/mm/iomap_32.c 2010-10-27 22:58:07.000000000 +0200 @@ -65,7 +65,11 @@ void *kmap_atomic_prot_pfn(unsigned long debug_kmap_atomic(type); idx = type + KM_TYPE_NR * smp_processor_id(); vaddr = __fix_to_virt(FIX_KMAP_BEGIN + idx); + + pax_open_kernel(); set_pte(kmap_pte - idx, pfn_pte(pfn, prot)); + pax_close_kernel(); + arch_flush_lazy_mmu_mode(); return (void *)vaddr; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/mm/ioremap.c linux-2.6.36.4-pax/arch/x86/mm/ioremap.c --- linux-2.6.36.4/arch/x86/mm/ioremap.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/mm/ioremap.c 2010-10-27 22:58:07.000000000 +0200 @@ -104,7 +104,7 @@ static void __iomem *__ioremap_caller(re for (pfn = phys_addr >> PAGE_SHIFT; pfn <= last_pfn; pfn++) { int is_ram = page_is_ram(pfn); - if (is_ram && pfn_valid(pfn) && !PageReserved(pfn_to_page(pfn))) + if (is_ram && pfn_valid(pfn) && (pfn >= 0x100 || !PageReserved(pfn_to_page(pfn)))) return NULL; WARN_ON_ONCE(is_ram); } @@ -344,7 +344,7 @@ static int __init early_ioremap_debug_se early_param("early_ioremap_debug", early_ioremap_debug_setup); static __initdata int after_paging_init; -static pte_t bm_pte[PAGE_SIZE/sizeof(pte_t)] __page_aligned_bss; +static pte_t bm_pte[PAGE_SIZE/sizeof(pte_t)] __read_only __aligned(PAGE_SIZE); static inline pmd_t * __init early_ioremap_pmd(unsigned long addr) { @@ -376,8 +376,7 @@ void __init early_ioremap_init(void) slot_virt[i] = __fix_to_virt(FIX_BTMAP_BEGIN - NR_FIX_BTMAPS*i); pmd = early_ioremap_pmd(fix_to_virt(FIX_BTMAP_BEGIN)); - memset(bm_pte, 0, sizeof(bm_pte)); - pmd_populate_kernel(&init_mm, pmd, bm_pte); + pmd_populate_user(&init_mm, pmd, bm_pte); /* * The boot-ioremap range spans multiple pmds, for which diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/mm/kmemcheck/kmemcheck.c linux-2.6.36.4-pax/arch/x86/mm/kmemcheck/kmemcheck.c --- linux-2.6.36.4/arch/x86/mm/kmemcheck/kmemcheck.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/mm/kmemcheck/kmemcheck.c 2010-10-27 22:58:07.000000000 +0200 @@ -622,9 +622,9 @@ bool kmemcheck_fault(struct pt_regs *reg * memory (e.g. tracked pages)? For now, we need this to avoid * invoking kmemcheck for PnP BIOS calls. */ - if (regs->flags & X86_VM_MASK) + if (v8086_mode(regs)) return false; - if (regs->cs != __KERNEL_CS) + if (regs->cs != __KERNEL_CS && regs->cs != __KERNEXEC_KERNEL_CS) return false; pte = kmemcheck_pte_lookup(address); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/mm/mmap.c linux-2.6.36.4-pax/arch/x86/mm/mmap.c --- linux-2.6.36.4/arch/x86/mm/mmap.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/mm/mmap.c 2010-10-27 22:58:07.000000000 +0200 @@ -49,7 +49,7 @@ static unsigned int stack_maxrandom_size * Leave an at least ~128 MB hole with possible stack randomization. */ #define MIN_GAP (128*1024*1024UL + stack_maxrandom_size()) -#define MAX_GAP (TASK_SIZE/6*5) +#define MAX_GAP (pax_task_size/6*5) /* * True on X86_32 or when emulating IA32 on X86_64 @@ -94,27 +94,40 @@ static unsigned long mmap_rnd(void) return rnd << PAGE_SHIFT; } -static unsigned long mmap_base(void) +static unsigned long mmap_base(struct mm_struct *mm) { unsigned long gap = rlimit(RLIMIT_STACK); + unsigned long pax_task_size = TASK_SIZE; + +#ifdef CONFIG_PAX_SEGMEXEC + if (mm->pax_flags & MF_PAX_SEGMEXEC) + pax_task_size = SEGMEXEC_TASK_SIZE; +#endif if (gap < MIN_GAP) gap = MIN_GAP; else if (gap > MAX_GAP) gap = MAX_GAP; - return PAGE_ALIGN(TASK_SIZE - gap - mmap_rnd()); + return PAGE_ALIGN(pax_task_size - gap - mmap_rnd()); } /* * Bottom-up (legacy) layout on X86_32 did not support randomization, X86_64 * does, but not when emulating X86_32 */ -static unsigned long mmap_legacy_base(void) +static unsigned long mmap_legacy_base(struct mm_struct *mm) { - if (mmap_is_ia32()) + if (mmap_is_ia32()) { + +#ifdef CONFIG_PAX_SEGMEXEC + if (mm->pax_flags & MF_PAX_SEGMEXEC) + return SEGMEXEC_TASK_UNMAPPED_BASE; + else +#endif + return TASK_UNMAPPED_BASE; - else + } else return TASK_UNMAPPED_BASE + mmap_rnd(); } @@ -125,11 +138,23 @@ static unsigned long mmap_legacy_base(vo void arch_pick_mmap_layout(struct mm_struct *mm) { if (mmap_is_legacy()) { - mm->mmap_base = mmap_legacy_base(); + mm->mmap_base = mmap_legacy_base(mm); + +#ifdef CONFIG_PAX_RANDMMAP + if (mm->pax_flags & MF_PAX_RANDMMAP) + mm->mmap_base += mm->delta_mmap; +#endif + mm->get_unmapped_area = arch_get_unmapped_area; mm->unmap_area = arch_unmap_area; } else { - mm->mmap_base = mmap_base(); + mm->mmap_base = mmap_base(mm); + +#ifdef CONFIG_PAX_RANDMMAP + if (mm->pax_flags & MF_PAX_RANDMMAP) + mm->mmap_base -= mm->delta_mmap + mm->delta_stack; +#endif + mm->get_unmapped_area = arch_get_unmapped_area_topdown; mm->unmap_area = arch_unmap_area_topdown; } diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/mm/numa_32.c linux-2.6.36.4-pax/arch/x86/mm/numa_32.c --- linux-2.6.36.4/arch/x86/mm/numa_32.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/mm/numa_32.c 2010-10-27 22:58:07.000000000 +0200 @@ -98,7 +98,6 @@ unsigned long node_memmap_size_bytes(int } #endif -extern unsigned long find_max_low_pfn(void); extern unsigned long highend_pfn, highstart_pfn; #define LARGE_PAGE_BYTES (PTRS_PER_PTE * PAGE_SIZE) diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/mm/pageattr-test.c linux-2.6.36.4-pax/arch/x86/mm/pageattr-test.c --- linux-2.6.36.4/arch/x86/mm/pageattr-test.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/mm/pageattr-test.c 2010-10-27 22:58:07.000000000 +0200 @@ -36,7 +36,7 @@ enum { static int pte_testbit(pte_t pte) { - return pte_flags(pte) & _PAGE_UNUSED1; + return pte_flags(pte) & _PAGE_CPA_TEST; } struct split_state { diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/mm/pageattr.c linux-2.6.36.4-pax/arch/x86/mm/pageattr.c --- linux-2.6.36.4/arch/x86/mm/pageattr.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/mm/pageattr.c 2010-10-27 22:58:07.000000000 +0200 @@ -261,16 +261,17 @@ static inline pgprot_t static_protection * PCI BIOS based config access (CONFIG_PCI_GOBIOS) support. */ if (within(pfn, BIOS_BEGIN >> PAGE_SHIFT, BIOS_END >> PAGE_SHIFT)) - pgprot_val(forbidden) |= _PAGE_NX; + pgprot_val(forbidden) |= _PAGE_NX & __supported_pte_mask; /* * The kernel text needs to be executable for obvious reasons * Does not cover __inittext since that is gone later on. On * 64bit we do not enforce !NX on the low mapping */ - if (within(address, (unsigned long)_text, (unsigned long)_etext)) - pgprot_val(forbidden) |= _PAGE_NX; + if (within(address, ktla_ktva((unsigned long)_text), ktla_ktva((unsigned long)_etext))) + pgprot_val(forbidden) |= _PAGE_NX & __supported_pte_mask; +#ifdef CONFIG_DEBUG_RODATA /* * The .rodata section needs to be read-only. Using the pfn * catches all aliases. @@ -278,6 +279,7 @@ static inline pgprot_t static_protection if (within(pfn, __pa((unsigned long)__start_rodata) >> PAGE_SHIFT, __pa((unsigned long)__end_rodata) >> PAGE_SHIFT)) pgprot_val(forbidden) |= _PAGE_RW; +#endif #if defined(CONFIG_X86_64) && defined(CONFIG_DEBUG_RODATA) /* @@ -316,6 +318,13 @@ static inline pgprot_t static_protection } #endif +#ifdef CONFIG_PAX_KERNEXEC + if (within(pfn, __pa((unsigned long)&_text), __pa((unsigned long)&_sdata))) { + pgprot_val(forbidden) |= _PAGE_RW; + pgprot_val(forbidden) |= _PAGE_NX & __supported_pte_mask; + } +#endif + prot = __pgprot(pgprot_val(prot) & ~pgprot_val(forbidden)); return prot; @@ -368,23 +377,37 @@ EXPORT_SYMBOL_GPL(lookup_address); static void __set_pmd_pte(pte_t *kpte, unsigned long address, pte_t pte) { /* change init_mm */ + pax_open_kernel(); set_pte_atomic(kpte, pte); + #ifdef CONFIG_X86_32 if (!SHARED_KERNEL_PMD) { + +#ifdef CONFIG_PAX_PER_CPU_PGD + unsigned long cpu; +#else struct page *page; +#endif +#ifdef CONFIG_PAX_PER_CPU_PGD + for (cpu = 0; cpu < NR_CPUS; ++cpu) { + pgd_t *pgd = get_cpu_pgd(cpu); +#else list_for_each_entry(page, &pgd_list, lru) { - pgd_t *pgd; + pgd_t *pgd = (pgd_t *)page_address(page); +#endif + pud_t *pud; pmd_t *pmd; - pgd = (pgd_t *)page_address(page) + pgd_index(address); + pgd += pgd_index(address); pud = pud_offset(pgd, address); pmd = pmd_offset(pud, address); set_pte_atomic((pte_t *)pmd, pte); } } #endif + pax_close_kernel(); } static int diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/mm/pat.c linux-2.6.36.4-pax/arch/x86/mm/pat.c --- linux-2.6.36.4/arch/x86/mm/pat.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/mm/pat.c 2010-10-27 22:58:07.000000000 +0200 @@ -361,7 +361,7 @@ int free_memtype(u64 start, u64 end) if (!entry) { printk(KERN_INFO "%s:%d freeing invalid memtype %Lx-%Lx\n", - current->comm, current->pid, start, end); + current->comm, task_pid_nr(current), start, end); return -EINVAL; } @@ -492,8 +492,8 @@ static inline int range_is_allowed(unsig while (cursor < to) { if (!devmem_is_allowed(pfn)) { printk(KERN_INFO - "Program %s tried to access /dev/mem between %Lx->%Lx.\n", - current->comm, from, to); + "Program %s tried to access /dev/mem between %Lx->%Lx (%Lx).\n", + current->comm, from, to, cursor); return 0; } cursor += PAGE_SIZE; @@ -557,7 +557,7 @@ int kernel_map_sync_memtype(u64 base, un printk(KERN_INFO "%s:%d ioremap_change_attr failed %s " "for %Lx-%Lx\n", - current->comm, current->pid, + current->comm, task_pid_nr(current), cattr_name(flags), base, (unsigned long long)(base + size)); return -EINVAL; @@ -593,7 +593,7 @@ static int reserve_pfn_range(u64 paddr, if (want_flags != flags) { printk(KERN_WARNING "%s:%d map pfn RAM range req %s for %Lx-%Lx, got %s\n", - current->comm, current->pid, + current->comm, task_pid_nr(current), cattr_name(want_flags), (unsigned long long)paddr, (unsigned long long)(paddr + size), @@ -615,7 +615,7 @@ static int reserve_pfn_range(u64 paddr, free_memtype(paddr, paddr + size); printk(KERN_ERR "%s:%d map pfn expected mapping type %s" " for %Lx-%Lx, got %s\n", - current->comm, current->pid, + current->comm, task_pid_nr(current), cattr_name(want_flags), (unsigned long long)paddr, (unsigned long long)(paddr + size), diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/mm/pgtable.c linux-2.6.36.4-pax/arch/x86/mm/pgtable.c --- linux-2.6.36.4/arch/x86/mm/pgtable.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/mm/pgtable.c 2010-12-14 21:18:01.000000000 +0100 @@ -84,8 +84,58 @@ static inline void pgd_list_del(pgd_t *p list_del(&page->lru); } -#define UNSHARED_PTRS_PER_PGD \ - (SHARED_KERNEL_PMD ? KERNEL_PGD_BOUNDARY : PTRS_PER_PGD) +#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF) +pgdval_t clone_pgd_mask __read_only = ~_PAGE_PRESENT; + +void __shadow_user_pgds(pgd_t *dst, const pgd_t *src, int count) +{ + while (count--) + *dst++ = __pgd((pgd_val(*src++) | (_PAGE_NX & __supported_pte_mask)) & ~_PAGE_USER); +} +#endif + +#ifdef CONFIG_PAX_PER_CPU_PGD +void __clone_user_pgds(pgd_t *dst, const pgd_t *src, int count) +{ + while (count--) + +#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF) + *dst++ = __pgd(pgd_val(*src++) & clone_pgd_mask); +#else + *dst++ = *src++; +#endif + +} +#endif + +#ifdef CONFIG_PAX_PER_CPU_PGD +static inline void pgd_ctor(pgd_t *pgd) {} +static inline void pgd_dtor(pgd_t *pgd) {} +#ifdef CONFIG_X86_64 +#define pxd_t pud_t +#define pyd_t pgd_t +#define paravirt_release_pxd(pfn) paravirt_release_pud(pfn) +#define pxd_free(mm, pud) pud_free((mm), (pud)) +#define pyd_populate(mm, pgd, pud) pgd_populate((mm), (pgd), (pud)) +#define pyd_offset(mm ,address) pgd_offset((mm), (address)) +#define PYD_SIZE PGDIR_SIZE +#else +#define pxd_t pmd_t +#define pyd_t pud_t +#define paravirt_release_pxd(pfn) paravirt_release_pmd(pfn) +#define pxd_free(mm, pud) pmd_free((mm), (pud)) +#define pyd_populate(mm, pgd, pud) pud_populate((mm), (pgd), (pud)) +#define pyd_offset(mm ,address) pud_offset((mm), (address)) +#define PYD_SIZE PUD_SIZE +#endif +#else +#define pxd_t pmd_t +#define pyd_t pud_t +#define paravirt_release_pxd(pfn) paravirt_release_pmd(pfn) +#define pxd_free(mm, pmd) pmd_free((mm), (pmd)) +#define pyd_populate(mm, pud, pmd) pud_populate((mm), (pud), (pmd)) +#define pyd_offset(mm ,address) pud_offset((mm), (address)) +#define PYD_SIZE PUD_SIZE static void pgd_ctor(pgd_t *pgd) { @@ -120,6 +170,7 @@ static void pgd_dtor(pgd_t *pgd) pgd_list_del(pgd); spin_unlock_irqrestore(&pgd_lock, flags); } +#endif /* * List of all pgd's needed for non-PAE so it can invalidate entries @@ -132,7 +183,7 @@ static void pgd_dtor(pgd_t *pgd) * -- wli */ -#ifdef CONFIG_X86_PAE +#if defined(CONFIG_X86_32) && defined(CONFIG_X86_PAE) /* * In PAE mode, we need to do a cr3 reload (=tlb flush) when * updating the top-level pagetable entries to guarantee the @@ -144,7 +195,7 @@ static void pgd_dtor(pgd_t *pgd) * not shared between pagetables (!SHARED_KERNEL_PMDS), we allocate * and initialize the kernel pmds here. */ -#define PREALLOCATED_PMDS UNSHARED_PTRS_PER_PGD +#define PREALLOCATED_PXDS (SHARED_KERNEL_PMD ? KERNEL_PGD_BOUNDARY : PTRS_PER_PGD) void pud_populate(struct mm_struct *mm, pud_t *pudp, pmd_t *pmd) { @@ -163,36 +214,38 @@ void pud_populate(struct mm_struct *mm, if (mm == current->active_mm) write_cr3(read_cr3()); } +#elif defined(CONFIG_X86_64) && defined(CONFIG_PAX_PER_CPU_PGD) +#define PREALLOCATED_PXDS USER_PGD_PTRS #else /* !CONFIG_X86_PAE */ /* No need to prepopulate any pagetable entries in non-PAE modes. */ -#define PREALLOCATED_PMDS 0 +#define PREALLOCATED_PXDS 0 #endif /* CONFIG_X86_PAE */ -static void free_pmds(pmd_t *pmds[]) +static void free_pxds(pxd_t *pxds[]) { int i; - for(i = 0; i < PREALLOCATED_PMDS; i++) - if (pmds[i]) - free_page((unsigned long)pmds[i]); + for(i = 0; i < PREALLOCATED_PXDS; i++) + if (pxds[i]) + free_page((unsigned long)pxds[i]); } -static int preallocate_pmds(pmd_t *pmds[]) +static int preallocate_pxds(pxd_t *pxds[]) { int i; bool failed = false; - for(i = 0; i < PREALLOCATED_PMDS; i++) { - pmd_t *pmd = (pmd_t *)__get_free_page(PGALLOC_GFP); - if (pmd == NULL) + for(i = 0; i < PREALLOCATED_PXDS; i++) { + pxd_t *pxd = (pxd_t *)__get_free_page(PGALLOC_GFP); + if (pxd == NULL) failed = true; - pmds[i] = pmd; + pxds[i] = pxd; } if (failed) { - free_pmds(pmds); + free_pxds(pxds); return -ENOMEM; } @@ -205,51 +258,56 @@ static int preallocate_pmds(pmd_t *pmds[ * preallocate which never got a corresponding vma will need to be * freed manually. */ -static void pgd_mop_up_pmds(struct mm_struct *mm, pgd_t *pgdp) +static void pgd_mop_up_pxds(struct mm_struct *mm, pgd_t *pgdp) { int i; - for(i = 0; i < PREALLOCATED_PMDS; i++) { + for(i = 0; i < PREALLOCATED_PXDS; i++) { pgd_t pgd = pgdp[i]; if (pgd_val(pgd) != 0) { - pmd_t *pmd = (pmd_t *)pgd_page_vaddr(pgd); + pxd_t *pxd = (pxd_t *)pgd_page_vaddr(pgd); - pgdp[i] = native_make_pgd(0); + set_pgd(pgdp + i, native_make_pgd(0)); - paravirt_release_pmd(pgd_val(pgd) >> PAGE_SHIFT); - pmd_free(mm, pmd); + paravirt_release_pxd(pgd_val(pgd) >> PAGE_SHIFT); + pxd_free(mm, pxd); } } } -static void pgd_prepopulate_pmd(struct mm_struct *mm, pgd_t *pgd, pmd_t *pmds[]) +static void pgd_prepopulate_pxd(struct mm_struct *mm, pgd_t *pgd, pxd_t *pxds[]) { - pud_t *pud; + pyd_t *pyd; unsigned long addr; int i; - if (PREALLOCATED_PMDS == 0) /* Work around gcc-3.4.x bug */ + if (PREALLOCATED_PXDS == 0) /* Work around gcc-3.4.x bug */ return; - pud = pud_offset(pgd, 0); - - for (addr = i = 0; i < PREALLOCATED_PMDS; - i++, pud++, addr += PUD_SIZE) { - pmd_t *pmd = pmds[i]; +#ifdef CONFIG_X86_64 + pyd = pyd_offset(mm, 0L); +#else + pyd = pyd_offset(pgd, 0L); +#endif + + for (addr = i = 0; i < PREALLOCATED_PXDS; + i++, pyd++, addr += PYD_SIZE) { + pxd_t *pxd = pxds[i]; if (i >= KERNEL_PGD_BOUNDARY) - memcpy(pmd, (pmd_t *)pgd_page_vaddr(swapper_pg_dir[i]), - sizeof(pmd_t) * PTRS_PER_PMD); + memcpy(pxd, (pxd_t *)pgd_page_vaddr(swapper_pg_dir[i]), + sizeof(pxd_t) * PTRS_PER_PMD); - pud_populate(mm, pud, pmd); + pyd_populate(mm, pyd, pxd); } } pgd_t *pgd_alloc(struct mm_struct *mm) { pgd_t *pgd; - pmd_t *pmds[PREALLOCATED_PMDS]; + pxd_t *pxds[PREALLOCATED_PXDS]; + unsigned long flags; pgd = (pgd_t *)__get_free_page(PGALLOC_GFP); @@ -259,11 +317,11 @@ pgd_t *pgd_alloc(struct mm_struct *mm) mm->pgd = pgd; - if (preallocate_pmds(pmds) != 0) + if (preallocate_pxds(pxds) != 0) goto out_free_pgd; if (paravirt_pgd_alloc(mm) != 0) - goto out_free_pmds; + goto out_free_pxds; /* * Make sure that pre-populating the pmds is atomic with @@ -273,14 +331,14 @@ pgd_t *pgd_alloc(struct mm_struct *mm) spin_lock_irqsave(&pgd_lock, flags); pgd_ctor(pgd); - pgd_prepopulate_pmd(mm, pgd, pmds); + pgd_prepopulate_pxd(mm, pgd, pxds); spin_unlock_irqrestore(&pgd_lock, flags); return pgd; -out_free_pmds: - free_pmds(pmds); +out_free_pxds: + free_pxds(pxds); out_free_pgd: free_page((unsigned long)pgd); out: @@ -289,7 +347,7 @@ out: void pgd_free(struct mm_struct *mm, pgd_t *pgd) { - pgd_mop_up_pmds(mm, pgd); + pgd_mop_up_pxds(mm, pgd); pgd_dtor(pgd); paravirt_pgd_free(mm, pgd); free_page((unsigned long)pgd); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/mm/pgtable_32.c linux-2.6.36.4-pax/arch/x86/mm/pgtable_32.c --- linux-2.6.36.4/arch/x86/mm/pgtable_32.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/mm/pgtable_32.c 2010-10-27 22:58:07.000000000 +0200 @@ -48,10 +48,13 @@ void set_pte_vaddr(unsigned long vaddr, return; } pte = pte_offset_kernel(pmd, vaddr); + + pax_open_kernel(); if (pte_val(pteval)) set_pte_at(&init_mm, vaddr, pte, pteval); else pte_clear(&init_mm, vaddr, pte); + pax_close_kernel(); /* * It's enough to flush this one mapping. diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/mm/setup_nx.c linux-2.6.36.4-pax/arch/x86/mm/setup_nx.c --- linux-2.6.36.4/arch/x86/mm/setup_nx.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/mm/setup_nx.c 2010-10-27 22:58:07.000000000 +0200 @@ -5,8 +5,10 @@ #include #include +#if defined(CONFIG_X86_64) || defined(CONFIG_X86_PAE) static int disable_nx __cpuinitdata; +#ifndef CONFIG_PAX_PAGEEXEC /* * noexec = on|off * @@ -28,12 +30,17 @@ static int __init noexec_setup(char *str return 0; } early_param("noexec", noexec_setup); +#endif + +#endif void __cpuinit x86_configure_nx(void) { +#if defined(CONFIG_X86_64) || defined(CONFIG_X86_PAE) if (cpu_has_nx && !disable_nx) __supported_pte_mask |= _PAGE_NX; else +#endif __supported_pte_mask &= ~_PAGE_NX; } diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/mm/tlb.c linux-2.6.36.4-pax/arch/x86/mm/tlb.c --- linux-2.6.36.4/arch/x86/mm/tlb.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/mm/tlb.c 2010-10-27 22:58:07.000000000 +0200 @@ -13,7 +13,7 @@ #include DEFINE_PER_CPU_SHARED_ALIGNED(struct tlb_state, cpu_tlbstate) - = { &init_mm, 0, }; + = { &init_mm, 0 }; /* * Smarter SMP flushing macros. @@ -62,7 +62,11 @@ void leave_mm(int cpu) BUG(); cpumask_clear_cpu(cpu, mm_cpumask(percpu_read(cpu_tlbstate.active_mm))); + +#ifndef CONFIG_PAX_PER_CPU_PGD load_cr3(swapper_pg_dir); +#endif + } EXPORT_SYMBOL_GPL(leave_mm); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/oprofile/backtrace.c linux-2.6.36.4-pax/arch/x86/oprofile/backtrace.c --- linux-2.6.36.4/arch/x86/oprofile/backtrace.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/oprofile/backtrace.c 2010-10-27 22:58:07.000000000 +0200 @@ -58,7 +58,7 @@ static struct frame_head *dump_user_back struct frame_head bufhead[2]; /* Also check accessibility of one struct frame_head beyond */ - if (!access_ok(VERIFY_READ, head, sizeof(bufhead))) + if (!__access_ok(VERIFY_READ, head, sizeof(bufhead))) return NULL; if (__copy_from_user_inatomic(bufhead, head, sizeof(bufhead))) return NULL; @@ -78,7 +78,7 @@ x86_backtrace(struct pt_regs * const reg { struct frame_head *head = (struct frame_head *)frame_pointer(regs); - if (!user_mode_vm(regs)) { + if (!user_mode(regs)) { unsigned long stack = kernel_stack_pointer(regs); if (depth) dump_trace(NULL, regs, (unsigned long *)stack, 0, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/oprofile/op_model_p4.c linux-2.6.36.4-pax/arch/x86/oprofile/op_model_p4.c --- linux-2.6.36.4/arch/x86/oprofile/op_model_p4.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/oprofile/op_model_p4.c 2010-10-27 22:58:07.000000000 +0200 @@ -50,7 +50,7 @@ static inline void setup_num_counters(vo #endif } -static int inline addr_increment(void) +static inline int addr_increment(void) { #ifdef CONFIG_SMP return smp_num_siblings == 2 ? 2 : 1; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/pci/common.c linux-2.6.36.4-pax/arch/x86/pci/common.c --- linux-2.6.36.4/arch/x86/pci/common.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/pci/common.c 2010-10-27 22:58:44.000000000 +0200 @@ -32,8 +32,8 @@ int noioapicreroute = 1; int pcibios_last_bus = -1; unsigned long pirq_table_addr; struct pci_bus *pci_root_bus; -struct pci_raw_ops *raw_pci_ops; -struct pci_raw_ops *raw_pci_ext_ops; +const struct pci_raw_ops *raw_pci_ops; +const struct pci_raw_ops *raw_pci_ext_ops; int raw_pci_read(unsigned int domain, unsigned int bus, unsigned int devfn, int reg, int len, u32 *val) @@ -382,7 +382,7 @@ static const struct dmi_system_id __devi DMI_MATCH(DMI_PRODUCT_NAME, "ProLiant DL585 G2"), }, }, - {} + { NULL, NULL, {DMI_MATCH(DMI_NONE, {0})}, NULL} }; void __init dmi_check_pciprobe(void) diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/pci/direct.c linux-2.6.36.4-pax/arch/x86/pci/direct.c --- linux-2.6.36.4/arch/x86/pci/direct.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/pci/direct.c 2010-10-27 22:58:44.000000000 +0200 @@ -79,7 +79,7 @@ static int pci_conf1_write(unsigned int #undef PCI_CONF1_ADDRESS -struct pci_raw_ops pci_direct_conf1 = { +const struct pci_raw_ops pci_direct_conf1 = { .read = pci_conf1_read, .write = pci_conf1_write, }; @@ -173,7 +173,7 @@ static int pci_conf2_write(unsigned int #undef PCI_CONF2_ADDRESS -struct pci_raw_ops pci_direct_conf2 = { +const struct pci_raw_ops pci_direct_conf2 = { .read = pci_conf2_read, .write = pci_conf2_write, }; @@ -189,7 +189,7 @@ struct pci_raw_ops pci_direct_conf2 = { * This should be close to trivial, but it isn't, because there are buggy * chipsets (yes, you guessed it, by Intel and Compaq) that have no class ID. */ -static int __init pci_sanity_check(struct pci_raw_ops *o) +static int __init pci_sanity_check(const struct pci_raw_ops *o) { u32 x = 0; int year, devfn; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/pci/fixup.c linux-2.6.36.4-pax/arch/x86/pci/fixup.c --- linux-2.6.36.4/arch/x86/pci/fixup.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/pci/fixup.c 2010-10-27 22:58:07.000000000 +0200 @@ -364,7 +364,7 @@ static const struct dmi_system_id __devi DMI_MATCH(DMI_PRODUCT_NAME, "MS-6702E"), }, }, - {} + { NULL, NULL, {DMI_MATCH(DMI_NONE, {0})}, NULL } }; /* @@ -435,7 +435,7 @@ static const struct dmi_system_id __devi DMI_MATCH(DMI_PRODUCT_VERSION, "PSA40U"), }, }, - { } + { NULL, NULL, {DMI_MATCH(DMI_NONE, {0})}, NULL } }; static void __devinit pci_pre_fixup_toshiba_ohci1394(struct pci_dev *dev) diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/pci/irq.c linux-2.6.36.4-pax/arch/x86/pci/irq.c --- linux-2.6.36.4/arch/x86/pci/irq.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/pci/irq.c 2010-10-27 22:58:07.000000000 +0200 @@ -542,7 +542,7 @@ static __init int intel_router_probe(str static struct pci_device_id __initdata pirq_440gx[] = { { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443GX_0) }, { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443GX_2) }, - { }, + { PCI_DEVICE(0, 0) } }; /* 440GX has a proprietary PIRQ router -- don't use it */ @@ -1113,7 +1113,7 @@ static struct dmi_system_id __initdata p DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 360"), }, }, - { } + { NULL, NULL, {DMI_MATCH(DMI_NONE, {0})}, NULL } }; void __init pcibios_irq_init(void) diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/pci/mmconfig_32.c linux-2.6.36.4-pax/arch/x86/pci/mmconfig_32.c --- linux-2.6.36.4/arch/x86/pci/mmconfig_32.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/pci/mmconfig_32.c 2010-10-27 22:58:44.000000000 +0200 @@ -117,7 +117,7 @@ static int pci_mmcfg_write(unsigned int return 0; } -static struct pci_raw_ops pci_mmcfg = { +static const struct pci_raw_ops pci_mmcfg = { .read = pci_mmcfg_read, .write = pci_mmcfg_write, }; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/pci/mmconfig_64.c linux-2.6.36.4-pax/arch/x86/pci/mmconfig_64.c --- linux-2.6.36.4/arch/x86/pci/mmconfig_64.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/pci/mmconfig_64.c 2010-10-27 22:58:44.000000000 +0200 @@ -81,7 +81,7 @@ static int pci_mmcfg_write(unsigned int return 0; } -static struct pci_raw_ops pci_mmcfg = { +static const struct pci_raw_ops pci_mmcfg = { .read = pci_mmcfg_read, .write = pci_mmcfg_write, }; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/pci/numaq_32.c linux-2.6.36.4-pax/arch/x86/pci/numaq_32.c --- linux-2.6.36.4/arch/x86/pci/numaq_32.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/pci/numaq_32.c 2010-10-27 22:58:44.000000000 +0200 @@ -108,7 +108,7 @@ static int pci_conf1_mq_write(unsigned i #undef PCI_CONF1_MQ_ADDRESS -static struct pci_raw_ops pci_direct_conf1_mq = { +static const struct pci_raw_ops pci_direct_conf1_mq = { .read = pci_conf1_mq_read, .write = pci_conf1_mq_write }; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/pci/olpc.c linux-2.6.36.4-pax/arch/x86/pci/olpc.c --- linux-2.6.36.4/arch/x86/pci/olpc.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/pci/olpc.c 2010-10-27 22:58:44.000000000 +0200 @@ -297,7 +297,7 @@ static int pci_olpc_write(unsigned int s return 0; } -static struct pci_raw_ops pci_olpc_conf = { +static const struct pci_raw_ops pci_olpc_conf = { .read = pci_olpc_read, .write = pci_olpc_write, }; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/pci/pcbios.c linux-2.6.36.4-pax/arch/x86/pci/pcbios.c --- linux-2.6.36.4/arch/x86/pci/pcbios.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/pci/pcbios.c 2010-10-27 22:58:44.000000000 +0200 @@ -57,50 +57,93 @@ union bios32 { static struct { unsigned long address; unsigned short segment; -} bios32_indirect = { 0, __KERNEL_CS }; +} bios32_indirect __read_only = { 0, __PCIBIOS_CS }; /* * Returns the entry point for the given service, NULL on error */ -static unsigned long bios32_service(unsigned long service) +static unsigned long __devinit bios32_service(unsigned long service) { unsigned char return_code; /* %al */ unsigned long address; /* %ebx */ unsigned long length; /* %ecx */ unsigned long entry; /* %edx */ unsigned long flags; + struct desc_struct d, *gdt; local_irq_save(flags); - __asm__("lcall *(%%edi); cld" + + gdt = get_cpu_gdt_table(smp_processor_id()); + + pack_descriptor(&d, 0UL, 0xFFFFFUL, 0x9B, 0xC); + write_gdt_entry(gdt, GDT_ENTRY_PCIBIOS_CS, &d, DESCTYPE_S); + pack_descriptor(&d, 0UL, 0xFFFFFUL, 0x93, 0xC); + write_gdt_entry(gdt, GDT_ENTRY_PCIBIOS_DS, &d, DESCTYPE_S); + + __asm__("movw %w7, %%ds; lcall *(%%edi); push %%ss; pop %%ds; cld" : "=a" (return_code), "=b" (address), "=c" (length), "=d" (entry) : "0" (service), "1" (0), - "D" (&bios32_indirect)); + "D" (&bios32_indirect), + "r"(__PCIBIOS_DS) + : "memory"); + + pax_open_kernel(); + gdt[GDT_ENTRY_PCIBIOS_CS].a = 0; + gdt[GDT_ENTRY_PCIBIOS_CS].b = 0; + gdt[GDT_ENTRY_PCIBIOS_DS].a = 0; + gdt[GDT_ENTRY_PCIBIOS_DS].b = 0; + pax_close_kernel(); + local_irq_restore(flags); switch (return_code) { - case 0: - return address + entry; - case 0x80: /* Not present */ - printk(KERN_WARNING "bios32_service(0x%lx): not present\n", service); - return 0; - default: /* Shouldn't happen */ - printk(KERN_WARNING "bios32_service(0x%lx): returned 0x%x -- BIOS bug!\n", - service, return_code); + case 0: { + int cpu; + unsigned char flags; + + printk(KERN_INFO "bios32_service: base:%08lx length:%08lx entry:%08lx\n", address, length, entry); + if (address >= 0xFFFF0 || length > 0x100000 - address || length <= entry) { + printk(KERN_WARNING "bios32_service: not valid\n"); return 0; + } + address = address + PAGE_OFFSET; + length += 16UL; /* some BIOSs underreport this... */ + flags = 4; + if (length >= 64*1024*1024) { + length >>= PAGE_SHIFT; + flags |= 8; + } + + for (cpu = 0; cpu < NR_CPUS; cpu++) { + gdt = get_cpu_gdt_table(cpu); + pack_descriptor(&d, address, length, 0x9b, flags); + write_gdt_entry(gdt, GDT_ENTRY_PCIBIOS_CS, &d, DESCTYPE_S); + pack_descriptor(&d, address, length, 0x93, flags); + write_gdt_entry(gdt, GDT_ENTRY_PCIBIOS_DS, &d, DESCTYPE_S); + } + return entry; + } + case 0x80: /* Not present */ + printk(KERN_WARNING "bios32_service(0x%lx): not present\n", service); + return 0; + default: /* Shouldn't happen */ + printk(KERN_WARNING "bios32_service(0x%lx): returned 0x%x -- BIOS bug!\n", + service, return_code); + return 0; } } static struct { unsigned long address; unsigned short segment; -} pci_indirect = { 0, __KERNEL_CS }; +} pci_indirect __read_only = { 0, __PCIBIOS_CS }; -static int pci_bios_present; +static int pci_bios_present __read_only; static int __devinit check_pcibios(void) { @@ -109,11 +152,13 @@ static int __devinit check_pcibios(void) unsigned long flags, pcibios_entry; if ((pcibios_entry = bios32_service(PCI_SERVICE))) { - pci_indirect.address = pcibios_entry + PAGE_OFFSET; + pci_indirect.address = pcibios_entry; local_irq_save(flags); - __asm__( - "lcall *(%%edi); cld\n\t" + __asm__("movw %w6, %%ds\n\t" + "lcall *%%ss:(%%edi); cld\n\t" + "push %%ss\n\t" + "pop %%ds\n\t" "jc 1f\n\t" "xor %%ah, %%ah\n" "1:" @@ -122,7 +167,8 @@ static int __devinit check_pcibios(void) "=b" (ebx), "=c" (ecx) : "1" (PCIBIOS_PCI_BIOS_PRESENT), - "D" (&pci_indirect) + "D" (&pci_indirect), + "r" (__PCIBIOS_DS) : "memory"); local_irq_restore(flags); @@ -166,7 +212,10 @@ static int pci_bios_read(unsigned int se switch (len) { case 1: - __asm__("lcall *(%%esi); cld\n\t" + __asm__("movw %w6, %%ds\n\t" + "lcall *%%ss:(%%esi); cld\n\t" + "push %%ss\n\t" + "pop %%ds\n\t" "jc 1f\n\t" "xor %%ah, %%ah\n" "1:" @@ -175,7 +224,8 @@ static int pci_bios_read(unsigned int se : "1" (PCIBIOS_READ_CONFIG_BYTE), "b" (bx), "D" ((long)reg), - "S" (&pci_indirect)); + "S" (&pci_indirect), + "r" (__PCIBIOS_DS)); /* * Zero-extend the result beyond 8 bits, do not trust the * BIOS having done it: @@ -183,7 +233,10 @@ static int pci_bios_read(unsigned int se *value &= 0xff; break; case 2: - __asm__("lcall *(%%esi); cld\n\t" + __asm__("movw %w6, %%ds\n\t" + "lcall *%%ss:(%%esi); cld\n\t" + "push %%ss\n\t" + "pop %%ds\n\t" "jc 1f\n\t" "xor %%ah, %%ah\n" "1:" @@ -192,7 +245,8 @@ static int pci_bios_read(unsigned int se : "1" (PCIBIOS_READ_CONFIG_WORD), "b" (bx), "D" ((long)reg), - "S" (&pci_indirect)); + "S" (&pci_indirect), + "r" (__PCIBIOS_DS)); /* * Zero-extend the result beyond 16 bits, do not trust the * BIOS having done it: @@ -200,7 +254,10 @@ static int pci_bios_read(unsigned int se *value &= 0xffff; break; case 4: - __asm__("lcall *(%%esi); cld\n\t" + __asm__("movw %w6, %%ds\n\t" + "lcall *%%ss:(%%esi); cld\n\t" + "push %%ss\n\t" + "pop %%ds\n\t" "jc 1f\n\t" "xor %%ah, %%ah\n" "1:" @@ -209,7 +266,8 @@ static int pci_bios_read(unsigned int se : "1" (PCIBIOS_READ_CONFIG_DWORD), "b" (bx), "D" ((long)reg), - "S" (&pci_indirect)); + "S" (&pci_indirect), + "r" (__PCIBIOS_DS)); break; } @@ -232,7 +290,10 @@ static int pci_bios_write(unsigned int s switch (len) { case 1: - __asm__("lcall *(%%esi); cld\n\t" + __asm__("movw %w6, %%ds\n\t" + "lcall *%%ss:(%%esi); cld\n\t" + "push %%ss\n\t" + "pop %%ds\n\t" "jc 1f\n\t" "xor %%ah, %%ah\n" "1:" @@ -241,10 +302,14 @@ static int pci_bios_write(unsigned int s "c" (value), "b" (bx), "D" ((long)reg), - "S" (&pci_indirect)); + "S" (&pci_indirect), + "r" (__PCIBIOS_DS)); break; case 2: - __asm__("lcall *(%%esi); cld\n\t" + __asm__("movw %w6, %%ds\n\t" + "lcall *%%ss:(%%esi); cld\n\t" + "push %%ss\n\t" + "pop %%ds\n\t" "jc 1f\n\t" "xor %%ah, %%ah\n" "1:" @@ -253,10 +318,14 @@ static int pci_bios_write(unsigned int s "c" (value), "b" (bx), "D" ((long)reg), - "S" (&pci_indirect)); + "S" (&pci_indirect), + "r" (__PCIBIOS_DS)); break; case 4: - __asm__("lcall *(%%esi); cld\n\t" + __asm__("movw %w6, %%ds\n\t" + "lcall *%%ss:(%%esi); cld\n\t" + "push %%ss\n\t" + "pop %%ds\n\t" "jc 1f\n\t" "xor %%ah, %%ah\n" "1:" @@ -265,7 +334,8 @@ static int pci_bios_write(unsigned int s "c" (value), "b" (bx), "D" ((long)reg), - "S" (&pci_indirect)); + "S" (&pci_indirect), + "r" (__PCIBIOS_DS)); break; } @@ -279,7 +349,7 @@ static int pci_bios_write(unsigned int s * Function table for BIOS32 access */ -static struct pci_raw_ops pci_bios_access = { +static const struct pci_raw_ops pci_bios_access = { .read = pci_bios_read, .write = pci_bios_write }; @@ -288,7 +358,7 @@ static struct pci_raw_ops pci_bios_acces * Try to find PCI BIOS. */ -static struct pci_raw_ops * __devinit pci_find_bios(void) +static const struct pci_raw_ops * __devinit pci_find_bios(void) { union bios32 *check; unsigned char sum; @@ -369,10 +439,13 @@ struct irq_routing_table * pcibios_get_i DBG("PCI: Fetching IRQ routing table... "); __asm__("push %%es\n\t" + "movw %w8, %%ds\n\t" "push %%ds\n\t" "pop %%es\n\t" - "lcall *(%%esi); cld\n\t" + "lcall *%%ss:(%%esi); cld\n\t" "pop %%es\n\t" + "push %%ss\n\t" + "pop %%ds\n" "jc 1f\n\t" "xor %%ah, %%ah\n" "1:" @@ -383,7 +456,8 @@ struct irq_routing_table * pcibios_get_i "1" (0), "D" ((long) &opt), "S" (&pci_indirect), - "m" (opt) + "m" (opt), + "r" (__PCIBIOS_DS) : "memory"); DBG("OK ret=%d, size=%d, map=%x\n", ret, opt.size, map); if (ret & 0xff00) @@ -407,7 +481,10 @@ int pcibios_set_irq_routing(struct pci_d { int ret; - __asm__("lcall *(%%esi); cld\n\t" + __asm__("movw %w5, %%ds\n\t" + "lcall *%%ss:(%%esi); cld\n\t" + "push %%ss\n\t" + "pop %%ds\n" "jc 1f\n\t" "xor %%ah, %%ah\n" "1:" @@ -415,7 +492,8 @@ int pcibios_set_irq_routing(struct pci_d : "0" (PCIBIOS_SET_PCI_HW_INT), "b" ((dev->bus->number << 8) | dev->devfn), "c" ((irq << 8) | (pin + 10)), - "S" (&pci_indirect)); + "S" (&pci_indirect), + "r" (__PCIBIOS_DS)); return !(ret & 0xff00); } EXPORT_SYMBOL(pcibios_set_irq_routing); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/power/cpu.c linux-2.6.36.4-pax/arch/x86/power/cpu.c --- linux-2.6.36.4/arch/x86/power/cpu.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/power/cpu.c 2010-10-27 22:58:07.000000000 +0200 @@ -130,7 +130,7 @@ static void do_fpu_end(void) static void fix_processor_context(void) { int cpu = smp_processor_id(); - struct tss_struct *t = &per_cpu(init_tss, cpu); + struct tss_struct *t = init_tss + cpu; set_tss_desc(cpu, t); /* * This just modifies memory; should not be @@ -140,7 +140,9 @@ static void fix_processor_context(void) */ #ifdef CONFIG_X86_64 + pax_open_kernel(); get_cpu_gdt_table(cpu)[GDT_ENTRY_TSS].type = 9; + pax_close_kernel(); syscall_init(); /* This sets MSR_*STAR and related */ #endif Binary files linux-2.6.36.4/arch/x86/tools/test_get_len and linux-2.6.36.4-pax/arch/x86/tools/test_get_len differ diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/vdso/Makefile linux-2.6.36.4-pax/arch/x86/vdso/Makefile --- linux-2.6.36.4/arch/x86/vdso/Makefile 2011-01-12 15:14:10.000000000 +0100 +++ linux-2.6.36.4-pax/arch/x86/vdso/Makefile 2011-01-12 15:14:27.000000000 +0100 @@ -123,7 +123,7 @@ quiet_cmd_vdso = VDSO $@ -Wl,-T,$(filter %.lds,$^) $(filter %.o,$^) && \ sh $(srctree)/$(src)/checkundef.sh '$(NM)' '$@' -VDSO_LDFLAGS = -fPIC -shared $(call cc-ldoption, -Wl$(comma)--hash-style=sysv) +VDSO_LDFLAGS = -fPIC -shared --no-undefined $(call cc-ldoption, -Wl$(comma)--hash-style=sysv) GCOV_PROFILE := n # diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/vdso/vclock_gettime.c linux-2.6.36.4-pax/arch/x86/vdso/vclock_gettime.c --- linux-2.6.36.4/arch/x86/vdso/vclock_gettime.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/vdso/vclock_gettime.c 2010-10-27 22:58:07.000000000 +0200 @@ -22,24 +22,48 @@ #include #include #include +#include #include "vextern.h" #define gtod vdso_vsyscall_gtod_data +notrace noinline long __vdso_fallback_time(long *t) +{ + long secs; + asm volatile("syscall" + : "=a" (secs) + : "0" (__NR_time),"D" (t) : "r11", "cx", "memory"); + return secs; +} + notrace static long vdso_fallback_gettime(long clock, struct timespec *ts) { long ret; asm("syscall" : "=a" (ret) : - "0" (__NR_clock_gettime),"D" (clock), "S" (ts) : "memory"); + "0" (__NR_clock_gettime),"D" (clock), "S" (ts) : "r11", "cx", "memory"); return ret; } +notrace static inline cycle_t __vdso_vread_hpet(void) +{ + return readl((const void __iomem *)fix_to_virt(VSYSCALL_HPET) + 0xf0); +} + +notrace static inline cycle_t __vdso_vread_tsc(void) +{ + cycle_t ret = (cycle_t)vget_cycles(); + + return ret >= gtod->clock.cycle_last ? ret : gtod->clock.cycle_last; +} + notrace static inline long vgetns(void) { long v; - cycles_t (*vread)(void); - vread = gtod->clock.vread; - v = (vread() - gtod->clock.cycle_last) & gtod->clock.mask; + if (gtod->clock.name[0] == 't' && gtod->clock.name[1] == 's' && gtod->clock.name[2] == 'c' && !gtod->clock.name[3]) + v = __vdso_vread_tsc(); + else + v = __vdso_vread_hpet(); + v = (v - gtod->clock.cycle_last) & gtod->clock.mask; return (v * gtod->clock.mult) >> gtod->clock.shift; } @@ -113,7 +137,9 @@ notrace static noinline int do_monotonic notrace int __vdso_clock_gettime(clockid_t clock, struct timespec *ts) { - if (likely(gtod->sysctl_enabled)) + if (likely(gtod->sysctl_enabled && + ((gtod->clock.name[0] == 'h' && gtod->clock.name[1] == 'p' && gtod->clock.name[2] == 'e' && gtod->clock.name[3] == 't' && !gtod->clock.name[4]) || + (gtod->clock.name[0] == 't' && gtod->clock.name[1] == 's' && gtod->clock.name[2] == 'c' && !gtod->clock.name[3])))) switch (clock) { case CLOCK_REALTIME: if (likely(gtod->clock.vread)) @@ -133,10 +159,20 @@ notrace int __vdso_clock_gettime(clockid int clock_gettime(clockid_t, struct timespec *) __attribute__((weak, alias("__vdso_clock_gettime"))); -notrace int __vdso_gettimeofday(struct timeval *tv, struct timezone *tz) +notrace noinline int __vdso_fallback_gettimeofday(struct timeval *tv, struct timezone *tz) { long ret; - if (likely(gtod->sysctl_enabled && gtod->clock.vread)) { + asm("syscall" : "=a" (ret) : + "0" (__NR_gettimeofday), "D" (tv), "S" (tz) : "r11", "cx", "memory"); + return ret; +} + +notrace int __vdso_gettimeofday(struct timeval *tv, struct timezone *tz) +{ + if (likely(gtod->sysctl_enabled && + ((gtod->clock.name[0] == 'h' && gtod->clock.name[1] == 'p' && gtod->clock.name[2] == 'e' && gtod->clock.name[3] == 't' && !gtod->clock.name[4]) || + (gtod->clock.name[0] == 't' && gtod->clock.name[1] == 's' && gtod->clock.name[2] == 'c' && !gtod->clock.name[3])))) + { if (likely(tv != NULL)) { BUILD_BUG_ON(offsetof(struct timeval, tv_usec) != offsetof(struct timespec, tv_nsec) || @@ -151,9 +187,7 @@ notrace int __vdso_gettimeofday(struct t } return 0; } - asm("syscall" : "=a" (ret) : - "0" (__NR_gettimeofday), "D" (tv), "S" (tz) : "memory"); - return ret; + return __vdso_fallback_gettimeofday(tv, tz); } int gettimeofday(struct timeval *, struct timezone *) __attribute__((weak, alias("__vdso_gettimeofday"))); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/vdso/vdso.lds.S linux-2.6.36.4-pax/arch/x86/vdso/vdso.lds.S --- linux-2.6.36.4/arch/x86/vdso/vdso.lds.S 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/vdso/vdso.lds.S 2010-10-27 22:58:07.000000000 +0200 @@ -35,3 +35,9 @@ VDSO64_PRELINK = VDSO_PRELINK; #define VEXTERN(x) VDSO64_ ## x = vdso_ ## x; #include "vextern.h" #undef VEXTERN + +#define VEXTERN(x) VDSO64_ ## x = __vdso_ ## x; +VEXTERN(fallback_gettimeofday) +VEXTERN(fallback_time) +VEXTERN(getcpu) +#undef VEXTERN diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/vdso/vdso32-setup.c linux-2.6.36.4-pax/arch/x86/vdso/vdso32-setup.c --- linux-2.6.36.4/arch/x86/vdso/vdso32-setup.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/vdso/vdso32-setup.c 2010-10-27 22:58:07.000000000 +0200 @@ -25,6 +25,7 @@ #include #include #include +#include enum { VDSO_DISABLED = 0, @@ -226,7 +227,7 @@ static inline void map_compat_vdso(int m void enable_sep_cpu(void) { int cpu = get_cpu(); - struct tss_struct *tss = &per_cpu(init_tss, cpu); + struct tss_struct *tss = init_tss + cpu; if (!boot_cpu_has(X86_FEATURE_SEP)) { put_cpu(); @@ -249,7 +250,7 @@ static int __init gate_vma_init(void) gate_vma.vm_start = FIXADDR_USER_START; gate_vma.vm_end = FIXADDR_USER_END; gate_vma.vm_flags = VM_READ | VM_MAYREAD | VM_EXEC | VM_MAYEXEC; - gate_vma.vm_page_prot = __P101; + gate_vma.vm_page_prot = vm_get_page_prot(gate_vma.vm_flags); /* * Make sure the vDSO gets into every core dump. * Dumping its contents makes post-mortem fully interpretable later @@ -331,14 +332,14 @@ int arch_setup_additional_pages(struct l if (compat) addr = VDSO_HIGH_BASE; else { - addr = get_unmapped_area(NULL, 0, PAGE_SIZE, 0, 0); + addr = get_unmapped_area(NULL, 0, PAGE_SIZE, 0, MAP_EXECUTABLE); if (IS_ERR_VALUE(addr)) { ret = addr; goto up_fail; } } - current->mm->context.vdso = (void *)addr; + current->mm->context.vdso = addr; if (compat_uses_vma || !compat) { /* @@ -361,11 +362,11 @@ int arch_setup_additional_pages(struct l } current_thread_info()->sysenter_return = - VDSO32_SYMBOL(addr, SYSENTER_RETURN); + (__force void __user *)VDSO32_SYMBOL(addr, SYSENTER_RETURN); up_fail: if (ret) - current->mm->context.vdso = NULL; + current->mm->context.vdso = 0; up_write(&mm->mmap_sem); @@ -412,8 +413,14 @@ __initcall(ia32_binfmt_init); const char *arch_vma_name(struct vm_area_struct *vma) { - if (vma->vm_mm && vma->vm_start == (long)vma->vm_mm->context.vdso) + if (vma->vm_mm && vma->vm_start == vma->vm_mm->context.vdso) return "[vdso]"; + +#ifdef CONFIG_PAX_SEGMEXEC + if (vma->vm_mm && vma->vm_mirror && vma->vm_mirror->vm_start == vma->vm_mm->context.vdso) + return "[vdso]"; +#endif + return NULL; } @@ -422,7 +429,7 @@ struct vm_area_struct *get_gate_vma(stru struct mm_struct *mm = tsk->mm; /* Check to see if this task was created in compat vdso mode */ - if (mm && mm->context.vdso == (void *)VDSO_HIGH_BASE) + if (mm && mm->context.vdso == VDSO_HIGH_BASE) return &gate_vma; return NULL; } diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/vdso/vextern.h linux-2.6.36.4-pax/arch/x86/vdso/vextern.h --- linux-2.6.36.4/arch/x86/vdso/vextern.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/vdso/vextern.h 2010-10-27 22:58:07.000000000 +0200 @@ -11,6 +11,5 @@ put into vextern.h and be referenced as a pointer with vdso prefix. The main kernel later fills in the values. */ -VEXTERN(jiffies) VEXTERN(vgetcpu_mode) VEXTERN(vsyscall_gtod_data) diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/vdso/vma.c linux-2.6.36.4-pax/arch/x86/vdso/vma.c --- linux-2.6.36.4/arch/x86/vdso/vma.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/vdso/vma.c 2010-10-27 22:58:07.000000000 +0200 @@ -58,7 +58,7 @@ static int __init init_vdso_vars(void) if (!vbase) goto oom; - if (memcmp(vbase, "\177ELF", 4)) { + if (memcmp(vbase, ELFMAG, SELFMAG)) { printk("VDSO: I'm broken; not ELF\n"); vdso_enabled = 0; } @@ -118,7 +118,7 @@ int arch_setup_additional_pages(struct l goto up_fail; } - current->mm->context.vdso = (void *)addr; + current->mm->context.vdso = addr; ret = install_special_mapping(mm, addr, vdso_size, VM_READ|VM_EXEC| @@ -126,7 +126,7 @@ int arch_setup_additional_pages(struct l VM_ALWAYSDUMP, vdso_pages); if (ret) { - current->mm->context.vdso = NULL; + current->mm->context.vdso = 0; goto up_fail; } @@ -134,10 +134,3 @@ up_fail: up_write(&mm->mmap_sem); return ret; } - -static __init int vdso_setup(char *s) -{ - vdso_enabled = simple_strtoul(s, NULL, 0); - return 0; -} -__setup("vdso=", vdso_setup); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/xen/enlighten.c linux-2.6.36.4-pax/arch/x86/xen/enlighten.c --- linux-2.6.36.4/arch/x86/xen/enlighten.c 2010-12-16 12:42:50.000000000 +0100 +++ linux-2.6.36.4-pax/arch/x86/xen/enlighten.c 2010-12-16 12:43:29.000000000 +0100 @@ -79,8 +79,6 @@ EXPORT_SYMBOL_GPL(xen_start_info); struct shared_info xen_dummy_shared_info; -void *xen_initial_gdt; - RESERVE_BRK(shared_info_page_brk, PAGE_SIZE); __read_mostly int xen_have_vector_callback; EXPORT_SYMBOL_GPL(xen_have_vector_callback); @@ -573,7 +571,7 @@ static void xen_write_idt_entry(gate_des preempt_disable(); - start = __get_cpu_var(idt_desc).address; + start = (unsigned long)__get_cpu_var(idt_desc).address; end = start + __get_cpu_var(idt_desc).size + 1; xen_mc_flush(); @@ -1126,7 +1124,17 @@ asmlinkage void __init xen_start_kernel( __userpte_alloc_gfp &= ~__GFP_HIGHMEM; /* Work out if we support NX */ - x86_configure_nx(); +#if defined(CONFIG_X86_64) || defined(CONFIG_X86_PAE) + if ((cpuid_eax(0x80000000) & 0xffff0000) == 0x80000000 && + (cpuid_edx(0x80000001) & (1U << (X86_FEATURE_NX & 31)))) { + unsigned l, h; + + __supported_pte_mask |= _PAGE_NX; + rdmsr(MSR_EFER, l, h); + l |= EFER_NX; + wrmsr(MSR_EFER, l, h); + } +#endif xen_setup_features(); @@ -1157,13 +1165,6 @@ asmlinkage void __init xen_start_kernel( machine_ops = xen_machine_ops; - /* - * The only reliable way to retain the initial address of the - * percpu gdt_page is to remember it here, so we can go and - * mark it RW later, when the initial percpu area is freed. - */ - xen_initial_gdt = &per_cpu(gdt_page, 0); - xen_smp_init(); pgd = (pgd_t *)xen_start_info->pt_base; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/xen/mmu.c linux-2.6.36.4-pax/arch/x86/xen/mmu.c --- linux-2.6.36.4/arch/x86/xen/mmu.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/xen/mmu.c 2010-10-27 22:58:07.000000000 +0200 @@ -1773,6 +1773,8 @@ __init pgd_t *xen_setup_kernel_pagetable convert_pfn_mfn(init_level4_pgt); convert_pfn_mfn(level3_ident_pgt); convert_pfn_mfn(level3_kernel_pgt); + convert_pfn_mfn(level3_vmalloc_pgt); + convert_pfn_mfn(level3_vmemmap_pgt); l3 = m2v(pgd[pgd_index(__START_KERNEL_map)].pgd); l2 = m2v(l3[pud_index(__START_KERNEL_map)].pud); @@ -1791,7 +1793,10 @@ __init pgd_t *xen_setup_kernel_pagetable set_page_prot(init_level4_pgt, PAGE_KERNEL_RO); set_page_prot(level3_ident_pgt, PAGE_KERNEL_RO); set_page_prot(level3_kernel_pgt, PAGE_KERNEL_RO); + set_page_prot(level3_vmalloc_pgt, PAGE_KERNEL_RO); + set_page_prot(level3_vmemmap_pgt, PAGE_KERNEL_RO); set_page_prot(level3_user_vsyscall, PAGE_KERNEL_RO); + set_page_prot(level2_vmemmap_pgt, PAGE_KERNEL_RO); set_page_prot(level2_kernel_pgt, PAGE_KERNEL_RO); set_page_prot(level2_fixmap_pgt, PAGE_KERNEL_RO); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/xen/pci-swiotlb-xen.c linux-2.6.36.4-pax/arch/x86/xen/pci-swiotlb-xen.c --- linux-2.6.36.4/arch/x86/xen/pci-swiotlb-xen.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/xen/pci-swiotlb-xen.c 2010-10-27 22:58:44.000000000 +0200 @@ -8,7 +8,7 @@ int xen_swiotlb __read_mostly; -static struct dma_map_ops xen_swiotlb_dma_ops = { +static const struct dma_map_ops xen_swiotlb_dma_ops = { .mapping_error = xen_swiotlb_dma_mapping_error, .alloc_coherent = xen_swiotlb_alloc_coherent, .free_coherent = xen_swiotlb_free_coherent, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/xen/smp.c linux-2.6.36.4-pax/arch/x86/xen/smp.c --- linux-2.6.36.4/arch/x86/xen/smp.c 2010-12-14 21:09:00.000000000 +0100 +++ linux-2.6.36.4-pax/arch/x86/xen/smp.c 2010-12-15 11:08:54.000000000 +0100 @@ -169,11 +169,6 @@ static void __init xen_smp_prepare_boot_ { BUG_ON(smp_processor_id() != 0); native_smp_prepare_boot_cpu(); - - /* We've switched to the "real" per-cpu gdt, so make sure the - old memory can be recycled */ - make_lowmem_page_readwrite(xen_initial_gdt); - xen_setup_vcpu_info_placement(); } @@ -233,12 +228,12 @@ cpu_initialize_context(unsigned int cpu, gdt = get_cpu_gdt_table(cpu); ctxt->flags = VGCF_IN_KERNEL; - ctxt->user_regs.ds = __USER_DS; - ctxt->user_regs.es = __USER_DS; + ctxt->user_regs.ds = __KERNEL_DS; + ctxt->user_regs.es = __KERNEL_DS; ctxt->user_regs.ss = __KERNEL_DS; #ifdef CONFIG_X86_32 ctxt->user_regs.fs = __KERNEL_PERCPU; - ctxt->user_regs.gs = __KERNEL_STACK_CANARY; + savesegment(gs, ctxt->user_regs.gs); #else ctxt->gs_base_kernel = per_cpu_offset(cpu); #endif diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/xen/xen-head.S linux-2.6.36.4-pax/arch/x86/xen/xen-head.S --- linux-2.6.36.4/arch/x86/xen/xen-head.S 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/xen/xen-head.S 2010-10-27 22:58:07.000000000 +0200 @@ -19,6 +19,17 @@ ENTRY(startup_xen) #ifdef CONFIG_X86_32 mov %esi,xen_start_info mov $init_thread_union+THREAD_SIZE,%esp +#ifdef CONFIG_SMP + movl $cpu_gdt_table,%edi + movl $__per_cpu_load,%eax + movw %ax,__KERNEL_PERCPU + 2(%edi) + rorl $16,%eax + movb %al,__KERNEL_PERCPU + 4(%edi) + movb %ah,__KERNEL_PERCPU + 7(%edi) + movl $__per_cpu_end - 1,%eax + subl $__per_cpu_start,%eax + movw %ax,__KERNEL_PERCPU + 0(%edi) +#endif #else mov %rsi,xen_start_info mov $init_thread_union+THREAD_SIZE,%rsp diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/arch/x86/xen/xen-ops.h linux-2.6.36.4-pax/arch/x86/xen/xen-ops.h --- linux-2.6.36.4/arch/x86/xen/xen-ops.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/arch/x86/xen/xen-ops.h 2010-10-27 22:58:07.000000000 +0200 @@ -10,8 +10,6 @@ extern const char xen_hypervisor_callback[]; extern const char xen_failsafe_callback[]; -extern void *xen_initial_gdt; - struct trap_info; void xen_copy_trap_info(struct trap_info *traps); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/block/blk-iopoll.c linux-2.6.36.4-pax/block/blk-iopoll.c --- linux-2.6.36.4/block/blk-iopoll.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/block/blk-iopoll.c 2010-10-27 22:58:07.000000000 +0200 @@ -77,7 +77,7 @@ void blk_iopoll_complete(struct blk_iopo } EXPORT_SYMBOL(blk_iopoll_complete); -static void blk_iopoll_softirq(struct softirq_action *h) +static void blk_iopoll_softirq(void) { struct list_head *list = &__get_cpu_var(blk_cpu_iopoll); int rearm = 0, budget = blk_iopoll_budget; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/block/blk-map.c linux-2.6.36.4-pax/block/blk-map.c --- linux-2.6.36.4/block/blk-map.c 2010-12-16 12:42:50.000000000 +0100 +++ linux-2.6.36.4-pax/block/blk-map.c 2010-12-16 12:43:29.000000000 +0100 @@ -54,7 +54,7 @@ static int __blk_rq_map_user(struct requ * direct dma. else, set up kernel bounce buffers */ uaddr = (unsigned long) ubuf; - if (blk_rq_aligned(q, ubuf, len) && !map_data) + if (blk_rq_aligned(q, (__force void *)ubuf, len) && !map_data) bio = bio_map_user(q, NULL, uaddr, len, reading, gfp_mask); else bio = bio_copy_user(q, map_data, uaddr, len, reading, gfp_mask); @@ -299,7 +299,7 @@ int blk_rq_map_kern(struct request_queue if (!len || !kbuf) return -EINVAL; - do_copy = !blk_rq_aligned(q, kbuf, len) || object_is_on_stack(kbuf); + do_copy = !blk_rq_aligned(q, kbuf, len) || object_starts_on_stack(kbuf); if (do_copy) bio = bio_copy_kern(q, kbuf, len, gfp_mask, reading); else diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/block/blk-softirq.c linux-2.6.36.4-pax/block/blk-softirq.c --- linux-2.6.36.4/block/blk-softirq.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/block/blk-softirq.c 2010-10-27 22:58:07.000000000 +0200 @@ -17,7 +17,7 @@ static DEFINE_PER_CPU(struct list_head, * Softirq action handler - move entries to local list and loop over them * while passing them to the queue registered handler. */ -static void blk_done_softirq(struct softirq_action *h) +static void blk_done_softirq(void) { struct list_head *cpu_list, local_list; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/crypto/lrw.c linux-2.6.36.4-pax/crypto/lrw.c --- linux-2.6.36.4/crypto/lrw.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/crypto/lrw.c 2010-10-27 22:58:07.000000000 +0200 @@ -60,7 +60,7 @@ static int setkey(struct crypto_tfm *par struct priv *ctx = crypto_tfm_ctx(parent); struct crypto_cipher *child = ctx->child; int err, i; - be128 tmp = { 0 }; + be128 tmp = { 0, 0 }; int bsize = crypto_cipher_blocksize(child); crypto_cipher_clear_flags(child, CRYPTO_TFM_REQ_MASK); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/acpi/battery.c linux-2.6.36.4-pax/drivers/acpi/battery.c --- linux-2.6.36.4/drivers/acpi/battery.c 2010-12-16 12:42:50.000000000 +0100 +++ linux-2.6.36.4-pax/drivers/acpi/battery.c 2010-12-16 12:43:29.000000000 +0100 @@ -845,7 +845,7 @@ DECLARE_FILE_FUNCTIONS(alarm); } static struct battery_file { - struct file_operations ops; + const struct file_operations ops; mode_t mode; const char *name; } acpi_battery_file[] = { diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/acpi/blacklist.c linux-2.6.36.4-pax/drivers/acpi/blacklist.c --- linux-2.6.36.4/drivers/acpi/blacklist.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/acpi/blacklist.c 2010-10-27 22:58:07.000000000 +0200 @@ -73,7 +73,7 @@ static struct acpi_blacklist_item acpi_b {"IBM ", "TP600E ", 0x00000105, ACPI_SIG_DSDT, less_than_or_equal, "Incorrect _ADR", 1}, - {""} + {"", "", 0, NULL, all_versions, NULL, 0} }; #if CONFIG_ACPI_BLACKLIST_YEAR diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/acpi/dock.c linux-2.6.36.4-pax/drivers/acpi/dock.c --- linux-2.6.36.4/drivers/acpi/dock.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/acpi/dock.c 2010-10-27 22:58:44.000000000 +0200 @@ -77,7 +77,7 @@ struct dock_dependent_device { struct list_head list; struct list_head hotplug_list; acpi_handle handle; - struct acpi_dock_ops *ops; + const struct acpi_dock_ops *ops; void *context; }; @@ -589,7 +589,7 @@ EXPORT_SYMBOL_GPL(unregister_dock_notifi * the dock driver after _DCK is executed. */ int -register_hotplug_dock_device(acpi_handle handle, struct acpi_dock_ops *ops, +register_hotplug_dock_device(acpi_handle handle, const struct acpi_dock_ops *ops, void *context) { struct dock_dependent_device *dd; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/acpi/osl.c linux-2.6.36.4-pax/drivers/acpi/osl.c --- linux-2.6.36.4/drivers/acpi/osl.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/acpi/osl.c 2010-10-27 22:58:07.000000000 +0200 @@ -497,6 +497,8 @@ acpi_os_read_memory(acpi_physical_addres void __iomem *virt_addr; virt_addr = ioremap(phys_addr, width); + if (!virt_addr) + return AE_NO_MEMORY; if (!value) value = &dummy; @@ -525,6 +527,8 @@ acpi_os_write_memory(acpi_physical_addre void __iomem *virt_addr; virt_addr = ioremap(phys_addr, width); + if (!virt_addr) + return AE_NO_MEMORY; switch (width) { case 8: diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/acpi/power_meter.c linux-2.6.36.4-pax/drivers/acpi/power_meter.c --- linux-2.6.36.4/drivers/acpi/power_meter.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/acpi/power_meter.c 2010-10-27 22:58:07.000000000 +0200 @@ -316,8 +316,6 @@ static ssize_t set_trip(struct device *d return res; temp /= 1000; - if (temp < 0) - return -EINVAL; mutex_lock(&resource->lock); resource->trip[attr->index - 7] = temp; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/acpi/proc.c linux-2.6.36.4-pax/drivers/acpi/proc.c --- linux-2.6.36.4/drivers/acpi/proc.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/acpi/proc.c 2010-10-27 22:58:07.000000000 +0200 @@ -338,20 +338,15 @@ acpi_system_write_wakeup_device(struct f size_t count, loff_t * ppos) { struct list_head *node, *next; - char strbuf[5]; - char str[5] = ""; - unsigned int len = count; + char strbuf[5] = {0}; struct acpi_device *found_dev = NULL; - if (len > 4) - len = 4; - if (len < 0) - return -EFAULT; + if (count > 4) + count = 4; - if (copy_from_user(strbuf, buffer, len)) + if (copy_from_user(strbuf, buffer, count)) return -EFAULT; - strbuf[len] = '\0'; - sscanf(strbuf, "%s", str); + strbuf[count] = '\0'; mutex_lock(&acpi_device_lock); list_for_each_safe(node, next, &acpi_wakeup_device_list) { @@ -360,7 +355,7 @@ acpi_system_write_wakeup_device(struct f if (!dev->wakeup.flags.valid) continue; - if (!strncmp(dev->pnp.bus_id, str, 4)) { + if (!strncmp(dev->pnp.bus_id, strbuf, 4)) { dev->wakeup.state.enabled = dev->wakeup.state.enabled ? 0 : 1; found_dev = dev; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/acpi/processor_driver.c linux-2.6.36.4-pax/drivers/acpi/processor_driver.c --- linux-2.6.36.4/drivers/acpi/processor_driver.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/acpi/processor_driver.c 2010-10-27 22:58:07.000000000 +0200 @@ -507,7 +507,7 @@ static int __cpuinit acpi_processor_add( return 0; #endif - BUG_ON((pr->id >= nr_cpu_ids) || (pr->id < 0)); + BUG_ON(pr->id >= nr_cpu_ids); /* * Buggy BIOS check diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/acpi/processor_idle.c linux-2.6.36.4-pax/drivers/acpi/processor_idle.c --- linux-2.6.36.4/drivers/acpi/processor_idle.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/acpi/processor_idle.c 2010-10-27 22:58:07.000000000 +0200 @@ -115,7 +115,7 @@ static struct dmi_system_id __cpuinitdat DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer Inc."), DMI_MATCH(DMI_PRODUCT_NAME,"L8400B series Notebook PC")}, (void *)1}, - {}, + { NULL, NULL, {DMI_MATCH(DMI_NONE, {0})}, NULL}, }; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/acpi/sleep.c linux-2.6.36.4-pax/drivers/acpi/sleep.c --- linux-2.6.36.4/drivers/acpi/sleep.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/acpi/sleep.c 2010-10-27 22:58:44.000000000 +0200 @@ -319,7 +319,7 @@ static int acpi_suspend_state_valid(susp } } -static struct platform_suspend_ops acpi_suspend_ops = { +static const struct platform_suspend_ops acpi_suspend_ops = { .valid = acpi_suspend_state_valid, .begin = acpi_suspend_begin, .prepare_late = acpi_pm_prepare, @@ -347,7 +347,7 @@ static int acpi_suspend_begin_old(suspen * The following callbacks are used if the pre-ACPI 2.0 suspend ordering has * been requested. */ -static struct platform_suspend_ops acpi_suspend_ops_old = { +static const struct platform_suspend_ops acpi_suspend_ops_old = { .valid = acpi_suspend_state_valid, .begin = acpi_suspend_begin_old, .prepare_late = acpi_pm_pre_suspend, @@ -490,7 +490,7 @@ static void acpi_pm_thaw(void) acpi_enable_all_runtime_gpes(); } -static struct platform_hibernation_ops acpi_hibernation_ops = { +static const struct platform_hibernation_ops acpi_hibernation_ops = { .begin = acpi_hibernation_begin, .end = acpi_pm_end, .pre_snapshot = acpi_pm_prepare, @@ -533,7 +533,7 @@ static int acpi_hibernation_begin_old(vo * The following callbacks are used if the pre-ACPI 2.0 suspend ordering has * been requested. */ -static struct platform_hibernation_ops acpi_hibernation_ops_old = { +static const struct platform_hibernation_ops acpi_hibernation_ops_old = { .begin = acpi_hibernation_begin_old, .end = acpi_pm_end, .pre_snapshot = acpi_pm_pre_suspend, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/acpi/video.c linux-2.6.36.4-pax/drivers/acpi/video.c --- linux-2.6.36.4/drivers/acpi/video.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/acpi/video.c 2010-10-27 22:58:44.000000000 +0200 @@ -367,7 +367,7 @@ static int acpi_video_set_brightness(str vd->brightness->levels[request_level]); } -static struct backlight_ops acpi_backlight_ops = { +static const struct backlight_ops acpi_backlight_ops = { .get_brightness = acpi_video_get_brightness, .update_status = acpi_video_set_brightness, }; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/ata/ahci.c linux-2.6.36.4-pax/drivers/ata/ahci.c --- linux-2.6.36.4/drivers/ata/ahci.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/ata/ahci.c 2010-10-27 22:58:44.000000000 +0200 @@ -94,17 +94,17 @@ static struct scsi_host_template ahci_sh AHCI_SHT("ahci"), }; -static struct ata_port_operations ahci_vt8251_ops = { +static const struct ata_port_operations ahci_vt8251_ops = { .inherits = &ahci_ops, .hardreset = ahci_vt8251_hardreset, }; -static struct ata_port_operations ahci_p5wdh_ops = { +static const struct ata_port_operations ahci_p5wdh_ops = { .inherits = &ahci_ops, .hardreset = ahci_p5wdh_hardreset, }; -static struct ata_port_operations ahci_sb600_ops = { +static const struct ata_port_operations ahci_sb600_ops = { .inherits = &ahci_ops, .softreset = ahci_sb600_softreset, .pmp_softreset = ahci_sb600_softreset, @@ -388,7 +388,7 @@ static const struct pci_device_id ahci_p { PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_STORAGE_SATA_AHCI, 0xffffff, board_ahci }, - { } /* terminate list */ + { 0, 0, 0, 0, 0, 0, 0 } /* terminate list */ }; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/ata/ahci.h linux-2.6.36.4-pax/drivers/ata/ahci.h --- linux-2.6.36.4/drivers/ata/ahci.h 2010-12-14 21:09:00.000000000 +0100 +++ linux-2.6.36.4-pax/drivers/ata/ahci.h 2010-12-14 21:09:08.000000000 +0100 @@ -310,7 +310,7 @@ extern struct device_attribute *ahci_sde .shost_attrs = ahci_shost_attrs, \ .sdev_attrs = ahci_sdev_attrs -extern struct ata_port_operations ahci_ops; +extern const struct ata_port_operations ahci_ops; void ahci_save_initial_config(struct device *dev, struct ahci_host_priv *hpriv, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/ata/ata_generic.c linux-2.6.36.4-pax/drivers/ata/ata_generic.c --- linux-2.6.36.4/drivers/ata/ata_generic.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/ata/ata_generic.c 2010-10-27 22:58:44.000000000 +0200 @@ -100,7 +100,7 @@ static struct scsi_host_template generic ATA_BMDMA_SHT(DRV_NAME), }; -static struct ata_port_operations generic_port_ops = { +static const struct ata_port_operations generic_port_ops = { .inherits = &ata_bmdma_port_ops, .cable_detect = ata_cable_unknown, .set_mode = generic_set_mode, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/ata/ata_piix.c linux-2.6.36.4-pax/drivers/ata/ata_piix.c --- linux-2.6.36.4/drivers/ata/ata_piix.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/ata/ata_piix.c 2010-10-27 22:58:44.000000000 +0200 @@ -306,7 +306,7 @@ static const struct pci_device_id piix_p { 0x8086, 0x1d00, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata }, /* SATA Controller IDE (PBG) */ { 0x8086, 0x1d08, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata }, - { } /* terminate list */ + { 0, 0, 0, 0, 0, 0, 0 } /* terminate list */ }; static struct pci_driver piix_pci_driver = { @@ -324,12 +324,12 @@ static struct scsi_host_template piix_sh ATA_BMDMA_SHT(DRV_NAME), }; -static struct ata_port_operations piix_sata_ops = { +static const struct ata_port_operations piix_sata_ops = { .inherits = &ata_bmdma32_port_ops, .sff_irq_check = piix_irq_check, }; -static struct ata_port_operations piix_pata_ops = { +static const struct ata_port_operations piix_pata_ops = { .inherits = &piix_sata_ops, .cable_detect = ata_cable_40wire, .set_piomode = piix_set_piomode, @@ -337,18 +337,18 @@ static struct ata_port_operations piix_p .prereset = piix_pata_prereset, }; -static struct ata_port_operations piix_vmw_ops = { +static const struct ata_port_operations piix_vmw_ops = { .inherits = &piix_pata_ops, .bmdma_status = piix_vmw_bmdma_status, }; -static struct ata_port_operations ich_pata_ops = { +static const struct ata_port_operations ich_pata_ops = { .inherits = &piix_pata_ops, .cable_detect = ich_pata_cable_detect, .set_dmamode = ich_set_dmamode, }; -static struct ata_port_operations piix_sidpr_sata_ops = { +static const struct ata_port_operations piix_sidpr_sata_ops = { .inherits = &piix_sata_ops, .hardreset = sata_std_hardreset, .scr_read = piix_sidpr_scr_read, @@ -624,7 +624,7 @@ static const struct ich_laptop ich_lapto { 0x2653, 0x1043, 0x82D8 }, /* ICH6M on Asus Eee 701 */ { 0x27df, 0x104d, 0x900e }, /* ICH7 on Sony TZ-90 */ /* end marker */ - { 0, } + { 0, 0, 0 } }; /** @@ -1116,7 +1116,7 @@ static int piix_broken_suspend(void) }, }, - { } /* terminate list */ + { NULL, NULL, {DMI_MATCH(DMI_NONE, {0})}, NULL } /* terminate list */ }; static const char *oemstrs[] = { "Tecra M3,", diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/ata/libahci.c linux-2.6.36.4-pax/drivers/ata/libahci.c --- linux-2.6.36.4/drivers/ata/libahci.c 2010-12-14 21:09:00.000000000 +0100 +++ linux-2.6.36.4-pax/drivers/ata/libahci.c 2010-12-14 21:09:08.000000000 +0100 @@ -141,7 +141,7 @@ struct device_attribute *ahci_sdev_attrs }; EXPORT_SYMBOL_GPL(ahci_sdev_attrs); -struct ata_port_operations ahci_ops = { +const struct ata_port_operations ahci_ops = { .inherits = &sata_pmp_port_ops, .qc_defer = ahci_pmp_qc_defer, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/ata/libata-acpi.c linux-2.6.36.4-pax/drivers/ata/libata-acpi.c --- linux-2.6.36.4/drivers/ata/libata-acpi.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/ata/libata-acpi.c 2010-10-27 22:58:44.000000000 +0200 @@ -218,12 +218,12 @@ static void ata_acpi_dev_uevent(acpi_han ata_acpi_uevent(dev->link->ap, dev, event); } -static struct acpi_dock_ops ata_acpi_dev_dock_ops = { +static const struct acpi_dock_ops ata_acpi_dev_dock_ops = { .handler = ata_acpi_dev_notify_dock, .uevent = ata_acpi_dev_uevent, }; -static struct acpi_dock_ops ata_acpi_ap_dock_ops = { +static const struct acpi_dock_ops ata_acpi_ap_dock_ops = { .handler = ata_acpi_ap_notify_dock, .uevent = ata_acpi_ap_uevent, }; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/ata/libata-core.c linux-2.6.36.4-pax/drivers/ata/libata-core.c --- linux-2.6.36.4/drivers/ata/libata-core.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/ata/libata-core.c 2010-10-27 22:58:44.000000000 +0200 @@ -899,7 +899,7 @@ static const struct ata_xfer_ent { { ATA_SHIFT_PIO, ATA_NR_PIO_MODES, XFER_PIO_0 }, { ATA_SHIFT_MWDMA, ATA_NR_MWDMA_MODES, XFER_MW_DMA_0 }, { ATA_SHIFT_UDMA, ATA_NR_UDMA_MODES, XFER_UDMA_0 }, - { -1, }, + { -1, 0, 0 } }; /** @@ -3071,7 +3071,7 @@ static const struct ata_timing ata_timin { XFER_UDMA_5, 0, 0, 0, 0, 0, 0, 0, 0, 20 }, { XFER_UDMA_6, 0, 0, 0, 0, 0, 0, 0, 0, 15 }, - { 0xFF } + { 0xFF, 0, 0, 0, 0, 0, 0, 0, 0 } }; #define ENOUGH(v, unit) (((v)-1)/(unit)+1) @@ -4260,7 +4260,7 @@ static const struct ata_blacklist_entry { "PIONEER DVD-RW DVRTD08", "1.00", ATA_HORKAGE_NOSETXFER }, /* End Marker */ - { } + { NULL, NULL, 0 } }; /** @@ -4865,7 +4865,7 @@ void ata_qc_free(struct ata_queued_cmd * struct ata_port *ap; unsigned int tag; - WARN_ON_ONCE(qc == NULL); /* ata_qc_from_tag _might_ return NULL */ + BUG_ON(qc == NULL); /* ata_qc_from_tag _might_ return NULL */ ap = qc->ap; qc->flags = 0; @@ -4881,7 +4881,7 @@ void __ata_qc_complete(struct ata_queued struct ata_port *ap; struct ata_link *link; - WARN_ON_ONCE(qc == NULL); /* ata_qc_from_tag _might_ return NULL */ + BUG_ON(qc == NULL); /* ata_qc_from_tag _might_ return NULL */ WARN_ON_ONCE(!(qc->flags & ATA_QCFLAG_ACTIVE)); ap = qc->ap; link = qc->dev->link; @@ -5866,7 +5866,7 @@ static void ata_host_stop(struct device * LOCKING: * None. */ -static void ata_finalize_port_ops(struct ata_port_operations *ops) +static void ata_finalize_port_ops(const struct ata_port_operations *ops) { static DEFINE_SPINLOCK(lock); const struct ata_port_operations *cur; @@ -5878,6 +5878,7 @@ static void ata_finalize_port_ops(struct return; spin_lock(&lock); + pax_open_kernel(); for (cur = ops->inherits; cur; cur = cur->inherits) { void **inherit = (void **)cur; @@ -5891,8 +5892,9 @@ static void ata_finalize_port_ops(struct if (IS_ERR(*pp)) *pp = NULL; - ops->inherits = NULL; + ((struct ata_port_operations *)ops)->inherits = NULL; + pax_close_kernel(); spin_unlock(&lock); } @@ -5989,7 +5991,7 @@ int ata_host_start(struct ata_host *host */ /* KILLME - the only user left is ipr */ void ata_host_init(struct ata_host *host, struct device *dev, - unsigned long flags, struct ata_port_operations *ops) + unsigned long flags, const struct ata_port_operations *ops) { spin_lock_init(&host->lock); host->dev = dev; @@ -6630,7 +6632,7 @@ static void ata_dummy_error_handler(stru /* truly dummy */ } -struct ata_port_operations ata_dummy_port_ops = { +const struct ata_port_operations ata_dummy_port_ops = { .qc_prep = ata_noop_qc_prep, .qc_issue = ata_dummy_qc_issue, .error_handler = ata_dummy_error_handler, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/ata/libata-eh.c linux-2.6.36.4-pax/drivers/ata/libata-eh.c --- linux-2.6.36.4/drivers/ata/libata-eh.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/ata/libata-eh.c 2010-10-27 22:58:44.000000000 +0200 @@ -3685,7 +3685,7 @@ void ata_do_eh(struct ata_port *ap, ata_ */ void ata_std_error_handler(struct ata_port *ap) { - struct ata_port_operations *ops = ap->ops; + const struct ata_port_operations *ops = ap->ops; ata_reset_fn_t hardreset = ops->hardreset; /* ignore built-in hardreset if SCR access is not available */ diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/ata/libata-pmp.c linux-2.6.36.4-pax/drivers/ata/libata-pmp.c --- linux-2.6.36.4/drivers/ata/libata-pmp.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/ata/libata-pmp.c 2010-10-27 22:58:44.000000000 +0200 @@ -868,7 +868,7 @@ static int sata_pmp_handle_link_fail(str */ static int sata_pmp_eh_recover(struct ata_port *ap) { - struct ata_port_operations *ops = ap->ops; + const struct ata_port_operations *ops = ap->ops; int pmp_tries, link_tries[SATA_PMP_MAX_PORTS]; struct ata_link *pmp_link = &ap->link; struct ata_device *pmp_dev = pmp_link->device; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/ata/pata_acpi.c linux-2.6.36.4-pax/drivers/ata/pata_acpi.c --- linux-2.6.36.4/drivers/ata/pata_acpi.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/ata/pata_acpi.c 2010-10-27 22:58:44.000000000 +0200 @@ -216,7 +216,7 @@ static struct scsi_host_template pacpi_s ATA_BMDMA_SHT(DRV_NAME), }; -static struct ata_port_operations pacpi_ops = { +static const struct ata_port_operations pacpi_ops = { .inherits = &ata_bmdma_port_ops, .qc_issue = pacpi_qc_issue, .cable_detect = pacpi_cable_detect, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/ata/pata_ali.c linux-2.6.36.4-pax/drivers/ata/pata_ali.c --- linux-2.6.36.4/drivers/ata/pata_ali.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/ata/pata_ali.c 2010-10-27 22:58:44.000000000 +0200 @@ -363,7 +363,7 @@ static struct scsi_host_template ali_sht * Port operations for PIO only ALi */ -static struct ata_port_operations ali_early_port_ops = { +static const struct ata_port_operations ali_early_port_ops = { .inherits = &ata_sff_port_ops, .cable_detect = ata_cable_40wire, .set_piomode = ali_set_piomode, @@ -380,7 +380,7 @@ static const struct ata_port_operations * Port operations for DMA capable ALi without cable * detect */ -static struct ata_port_operations ali_20_port_ops = { +static const struct ata_port_operations ali_20_port_ops = { .inherits = &ali_dma_base_ops, .cable_detect = ata_cable_40wire, .mode_filter = ali_20_filter, @@ -391,7 +391,7 @@ static struct ata_port_operations ali_20 /* * Port operations for DMA capable ALi with cable detect */ -static struct ata_port_operations ali_c2_port_ops = { +static const struct ata_port_operations ali_c2_port_ops = { .inherits = &ali_dma_base_ops, .check_atapi_dma = ali_check_atapi_dma, .cable_detect = ali_c2_cable_detect, @@ -402,7 +402,7 @@ static struct ata_port_operations ali_c2 /* * Port operations for DMA capable ALi with cable detect */ -static struct ata_port_operations ali_c4_port_ops = { +static const struct ata_port_operations ali_c4_port_ops = { .inherits = &ali_dma_base_ops, .check_atapi_dma = ali_check_atapi_dma, .cable_detect = ali_c2_cable_detect, @@ -412,7 +412,7 @@ static struct ata_port_operations ali_c4 /* * Port operations for DMA capable ALi with cable detect and LBA48 */ -static struct ata_port_operations ali_c5_port_ops = { +static const struct ata_port_operations ali_c5_port_ops = { .inherits = &ali_dma_base_ops, .check_atapi_dma = ali_check_atapi_dma, .dev_config = ali_warn_atapi_dma, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/ata/pata_amd.c linux-2.6.36.4-pax/drivers/ata/pata_amd.c --- linux-2.6.36.4/drivers/ata/pata_amd.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/ata/pata_amd.c 2010-10-27 22:58:44.000000000 +0200 @@ -397,28 +397,28 @@ static const struct ata_port_operations .prereset = amd_pre_reset, }; -static struct ata_port_operations amd33_port_ops = { +static const struct ata_port_operations amd33_port_ops = { .inherits = &amd_base_port_ops, .cable_detect = ata_cable_40wire, .set_piomode = amd33_set_piomode, .set_dmamode = amd33_set_dmamode, }; -static struct ata_port_operations amd66_port_ops = { +static const struct ata_port_operations amd66_port_ops = { .inherits = &amd_base_port_ops, .cable_detect = ata_cable_unknown, .set_piomode = amd66_set_piomode, .set_dmamode = amd66_set_dmamode, }; -static struct ata_port_operations amd100_port_ops = { +static const struct ata_port_operations amd100_port_ops = { .inherits = &amd_base_port_ops, .cable_detect = ata_cable_unknown, .set_piomode = amd100_set_piomode, .set_dmamode = amd100_set_dmamode, }; -static struct ata_port_operations amd133_port_ops = { +static const struct ata_port_operations amd133_port_ops = { .inherits = &amd_base_port_ops, .cable_detect = amd_cable_detect, .set_piomode = amd133_set_piomode, @@ -433,13 +433,13 @@ static const struct ata_port_operations .host_stop = nv_host_stop, }; -static struct ata_port_operations nv100_port_ops = { +static const struct ata_port_operations nv100_port_ops = { .inherits = &nv_base_port_ops, .set_piomode = nv100_set_piomode, .set_dmamode = nv100_set_dmamode, }; -static struct ata_port_operations nv133_port_ops = { +static const struct ata_port_operations nv133_port_ops = { .inherits = &nv_base_port_ops, .set_piomode = nv133_set_piomode, .set_dmamode = nv133_set_dmamode, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/ata/pata_artop.c linux-2.6.36.4-pax/drivers/ata/pata_artop.c --- linux-2.6.36.4/drivers/ata/pata_artop.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/ata/pata_artop.c 2010-10-27 22:58:44.000000000 +0200 @@ -312,7 +312,7 @@ static struct scsi_host_template artop_s ATA_BMDMA_SHT(DRV_NAME), }; -static struct ata_port_operations artop6210_ops = { +static const struct ata_port_operations artop6210_ops = { .inherits = &ata_bmdma_port_ops, .cable_detect = ata_cable_40wire, .set_piomode = artop6210_set_piomode, @@ -321,7 +321,7 @@ static struct ata_port_operations artop6 .qc_defer = artop6210_qc_defer, }; -static struct ata_port_operations artop6260_ops = { +static const struct ata_port_operations artop6260_ops = { .inherits = &ata_bmdma_port_ops, .cable_detect = artop6260_cable_detect, .set_piomode = artop6260_set_piomode, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/ata/pata_at32.c linux-2.6.36.4-pax/drivers/ata/pata_at32.c --- linux-2.6.36.4/drivers/ata/pata_at32.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/ata/pata_at32.c 2010-10-27 22:58:44.000000000 +0200 @@ -173,7 +173,7 @@ static struct scsi_host_template at32_sh ATA_PIO_SHT(DRV_NAME), }; -static struct ata_port_operations at32_port_ops = { +static const struct ata_port_operations at32_port_ops = { .inherits = &ata_sff_port_ops, .cable_detect = ata_cable_40wire, .set_piomode = pata_at32_set_piomode, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/ata/pata_at91.c linux-2.6.36.4-pax/drivers/ata/pata_at91.c --- linux-2.6.36.4/drivers/ata/pata_at91.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/ata/pata_at91.c 2010-10-27 22:58:44.000000000 +0200 @@ -196,7 +196,7 @@ static struct scsi_host_template pata_at ATA_PIO_SHT(DRV_NAME), }; -static struct ata_port_operations pata_at91_port_ops = { +static const struct ata_port_operations pata_at91_port_ops = { .inherits = &ata_sff_port_ops, .sff_data_xfer = pata_at91_data_xfer_noirq, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/ata/pata_atiixp.c linux-2.6.36.4-pax/drivers/ata/pata_atiixp.c --- linux-2.6.36.4/drivers/ata/pata_atiixp.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/ata/pata_atiixp.c 2010-10-27 22:58:44.000000000 +0200 @@ -214,7 +214,7 @@ static struct scsi_host_template atiixp_ .sg_tablesize = LIBATA_DUMB_MAX_PRD, }; -static struct ata_port_operations atiixp_port_ops = { +static const struct ata_port_operations atiixp_port_ops = { .inherits = &ata_bmdma_port_ops, .qc_prep = ata_bmdma_dumb_qc_prep, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/ata/pata_atp867x.c linux-2.6.36.4-pax/drivers/ata/pata_atp867x.c --- linux-2.6.36.4/drivers/ata/pata_atp867x.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/ata/pata_atp867x.c 2010-10-27 22:58:44.000000000 +0200 @@ -275,7 +275,7 @@ static struct scsi_host_template atp867x ATA_BMDMA_SHT(DRV_NAME), }; -static struct ata_port_operations atp867x_ops = { +static const struct ata_port_operations atp867x_ops = { .inherits = &ata_bmdma_port_ops, .cable_detect = atp867x_cable_detect, .set_piomode = atp867x_set_piomode, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/ata/pata_bf54x.c linux-2.6.36.4-pax/drivers/ata/pata_bf54x.c --- linux-2.6.36.4/drivers/ata/pata_bf54x.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/ata/pata_bf54x.c 2010-10-27 22:58:44.000000000 +0200 @@ -1420,7 +1420,7 @@ static struct scsi_host_template bfin_sh .dma_boundary = ATA_DMA_BOUNDARY, }; -static struct ata_port_operations bfin_pata_ops = { +static const struct ata_port_operations bfin_pata_ops = { .inherits = &ata_bmdma_port_ops, .set_piomode = bfin_set_piomode, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/ata/pata_cmd640.c linux-2.6.36.4-pax/drivers/ata/pata_cmd640.c --- linux-2.6.36.4/drivers/ata/pata_cmd640.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/ata/pata_cmd640.c 2010-10-27 22:58:44.000000000 +0200 @@ -165,7 +165,7 @@ static struct scsi_host_template cmd640_ ATA_PIO_SHT(DRV_NAME), }; -static struct ata_port_operations cmd640_port_ops = { +static const struct ata_port_operations cmd640_port_ops = { .inherits = &ata_sff_port_ops, /* In theory xfer_noirq is not needed once we kill the prefetcher */ .sff_data_xfer = ata_sff_data_xfer_noirq, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/ata/pata_cmd64x.c linux-2.6.36.4-pax/drivers/ata/pata_cmd64x.c --- linux-2.6.36.4/drivers/ata/pata_cmd64x.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/ata/pata_cmd64x.c 2010-10-27 22:58:44.000000000 +0200 @@ -268,18 +268,18 @@ static const struct ata_port_operations .set_dmamode = cmd64x_set_dmamode, }; -static struct ata_port_operations cmd64x_port_ops = { +static const struct ata_port_operations cmd64x_port_ops = { .inherits = &cmd64x_base_ops, .cable_detect = ata_cable_40wire, }; -static struct ata_port_operations cmd646r1_port_ops = { +static const struct ata_port_operations cmd646r1_port_ops = { .inherits = &cmd64x_base_ops, .bmdma_stop = cmd646r1_bmdma_stop, .cable_detect = ata_cable_40wire, }; -static struct ata_port_operations cmd648_port_ops = { +static const struct ata_port_operations cmd648_port_ops = { .inherits = &cmd64x_base_ops, .bmdma_stop = cmd648_bmdma_stop, .cable_detect = cmd648_cable_detect, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/ata/pata_cs5520.c linux-2.6.36.4-pax/drivers/ata/pata_cs5520.c --- linux-2.6.36.4/drivers/ata/pata_cs5520.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/ata/pata_cs5520.c 2010-10-27 22:58:44.000000000 +0200 @@ -108,7 +108,7 @@ static struct scsi_host_template cs5520_ .sg_tablesize = LIBATA_DUMB_MAX_PRD, }; -static struct ata_port_operations cs5520_port_ops = { +static const struct ata_port_operations cs5520_port_ops = { .inherits = &ata_bmdma_port_ops, .qc_prep = ata_bmdma_dumb_qc_prep, .cable_detect = ata_cable_40wire, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/ata/pata_cs5530.c linux-2.6.36.4-pax/drivers/ata/pata_cs5530.c --- linux-2.6.36.4/drivers/ata/pata_cs5530.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/ata/pata_cs5530.c 2010-10-27 22:58:44.000000000 +0200 @@ -164,7 +164,7 @@ static struct scsi_host_template cs5530_ .sg_tablesize = LIBATA_DUMB_MAX_PRD, }; -static struct ata_port_operations cs5530_port_ops = { +static const struct ata_port_operations cs5530_port_ops = { .inherits = &ata_bmdma_port_ops, .qc_prep = ata_bmdma_dumb_qc_prep, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/ata/pata_cs5535.c linux-2.6.36.4-pax/drivers/ata/pata_cs5535.c --- linux-2.6.36.4/drivers/ata/pata_cs5535.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/ata/pata_cs5535.c 2010-10-27 22:58:44.000000000 +0200 @@ -160,7 +160,7 @@ static struct scsi_host_template cs5535_ ATA_BMDMA_SHT(DRV_NAME), }; -static struct ata_port_operations cs5535_port_ops = { +static const struct ata_port_operations cs5535_port_ops = { .inherits = &ata_bmdma_port_ops, .cable_detect = cs5535_cable_detect, .set_piomode = cs5535_set_piomode, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/ata/pata_cs5536.c linux-2.6.36.4-pax/drivers/ata/pata_cs5536.c --- linux-2.6.36.4/drivers/ata/pata_cs5536.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/ata/pata_cs5536.c 2010-10-27 22:58:44.000000000 +0200 @@ -223,7 +223,7 @@ static struct scsi_host_template cs5536_ ATA_BMDMA_SHT(DRV_NAME), }; -static struct ata_port_operations cs5536_port_ops = { +static const struct ata_port_operations cs5536_port_ops = { .inherits = &ata_bmdma32_port_ops, .cable_detect = cs5536_cable_detect, .set_piomode = cs5536_set_piomode, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/ata/pata_cypress.c linux-2.6.36.4-pax/drivers/ata/pata_cypress.c --- linux-2.6.36.4/drivers/ata/pata_cypress.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/ata/pata_cypress.c 2010-10-27 22:58:44.000000000 +0200 @@ -115,7 +115,7 @@ static struct scsi_host_template cy82c69 ATA_BMDMA_SHT(DRV_NAME), }; -static struct ata_port_operations cy82c693_port_ops = { +static const struct ata_port_operations cy82c693_port_ops = { .inherits = &ata_bmdma_port_ops, .cable_detect = ata_cable_40wire, .set_piomode = cy82c693_set_piomode, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/ata/pata_efar.c linux-2.6.36.4-pax/drivers/ata/pata_efar.c --- linux-2.6.36.4/drivers/ata/pata_efar.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/ata/pata_efar.c 2010-10-27 22:58:44.000000000 +0200 @@ -238,7 +238,7 @@ static struct scsi_host_template efar_sh ATA_BMDMA_SHT(DRV_NAME), }; -static struct ata_port_operations efar_ops = { +static const struct ata_port_operations efar_ops = { .inherits = &ata_bmdma_port_ops, .cable_detect = efar_cable_detect, .set_piomode = efar_set_piomode, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/ata/pata_hpt366.c linux-2.6.36.4-pax/drivers/ata/pata_hpt366.c --- linux-2.6.36.4/drivers/ata/pata_hpt366.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/ata/pata_hpt366.c 2010-10-27 22:58:44.000000000 +0200 @@ -269,7 +269,7 @@ static struct scsi_host_template hpt36x_ * Configuration for HPT366/68 */ -static struct ata_port_operations hpt366_port_ops = { +static const struct ata_port_operations hpt366_port_ops = { .inherits = &ata_bmdma_port_ops, .cable_detect = hpt36x_cable_detect, .mode_filter = hpt366_filter, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/ata/pata_hpt37x.c linux-2.6.36.4-pax/drivers/ata/pata_hpt37x.c --- linux-2.6.36.4/drivers/ata/pata_hpt37x.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/ata/pata_hpt37x.c 2010-10-27 22:58:44.000000000 +0200 @@ -564,7 +564,7 @@ static struct scsi_host_template hpt37x_ * Configuration for HPT370 */ -static struct ata_port_operations hpt370_port_ops = { +static const struct ata_port_operations hpt370_port_ops = { .inherits = &ata_bmdma_port_ops, .bmdma_stop = hpt370_bmdma_stop, @@ -580,7 +580,7 @@ static struct ata_port_operations hpt370 * Configuration for HPT370A. Close to 370 but less filters */ -static struct ata_port_operations hpt370a_port_ops = { +static const struct ata_port_operations hpt370a_port_ops = { .inherits = &hpt370_port_ops, .mode_filter = hpt370a_filter, }; @@ -590,7 +590,7 @@ static struct ata_port_operations hpt370 * and DMA mode setting functionality. */ -static struct ata_port_operations hpt372_port_ops = { +static const struct ata_port_operations hpt372_port_ops = { .inherits = &ata_bmdma_port_ops, .bmdma_stop = hpt37x_bmdma_stop, @@ -606,7 +606,7 @@ static struct ata_port_operations hpt372 * but we have a different cable detection procedure for function 1. */ -static struct ata_port_operations hpt374_fn1_port_ops = { +static const struct ata_port_operations hpt374_fn1_port_ops = { .inherits = &hpt372_port_ops, .cable_detect = hpt374_fn1_cable_detect, .prereset = hpt37x_pre_reset, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/ata/pata_hpt3x2n.c linux-2.6.36.4-pax/drivers/ata/pata_hpt3x2n.c --- linux-2.6.36.4/drivers/ata/pata_hpt3x2n.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/ata/pata_hpt3x2n.c 2010-10-27 22:58:44.000000000 +0200 @@ -331,7 +331,7 @@ static struct scsi_host_template hpt3x2n * Configuration for HPT3x2n. */ -static struct ata_port_operations hpt3x2n_port_ops = { +static const struct ata_port_operations hpt3x2n_port_ops = { .inherits = &ata_bmdma_port_ops, .bmdma_stop = hpt3x2n_bmdma_stop, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/ata/pata_hpt3x3.c linux-2.6.36.4-pax/drivers/ata/pata_hpt3x3.c --- linux-2.6.36.4/drivers/ata/pata_hpt3x3.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/ata/pata_hpt3x3.c 2010-10-27 22:58:44.000000000 +0200 @@ -141,7 +141,7 @@ static struct scsi_host_template hpt3x3_ ATA_BMDMA_SHT(DRV_NAME), }; -static struct ata_port_operations hpt3x3_port_ops = { +static const struct ata_port_operations hpt3x3_port_ops = { .inherits = &ata_bmdma_port_ops, .cable_detect = ata_cable_40wire, .set_piomode = hpt3x3_set_piomode, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/ata/pata_icside.c linux-2.6.36.4-pax/drivers/ata/pata_icside.c --- linux-2.6.36.4/drivers/ata/pata_icside.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/ata/pata_icside.c 2010-10-27 22:58:44.000000000 +0200 @@ -320,7 +320,7 @@ static void pata_icside_postreset(struct } } -static struct ata_port_operations pata_icside_port_ops = { +static const struct ata_port_operations pata_icside_port_ops = { .inherits = &ata_bmdma_port_ops, /* no need to build any PRD tables for DMA */ .qc_prep = ata_noop_qc_prep, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/ata/pata_isapnp.c linux-2.6.36.4-pax/drivers/ata/pata_isapnp.c --- linux-2.6.36.4/drivers/ata/pata_isapnp.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/ata/pata_isapnp.c 2010-10-27 22:58:44.000000000 +0200 @@ -23,12 +23,12 @@ static struct scsi_host_template isapnp_ ATA_PIO_SHT(DRV_NAME), }; -static struct ata_port_operations isapnp_port_ops = { +static const struct ata_port_operations isapnp_port_ops = { .inherits = &ata_sff_port_ops, .cable_detect = ata_cable_40wire, }; -static struct ata_port_operations isapnp_noalt_port_ops = { +static const struct ata_port_operations isapnp_noalt_port_ops = { .inherits = &ata_sff_port_ops, .cable_detect = ata_cable_40wire, /* No altstatus so we don't want to use the lost interrupt poll */ diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/ata/pata_it8213.c linux-2.6.36.4-pax/drivers/ata/pata_it8213.c --- linux-2.6.36.4/drivers/ata/pata_it8213.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/ata/pata_it8213.c 2010-10-27 22:58:44.000000000 +0200 @@ -233,7 +233,7 @@ static struct scsi_host_template it8213_ }; -static struct ata_port_operations it8213_ops = { +static const struct ata_port_operations it8213_ops = { .inherits = &ata_bmdma_port_ops, .cable_detect = it8213_cable_detect, .set_piomode = it8213_set_piomode, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/ata/pata_it821x.c linux-2.6.36.4-pax/drivers/ata/pata_it821x.c --- linux-2.6.36.4/drivers/ata/pata_it821x.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/ata/pata_it821x.c 2010-10-27 22:58:44.000000000 +0200 @@ -801,7 +801,7 @@ static struct scsi_host_template it821x_ ATA_BMDMA_SHT(DRV_NAME), }; -static struct ata_port_operations it821x_smart_port_ops = { +static const struct ata_port_operations it821x_smart_port_ops = { .inherits = &ata_bmdma_port_ops, .check_atapi_dma= it821x_check_atapi_dma, @@ -815,7 +815,7 @@ static struct ata_port_operations it821x .port_start = it821x_port_start, }; -static struct ata_port_operations it821x_passthru_port_ops = { +static const struct ata_port_operations it821x_passthru_port_ops = { .inherits = &ata_bmdma_port_ops, .check_atapi_dma= it821x_check_atapi_dma, @@ -831,7 +831,7 @@ static struct ata_port_operations it821x .port_start = it821x_port_start, }; -static struct ata_port_operations it821x_rdc_port_ops = { +static const struct ata_port_operations it821x_rdc_port_ops = { .inherits = &ata_bmdma_port_ops, .check_atapi_dma= it821x_check_atapi_dma, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/ata/pata_ixp4xx_cf.c linux-2.6.36.4-pax/drivers/ata/pata_ixp4xx_cf.c --- linux-2.6.36.4/drivers/ata/pata_ixp4xx_cf.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/ata/pata_ixp4xx_cf.c 2010-10-27 22:58:44.000000000 +0200 @@ -89,7 +89,7 @@ static struct scsi_host_template ixp4xx_ ATA_PIO_SHT(DRV_NAME), }; -static struct ata_port_operations ixp4xx_port_ops = { +static const struct ata_port_operations ixp4xx_port_ops = { .inherits = &ata_sff_port_ops, .sff_data_xfer = ixp4xx_mmio_data_xfer, .cable_detect = ata_cable_40wire, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/ata/pata_jmicron.c linux-2.6.36.4-pax/drivers/ata/pata_jmicron.c --- linux-2.6.36.4/drivers/ata/pata_jmicron.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/ata/pata_jmicron.c 2010-10-27 22:58:44.000000000 +0200 @@ -111,7 +111,7 @@ static struct scsi_host_template jmicron ATA_BMDMA_SHT(DRV_NAME), }; -static struct ata_port_operations jmicron_ops = { +static const struct ata_port_operations jmicron_ops = { .inherits = &ata_bmdma_port_ops, .prereset = jmicron_pre_reset, }; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/ata/pata_legacy.c linux-2.6.36.4-pax/drivers/ata/pata_legacy.c --- linux-2.6.36.4/drivers/ata/pata_legacy.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/ata/pata_legacy.c 2010-10-27 22:58:44.000000000 +0200 @@ -116,7 +116,7 @@ struct legacy_probe { struct legacy_controller { const char *name; - struct ata_port_operations *ops; + const struct ata_port_operations *ops; unsigned int pio_mask; unsigned int flags; unsigned int pflags; @@ -239,12 +239,12 @@ static const struct ata_port_operations * pio_mask as well. */ -static struct ata_port_operations simple_port_ops = { +static const struct ata_port_operations simple_port_ops = { .inherits = &legacy_base_port_ops, .sff_data_xfer = ata_sff_data_xfer_noirq, }; -static struct ata_port_operations legacy_port_ops = { +static const struct ata_port_operations legacy_port_ops = { .inherits = &legacy_base_port_ops, .sff_data_xfer = ata_sff_data_xfer_noirq, .set_mode = legacy_set_mode, @@ -340,7 +340,7 @@ static unsigned int pdc_data_xfer_vlb(st return buflen; } -static struct ata_port_operations pdc20230_port_ops = { +static const struct ata_port_operations pdc20230_port_ops = { .inherits = &legacy_base_port_ops, .set_piomode = pdc20230_set_piomode, .sff_data_xfer = pdc_data_xfer_vlb, @@ -373,7 +373,7 @@ static void ht6560a_set_piomode(struct a ioread8(ap->ioaddr.status_addr); } -static struct ata_port_operations ht6560a_port_ops = { +static const struct ata_port_operations ht6560a_port_ops = { .inherits = &legacy_base_port_ops, .set_piomode = ht6560a_set_piomode, }; @@ -416,7 +416,7 @@ static void ht6560b_set_piomode(struct a ioread8(ap->ioaddr.status_addr); } -static struct ata_port_operations ht6560b_port_ops = { +static const struct ata_port_operations ht6560b_port_ops = { .inherits = &legacy_base_port_ops, .set_piomode = ht6560b_set_piomode, }; @@ -515,7 +515,7 @@ static void opti82c611a_set_piomode(stru } -static struct ata_port_operations opti82c611a_port_ops = { +static const struct ata_port_operations opti82c611a_port_ops = { .inherits = &legacy_base_port_ops, .set_piomode = opti82c611a_set_piomode, }; @@ -625,7 +625,7 @@ static unsigned int opti82c46x_qc_issue( return ata_sff_qc_issue(qc); } -static struct ata_port_operations opti82c46x_port_ops = { +static const struct ata_port_operations opti82c46x_port_ops = { .inherits = &legacy_base_port_ops, .set_piomode = opti82c46x_set_piomode, .qc_issue = opti82c46x_qc_issue, @@ -787,20 +787,20 @@ static int qdi_port(struct platform_devi return 0; } -static struct ata_port_operations qdi6500_port_ops = { +static const struct ata_port_operations qdi6500_port_ops = { .inherits = &legacy_base_port_ops, .set_piomode = qdi6500_set_piomode, .qc_issue = qdi_qc_issue, .sff_data_xfer = vlb32_data_xfer, }; -static struct ata_port_operations qdi6580_port_ops = { +static const struct ata_port_operations qdi6580_port_ops = { .inherits = &legacy_base_port_ops, .set_piomode = qdi6580_set_piomode, .sff_data_xfer = vlb32_data_xfer, }; -static struct ata_port_operations qdi6580dp_port_ops = { +static const struct ata_port_operations qdi6580dp_port_ops = { .inherits = &legacy_base_port_ops, .set_piomode = qdi6580dp_set_piomode, .qc_issue = qdi_qc_issue, @@ -872,7 +872,7 @@ static int winbond_port(struct platform_ return 0; } -static struct ata_port_operations winbond_port_ops = { +static const struct ata_port_operations winbond_port_ops = { .inherits = &legacy_base_port_ops, .set_piomode = winbond_set_piomode, .sff_data_xfer = vlb32_data_xfer, @@ -995,7 +995,7 @@ static __init int legacy_init_one(struct int pio_modes = controller->pio_mask; unsigned long io = probe->port; u32 mask = (1 << probe->slot); - struct ata_port_operations *ops = controller->ops; + const struct ata_port_operations *ops = controller->ops; struct legacy_data *ld = &legacy_data[probe->slot]; struct ata_host *host = NULL; struct ata_port *ap; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/ata/pata_macio.c linux-2.6.36.4-pax/drivers/ata/pata_macio.c --- linux-2.6.36.4/drivers/ata/pata_macio.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/ata/pata_macio.c 2010-10-27 22:58:44.000000000 +0200 @@ -918,9 +918,8 @@ static struct scsi_host_template pata_ma .slave_configure = pata_macio_slave_config, }; -static struct ata_port_operations pata_macio_ops = { +static const struct ata_port_operations pata_macio_ops = { .inherits = &ata_bmdma_port_ops, - .freeze = pata_macio_freeze, .set_piomode = pata_macio_set_timings, .set_dmamode = pata_macio_set_timings, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/ata/pata_marvell.c linux-2.6.36.4-pax/drivers/ata/pata_marvell.c --- linux-2.6.36.4/drivers/ata/pata_marvell.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/ata/pata_marvell.c 2010-10-27 22:58:44.000000000 +0200 @@ -100,7 +100,7 @@ static struct scsi_host_template marvell ATA_BMDMA_SHT(DRV_NAME), }; -static struct ata_port_operations marvell_ops = { +static const struct ata_port_operations marvell_ops = { .inherits = &ata_bmdma_port_ops, .cable_detect = marvell_cable_detect, .prereset = marvell_pre_reset, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/ata/pata_mpc52xx.c linux-2.6.36.4-pax/drivers/ata/pata_mpc52xx.c --- linux-2.6.36.4/drivers/ata/pata_mpc52xx.c 2011-02-24 20:16:31.000000000 +0100 +++ linux-2.6.36.4-pax/drivers/ata/pata_mpc52xx.c 2011-02-24 20:30:07.000000000 +0100 @@ -609,7 +609,7 @@ static struct scsi_host_template mpc52xx ATA_PIO_SHT(DRV_NAME), }; -static struct ata_port_operations mpc52xx_ata_port_ops = { +static const struct ata_port_operations mpc52xx_ata_port_ops = { .inherits = &ata_bmdma_port_ops, .sff_dev_select = mpc52xx_ata_dev_select, .set_piomode = mpc52xx_ata_set_piomode, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/ata/pata_mpiix.c linux-2.6.36.4-pax/drivers/ata/pata_mpiix.c --- linux-2.6.36.4/drivers/ata/pata_mpiix.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/ata/pata_mpiix.c 2010-10-27 22:58:44.000000000 +0200 @@ -140,7 +140,7 @@ static struct scsi_host_template mpiix_s ATA_PIO_SHT(DRV_NAME), }; -static struct ata_port_operations mpiix_port_ops = { +static const struct ata_port_operations mpiix_port_ops = { .inherits = &ata_sff_port_ops, .qc_issue = mpiix_qc_issue, .cable_detect = ata_cable_40wire, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/ata/pata_netcell.c linux-2.6.36.4-pax/drivers/ata/pata_netcell.c --- linux-2.6.36.4/drivers/ata/pata_netcell.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/ata/pata_netcell.c 2010-10-27 22:58:44.000000000 +0200 @@ -34,7 +34,7 @@ static struct scsi_host_template netcell ATA_BMDMA_SHT(DRV_NAME), }; -static struct ata_port_operations netcell_ops = { +static const struct ata_port_operations netcell_ops = { .inherits = &ata_bmdma_port_ops, .cable_detect = ata_cable_80wire, .read_id = netcell_read_id, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/ata/pata_ninja32.c linux-2.6.36.4-pax/drivers/ata/pata_ninja32.c --- linux-2.6.36.4/drivers/ata/pata_ninja32.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/ata/pata_ninja32.c 2010-10-27 22:58:44.000000000 +0200 @@ -81,7 +81,7 @@ static struct scsi_host_template ninja32 ATA_BMDMA_SHT(DRV_NAME), }; -static struct ata_port_operations ninja32_port_ops = { +static const struct ata_port_operations ninja32_port_ops = { .inherits = &ata_bmdma_port_ops, .sff_dev_select = ninja32_dev_select, .cable_detect = ata_cable_40wire, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/ata/pata_ns87410.c linux-2.6.36.4-pax/drivers/ata/pata_ns87410.c --- linux-2.6.36.4/drivers/ata/pata_ns87410.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/ata/pata_ns87410.c 2010-10-27 22:58:44.000000000 +0200 @@ -132,7 +132,7 @@ static struct scsi_host_template ns87410 ATA_PIO_SHT(DRV_NAME), }; -static struct ata_port_operations ns87410_port_ops = { +static const struct ata_port_operations ns87410_port_ops = { .inherits = &ata_sff_port_ops, .qc_issue = ns87410_qc_issue, .cable_detect = ata_cable_40wire, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/ata/pata_ns87415.c linux-2.6.36.4-pax/drivers/ata/pata_ns87415.c --- linux-2.6.36.4/drivers/ata/pata_ns87415.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/ata/pata_ns87415.c 2010-10-27 22:58:44.000000000 +0200 @@ -299,7 +299,7 @@ static u8 ns87560_bmdma_status(struct at } #endif /* 87560 SuperIO Support */ -static struct ata_port_operations ns87415_pata_ops = { +static const struct ata_port_operations ns87415_pata_ops = { .inherits = &ata_bmdma_port_ops, .check_atapi_dma = ns87415_check_atapi_dma, @@ -313,7 +313,7 @@ static struct ata_port_operations ns8741 }; #if defined(CONFIG_SUPERIO) -static struct ata_port_operations ns87560_pata_ops = { +static const struct ata_port_operations ns87560_pata_ops = { .inherits = &ns87415_pata_ops, .sff_tf_read = ns87560_tf_read, .sff_check_status = ns87560_check_status, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/ata/pata_octeon_cf.c linux-2.6.36.4-pax/drivers/ata/pata_octeon_cf.c --- linux-2.6.36.4/drivers/ata/pata_octeon_cf.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/ata/pata_octeon_cf.c 2010-10-27 22:58:44.000000000 +0200 @@ -782,6 +782,7 @@ static unsigned int octeon_cf_qc_issue(s return 0; } +/* cannot be const */ static struct ata_port_operations octeon_cf_ops = { .inherits = &ata_sff_port_ops, .check_atapi_dma = octeon_cf_check_atapi_dma, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/ata/pata_oldpiix.c linux-2.6.36.4-pax/drivers/ata/pata_oldpiix.c --- linux-2.6.36.4/drivers/ata/pata_oldpiix.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/ata/pata_oldpiix.c 2010-10-27 22:58:44.000000000 +0200 @@ -208,7 +208,7 @@ static struct scsi_host_template oldpiix ATA_BMDMA_SHT(DRV_NAME), }; -static struct ata_port_operations oldpiix_pata_ops = { +static const struct ata_port_operations oldpiix_pata_ops = { .inherits = &ata_bmdma_port_ops, .qc_issue = oldpiix_qc_issue, .cable_detect = ata_cable_40wire, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/ata/pata_opti.c linux-2.6.36.4-pax/drivers/ata/pata_opti.c --- linux-2.6.36.4/drivers/ata/pata_opti.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/ata/pata_opti.c 2010-10-27 22:58:44.000000000 +0200 @@ -152,7 +152,7 @@ static struct scsi_host_template opti_sh ATA_PIO_SHT(DRV_NAME), }; -static struct ata_port_operations opti_port_ops = { +static const struct ata_port_operations opti_port_ops = { .inherits = &ata_sff_port_ops, .cable_detect = ata_cable_40wire, .set_piomode = opti_set_piomode, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/ata/pata_optidma.c linux-2.6.36.4-pax/drivers/ata/pata_optidma.c --- linux-2.6.36.4/drivers/ata/pata_optidma.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/ata/pata_optidma.c 2010-10-27 22:58:44.000000000 +0200 @@ -337,7 +337,7 @@ static struct scsi_host_template optidma ATA_BMDMA_SHT(DRV_NAME), }; -static struct ata_port_operations optidma_port_ops = { +static const struct ata_port_operations optidma_port_ops = { .inherits = &ata_bmdma_port_ops, .cable_detect = ata_cable_40wire, .set_piomode = optidma_set_pio_mode, @@ -346,7 +346,7 @@ static struct ata_port_operations optidm .prereset = optidma_pre_reset, }; -static struct ata_port_operations optiplus_port_ops = { +static const struct ata_port_operations optiplus_port_ops = { .inherits = &optidma_port_ops, .set_piomode = optiplus_set_pio_mode, .set_dmamode = optiplus_set_dma_mode, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/ata/pata_palmld.c linux-2.6.36.4-pax/drivers/ata/pata_palmld.c --- linux-2.6.36.4/drivers/ata/pata_palmld.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/ata/pata_palmld.c 2010-10-27 22:58:44.000000000 +0200 @@ -37,7 +37,7 @@ static struct scsi_host_template palmld_ ATA_PIO_SHT(DRV_NAME), }; -static struct ata_port_operations palmld_port_ops = { +static const struct ata_port_operations palmld_port_ops = { .inherits = &ata_sff_port_ops, .sff_data_xfer = ata_sff_data_xfer_noirq, .cable_detect = ata_cable_40wire, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/ata/pata_pcmcia.c linux-2.6.36.4-pax/drivers/ata/pata_pcmcia.c --- linux-2.6.36.4/drivers/ata/pata_pcmcia.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/ata/pata_pcmcia.c 2010-10-27 22:58:44.000000000 +0200 @@ -152,14 +152,14 @@ static struct scsi_host_template pcmcia_ ATA_PIO_SHT(DRV_NAME), }; -static struct ata_port_operations pcmcia_port_ops = { +static const struct ata_port_operations pcmcia_port_ops = { .inherits = &ata_sff_port_ops, .sff_data_xfer = ata_sff_data_xfer_noirq, .cable_detect = ata_cable_40wire, .set_mode = pcmcia_set_mode, }; -static struct ata_port_operations pcmcia_8bit_port_ops = { +static const struct ata_port_operations pcmcia_8bit_port_ops = { .inherits = &ata_sff_port_ops, .sff_data_xfer = ata_data_xfer_8bit, .cable_detect = ata_cable_40wire, @@ -244,7 +244,7 @@ static int pcmcia_init_one(struct pcmcia unsigned long io_base, ctl_base; void __iomem *io_addr, *ctl_addr; int n_ports = 1; - struct ata_port_operations *ops = &pcmcia_port_ops; + const struct ata_port_operations *ops = &pcmcia_port_ops; /* Set up attributes in order to probe card and get resources */ pdev->resource[0]->flags |= IO_DATA_PATH_WIDTH_AUTO; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/ata/pata_pdc2027x.c linux-2.6.36.4-pax/drivers/ata/pata_pdc2027x.c --- linux-2.6.36.4/drivers/ata/pata_pdc2027x.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/ata/pata_pdc2027x.c 2010-10-27 22:58:44.000000000 +0200 @@ -132,14 +132,14 @@ static struct scsi_host_template pdc2027 ATA_BMDMA_SHT(DRV_NAME), }; -static struct ata_port_operations pdc2027x_pata100_ops = { +static const struct ata_port_operations pdc2027x_pata100_ops = { .inherits = &ata_bmdma_port_ops, .check_atapi_dma = pdc2027x_check_atapi_dma, .cable_detect = pdc2027x_cable_detect, .prereset = pdc2027x_prereset, }; -static struct ata_port_operations pdc2027x_pata133_ops = { +static const struct ata_port_operations pdc2027x_pata133_ops = { .inherits = &pdc2027x_pata100_ops, .mode_filter = pdc2027x_mode_filter, .set_piomode = pdc2027x_set_piomode, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/ata/pata_pdc202xx_old.c linux-2.6.36.4-pax/drivers/ata/pata_pdc202xx_old.c --- linux-2.6.36.4/drivers/ata/pata_pdc202xx_old.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/ata/pata_pdc202xx_old.c 2010-10-27 22:58:44.000000000 +0200 @@ -274,7 +274,7 @@ static struct scsi_host_template pdc202x ATA_BMDMA_SHT(DRV_NAME), }; -static struct ata_port_operations pdc2024x_port_ops = { +static const struct ata_port_operations pdc2024x_port_ops = { .inherits = &ata_bmdma_port_ops, .cable_detect = ata_cable_40wire, @@ -284,7 +284,7 @@ static struct ata_port_operations pdc202 .sff_exec_command = pdc202xx_exec_command, }; -static struct ata_port_operations pdc2026x_port_ops = { +static const struct ata_port_operations pdc2026x_port_ops = { .inherits = &pdc2024x_port_ops, .check_atapi_dma = pdc2026x_check_atapi_dma, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/ata/pata_piccolo.c linux-2.6.36.4-pax/drivers/ata/pata_piccolo.c --- linux-2.6.36.4/drivers/ata/pata_piccolo.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/ata/pata_piccolo.c 2010-10-27 22:58:44.000000000 +0200 @@ -67,7 +67,7 @@ static struct scsi_host_template tosh_sh ATA_BMDMA_SHT(DRV_NAME), }; -static struct ata_port_operations tosh_port_ops = { +static const struct ata_port_operations tosh_port_ops = { .inherits = &ata_bmdma_port_ops, .cable_detect = ata_cable_unknown, .set_piomode = tosh_set_piomode, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/ata/pata_platform.c linux-2.6.36.4-pax/drivers/ata/pata_platform.c --- linux-2.6.36.4/drivers/ata/pata_platform.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/ata/pata_platform.c 2010-10-27 22:58:44.000000000 +0200 @@ -48,7 +48,7 @@ static struct scsi_host_template pata_pl ATA_PIO_SHT(DRV_NAME), }; -static struct ata_port_operations pata_platform_port_ops = { +static const struct ata_port_operations pata_platform_port_ops = { .inherits = &ata_sff_port_ops, .sff_data_xfer = ata_sff_data_xfer_noirq, .cable_detect = ata_cable_unknown, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/ata/pata_pxa.c linux-2.6.36.4-pax/drivers/ata/pata_pxa.c --- linux-2.6.36.4/drivers/ata/pata_pxa.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/ata/pata_pxa.c 2010-10-27 22:58:44.000000000 +0200 @@ -198,7 +198,7 @@ static struct scsi_host_template pxa_ata ATA_BMDMA_SHT(DRV_NAME), }; -static struct ata_port_operations pxa_ata_port_ops = { +static const struct ata_port_operations pxa_ata_port_ops = { .inherits = &ata_bmdma_port_ops, .cable_detect = ata_cable_40wire, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/ata/pata_qdi.c linux-2.6.36.4-pax/drivers/ata/pata_qdi.c --- linux-2.6.36.4/drivers/ata/pata_qdi.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/ata/pata_qdi.c 2010-10-27 22:58:44.000000000 +0200 @@ -157,7 +157,7 @@ static struct scsi_host_template qdi_sht ATA_PIO_SHT(DRV_NAME), }; -static struct ata_port_operations qdi6500_port_ops = { +static const struct ata_port_operations qdi6500_port_ops = { .inherits = &ata_sff_port_ops, .qc_issue = qdi_qc_issue, .sff_data_xfer = qdi_data_xfer, @@ -165,7 +165,7 @@ static struct ata_port_operations qdi650 .set_piomode = qdi6500_set_piomode, }; -static struct ata_port_operations qdi6580_port_ops = { +static const struct ata_port_operations qdi6580_port_ops = { .inherits = &qdi6500_port_ops, .set_piomode = qdi6580_set_piomode, }; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/ata/pata_radisys.c linux-2.6.36.4-pax/drivers/ata/pata_radisys.c --- linux-2.6.36.4/drivers/ata/pata_radisys.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/ata/pata_radisys.c 2010-10-27 22:58:44.000000000 +0200 @@ -187,7 +187,7 @@ static struct scsi_host_template radisys ATA_BMDMA_SHT(DRV_NAME), }; -static struct ata_port_operations radisys_pata_ops = { +static const struct ata_port_operations radisys_pata_ops = { .inherits = &ata_bmdma_port_ops, .qc_issue = radisys_qc_issue, .cable_detect = ata_cable_unknown, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/ata/pata_rb532_cf.c linux-2.6.36.4-pax/drivers/ata/pata_rb532_cf.c --- linux-2.6.36.4/drivers/ata/pata_rb532_cf.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/ata/pata_rb532_cf.c 2010-10-27 22:58:44.000000000 +0200 @@ -69,7 +69,7 @@ static irqreturn_t rb532_pata_irq_handle return IRQ_HANDLED; } -static struct ata_port_operations rb532_pata_port_ops = { +static const struct ata_port_operations rb532_pata_port_ops = { .inherits = &ata_sff_port_ops, .sff_data_xfer = ata_sff_data_xfer32, }; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/ata/pata_rdc.c linux-2.6.36.4-pax/drivers/ata/pata_rdc.c --- linux-2.6.36.4/drivers/ata/pata_rdc.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/ata/pata_rdc.c 2010-10-27 22:58:44.000000000 +0200 @@ -273,7 +273,7 @@ static void rdc_set_dmamode(struct ata_p pci_write_config_byte(dev, 0x48, udma_enable); } -static struct ata_port_operations rdc_pata_ops = { +static const struct ata_port_operations rdc_pata_ops = { .inherits = &ata_bmdma32_port_ops, .cable_detect = rdc_pata_cable_detect, .set_piomode = rdc_set_piomode, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/ata/pata_rz1000.c linux-2.6.36.4-pax/drivers/ata/pata_rz1000.c --- linux-2.6.36.4/drivers/ata/pata_rz1000.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/ata/pata_rz1000.c 2010-10-27 22:58:44.000000000 +0200 @@ -54,7 +54,7 @@ static struct scsi_host_template rz1000_ ATA_PIO_SHT(DRV_NAME), }; -static struct ata_port_operations rz1000_port_ops = { +static const struct ata_port_operations rz1000_port_ops = { .inherits = &ata_sff_port_ops, .cable_detect = ata_cable_40wire, .set_mode = rz1000_set_mode, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/ata/pata_samsung_cf.c linux-2.6.36.4-pax/drivers/ata/pata_samsung_cf.c --- linux-2.6.36.4/drivers/ata/pata_samsung_cf.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/ata/pata_samsung_cf.c 2010-10-27 22:58:44.000000000 +0200 @@ -399,7 +399,7 @@ static struct scsi_host_template pata_s3 ATA_PIO_SHT(DRV_NAME), }; -static struct ata_port_operations pata_s3c_port_ops = { +static const struct ata_port_operations pata_s3c_port_ops = { .inherits = &ata_sff_port_ops, .sff_check_status = pata_s3c_check_status, .sff_check_altstatus = pata_s3c_check_altstatus, @@ -413,7 +413,7 @@ static struct ata_port_operations pata_s .set_piomode = pata_s3c_set_piomode, }; -static struct ata_port_operations pata_s5p_port_ops = { +static const struct ata_port_operations pata_s5p_port_ops = { .inherits = &ata_sff_port_ops, .set_piomode = pata_s3c_set_piomode, }; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/ata/pata_sc1200.c linux-2.6.36.4-pax/drivers/ata/pata_sc1200.c --- linux-2.6.36.4/drivers/ata/pata_sc1200.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/ata/pata_sc1200.c 2010-10-27 22:58:44.000000000 +0200 @@ -207,7 +207,7 @@ static struct scsi_host_template sc1200_ .sg_tablesize = LIBATA_DUMB_MAX_PRD, }; -static struct ata_port_operations sc1200_port_ops = { +static const struct ata_port_operations sc1200_port_ops = { .inherits = &ata_bmdma_port_ops, .qc_prep = ata_bmdma_dumb_qc_prep, .qc_issue = sc1200_qc_issue, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/ata/pata_scc.c linux-2.6.36.4-pax/drivers/ata/pata_scc.c --- linux-2.6.36.4/drivers/ata/pata_scc.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/ata/pata_scc.c 2010-10-27 22:58:44.000000000 +0200 @@ -926,7 +926,7 @@ static struct scsi_host_template scc_sht ATA_BMDMA_SHT(DRV_NAME), }; -static struct ata_port_operations scc_pata_ops = { +static const struct ata_port_operations scc_pata_ops = { .inherits = &ata_bmdma_port_ops, .set_piomode = scc_set_piomode, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/ata/pata_sch.c linux-2.6.36.4-pax/drivers/ata/pata_sch.c --- linux-2.6.36.4/drivers/ata/pata_sch.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/ata/pata_sch.c 2010-10-27 22:58:44.000000000 +0200 @@ -75,7 +75,7 @@ static struct scsi_host_template sch_sht ATA_BMDMA_SHT(DRV_NAME), }; -static struct ata_port_operations sch_pata_ops = { +static const struct ata_port_operations sch_pata_ops = { .inherits = &ata_bmdma_port_ops, .cable_detect = ata_cable_unknown, .set_piomode = sch_set_piomode, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/ata/pata_serverworks.c linux-2.6.36.4-pax/drivers/ata/pata_serverworks.c --- linux-2.6.36.4/drivers/ata/pata_serverworks.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/ata/pata_serverworks.c 2010-10-27 22:58:44.000000000 +0200 @@ -300,7 +300,7 @@ static struct scsi_host_template serverw ATA_BMDMA_SHT(DRV_NAME), }; -static struct ata_port_operations serverworks_osb4_port_ops = { +static const struct ata_port_operations serverworks_osb4_port_ops = { .inherits = &ata_bmdma_port_ops, .cable_detect = serverworks_cable_detect, .mode_filter = serverworks_osb4_filter, @@ -308,7 +308,7 @@ static struct ata_port_operations server .set_dmamode = serverworks_set_dmamode, }; -static struct ata_port_operations serverworks_csb_port_ops = { +static const struct ata_port_operations serverworks_csb_port_ops = { .inherits = &serverworks_osb4_port_ops, .mode_filter = serverworks_csb_filter, }; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/ata/pata_sil680.c linux-2.6.36.4-pax/drivers/ata/pata_sil680.c --- linux-2.6.36.4/drivers/ata/pata_sil680.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/ata/pata_sil680.c 2010-10-27 22:58:44.000000000 +0200 @@ -214,8 +214,7 @@ static struct scsi_host_template sil680_ ATA_BMDMA_SHT(DRV_NAME), }; - -static struct ata_port_operations sil680_port_ops = { +static const struct ata_port_operations sil680_port_ops = { .inherits = &ata_bmdma32_port_ops, .sff_exec_command = sil680_sff_exec_command, .cable_detect = sil680_cable_detect, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/ata/pata_sis.c linux-2.6.36.4-pax/drivers/ata/pata_sis.c --- linux-2.6.36.4/drivers/ata/pata_sis.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/ata/pata_sis.c 2010-10-27 22:58:44.000000000 +0200 @@ -503,47 +503,47 @@ static struct scsi_host_template sis_sht ATA_BMDMA_SHT(DRV_NAME), }; -static struct ata_port_operations sis_133_for_sata_ops = { +static const struct ata_port_operations sis_133_for_sata_ops = { .inherits = &ata_bmdma_port_ops, .set_piomode = sis_133_set_piomode, .set_dmamode = sis_133_set_dmamode, .cable_detect = sis_133_cable_detect, }; -static struct ata_port_operations sis_base_ops = { +static const struct ata_port_operations sis_base_ops = { .inherits = &ata_bmdma_port_ops, .prereset = sis_pre_reset, }; -static struct ata_port_operations sis_133_ops = { +static const struct ata_port_operations sis_133_ops = { .inherits = &sis_base_ops, .set_piomode = sis_133_set_piomode, .set_dmamode = sis_133_set_dmamode, .cable_detect = sis_133_cable_detect, }; -static struct ata_port_operations sis_133_early_ops = { +static const struct ata_port_operations sis_133_early_ops = { .inherits = &sis_base_ops, .set_piomode = sis_100_set_piomode, .set_dmamode = sis_133_early_set_dmamode, .cable_detect = sis_66_cable_detect, }; -static struct ata_port_operations sis_100_ops = { +static const struct ata_port_operations sis_100_ops = { .inherits = &sis_base_ops, .set_piomode = sis_100_set_piomode, .set_dmamode = sis_100_set_dmamode, .cable_detect = sis_66_cable_detect, }; -static struct ata_port_operations sis_66_ops = { +static const struct ata_port_operations sis_66_ops = { .inherits = &sis_base_ops, .set_piomode = sis_old_set_piomode, .set_dmamode = sis_66_set_dmamode, .cable_detect = sis_66_cable_detect, }; -static struct ata_port_operations sis_old_ops = { +static const struct ata_port_operations sis_old_ops = { .inherits = &sis_base_ops, .set_piomode = sis_old_set_piomode, .set_dmamode = sis_old_set_dmamode, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/ata/pata_sl82c105.c linux-2.6.36.4-pax/drivers/ata/pata_sl82c105.c --- linux-2.6.36.4/drivers/ata/pata_sl82c105.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/ata/pata_sl82c105.c 2010-10-27 22:58:44.000000000 +0200 @@ -231,7 +231,7 @@ static struct scsi_host_template sl82c10 ATA_BMDMA_SHT(DRV_NAME), }; -static struct ata_port_operations sl82c105_port_ops = { +static const struct ata_port_operations sl82c105_port_ops = { .inherits = &ata_bmdma_port_ops, .qc_defer = sl82c105_qc_defer, .bmdma_start = sl82c105_bmdma_start, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/ata/pata_triflex.c linux-2.6.36.4-pax/drivers/ata/pata_triflex.c --- linux-2.6.36.4/drivers/ata/pata_triflex.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/ata/pata_triflex.c 2010-10-27 22:58:44.000000000 +0200 @@ -178,7 +178,7 @@ static struct scsi_host_template triflex ATA_BMDMA_SHT(DRV_NAME), }; -static struct ata_port_operations triflex_port_ops = { +static const struct ata_port_operations triflex_port_ops = { .inherits = &ata_bmdma_port_ops, .bmdma_start = triflex_bmdma_start, .bmdma_stop = triflex_bmdma_stop, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/ata/pata_via.c linux-2.6.36.4-pax/drivers/ata/pata_via.c --- linux-2.6.36.4/drivers/ata/pata_via.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/ata/pata_via.c 2010-10-27 22:58:44.000000000 +0200 @@ -441,7 +441,7 @@ static struct scsi_host_template via_sht ATA_BMDMA_SHT(DRV_NAME), }; -static struct ata_port_operations via_port_ops = { +static const struct ata_port_operations via_port_ops = { .inherits = &ata_bmdma_port_ops, .cable_detect = via_cable_detect, .set_piomode = via_set_piomode, @@ -452,7 +452,7 @@ static struct ata_port_operations via_po .mode_filter = via_mode_filter, }; -static struct ata_port_operations via_port_ops_noirq = { +static const struct ata_port_operations via_port_ops_noirq = { .inherits = &via_port_ops, .sff_data_xfer = ata_sff_data_xfer_noirq, }; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/ata/pdc_adma.c linux-2.6.36.4-pax/drivers/ata/pdc_adma.c --- linux-2.6.36.4/drivers/ata/pdc_adma.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/ata/pdc_adma.c 2010-10-27 22:58:44.000000000 +0200 @@ -146,7 +146,7 @@ static struct scsi_host_template adma_at .dma_boundary = ADMA_DMA_BOUNDARY, }; -static struct ata_port_operations adma_ata_ops = { +static const struct ata_port_operations adma_ata_ops = { .inherits = &ata_sff_port_ops, .lost_interrupt = ATA_OP_NULL, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/ata/sata_dwc_460ex.c linux-2.6.36.4-pax/drivers/ata/sata_dwc_460ex.c --- linux-2.6.36.4/drivers/ata/sata_dwc_460ex.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/ata/sata_dwc_460ex.c 2010-10-27 22:58:44.000000000 +0200 @@ -1560,7 +1560,7 @@ static struct scsi_host_template sata_dw .dma_boundary = ATA_DMA_BOUNDARY, }; -static struct ata_port_operations sata_dwc_ops = { +static const struct ata_port_operations sata_dwc_ops = { .inherits = &ata_sff_port_ops, .error_handler = sata_dwc_error_handler, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/ata/sata_fsl.c linux-2.6.36.4-pax/drivers/ata/sata_fsl.c --- linux-2.6.36.4/drivers/ata/sata_fsl.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/ata/sata_fsl.c 2010-10-27 22:58:44.000000000 +0200 @@ -1261,7 +1261,7 @@ static struct scsi_host_template sata_fs .dma_boundary = ATA_DMA_BOUNDARY, }; -static struct ata_port_operations sata_fsl_ops = { +static const struct ata_port_operations sata_fsl_ops = { .inherits = &sata_pmp_port_ops, .qc_defer = ata_std_qc_defer, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/ata/sata_inic162x.c linux-2.6.36.4-pax/drivers/ata/sata_inic162x.c --- linux-2.6.36.4/drivers/ata/sata_inic162x.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/ata/sata_inic162x.c 2010-10-27 22:58:44.000000000 +0200 @@ -705,7 +705,7 @@ static int inic_port_start(struct ata_po return 0; } -static struct ata_port_operations inic_port_ops = { +static const struct ata_port_operations inic_port_ops = { .inherits = &sata_port_ops, .check_atapi_dma = inic_check_atapi_dma, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/ata/sata_mv.c linux-2.6.36.4-pax/drivers/ata/sata_mv.c --- linux-2.6.36.4/drivers/ata/sata_mv.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/ata/sata_mv.c 2010-10-27 22:58:44.000000000 +0200 @@ -663,7 +663,7 @@ static struct scsi_host_template mv6_sht .dma_boundary = MV_DMA_BOUNDARY, }; -static struct ata_port_operations mv5_ops = { +static const struct ata_port_operations mv5_ops = { .inherits = &ata_sff_port_ops, .lost_interrupt = ATA_OP_NULL, @@ -683,7 +683,7 @@ static struct ata_port_operations mv5_op .port_stop = mv_port_stop, }; -static struct ata_port_operations mv6_ops = { +static const struct ata_port_operations mv6_ops = { .inherits = &ata_bmdma_port_ops, .lost_interrupt = ATA_OP_NULL, @@ -717,7 +717,7 @@ static struct ata_port_operations mv6_op .port_stop = mv_port_stop, }; -static struct ata_port_operations mv_iie_ops = { +static const struct ata_port_operations mv_iie_ops = { .inherits = &mv6_ops, .dev_config = ATA_OP_NULL, .qc_prep = mv_qc_prep_iie, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/ata/sata_nv.c linux-2.6.36.4-pax/drivers/ata/sata_nv.c --- linux-2.6.36.4/drivers/ata/sata_nv.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/ata/sata_nv.c 2010-10-27 22:58:44.000000000 +0200 @@ -465,7 +465,7 @@ static struct scsi_host_template nv_swnc * cases. Define nv_hardreset() which only kicks in for post-boot * probing and use it for all variants. */ -static struct ata_port_operations nv_generic_ops = { +static const struct ata_port_operations nv_generic_ops = { .inherits = &ata_bmdma_port_ops, .lost_interrupt = ATA_OP_NULL, .scr_read = nv_scr_read, @@ -473,20 +473,20 @@ static struct ata_port_operations nv_gen .hardreset = nv_hardreset, }; -static struct ata_port_operations nv_nf2_ops = { +static const struct ata_port_operations nv_nf2_ops = { .inherits = &nv_generic_ops, .freeze = nv_nf2_freeze, .thaw = nv_nf2_thaw, }; -static struct ata_port_operations nv_ck804_ops = { +static const struct ata_port_operations nv_ck804_ops = { .inherits = &nv_generic_ops, .freeze = nv_ck804_freeze, .thaw = nv_ck804_thaw, .host_stop = nv_ck804_host_stop, }; -static struct ata_port_operations nv_adma_ops = { +static const struct ata_port_operations nv_adma_ops = { .inherits = &nv_ck804_ops, .check_atapi_dma = nv_adma_check_atapi_dma, @@ -510,7 +510,7 @@ static struct ata_port_operations nv_adm .host_stop = nv_adma_host_stop, }; -static struct ata_port_operations nv_swncq_ops = { +static const struct ata_port_operations nv_swncq_ops = { .inherits = &nv_generic_ops, .qc_defer = ata_std_qc_defer, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/ata/sata_promise.c linux-2.6.36.4-pax/drivers/ata/sata_promise.c --- linux-2.6.36.4/drivers/ata/sata_promise.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/ata/sata_promise.c 2010-10-27 22:58:44.000000000 +0200 @@ -196,7 +196,7 @@ static const struct ata_port_operations .error_handler = pdc_error_handler, }; -static struct ata_port_operations pdc_sata_ops = { +static const struct ata_port_operations pdc_sata_ops = { .inherits = &pdc_common_ops, .cable_detect = pdc_sata_cable_detect, .freeze = pdc_sata_freeze, @@ -209,14 +209,14 @@ static struct ata_port_operations pdc_sa /* First-generation chips need a more restrictive ->check_atapi_dma op, and ->freeze/thaw that ignore the hotplug controls. */ -static struct ata_port_operations pdc_old_sata_ops = { +static const struct ata_port_operations pdc_old_sata_ops = { .inherits = &pdc_sata_ops, .freeze = pdc_freeze, .thaw = pdc_thaw, .check_atapi_dma = pdc_old_sata_check_atapi_dma, }; -static struct ata_port_operations pdc_pata_ops = { +static const struct ata_port_operations pdc_pata_ops = { .inherits = &pdc_common_ops, .cable_detect = pdc_pata_cable_detect, .freeze = pdc_freeze, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/ata/sata_qstor.c linux-2.6.36.4-pax/drivers/ata/sata_qstor.c --- linux-2.6.36.4/drivers/ata/sata_qstor.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/ata/sata_qstor.c 2010-10-27 22:58:44.000000000 +0200 @@ -131,7 +131,7 @@ static struct scsi_host_template qs_ata_ .dma_boundary = QS_DMA_BOUNDARY, }; -static struct ata_port_operations qs_ata_ops = { +static const struct ata_port_operations qs_ata_ops = { .inherits = &ata_sff_port_ops, .check_atapi_dma = qs_check_atapi_dma, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/ata/sata_sil.c linux-2.6.36.4-pax/drivers/ata/sata_sil.c --- linux-2.6.36.4/drivers/ata/sata_sil.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/ata/sata_sil.c 2010-10-27 22:58:44.000000000 +0200 @@ -182,7 +182,7 @@ static struct scsi_host_template sil_sht .sg_tablesize = ATA_MAX_PRD }; -static struct ata_port_operations sil_ops = { +static const struct ata_port_operations sil_ops = { .inherits = &ata_bmdma32_port_ops, .dev_config = sil_dev_config, .set_mode = sil_set_mode, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/ata/sata_sil24.c linux-2.6.36.4-pax/drivers/ata/sata_sil24.c --- linux-2.6.36.4/drivers/ata/sata_sil24.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/ata/sata_sil24.c 2010-10-27 22:58:44.000000000 +0200 @@ -389,7 +389,7 @@ static struct scsi_host_template sil24_s .dma_boundary = ATA_DMA_BOUNDARY, }; -static struct ata_port_operations sil24_ops = { +static const struct ata_port_operations sil24_ops = { .inherits = &sata_pmp_port_ops, .qc_defer = sil24_qc_defer, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/ata/sata_sis.c linux-2.6.36.4-pax/drivers/ata/sata_sis.c --- linux-2.6.36.4/drivers/ata/sata_sis.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/ata/sata_sis.c 2010-10-27 22:58:44.000000000 +0200 @@ -89,7 +89,7 @@ static struct scsi_host_template sis_sht ATA_BMDMA_SHT(DRV_NAME), }; -static struct ata_port_operations sis_ops = { +static const struct ata_port_operations sis_ops = { .inherits = &ata_bmdma_port_ops, .scr_read = sis_scr_read, .scr_write = sis_scr_write, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/ata/sata_svw.c linux-2.6.36.4-pax/drivers/ata/sata_svw.c --- linux-2.6.36.4/drivers/ata/sata_svw.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/ata/sata_svw.c 2010-10-27 22:58:44.000000000 +0200 @@ -344,7 +344,7 @@ static struct scsi_host_template k2_sata }; -static struct ata_port_operations k2_sata_ops = { +static const struct ata_port_operations k2_sata_ops = { .inherits = &ata_bmdma_port_ops, .sff_tf_load = k2_sata_tf_load, .sff_tf_read = k2_sata_tf_read, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/ata/sata_sx4.c linux-2.6.36.4-pax/drivers/ata/sata_sx4.c --- linux-2.6.36.4/drivers/ata/sata_sx4.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/ata/sata_sx4.c 2010-10-27 22:58:44.000000000 +0200 @@ -249,7 +249,7 @@ static struct scsi_host_template pdc_sat }; /* TODO: inherit from base port_ops after converting to new EH */ -static struct ata_port_operations pdc_20621_ops = { +static const struct ata_port_operations pdc_20621_ops = { .inherits = &ata_sff_port_ops, .check_atapi_dma = pdc_check_atapi_dma, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/ata/sata_uli.c linux-2.6.36.4-pax/drivers/ata/sata_uli.c --- linux-2.6.36.4/drivers/ata/sata_uli.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/ata/sata_uli.c 2010-10-27 22:58:44.000000000 +0200 @@ -80,7 +80,7 @@ static struct scsi_host_template uli_sht ATA_BMDMA_SHT(DRV_NAME), }; -static struct ata_port_operations uli_ops = { +static const struct ata_port_operations uli_ops = { .inherits = &ata_bmdma_port_ops, .scr_read = uli_scr_read, .scr_write = uli_scr_write, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/ata/sata_via.c linux-2.6.36.4-pax/drivers/ata/sata_via.c --- linux-2.6.36.4/drivers/ata/sata_via.c 2010-12-16 12:42:50.000000000 +0100 +++ linux-2.6.36.4-pax/drivers/ata/sata_via.c 2010-12-16 12:43:29.000000000 +0100 @@ -115,32 +115,32 @@ static struct scsi_host_template svia_sh ATA_BMDMA_SHT(DRV_NAME), }; -static struct ata_port_operations svia_base_ops = { +static const struct ata_port_operations svia_base_ops = { .inherits = &ata_bmdma_port_ops, .sff_tf_load = svia_tf_load, }; -static struct ata_port_operations vt6420_sata_ops = { +static const struct ata_port_operations vt6420_sata_ops = { .inherits = &svia_base_ops, .freeze = svia_noop_freeze, .prereset = vt6420_prereset, .bmdma_start = vt6420_bmdma_start, }; -static struct ata_port_operations vt6421_pata_ops = { +static const struct ata_port_operations vt6421_pata_ops = { .inherits = &svia_base_ops, .cable_detect = vt6421_pata_cable_detect, .set_piomode = vt6421_set_pio_mode, .set_dmamode = vt6421_set_dma_mode, }; -static struct ata_port_operations vt6421_sata_ops = { +static const struct ata_port_operations vt6421_sata_ops = { .inherits = &svia_base_ops, .scr_read = svia_scr_read, .scr_write = svia_scr_write, }; -static struct ata_port_operations vt8251_ops = { +static const struct ata_port_operations vt8251_ops = { .inherits = &svia_base_ops, .hardreset = sata_std_hardreset, .scr_read = vt8251_scr_read, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/ata/sata_vsc.c linux-2.6.36.4-pax/drivers/ata/sata_vsc.c --- linux-2.6.36.4/drivers/ata/sata_vsc.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/ata/sata_vsc.c 2010-10-27 22:58:44.000000000 +0200 @@ -300,7 +300,7 @@ static struct scsi_host_template vsc_sat }; -static struct ata_port_operations vsc_sata_ops = { +static const struct ata_port_operations vsc_sata_ops = { .inherits = &ata_bmdma_port_ops, /* The IRQ handling is not quite standard SFF behaviour so we cannot use the default lost interrupt handler */ diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/atm/adummy.c linux-2.6.36.4-pax/drivers/atm/adummy.c --- linux-2.6.36.4/drivers/atm/adummy.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/atm/adummy.c 2010-10-27 22:58:07.000000000 +0200 @@ -114,7 +114,7 @@ adummy_send(struct atm_vcc *vcc, struct vcc->pop(vcc, skb); else dev_kfree_skb_any(skb); - atomic_inc(&vcc->stats->tx); + atomic_inc_unchecked(&vcc->stats->tx); return 0; } diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/atm/ambassador.c linux-2.6.36.4-pax/drivers/atm/ambassador.c --- linux-2.6.36.4/drivers/atm/ambassador.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/atm/ambassador.c 2010-10-27 22:58:07.000000000 +0200 @@ -454,7 +454,7 @@ static void tx_complete (amb_dev * dev, PRINTD (DBG_FLOW|DBG_TX, "tx_complete %p %p", dev, tx); // VC layer stats - atomic_inc(&ATM_SKB(skb)->vcc->stats->tx); + atomic_inc_unchecked(&ATM_SKB(skb)->vcc->stats->tx); // free the descriptor kfree (tx_descr); @@ -495,7 +495,7 @@ static void rx_complete (amb_dev * dev, dump_skb ("<<<", vc, skb); // VC layer stats - atomic_inc(&atm_vcc->stats->rx); + atomic_inc_unchecked(&atm_vcc->stats->rx); __net_timestamp(skb); // end of our responsability atm_vcc->push (atm_vcc, skb); @@ -510,7 +510,7 @@ static void rx_complete (amb_dev * dev, } else { PRINTK (KERN_INFO, "dropped over-size frame"); // should we count this? - atomic_inc(&atm_vcc->stats->rx_drop); + atomic_inc_unchecked(&atm_vcc->stats->rx_drop); } } else { @@ -1342,7 +1342,7 @@ static int amb_send (struct atm_vcc * at } if (check_area (skb->data, skb->len)) { - atomic_inc(&atm_vcc->stats->tx_err); + atomic_inc_unchecked(&atm_vcc->stats->tx_err); return -ENOMEM; // ? } diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/atm/atmtcp.c linux-2.6.36.4-pax/drivers/atm/atmtcp.c --- linux-2.6.36.4/drivers/atm/atmtcp.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/atm/atmtcp.c 2010-10-27 22:58:07.000000000 +0200 @@ -207,7 +207,7 @@ static int atmtcp_v_send(struct atm_vcc if (vcc->pop) vcc->pop(vcc,skb); else dev_kfree_skb(skb); if (dev_data) return 0; - atomic_inc(&vcc->stats->tx_err); + atomic_inc_unchecked(&vcc->stats->tx_err); return -ENOLINK; } size = skb->len+sizeof(struct atmtcp_hdr); @@ -215,7 +215,7 @@ static int atmtcp_v_send(struct atm_vcc if (!new_skb) { if (vcc->pop) vcc->pop(vcc,skb); else dev_kfree_skb(skb); - atomic_inc(&vcc->stats->tx_err); + atomic_inc_unchecked(&vcc->stats->tx_err); return -ENOBUFS; } hdr = (void *) skb_put(new_skb,sizeof(struct atmtcp_hdr)); @@ -226,8 +226,8 @@ static int atmtcp_v_send(struct atm_vcc if (vcc->pop) vcc->pop(vcc,skb); else dev_kfree_skb(skb); out_vcc->push(out_vcc,new_skb); - atomic_inc(&vcc->stats->tx); - atomic_inc(&out_vcc->stats->rx); + atomic_inc_unchecked(&vcc->stats->tx); + atomic_inc_unchecked(&out_vcc->stats->rx); return 0; } @@ -301,7 +301,7 @@ static int atmtcp_c_send(struct atm_vcc out_vcc = find_vcc(dev, ntohs(hdr->vpi), ntohs(hdr->vci)); read_unlock(&vcc_sklist_lock); if (!out_vcc) { - atomic_inc(&vcc->stats->tx_err); + atomic_inc_unchecked(&vcc->stats->tx_err); goto done; } skb_pull(skb,sizeof(struct atmtcp_hdr)); @@ -313,8 +313,8 @@ static int atmtcp_c_send(struct atm_vcc __net_timestamp(new_skb); skb_copy_from_linear_data(skb, skb_put(new_skb, skb->len), skb->len); out_vcc->push(out_vcc,new_skb); - atomic_inc(&vcc->stats->tx); - atomic_inc(&out_vcc->stats->rx); + atomic_inc_unchecked(&vcc->stats->tx); + atomic_inc_unchecked(&out_vcc->stats->rx); done: if (vcc->pop) vcc->pop(vcc,skb); else dev_kfree_skb(skb); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/atm/eni.c linux-2.6.36.4-pax/drivers/atm/eni.c --- linux-2.6.36.4/drivers/atm/eni.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/atm/eni.c 2010-10-27 22:58:07.000000000 +0200 @@ -526,7 +526,7 @@ static int rx_aal0(struct atm_vcc *vcc) DPRINTK(DEV_LABEL "(itf %d): trashing empty cell\n", vcc->dev->number); length = 0; - atomic_inc(&vcc->stats->rx_err); + atomic_inc_unchecked(&vcc->stats->rx_err); } else { length = ATM_CELL_SIZE-1; /* no HEC */ @@ -581,7 +581,7 @@ static int rx_aal5(struct atm_vcc *vcc) size); } eff = length = 0; - atomic_inc(&vcc->stats->rx_err); + atomic_inc_unchecked(&vcc->stats->rx_err); } else { size = (descr & MID_RED_COUNT)*(ATM_CELL_PAYLOAD >> 2); @@ -598,7 +598,7 @@ static int rx_aal5(struct atm_vcc *vcc) "(VCI=%d,length=%ld,size=%ld (descr 0x%lx))\n", vcc->dev->number,vcc->vci,length,size << 2,descr); length = eff = 0; - atomic_inc(&vcc->stats->rx_err); + atomic_inc_unchecked(&vcc->stats->rx_err); } } skb = eff ? atm_alloc_charge(vcc,eff << 2,GFP_ATOMIC) : NULL; @@ -771,7 +771,7 @@ rx_dequeued++; vcc->push(vcc,skb); pushed++; } - atomic_inc(&vcc->stats->rx); + atomic_inc_unchecked(&vcc->stats->rx); } wake_up(&eni_dev->rx_wait); } @@ -1228,7 +1228,7 @@ static void dequeue_tx(struct atm_dev *d PCI_DMA_TODEVICE); if (vcc->pop) vcc->pop(vcc,skb); else dev_kfree_skb_irq(skb); - atomic_inc(&vcc->stats->tx); + atomic_inc_unchecked(&vcc->stats->tx); wake_up(&eni_dev->tx_wait); dma_complete++; } diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/atm/firestream.c linux-2.6.36.4-pax/drivers/atm/firestream.c --- linux-2.6.36.4/drivers/atm/firestream.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/atm/firestream.c 2010-10-27 22:58:07.000000000 +0200 @@ -749,7 +749,7 @@ static void process_txdone_queue (struct } } - atomic_inc(&ATM_SKB(skb)->vcc->stats->tx); + atomic_inc_unchecked(&ATM_SKB(skb)->vcc->stats->tx); fs_dprintk (FS_DEBUG_TXMEM, "i"); fs_dprintk (FS_DEBUG_ALLOC, "Free t-skb: %p\n", skb); @@ -816,7 +816,7 @@ static void process_incoming (struct fs_ #endif skb_put (skb, qe->p1 & 0xffff); ATM_SKB(skb)->vcc = atm_vcc; - atomic_inc(&atm_vcc->stats->rx); + atomic_inc_unchecked(&atm_vcc->stats->rx); __net_timestamp(skb); fs_dprintk (FS_DEBUG_ALLOC, "Free rec-skb: %p (pushed)\n", skb); atm_vcc->push (atm_vcc, skb); @@ -837,12 +837,12 @@ static void process_incoming (struct fs_ kfree (pe); } if (atm_vcc) - atomic_inc(&atm_vcc->stats->rx_drop); + atomic_inc_unchecked(&atm_vcc->stats->rx_drop); break; case 0x1f: /* Reassembly abort: no buffers. */ /* Silently increment error counter. */ if (atm_vcc) - atomic_inc(&atm_vcc->stats->rx_drop); + atomic_inc_unchecked(&atm_vcc->stats->rx_drop); break; default: /* Hmm. Haven't written the code to handle the others yet... -- REW */ printk (KERN_WARNING "Don't know what to do with RX status %x: %s.\n", diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/atm/fore200e.c linux-2.6.36.4-pax/drivers/atm/fore200e.c --- linux-2.6.36.4/drivers/atm/fore200e.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/atm/fore200e.c 2010-10-27 22:58:07.000000000 +0200 @@ -933,9 +933,9 @@ fore200e_tx_irq(struct fore200e* fore200 #endif /* check error condition */ if (*entry->status & STATUS_ERROR) - atomic_inc(&vcc->stats->tx_err); + atomic_inc_unchecked(&vcc->stats->tx_err); else - atomic_inc(&vcc->stats->tx); + atomic_inc_unchecked(&vcc->stats->tx); } } @@ -1084,7 +1084,7 @@ fore200e_push_rpd(struct fore200e* fore2 if (skb == NULL) { DPRINTK(2, "unable to alloc new skb, rx PDU length = %d\n", pdu_len); - atomic_inc(&vcc->stats->rx_drop); + atomic_inc_unchecked(&vcc->stats->rx_drop); return -ENOMEM; } @@ -1127,14 +1127,14 @@ fore200e_push_rpd(struct fore200e* fore2 dev_kfree_skb_any(skb); - atomic_inc(&vcc->stats->rx_drop); + atomic_inc_unchecked(&vcc->stats->rx_drop); return -ENOMEM; } ASSERT(atomic_read(&sk_atm(vcc)->sk_wmem_alloc) >= 0); vcc->push(vcc, skb); - atomic_inc(&vcc->stats->rx); + atomic_inc_unchecked(&vcc->stats->rx); ASSERT(atomic_read(&sk_atm(vcc)->sk_wmem_alloc) >= 0); @@ -1212,7 +1212,7 @@ fore200e_rx_irq(struct fore200e* fore200 DPRINTK(2, "damaged PDU on %d.%d.%d\n", fore200e->atm_dev->number, entry->rpd->atm_header.vpi, entry->rpd->atm_header.vci); - atomic_inc(&vcc->stats->rx_err); + atomic_inc_unchecked(&vcc->stats->rx_err); } } @@ -1657,7 +1657,7 @@ fore200e_send(struct atm_vcc *vcc, struc goto retry_here; } - atomic_inc(&vcc->stats->tx_err); + atomic_inc_unchecked(&vcc->stats->tx_err); fore200e->tx_sat++; DPRINTK(2, "tx queue of device %s is saturated, PDU dropped - heartbeat is %08x\n", diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/atm/he.c linux-2.6.36.4-pax/drivers/atm/he.c --- linux-2.6.36.4/drivers/atm/he.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/atm/he.c 2010-10-27 22:58:07.000000000 +0200 @@ -1709,7 +1709,7 @@ he_service_rbrq(struct he_dev *he_dev, i if (RBRQ_HBUF_ERR(he_dev->rbrq_head)) { hprintk("HBUF_ERR! (cid 0x%x)\n", cid); - atomic_inc(&vcc->stats->rx_drop); + atomic_inc_unchecked(&vcc->stats->rx_drop); goto return_host_buffers; } @@ -1736,7 +1736,7 @@ he_service_rbrq(struct he_dev *he_dev, i RBRQ_LEN_ERR(he_dev->rbrq_head) ? "LEN_ERR" : "", vcc->vpi, vcc->vci); - atomic_inc(&vcc->stats->rx_err); + atomic_inc_unchecked(&vcc->stats->rx_err); goto return_host_buffers; } @@ -1788,7 +1788,7 @@ he_service_rbrq(struct he_dev *he_dev, i vcc->push(vcc, skb); spin_lock(&he_dev->global_lock); - atomic_inc(&vcc->stats->rx); + atomic_inc_unchecked(&vcc->stats->rx); return_host_buffers: ++pdus_assembled; @@ -2114,7 +2114,7 @@ __enqueue_tpd(struct he_dev *he_dev, str tpd->vcc->pop(tpd->vcc, tpd->skb); else dev_kfree_skb_any(tpd->skb); - atomic_inc(&tpd->vcc->stats->tx_err); + atomic_inc_unchecked(&tpd->vcc->stats->tx_err); } pci_pool_free(he_dev->tpd_pool, tpd, TPD_ADDR(tpd->status)); return; @@ -2526,7 +2526,7 @@ he_send(struct atm_vcc *vcc, struct sk_b vcc->pop(vcc, skb); else dev_kfree_skb_any(skb); - atomic_inc(&vcc->stats->tx_err); + atomic_inc_unchecked(&vcc->stats->tx_err); return -EINVAL; } @@ -2537,7 +2537,7 @@ he_send(struct atm_vcc *vcc, struct sk_b vcc->pop(vcc, skb); else dev_kfree_skb_any(skb); - atomic_inc(&vcc->stats->tx_err); + atomic_inc_unchecked(&vcc->stats->tx_err); return -EINVAL; } #endif @@ -2549,7 +2549,7 @@ he_send(struct atm_vcc *vcc, struct sk_b vcc->pop(vcc, skb); else dev_kfree_skb_any(skb); - atomic_inc(&vcc->stats->tx_err); + atomic_inc_unchecked(&vcc->stats->tx_err); spin_unlock_irqrestore(&he_dev->global_lock, flags); return -ENOMEM; } @@ -2591,7 +2591,7 @@ he_send(struct atm_vcc *vcc, struct sk_b vcc->pop(vcc, skb); else dev_kfree_skb_any(skb); - atomic_inc(&vcc->stats->tx_err); + atomic_inc_unchecked(&vcc->stats->tx_err); spin_unlock_irqrestore(&he_dev->global_lock, flags); return -ENOMEM; } @@ -2622,7 +2622,7 @@ he_send(struct atm_vcc *vcc, struct sk_b __enqueue_tpd(he_dev, tpd, cid); spin_unlock_irqrestore(&he_dev->global_lock, flags); - atomic_inc(&vcc->stats->tx); + atomic_inc_unchecked(&vcc->stats->tx); return 0; } diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/atm/horizon.c linux-2.6.36.4-pax/drivers/atm/horizon.c --- linux-2.6.36.4/drivers/atm/horizon.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/atm/horizon.c 2010-10-27 22:58:07.000000000 +0200 @@ -1034,7 +1034,7 @@ static void rx_schedule (hrz_dev * dev, { struct atm_vcc * vcc = ATM_SKB(skb)->vcc; // VC layer stats - atomic_inc(&vcc->stats->rx); + atomic_inc_unchecked(&vcc->stats->rx); __net_timestamp(skb); // end of our responsability vcc->push (vcc, skb); @@ -1186,7 +1186,7 @@ static void tx_schedule (hrz_dev * const dev->tx_iovec = NULL; // VC layer stats - atomic_inc(&ATM_SKB(skb)->vcc->stats->tx); + atomic_inc_unchecked(&ATM_SKB(skb)->vcc->stats->tx); // free the skb hrz_kfree_skb (skb); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/atm/idt77252.c linux-2.6.36.4-pax/drivers/atm/idt77252.c --- linux-2.6.36.4/drivers/atm/idt77252.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/atm/idt77252.c 2010-10-27 22:58:07.000000000 +0200 @@ -811,7 +811,7 @@ drain_scq(struct idt77252_dev *card, str else dev_kfree_skb(skb); - atomic_inc(&vcc->stats->tx); + atomic_inc_unchecked(&vcc->stats->tx); } atomic_dec(&scq->used); @@ -1074,13 +1074,13 @@ dequeue_rx(struct idt77252_dev *card, st if ((sb = dev_alloc_skb(64)) == NULL) { printk("%s: Can't allocate buffers for aal0.\n", card->name); - atomic_add(i, &vcc->stats->rx_drop); + atomic_add_unchecked(i, &vcc->stats->rx_drop); break; } if (!atm_charge(vcc, sb->truesize)) { RXPRINTK("%s: atm_charge() dropped aal0 packets.\n", card->name); - atomic_add(i - 1, &vcc->stats->rx_drop); + atomic_add_unchecked(i - 1, &vcc->stats->rx_drop); dev_kfree_skb(sb); break; } @@ -1097,7 +1097,7 @@ dequeue_rx(struct idt77252_dev *card, st ATM_SKB(sb)->vcc = vcc; __net_timestamp(sb); vcc->push(vcc, sb); - atomic_inc(&vcc->stats->rx); + atomic_inc_unchecked(&vcc->stats->rx); cell += ATM_CELL_PAYLOAD; } @@ -1134,13 +1134,13 @@ dequeue_rx(struct idt77252_dev *card, st "(CDC: %08x)\n", card->name, len, rpp->len, readl(SAR_REG_CDC)); recycle_rx_pool_skb(card, rpp); - atomic_inc(&vcc->stats->rx_err); + atomic_inc_unchecked(&vcc->stats->rx_err); return; } if (stat & SAR_RSQE_CRC) { RXPRINTK("%s: AAL5 CRC error.\n", card->name); recycle_rx_pool_skb(card, rpp); - atomic_inc(&vcc->stats->rx_err); + atomic_inc_unchecked(&vcc->stats->rx_err); return; } if (skb_queue_len(&rpp->queue) > 1) { @@ -1151,7 +1151,7 @@ dequeue_rx(struct idt77252_dev *card, st RXPRINTK("%s: Can't alloc RX skb.\n", card->name); recycle_rx_pool_skb(card, rpp); - atomic_inc(&vcc->stats->rx_err); + atomic_inc_unchecked(&vcc->stats->rx_err); return; } if (!atm_charge(vcc, skb->truesize)) { @@ -1170,7 +1170,7 @@ dequeue_rx(struct idt77252_dev *card, st __net_timestamp(skb); vcc->push(vcc, skb); - atomic_inc(&vcc->stats->rx); + atomic_inc_unchecked(&vcc->stats->rx); return; } @@ -1192,7 +1192,7 @@ dequeue_rx(struct idt77252_dev *card, st __net_timestamp(skb); vcc->push(vcc, skb); - atomic_inc(&vcc->stats->rx); + atomic_inc_unchecked(&vcc->stats->rx); if (skb->truesize > SAR_FB_SIZE_3) add_rx_skb(card, 3, SAR_FB_SIZE_3, 1); @@ -1304,14 +1304,14 @@ idt77252_rx_raw(struct idt77252_dev *car if (vcc->qos.aal != ATM_AAL0) { RPRINTK("%s: raw cell for non AAL0 vc %u.%u\n", card->name, vpi, vci); - atomic_inc(&vcc->stats->rx_drop); + atomic_inc_unchecked(&vcc->stats->rx_drop); goto drop; } if ((sb = dev_alloc_skb(64)) == NULL) { printk("%s: Can't allocate buffers for AAL0.\n", card->name); - atomic_inc(&vcc->stats->rx_err); + atomic_inc_unchecked(&vcc->stats->rx_err); goto drop; } @@ -1330,7 +1330,7 @@ idt77252_rx_raw(struct idt77252_dev *car ATM_SKB(sb)->vcc = vcc; __net_timestamp(sb); vcc->push(vcc, sb); - atomic_inc(&vcc->stats->rx); + atomic_inc_unchecked(&vcc->stats->rx); drop: skb_pull(queue, 64); @@ -1955,13 +1955,13 @@ idt77252_send_skb(struct atm_vcc *vcc, s if (vc == NULL) { printk("%s: NULL connection in send().\n", card->name); - atomic_inc(&vcc->stats->tx_err); + atomic_inc_unchecked(&vcc->stats->tx_err); dev_kfree_skb(skb); return -EINVAL; } if (!test_bit(VCF_TX, &vc->flags)) { printk("%s: Trying to transmit on a non-tx VC.\n", card->name); - atomic_inc(&vcc->stats->tx_err); + atomic_inc_unchecked(&vcc->stats->tx_err); dev_kfree_skb(skb); return -EINVAL; } @@ -1973,14 +1973,14 @@ idt77252_send_skb(struct atm_vcc *vcc, s break; default: printk("%s: Unsupported AAL: %d\n", card->name, vcc->qos.aal); - atomic_inc(&vcc->stats->tx_err); + atomic_inc_unchecked(&vcc->stats->tx_err); dev_kfree_skb(skb); return -EINVAL; } if (skb_shinfo(skb)->nr_frags != 0) { printk("%s: No scatter-gather yet.\n", card->name); - atomic_inc(&vcc->stats->tx_err); + atomic_inc_unchecked(&vcc->stats->tx_err); dev_kfree_skb(skb); return -EINVAL; } @@ -1988,7 +1988,7 @@ idt77252_send_skb(struct atm_vcc *vcc, s err = queue_skb(card, vc, skb, oam); if (err) { - atomic_inc(&vcc->stats->tx_err); + atomic_inc_unchecked(&vcc->stats->tx_err); dev_kfree_skb(skb); return err; } @@ -2011,7 +2011,7 @@ idt77252_send_oam(struct atm_vcc *vcc, v skb = dev_alloc_skb(64); if (!skb) { printk("%s: Out of memory in send_oam().\n", card->name); - atomic_inc(&vcc->stats->tx_err); + atomic_inc_unchecked(&vcc->stats->tx_err); return -ENOMEM; } atomic_add(skb->truesize, &sk_atm(vcc)->sk_wmem_alloc); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/atm/iphase.c linux-2.6.36.4-pax/drivers/atm/iphase.c --- linux-2.6.36.4/drivers/atm/iphase.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/atm/iphase.c 2010-10-27 22:58:07.000000000 +0200 @@ -1124,7 +1124,7 @@ static int rx_pkt(struct atm_dev *dev) status = (u_short) (buf_desc_ptr->desc_mode); if (status & (RX_CER | RX_PTE | RX_OFL)) { - atomic_inc(&vcc->stats->rx_err); + atomic_inc_unchecked(&vcc->stats->rx_err); IF_ERR(printk("IA: bad packet, dropping it");) if (status & RX_CER) { IF_ERR(printk(" cause: packet CRC error\n");) @@ -1147,7 +1147,7 @@ static int rx_pkt(struct atm_dev *dev) len = dma_addr - buf_addr; if (len > iadev->rx_buf_sz) { printk("Over %d bytes sdu received, dropped!!!\n", iadev->rx_buf_sz); - atomic_inc(&vcc->stats->rx_err); + atomic_inc_unchecked(&vcc->stats->rx_err); goto out_free_desc; } @@ -1297,7 +1297,7 @@ static void rx_dle_intr(struct atm_dev * ia_vcc = INPH_IA_VCC(vcc); if (ia_vcc == NULL) { - atomic_inc(&vcc->stats->rx_err); + atomic_inc_unchecked(&vcc->stats->rx_err); dev_kfree_skb_any(skb); atm_return(vcc, atm_guess_pdu2truesize(len)); goto INCR_DLE; @@ -1309,7 +1309,7 @@ static void rx_dle_intr(struct atm_dev * if ((length > iadev->rx_buf_sz) || (length > (skb->len - sizeof(struct cpcs_trailer)))) { - atomic_inc(&vcc->stats->rx_err); + atomic_inc_unchecked(&vcc->stats->rx_err); IF_ERR(printk("rx_dle_intr: Bad AAL5 trailer %d (skb len %d)", length, skb->len);) dev_kfree_skb_any(skb); @@ -1325,7 +1325,7 @@ static void rx_dle_intr(struct atm_dev * IF_RX(printk("rx_dle_intr: skb push");) vcc->push(vcc,skb); - atomic_inc(&vcc->stats->rx); + atomic_inc_unchecked(&vcc->stats->rx); iadev->rx_pkt_cnt++; } INCR_DLE: @@ -2807,15 +2807,15 @@ static int ia_ioctl(struct atm_dev *dev, { struct k_sonet_stats *stats; stats = &PRIV(_ia_dev[board])->sonet_stats; - printk("section_bip: %d\n", atomic_read(&stats->section_bip)); - printk("line_bip : %d\n", atomic_read(&stats->line_bip)); - printk("path_bip : %d\n", atomic_read(&stats->path_bip)); - printk("line_febe : %d\n", atomic_read(&stats->line_febe)); - printk("path_febe : %d\n", atomic_read(&stats->path_febe)); - printk("corr_hcs : %d\n", atomic_read(&stats->corr_hcs)); - printk("uncorr_hcs : %d\n", atomic_read(&stats->uncorr_hcs)); - printk("tx_cells : %d\n", atomic_read(&stats->tx_cells)); - printk("rx_cells : %d\n", atomic_read(&stats->rx_cells)); + printk("section_bip: %d\n", atomic_read_unchecked(&stats->section_bip)); + printk("line_bip : %d\n", atomic_read_unchecked(&stats->line_bip)); + printk("path_bip : %d\n", atomic_read_unchecked(&stats->path_bip)); + printk("line_febe : %d\n", atomic_read_unchecked(&stats->line_febe)); + printk("path_febe : %d\n", atomic_read_unchecked(&stats->path_febe)); + printk("corr_hcs : %d\n", atomic_read_unchecked(&stats->corr_hcs)); + printk("uncorr_hcs : %d\n", atomic_read_unchecked(&stats->uncorr_hcs)); + printk("tx_cells : %d\n", atomic_read_unchecked(&stats->tx_cells)); + printk("rx_cells : %d\n", atomic_read_unchecked(&stats->rx_cells)); } ia_cmds.status = 0; break; @@ -2920,7 +2920,7 @@ static int ia_pkt_tx (struct atm_vcc *vc if ((desc == 0) || (desc > iadev->num_tx_desc)) { IF_ERR(printk(DEV_LABEL "invalid desc for send: %d\n", desc);) - atomic_inc(&vcc->stats->tx); + atomic_inc_unchecked(&vcc->stats->tx); if (vcc->pop) vcc->pop(vcc, skb); else @@ -3025,14 +3025,14 @@ static int ia_pkt_tx (struct atm_vcc *vc ATM_DESC(skb) = vcc->vci; skb_queue_tail(&iadev->tx_dma_q, skb); - atomic_inc(&vcc->stats->tx); + atomic_inc_unchecked(&vcc->stats->tx); iadev->tx_pkt_cnt++; /* Increment transaction counter */ writel(2, iadev->dma+IPHASE5575_TX_COUNTER); #if 0 /* add flow control logic */ - if (atomic_read(&vcc->stats->tx) % 20 == 0) { + if (atomic_read_unchecked(&vcc->stats->tx) % 20 == 0) { if (iavcc->vc_desc_cnt > 10) { vcc->tx_quota = vcc->tx_quota * 3 / 4; printk("Tx1: vcc->tx_quota = %d \n", (u32)vcc->tx_quota ); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/atm/lanai.c linux-2.6.36.4-pax/drivers/atm/lanai.c --- linux-2.6.36.4/drivers/atm/lanai.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/atm/lanai.c 2010-10-27 22:58:07.000000000 +0200 @@ -1303,7 +1303,7 @@ static void lanai_send_one_aal5(struct l vcc_tx_add_aal5_trailer(lvcc, skb->len, 0, 0); lanai_endtx(lanai, lvcc); lanai_free_skb(lvcc->tx.atmvcc, skb); - atomic_inc(&lvcc->tx.atmvcc->stats->tx); + atomic_inc_unchecked(&lvcc->tx.atmvcc->stats->tx); } /* Try to fill the buffer - don't call unless there is backlog */ @@ -1426,7 +1426,7 @@ static void vcc_rx_aal5(struct lanai_vcc ATM_SKB(skb)->vcc = lvcc->rx.atmvcc; __net_timestamp(skb); lvcc->rx.atmvcc->push(lvcc->rx.atmvcc, skb); - atomic_inc(&lvcc->rx.atmvcc->stats->rx); + atomic_inc_unchecked(&lvcc->rx.atmvcc->stats->rx); out: lvcc->rx.buf.ptr = end; cardvcc_write(lvcc, endptr, vcc_rxreadptr); @@ -1668,7 +1668,7 @@ static int handle_service(struct lanai_d DPRINTK("(itf %d) got RX service entry 0x%X for non-AAL5 " "vcc %d\n", lanai->number, (unsigned int) s, vci); lanai->stats.service_rxnotaal5++; - atomic_inc(&lvcc->rx.atmvcc->stats->rx_err); + atomic_inc_unchecked(&lvcc->rx.atmvcc->stats->rx_err); return 0; } if (likely(!(s & (SERVICE_TRASH | SERVICE_STREAM | SERVICE_CRCERR)))) { @@ -1680,7 +1680,7 @@ static int handle_service(struct lanai_d int bytes; read_unlock(&vcc_sklist_lock); DPRINTK("got trashed rx pdu on vci %d\n", vci); - atomic_inc(&lvcc->rx.atmvcc->stats->rx_err); + atomic_inc_unchecked(&lvcc->rx.atmvcc->stats->rx_err); lvcc->stats.x.aal5.service_trash++; bytes = (SERVICE_GET_END(s) * 16) - (((unsigned long) lvcc->rx.buf.ptr) - @@ -1692,7 +1692,7 @@ static int handle_service(struct lanai_d } if (s & SERVICE_STREAM) { read_unlock(&vcc_sklist_lock); - atomic_inc(&lvcc->rx.atmvcc->stats->rx_err); + atomic_inc_unchecked(&lvcc->rx.atmvcc->stats->rx_err); lvcc->stats.x.aal5.service_stream++; printk(KERN_ERR DEV_LABEL "(itf %d): Got AAL5 stream " "PDU on VCI %d!\n", lanai->number, vci); @@ -1700,7 +1700,7 @@ static int handle_service(struct lanai_d return 0; } DPRINTK("got rx crc error on vci %d\n", vci); - atomic_inc(&lvcc->rx.atmvcc->stats->rx_err); + atomic_inc_unchecked(&lvcc->rx.atmvcc->stats->rx_err); lvcc->stats.x.aal5.service_rxcrc++; lvcc->rx.buf.ptr = &lvcc->rx.buf.start[SERVICE_GET_END(s) * 4]; cardvcc_write(lvcc, SERVICE_GET_END(s), vcc_rxreadptr); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/atm/nicstar.c linux-2.6.36.4-pax/drivers/atm/nicstar.c --- linux-2.6.36.4/drivers/atm/nicstar.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/atm/nicstar.c 2010-10-27 22:58:07.000000000 +0200 @@ -1653,7 +1653,7 @@ static int ns_send(struct atm_vcc *vcc, if ((vc = (vc_map *) vcc->dev_data) == NULL) { printk("nicstar%d: vcc->dev_data == NULL on ns_send().\n", card->index); - atomic_inc(&vcc->stats->tx_err); + atomic_inc_unchecked(&vcc->stats->tx_err); dev_kfree_skb_any(skb); return -EINVAL; } @@ -1661,7 +1661,7 @@ static int ns_send(struct atm_vcc *vcc, if (!vc->tx) { printk("nicstar%d: Trying to transmit on a non-tx VC.\n", card->index); - atomic_inc(&vcc->stats->tx_err); + atomic_inc_unchecked(&vcc->stats->tx_err); dev_kfree_skb_any(skb); return -EINVAL; } @@ -1669,14 +1669,14 @@ static int ns_send(struct atm_vcc *vcc, if (vcc->qos.aal != ATM_AAL5 && vcc->qos.aal != ATM_AAL0) { printk("nicstar%d: Only AAL0 and AAL5 are supported.\n", card->index); - atomic_inc(&vcc->stats->tx_err); + atomic_inc_unchecked(&vcc->stats->tx_err); dev_kfree_skb_any(skb); return -EINVAL; } if (skb_shinfo(skb)->nr_frags != 0) { printk("nicstar%d: No scatter-gather yet.\n", card->index); - atomic_inc(&vcc->stats->tx_err); + atomic_inc_unchecked(&vcc->stats->tx_err); dev_kfree_skb_any(skb); return -EINVAL; } @@ -1724,11 +1724,11 @@ static int ns_send(struct atm_vcc *vcc, } if (push_scqe(card, vc, scq, &scqe, skb) != 0) { - atomic_inc(&vcc->stats->tx_err); + atomic_inc_unchecked(&vcc->stats->tx_err); dev_kfree_skb_any(skb); return -EIO; } - atomic_inc(&vcc->stats->tx); + atomic_inc_unchecked(&vcc->stats->tx); return 0; } @@ -2045,14 +2045,14 @@ static void dequeue_rx(ns_dev * card, ns printk ("nicstar%d: Can't allocate buffers for aal0.\n", card->index); - atomic_add(i, &vcc->stats->rx_drop); + atomic_add_unchecked(i, &vcc->stats->rx_drop); break; } if (!atm_charge(vcc, sb->truesize)) { RXPRINTK ("nicstar%d: atm_charge() dropped aal0 packets.\n", card->index); - atomic_add(i - 1, &vcc->stats->rx_drop); /* already increased by 1 */ + atomic_add_unchecked(i - 1, &vcc->stats->rx_drop); /* already increased by 1 */ dev_kfree_skb_any(sb); break; } @@ -2067,7 +2067,7 @@ static void dequeue_rx(ns_dev * card, ns ATM_SKB(sb)->vcc = vcc; __net_timestamp(sb); vcc->push(vcc, sb); - atomic_inc(&vcc->stats->rx); + atomic_inc_unchecked(&vcc->stats->rx); cell += ATM_CELL_PAYLOAD; } @@ -2084,7 +2084,7 @@ static void dequeue_rx(ns_dev * card, ns if (iovb == NULL) { printk("nicstar%d: Out of iovec buffers.\n", card->index); - atomic_inc(&vcc->stats->rx_drop); + atomic_inc_unchecked(&vcc->stats->rx_drop); recycle_rx_buf(card, skb); return; } @@ -2108,7 +2108,7 @@ static void dequeue_rx(ns_dev * card, ns small or large buffer itself. */ } else if (NS_PRV_IOVCNT(iovb) >= NS_MAX_IOVECS) { printk("nicstar%d: received too big AAL5 SDU.\n", card->index); - atomic_inc(&vcc->stats->rx_err); + atomic_inc_unchecked(&vcc->stats->rx_err); recycle_iovec_rx_bufs(card, (struct iovec *)iovb->data, NS_MAX_IOVECS); NS_PRV_IOVCNT(iovb) = 0; @@ -2128,7 +2128,7 @@ static void dequeue_rx(ns_dev * card, ns ("nicstar%d: Expected a small buffer, and this is not one.\n", card->index); which_list(card, skb); - atomic_inc(&vcc->stats->rx_err); + atomic_inc_unchecked(&vcc->stats->rx_err); recycle_rx_buf(card, skb); vc->rx_iov = NULL; recycle_iov_buf(card, iovb); @@ -2141,7 +2141,7 @@ static void dequeue_rx(ns_dev * card, ns ("nicstar%d: Expected a large buffer, and this is not one.\n", card->index); which_list(card, skb); - atomic_inc(&vcc->stats->rx_err); + atomic_inc_unchecked(&vcc->stats->rx_err); recycle_iovec_rx_bufs(card, (struct iovec *)iovb->data, NS_PRV_IOVCNT(iovb)); vc->rx_iov = NULL; @@ -2164,7 +2164,7 @@ static void dequeue_rx(ns_dev * card, ns printk(" - PDU size mismatch.\n"); else printk(".\n"); - atomic_inc(&vcc->stats->rx_err); + atomic_inc_unchecked(&vcc->stats->rx_err); recycle_iovec_rx_bufs(card, (struct iovec *)iovb->data, NS_PRV_IOVCNT(iovb)); vc->rx_iov = NULL; @@ -2178,7 +2178,7 @@ static void dequeue_rx(ns_dev * card, ns /* skb points to a small buffer */ if (!atm_charge(vcc, skb->truesize)) { push_rxbufs(card, skb); - atomic_inc(&vcc->stats->rx_drop); + atomic_inc_unchecked(&vcc->stats->rx_drop); } else { skb_put(skb, len); dequeue_sm_buf(card, skb); @@ -2188,7 +2188,7 @@ static void dequeue_rx(ns_dev * card, ns ATM_SKB(skb)->vcc = vcc; __net_timestamp(skb); vcc->push(vcc, skb); - atomic_inc(&vcc->stats->rx); + atomic_inc_unchecked(&vcc->stats->rx); } } else if (NS_PRV_IOVCNT(iovb) == 2) { /* One small plus one large buffer */ struct sk_buff *sb; @@ -2199,7 +2199,7 @@ static void dequeue_rx(ns_dev * card, ns if (len <= NS_SMBUFSIZE) { if (!atm_charge(vcc, sb->truesize)) { push_rxbufs(card, sb); - atomic_inc(&vcc->stats->rx_drop); + atomic_inc_unchecked(&vcc->stats->rx_drop); } else { skb_put(sb, len); dequeue_sm_buf(card, sb); @@ -2209,7 +2209,7 @@ static void dequeue_rx(ns_dev * card, ns ATM_SKB(sb)->vcc = vcc; __net_timestamp(sb); vcc->push(vcc, sb); - atomic_inc(&vcc->stats->rx); + atomic_inc_unchecked(&vcc->stats->rx); } push_rxbufs(card, skb); @@ -2218,7 +2218,7 @@ static void dequeue_rx(ns_dev * card, ns if (!atm_charge(vcc, skb->truesize)) { push_rxbufs(card, skb); - atomic_inc(&vcc->stats->rx_drop); + atomic_inc_unchecked(&vcc->stats->rx_drop); } else { dequeue_lg_buf(card, skb); #ifdef NS_USE_DESTRUCTORS @@ -2231,7 +2231,7 @@ static void dequeue_rx(ns_dev * card, ns ATM_SKB(skb)->vcc = vcc; __net_timestamp(skb); vcc->push(vcc, skb); - atomic_inc(&vcc->stats->rx); + atomic_inc_unchecked(&vcc->stats->rx); } push_rxbufs(card, sb); @@ -2252,7 +2252,7 @@ static void dequeue_rx(ns_dev * card, ns printk ("nicstar%d: Out of huge buffers.\n", card->index); - atomic_inc(&vcc->stats->rx_drop); + atomic_inc_unchecked(&vcc->stats->rx_drop); recycle_iovec_rx_bufs(card, (struct iovec *) iovb->data, @@ -2303,7 +2303,7 @@ static void dequeue_rx(ns_dev * card, ns card->hbpool.count++; } else dev_kfree_skb_any(hb); - atomic_inc(&vcc->stats->rx_drop); + atomic_inc_unchecked(&vcc->stats->rx_drop); } else { /* Copy the small buffer to the huge buffer */ sb = (struct sk_buff *)iov->iov_base; @@ -2340,7 +2340,7 @@ static void dequeue_rx(ns_dev * card, ns #endif /* NS_USE_DESTRUCTORS */ __net_timestamp(hb); vcc->push(vcc, hb); - atomic_inc(&vcc->stats->rx); + atomic_inc_unchecked(&vcc->stats->rx); } } diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/atm/solos-pci.c linux-2.6.36.4-pax/drivers/atm/solos-pci.c --- linux-2.6.36.4/drivers/atm/solos-pci.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/atm/solos-pci.c 2010-10-27 22:58:07.000000000 +0200 @@ -717,7 +717,7 @@ void solos_bh(unsigned long card_arg) } atm_charge(vcc, skb->truesize); vcc->push(vcc, skb); - atomic_inc(&vcc->stats->rx); + atomic_inc_unchecked(&vcc->stats->rx); break; case PKT_STATUS: @@ -1025,7 +1025,7 @@ static uint32_t fpga_tx(struct solos_car vcc = SKB_CB(oldskb)->vcc; if (vcc) { - atomic_inc(&vcc->stats->tx); + atomic_inc_unchecked(&vcc->stats->tx); solos_pop(vcc, oldskb); } else dev_kfree_skb_irq(oldskb); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/atm/suni.c linux-2.6.36.4-pax/drivers/atm/suni.c --- linux-2.6.36.4/drivers/atm/suni.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/atm/suni.c 2010-10-27 22:58:07.000000000 +0200 @@ -50,8 +50,8 @@ static DEFINE_SPINLOCK(sunis_lock); #define ADD_LIMITED(s,v) \ - atomic_add((v),&stats->s); \ - if (atomic_read(&stats->s) < 0) atomic_set(&stats->s,INT_MAX); + atomic_add_unchecked((v),&stats->s); \ + if (atomic_read_unchecked(&stats->s) < 0) atomic_set_unchecked(&stats->s,INT_MAX); static void suni_hz(unsigned long from_timer) diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/atm/uPD98402.c linux-2.6.36.4-pax/drivers/atm/uPD98402.c --- linux-2.6.36.4/drivers/atm/uPD98402.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/atm/uPD98402.c 2010-10-27 22:58:07.000000000 +0200 @@ -42,7 +42,7 @@ static int fetch_stats(struct atm_dev *d struct sonet_stats tmp; int error = 0; - atomic_add(GET(HECCT),&PRIV(dev)->sonet_stats.uncorr_hcs); + atomic_add_unchecked(GET(HECCT),&PRIV(dev)->sonet_stats.uncorr_hcs); sonet_copy_stats(&PRIV(dev)->sonet_stats,&tmp); if (arg) error = copy_to_user(arg,&tmp,sizeof(tmp)); if (zero && !error) { @@ -161,9 +161,9 @@ static int uPD98402_ioctl(struct atm_dev #define ADD_LIMITED(s,v) \ - { atomic_add(GET(v),&PRIV(dev)->sonet_stats.s); \ - if (atomic_read(&PRIV(dev)->sonet_stats.s) < 0) \ - atomic_set(&PRIV(dev)->sonet_stats.s,INT_MAX); } + { atomic_add_unchecked(GET(v),&PRIV(dev)->sonet_stats.s); \ + if (atomic_read_unchecked(&PRIV(dev)->sonet_stats.s) < 0) \ + atomic_set_unchecked(&PRIV(dev)->sonet_stats.s,INT_MAX); } static void stat_event(struct atm_dev *dev) @@ -194,7 +194,7 @@ static void uPD98402_int(struct atm_dev if (reason & uPD98402_INT_PFM) stat_event(dev); if (reason & uPD98402_INT_PCO) { (void) GET(PCOCR); /* clear interrupt cause */ - atomic_add(GET(HECCT), + atomic_add_unchecked(GET(HECCT), &PRIV(dev)->sonet_stats.uncorr_hcs); } if ((reason & uPD98402_INT_RFO) && @@ -222,9 +222,9 @@ static int uPD98402_start(struct atm_dev PUT(~(uPD98402_INT_PFM | uPD98402_INT_ALM | uPD98402_INT_RFO | uPD98402_INT_LOS),PIMR); /* enable them */ (void) fetch_stats(dev,NULL,1); /* clear kernel counters */ - atomic_set(&PRIV(dev)->sonet_stats.corr_hcs,-1); - atomic_set(&PRIV(dev)->sonet_stats.tx_cells,-1); - atomic_set(&PRIV(dev)->sonet_stats.rx_cells,-1); + atomic_set_unchecked(&PRIV(dev)->sonet_stats.corr_hcs,-1); + atomic_set_unchecked(&PRIV(dev)->sonet_stats.tx_cells,-1); + atomic_set_unchecked(&PRIV(dev)->sonet_stats.rx_cells,-1); return 0; } diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/atm/zatm.c linux-2.6.36.4-pax/drivers/atm/zatm.c --- linux-2.6.36.4/drivers/atm/zatm.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/atm/zatm.c 2010-10-27 22:58:07.000000000 +0200 @@ -459,7 +459,7 @@ printk("dummy: 0x%08lx, 0x%08lx\n",dummy } if (!size) { dev_kfree_skb_irq(skb); - if (vcc) atomic_inc(&vcc->stats->rx_err); + if (vcc) atomic_inc_unchecked(&vcc->stats->rx_err); continue; } if (!atm_charge(vcc,skb->truesize)) { @@ -469,7 +469,7 @@ printk("dummy: 0x%08lx, 0x%08lx\n",dummy skb->len = size; ATM_SKB(skb)->vcc = vcc; vcc->push(vcc,skb); - atomic_inc(&vcc->stats->rx); + atomic_inc_unchecked(&vcc->stats->rx); } zout(pos & 0xffff,MTA(mbx)); #if 0 /* probably a stupid idea */ @@ -733,7 +733,7 @@ if (*ZATM_PRV_DSC(skb) != (uPD98401_TXPD skb_queue_head(&zatm_vcc->backlog,skb); break; } - atomic_inc(&vcc->stats->tx); + atomic_inc_unchecked(&vcc->stats->tx); wake_up(&zatm_vcc->tx_wait); } diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/char/agp/frontend.c linux-2.6.36.4-pax/drivers/char/agp/frontend.c --- linux-2.6.36.4/drivers/char/agp/frontend.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/char/agp/frontend.c 2010-10-27 22:58:07.000000000 +0200 @@ -818,7 +818,7 @@ static int agpioc_reserve_wrap(struct ag if (copy_from_user(&reserve, arg, sizeof(struct agp_region))) return -EFAULT; - if ((unsigned) reserve.seg_count >= ~0U/sizeof(struct agp_segment)) + if ((unsigned) reserve.seg_count >= ~0U/sizeof(struct agp_segment_priv)) return -EFAULT; client = agp_find_client_by_pid(reserve.pid); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/char/agp/intel-agp.c linux-2.6.36.4-pax/drivers/char/agp/intel-agp.c --- linux-2.6.36.4/drivers/char/agp/intel-agp.c 2011-02-24 20:16:19.000000000 +0100 +++ linux-2.6.36.4-pax/drivers/char/agp/intel-agp.c 2011-02-24 20:27:37.000000000 +0100 @@ -1062,7 +1062,7 @@ static struct pci_device_id agp_intel_pc ID(PCI_DEVICE_ID_INTEL_SANDYBRIDGE_HB), ID(PCI_DEVICE_ID_INTEL_SANDYBRIDGE_M_HB), ID(PCI_DEVICE_ID_INTEL_SANDYBRIDGE_S_HB), - { } + { 0, 0, 0, 0, 0, 0, 0 } }; MODULE_DEVICE_TABLE(pci, agp_intel_pci_table); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/char/hpet.c linux-2.6.36.4-pax/drivers/char/hpet.c --- linux-2.6.36.4/drivers/char/hpet.c 2010-12-16 12:42:50.000000000 +0100 +++ linux-2.6.36.4-pax/drivers/char/hpet.c 2010-12-16 12:43:29.000000000 +0100 @@ -429,7 +429,7 @@ static int hpet_release(struct inode *in return 0; } -static int hpet_ioctl_common(struct hpet_dev *, int, unsigned long, int); +static int hpet_ioctl_common(struct hpet_dev *, unsigned int, unsigned long, int); static long hpet_ioctl(struct file *file, unsigned int cmd, unsigned long arg) @@ -568,7 +568,7 @@ static inline unsigned long hpet_time_di } static int -hpet_ioctl_common(struct hpet_dev *devp, int cmd, unsigned long arg, int kernel) +hpet_ioctl_common(struct hpet_dev *devp, unsigned int cmd, unsigned long arg, int kernel) { struct hpet_timer __iomem *timer; struct hpet __iomem *hpet; @@ -1015,7 +1015,7 @@ static struct acpi_driver hpet_acpi_driv }, }; -static struct miscdevice hpet_misc = { HPET_MINOR, "hpet", &hpet_fops }; +static struct miscdevice hpet_misc = { HPET_MINOR, "hpet", &hpet_fops, {NULL, NULL}, NULL, NULL }; static int __init hpet_init(void) { diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/char/hvc_console.h linux-2.6.36.4-pax/drivers/char/hvc_console.h --- linux-2.6.36.4/drivers/char/hvc_console.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/char/hvc_console.h 2010-10-27 22:58:44.000000000 +0200 @@ -82,6 +82,7 @@ extern int hvc_instantiate(uint32_t vter /* register a vterm for hvc tty operation (module_init or hotplug add) */ extern struct hvc_struct * hvc_alloc(uint32_t vtermno, int data, const struct hv_ops *ops, int outbuf_size); + /* remove a vterm from hvc tty operation (module_exit or hotplug remove) */ extern int hvc_remove(struct hvc_struct *hp); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/char/hvcs.c linux-2.6.36.4-pax/drivers/char/hvcs.c --- linux-2.6.36.4/drivers/char/hvcs.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/char/hvcs.c 2011-01-25 20:15:13.000000000 +0100 @@ -83,6 +83,7 @@ #include #include #include +#include /* * 1.3.0 -> 1.3.1 In hvcs_open memset(..,0x00,..) instead of memset(..,0x3F,00). @@ -270,7 +271,7 @@ struct hvcs_struct { unsigned int index; struct tty_struct *tty; - int open_count; + local_t open_count; /* * Used to tell the driver kernel_thread what operations need to take @@ -420,7 +421,7 @@ static ssize_t hvcs_vterm_state_store(st spin_lock_irqsave(&hvcsd->lock, flags); - if (hvcsd->open_count > 0) { + if (local_read(&hvcsd->open_count) > 0) { spin_unlock_irqrestore(&hvcsd->lock, flags); printk(KERN_INFO "HVCS: vterm state unchanged. " "The hvcs device node is still in use.\n"); @@ -1136,7 +1137,7 @@ static int hvcs_open(struct tty_struct * if ((retval = hvcs_partner_connect(hvcsd))) goto error_release; - hvcsd->open_count = 1; + local_set(&hvcsd->open_count, 1); hvcsd->tty = tty; tty->driver_data = hvcsd; @@ -1170,7 +1171,7 @@ fast_open: spin_lock_irqsave(&hvcsd->lock, flags); kref_get(&hvcsd->kref); - hvcsd->open_count++; + local_inc(&hvcsd->open_count); hvcsd->todo_mask |= HVCS_SCHED_READ; spin_unlock_irqrestore(&hvcsd->lock, flags); @@ -1214,7 +1215,7 @@ static void hvcs_close(struct tty_struct hvcsd = tty->driver_data; spin_lock_irqsave(&hvcsd->lock, flags); - if (--hvcsd->open_count == 0) { + if (local_dec_and_test(&hvcsd->open_count)) { vio_disable_interrupts(hvcsd->vdev); @@ -1240,10 +1241,10 @@ static void hvcs_close(struct tty_struct free_irq(irq, hvcsd); kref_put(&hvcsd->kref, destroy_hvcs_struct); return; - } else if (hvcsd->open_count < 0) { + } else if (local_read(&hvcsd->open_count) < 0) { printk(KERN_ERR "HVCS: vty-server@%X open_count: %d" " is missmanaged.\n", - hvcsd->vdev->unit_address, hvcsd->open_count); + hvcsd->vdev->unit_address, local_read(&hvcsd->open_count)); } spin_unlock_irqrestore(&hvcsd->lock, flags); @@ -1259,7 +1260,7 @@ static void hvcs_hangup(struct tty_struc spin_lock_irqsave(&hvcsd->lock, flags); /* Preserve this so that we know how many kref refs to put */ - temp_open_count = hvcsd->open_count; + temp_open_count = local_read(&hvcsd->open_count); /* * Don't kref put inside the spinlock because the destruction @@ -1274,7 +1275,7 @@ static void hvcs_hangup(struct tty_struc hvcsd->tty->driver_data = NULL; hvcsd->tty = NULL; - hvcsd->open_count = 0; + local_set(&hvcsd->open_count, 0); /* This will drop any buffered data on the floor which is OK in a hangup * scenario. */ @@ -1345,7 +1346,7 @@ static int hvcs_write(struct tty_struct * the middle of a write operation? This is a crummy place to do this * but we want to keep it all in the spinlock. */ - if (hvcsd->open_count <= 0) { + if (local_read(&hvcsd->open_count) <= 0) { spin_unlock_irqrestore(&hvcsd->lock, flags); return -ENODEV; } @@ -1419,7 +1420,7 @@ static int hvcs_write_room(struct tty_st { struct hvcs_struct *hvcsd = tty->driver_data; - if (!hvcsd || hvcsd->open_count <= 0) + if (!hvcsd || local_read(&hvcsd->open_count) <= 0) return 0; return HVCS_BUFF_LEN - hvcsd->chars_in_buffer; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/char/ipmi/ipmi_msghandler.c linux-2.6.36.4-pax/drivers/char/ipmi/ipmi_msghandler.c --- linux-2.6.36.4/drivers/char/ipmi/ipmi_msghandler.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/char/ipmi/ipmi_msghandler.c 2010-10-27 22:58:07.000000000 +0200 @@ -414,7 +414,7 @@ struct ipmi_smi { struct proc_dir_entry *proc_dir; char proc_dir_name[10]; - atomic_t stats[IPMI_NUM_STATS]; + atomic_unchecked_t stats[IPMI_NUM_STATS]; /* * run_to_completion duplicate of smb_info, smi_info @@ -447,9 +447,9 @@ static DEFINE_MUTEX(smi_watchers_mutex); #define ipmi_inc_stat(intf, stat) \ - atomic_inc(&(intf)->stats[IPMI_STAT_ ## stat]) + atomic_inc_unchecked(&(intf)->stats[IPMI_STAT_ ## stat]) #define ipmi_get_stat(intf, stat) \ - ((unsigned int) atomic_read(&(intf)->stats[IPMI_STAT_ ## stat])) + ((unsigned int) atomic_read_unchecked(&(intf)->stats[IPMI_STAT_ ## stat])) static int is_lan_addr(struct ipmi_addr *addr) { @@ -2817,7 +2817,7 @@ int ipmi_register_smi(struct ipmi_smi_ha INIT_LIST_HEAD(&intf->cmd_rcvrs); init_waitqueue_head(&intf->waitq); for (i = 0; i < IPMI_NUM_STATS; i++) - atomic_set(&intf->stats[i], 0); + atomic_set_unchecked(&intf->stats[i], 0); intf->proc_dir = NULL; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/char/ipmi/ipmi_si_intf.c linux-2.6.36.4-pax/drivers/char/ipmi/ipmi_si_intf.c --- linux-2.6.36.4/drivers/char/ipmi/ipmi_si_intf.c 2011-02-24 20:16:19.000000000 +0100 +++ linux-2.6.36.4-pax/drivers/char/ipmi/ipmi_si_intf.c 2011-02-24 20:27:37.000000000 +0100 @@ -286,7 +286,7 @@ struct smi_info { unsigned char slave_addr; /* Counters and things for the proc filesystem. */ - atomic_t stats[SI_NUM_STATS]; + atomic_unchecked_t stats[SI_NUM_STATS]; struct task_struct *thread; @@ -294,9 +294,9 @@ struct smi_info { }; #define smi_inc_stat(smi, stat) \ - atomic_inc(&(smi)->stats[SI_STAT_ ## stat]) + atomic_inc_unchecked(&(smi)->stats[SI_STAT_ ## stat]) #define smi_get_stat(smi, stat) \ - ((unsigned int) atomic_read(&(smi)->stats[SI_STAT_ ## stat])) + ((unsigned int) atomic_read_unchecked(&(smi)->stats[SI_STAT_ ## stat])) #define SI_MAX_PARMS 4 @@ -3180,7 +3180,7 @@ static int try_smi_init(struct smi_info atomic_set(&new_smi->req_events, 0); new_smi->run_to_completion = 0; for (i = 0; i < SI_NUM_STATS; i++) - atomic_set(&new_smi->stats[i], 0); + atomic_set_unchecked(&new_smi->stats[i], 0); new_smi->interrupt_disabled = 1; atomic_set(&new_smi->stop_operation, 0); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/char/keyboard.c linux-2.6.36.4-pax/drivers/char/keyboard.c --- linux-2.6.36.4/drivers/char/keyboard.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/char/keyboard.c 2010-10-27 22:58:07.000000000 +0200 @@ -1396,7 +1396,7 @@ static const struct input_device_id kbd_ .evbit = { BIT_MASK(EV_SND) }, }, - { }, /* Terminating entry */ + { 0 }, /* Terminating entry */ }; MODULE_DEVICE_TABLE(input, kbd_ids); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/char/mem.c linux-2.6.36.4-pax/drivers/char/mem.c --- linux-2.6.36.4/drivers/char/mem.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/char/mem.c 2010-10-27 22:58:07.000000000 +0200 @@ -120,6 +120,7 @@ static ssize_t read_mem(struct file *fil while (count > 0) { unsigned long remaining; + char *temp; sz = size_inside_page(p, count); @@ -135,7 +136,23 @@ static ssize_t read_mem(struct file *fil if (!ptr) return -EFAULT; - remaining = copy_to_user(buf, ptr, sz); +#ifdef CONFIG_PAX_USERCOPY + temp = kmalloc(sz, GFP_KERNEL); + if (!temp) { + unxlate_dev_mem_ptr(p, ptr); + return -ENOMEM; + } + memcpy(temp, ptr, sz); +#else + temp = ptr; +#endif + + remaining = copy_to_user(buf, temp, sz); + +#ifdef CONFIG_PAX_USERCOPY + kfree(temp); +#endif + unxlate_dev_mem_ptr(p, ptr); if (remaining) return -EFAULT; @@ -398,9 +415,8 @@ static ssize_t read_kmem(struct file *fi size_t count, loff_t *ppos) { unsigned long p = *ppos; - ssize_t low_count, read, sz; + ssize_t low_count, read, sz, err = 0; char * kbuf; /* k-addr because vread() takes vmlist_lock rwlock */ - int err = 0; read = 0; if (p < (unsigned long) high_memory) { @@ -422,6 +438,8 @@ static ssize_t read_kmem(struct file *fi } #endif while (low_count > 0) { + char *temp; + sz = size_inside_page(p, low_count); /* @@ -431,7 +449,22 @@ static ssize_t read_kmem(struct file *fi */ kbuf = xlate_dev_kmem_ptr((char *)p); - if (copy_to_user(buf, kbuf, sz)) +#ifdef CONFIG_PAX_USERCOPY + temp = kmalloc(sz, GFP_KERNEL); + if (!temp) + return -ENOMEM; + memcpy(temp, kbuf, sz); +#else + temp = kbuf; +#endif + + err = copy_to_user(buf, temp, sz); + +#ifdef CONFIG_PAX_USERCOPY + kfree(temp); +#endif + + if (err) return -EFAULT; buf += sz; p += sz; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/char/n_gsm.c linux-2.6.36.4-pax/drivers/char/n_gsm.c --- linux-2.6.36.4/drivers/char/n_gsm.c 2011-01-12 15:14:10.000000000 +0100 +++ linux-2.6.36.4-pax/drivers/char/n_gsm.c 2011-01-12 15:14:27.000000000 +0100 @@ -1579,7 +1579,7 @@ static struct gsm_dlci *gsm_dlci_alloc(s return NULL; spin_lock_init(&dlci->lock); dlci->fifo = &dlci->_fifo; - if (kfifo_alloc(&dlci->_fifo, 4096, GFP_KERNEL) < 0) { + if (kfifo_alloc(&dlci->_fifo, 4096, GFP_KERNEL)) { kfree(dlci); return NULL; } diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/char/n_tty.c linux-2.6.36.4-pax/drivers/char/n_tty.c --- linux-2.6.36.4/drivers/char/n_tty.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/char/n_tty.c 2010-10-27 22:58:07.000000000 +0200 @@ -2116,6 +2116,7 @@ void n_tty_inherit_ops(struct tty_ldisc_ { *ops = tty_ldisc_N_TTY; ops->owner = NULL; - ops->refcount = ops->flags = 0; + atomic_set(&ops->refcount, 0); + ops->flags = 0; } EXPORT_SYMBOL_GPL(n_tty_inherit_ops); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/char/nvram.c linux-2.6.36.4-pax/drivers/char/nvram.c --- linux-2.6.36.4/drivers/char/nvram.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/char/nvram.c 2010-10-27 22:58:07.000000000 +0200 @@ -245,7 +245,7 @@ static ssize_t nvram_read(struct file *f spin_unlock_irq(&rtc_lock); - if (copy_to_user(buf, contents, tmp - contents)) + if (tmp - contents > sizeof(contents) || copy_to_user(buf, contents, tmp - contents)) return -EFAULT; *ppos = i; @@ -434,7 +434,10 @@ static const struct file_operations nvra static struct miscdevice nvram_dev = { NVRAM_MINOR, "nvram", - &nvram_fops + &nvram_fops, + {NULL, NULL}, + NULL, + NULL }; static int __init nvram_init(void) diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/char/pcmcia/ipwireless/tty.c linux-2.6.36.4-pax/drivers/char/pcmcia/ipwireless/tty.c --- linux-2.6.36.4/drivers/char/pcmcia/ipwireless/tty.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/char/pcmcia/ipwireless/tty.c 2011-01-25 20:15:13.000000000 +0100 @@ -29,6 +29,7 @@ #include #include #include +#include #include "tty.h" #include "network.h" @@ -51,7 +52,7 @@ struct ipw_tty { int tty_type; struct ipw_network *network; struct tty_struct *linux_tty; - int open_count; + local_t open_count; unsigned int control_lines; struct mutex ipw_tty_mutex; int tx_bytes_queued; @@ -127,10 +128,10 @@ static int ipw_open(struct tty_struct *l mutex_unlock(&tty->ipw_tty_mutex); return -ENODEV; } - if (tty->open_count == 0) + if (local_read(&tty->open_count) == 0) tty->tx_bytes_queued = 0; - tty->open_count++; + local_inc(&tty->open_count); tty->linux_tty = linux_tty; linux_tty->driver_data = tty; @@ -146,9 +147,7 @@ static int ipw_open(struct tty_struct *l static void do_ipw_close(struct ipw_tty *tty) { - tty->open_count--; - - if (tty->open_count == 0) { + if (local_dec_return(&tty->open_count) == 0) { struct tty_struct *linux_tty = tty->linux_tty; if (linux_tty != NULL) { @@ -169,7 +168,7 @@ static void ipw_hangup(struct tty_struct return; mutex_lock(&tty->ipw_tty_mutex); - if (tty->open_count == 0) { + if (local_read(&tty->open_count) == 0) { mutex_unlock(&tty->ipw_tty_mutex); return; } @@ -198,7 +197,7 @@ void ipwireless_tty_received(struct ipw_ return; } - if (!tty->open_count) { + if (!local_read(&tty->open_count)) { mutex_unlock(&tty->ipw_tty_mutex); return; } @@ -240,7 +239,7 @@ static int ipw_write(struct tty_struct * return -ENODEV; mutex_lock(&tty->ipw_tty_mutex); - if (!tty->open_count) { + if (!local_read(&tty->open_count)) { mutex_unlock(&tty->ipw_tty_mutex); return -EINVAL; } @@ -280,7 +279,7 @@ static int ipw_write_room(struct tty_str if (!tty) return -ENODEV; - if (!tty->open_count) + if (!local_read(&tty->open_count)) return -EINVAL; room = IPWIRELESS_TX_QUEUE_SIZE - tty->tx_bytes_queued; @@ -322,7 +321,7 @@ static int ipw_chars_in_buffer(struct tt if (!tty) return 0; - if (!tty->open_count) + if (!local_read(&tty->open_count)) return 0; return tty->tx_bytes_queued; @@ -403,7 +402,7 @@ static int ipw_tiocmget(struct tty_struc if (!tty) return -ENODEV; - if (!tty->open_count) + if (!local_read(&tty->open_count)) return -EINVAL; return get_control_lines(tty); @@ -419,7 +418,7 @@ ipw_tiocmset(struct tty_struct *linux_tt if (!tty) return -ENODEV; - if (!tty->open_count) + if (!local_read(&tty->open_count)) return -EINVAL; return set_control_lines(tty, set, clear); @@ -433,7 +432,7 @@ static int ipw_ioctl(struct tty_struct * if (!tty) return -ENODEV; - if (!tty->open_count) + if (!local_read(&tty->open_count)) return -EINVAL; /* FIXME: Exactly how is the tty object locked here .. */ @@ -582,7 +581,7 @@ void ipwireless_tty_free(struct ipw_tty against a parallel ioctl etc */ mutex_lock(&ttyj->ipw_tty_mutex); } - while (ttyj->open_count) + while (local_read(&ttyj->open_count)) do_ipw_close(ttyj); ipwireless_disassociate_network_ttys(network, ttyj->channel_idx); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/char/pty.c linux-2.6.36.4-pax/drivers/char/pty.c --- linux-2.6.36.4/drivers/char/pty.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/char/pty.c 2010-10-27 22:58:44.000000000 +0200 @@ -698,7 +698,18 @@ out: return retval; } -static struct file_operations ptmx_fops; +static const struct file_operations ptmx_fops = { + .llseek = no_llseek, + .read = tty_read, + .write = tty_write, + .poll = tty_poll, + .unlocked_ioctl = tty_ioctl, + .compat_ioctl = tty_compat_ioctl, + .open = ptmx_open, + .release = tty_release, + .fasync = tty_fasync, +}; + static void __init unix98_pty_init(void) { @@ -752,9 +763,6 @@ static void __init unix98_pty_init(void) register_sysctl_table(pty_root_table); /* Now create the /dev/ptmx special device */ - tty_default_fops(&ptmx_fops); - ptmx_fops.open = ptmx_open; - cdev_init(&ptmx_cdev, &ptmx_fops); if (cdev_add(&ptmx_cdev, MKDEV(TTYAUX_MAJOR, 2), 1) || register_chrdev_region(MKDEV(TTYAUX_MAJOR, 2), 1, "/dev/ptmx") < 0) diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/char/random.c linux-2.6.36.4-pax/drivers/char/random.c --- linux-2.6.36.4/drivers/char/random.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/char/random.c 2010-10-27 22:58:07.000000000 +0200 @@ -902,7 +902,7 @@ static ssize_t extract_entropy_user(stru extract_buf(r, tmp); i = min_t(int, nbytes, EXTRACT_SIZE); - if (copy_to_user(buf, tmp, i)) { + if (i > sizeof(tmp) || copy_to_user(buf, tmp, i)) { ret = -EFAULT; break; } @@ -1205,7 +1205,7 @@ EXPORT_SYMBOL(generate_random_uuid); #include static int min_read_thresh = 8, min_write_thresh; -static int max_read_thresh = INPUT_POOL_WORDS * 32; +static int max_read_thresh = OUTPUT_POOL_WORDS * 32; static int max_write_thresh = INPUT_POOL_WORDS * 32; static char sysctl_bootid[16]; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/char/sonypi.c linux-2.6.36.4-pax/drivers/char/sonypi.c --- linux-2.6.36.4/drivers/char/sonypi.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/char/sonypi.c 2011-01-25 20:15:13.000000000 +0100 @@ -55,6 +55,7 @@ #include #include #include +#include #include @@ -491,7 +492,7 @@ static struct sonypi_device { spinlock_t fifo_lock; wait_queue_head_t fifo_proc_list; struct fasync_struct *fifo_async; - int open_count; + local_t open_count; int model; struct input_dev *input_jog_dev; struct input_dev *input_key_dev; @@ -898,7 +899,7 @@ static int sonypi_misc_fasync(int fd, st static int sonypi_misc_release(struct inode *inode, struct file *file) { mutex_lock(&sonypi_device.lock); - sonypi_device.open_count--; + local_dec(&sonypi_device.open_count); mutex_unlock(&sonypi_device.lock); return 0; } @@ -907,9 +908,9 @@ static int sonypi_misc_open(struct inode { mutex_lock(&sonypi_device.lock); /* Flush input queue on first open */ - if (!sonypi_device.open_count) + if (!local_read(&sonypi_device.open_count)) kfifo_reset(&sonypi_device.fifo); - sonypi_device.open_count++; + local_inc(&sonypi_device.open_count); mutex_unlock(&sonypi_device.lock); return 0; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/char/tpm/tpm.c linux-2.6.36.4-pax/drivers/char/tpm/tpm.c --- linux-2.6.36.4/drivers/char/tpm/tpm.c 2011-02-24 20:16:31.000000000 +0100 +++ linux-2.6.36.4-pax/drivers/char/tpm/tpm.c 2011-02-24 20:27:39.000000000 +0100 @@ -403,7 +403,7 @@ static ssize_t tpm_transmit(struct tpm_c chip->vendor.req_complete_val) goto out_recv; - if ((status == chip->vendor.req_canceled)) { + if (status == chip->vendor.req_canceled) { dev_err(chip->dev, "Operation Canceled\n"); rc = -ECANCELED; goto out; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/char/tpm/tpm_bios.c linux-2.6.36.4-pax/drivers/char/tpm/tpm_bios.c --- linux-2.6.36.4/drivers/char/tpm/tpm_bios.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/char/tpm/tpm_bios.c 2010-10-27 22:58:07.000000000 +0200 @@ -173,7 +173,7 @@ static void *tpm_bios_measurements_start event = addr; if ((event->event_type == 0 && event->event_size == 0) || - ((addr + sizeof(struct tcpa_event) + event->event_size) >= limit)) + (event->event_size >= limit - addr - sizeof(struct tcpa_event))) return NULL; return addr; @@ -198,7 +198,7 @@ static void *tpm_bios_measurements_next( return NULL; if ((event->event_type == 0 && event->event_size == 0) || - ((v + sizeof(struct tcpa_event) + event->event_size) >= limit)) + (event->event_size >= limit - v - sizeof(struct tcpa_event))) return NULL; (*pos)++; @@ -291,7 +291,8 @@ static int tpm_binary_bios_measurements_ int i; for (i = 0; i < sizeof(struct tcpa_event) + event->event_size; i++) - seq_putc(m, data[i]); + if (!seq_putc(m, data[i])) + return -EFAULT; return 0; } @@ -410,6 +411,11 @@ static int read_log(struct tpm_bios_log log->bios_event_log_end = log->bios_event_log + len; virt = acpi_os_map_memory(start, len); + if (!virt) { + kfree(log->bios_event_log); + log->bios_event_log = NULL; + return -EFAULT; + } memcpy(log->bios_event_log, virt, len); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/char/tty_io.c linux-2.6.36.4-pax/drivers/char/tty_io.c --- linux-2.6.36.4/drivers/char/tty_io.c 2010-12-16 12:42:50.000000000 +0100 +++ linux-2.6.36.4-pax/drivers/char/tty_io.c 2010-12-16 12:43:29.000000000 +0100 @@ -139,21 +139,11 @@ EXPORT_SYMBOL(tty_mutex); /* Spinlock to protect the tty->tty_files list */ DEFINE_SPINLOCK(tty_files_lock); -static ssize_t tty_read(struct file *, char __user *, size_t, loff_t *); -static ssize_t tty_write(struct file *, const char __user *, size_t, loff_t *); ssize_t redirected_tty_write(struct file *, const char __user *, size_t, loff_t *); -static unsigned int tty_poll(struct file *, poll_table *); static int tty_open(struct inode *, struct file *); long tty_ioctl(struct file *file, unsigned int cmd, unsigned long arg); -#ifdef CONFIG_COMPAT -static long tty_compat_ioctl(struct file *file, unsigned int cmd, - unsigned long arg); -#else -#define tty_compat_ioctl NULL -#endif static int __tty_fasync(int fd, struct file *filp, int on); -static int tty_fasync(int fd, struct file *filp, int on); static void release_tty(struct tty_struct *tty, int idx); static void __proc_set_tty(struct task_struct *tsk, struct tty_struct *tty); static void proc_set_tty(struct task_struct *tsk, struct tty_struct *tty); @@ -932,7 +922,7 @@ EXPORT_SYMBOL(start_tty); * read calls may be outstanding in parallel. */ -static ssize_t tty_read(struct file *file, char __user *buf, size_t count, +ssize_t tty_read(struct file *file, char __user *buf, size_t count, loff_t *ppos) { int i; @@ -958,6 +948,8 @@ static ssize_t tty_read(struct file *fil return i; } +EXPORT_SYMBOL(tty_read); + void tty_write_unlock(struct tty_struct *tty) { mutex_unlock(&tty->atomic_write_lock); @@ -1107,7 +1099,7 @@ void tty_write_message(struct tty_struct * write method will not be invoked in parallel for each device. */ -static ssize_t tty_write(struct file *file, const char __user *buf, +ssize_t tty_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos) { struct inode *inode = file->f_path.dentry->d_inode; @@ -1133,6 +1125,8 @@ static ssize_t tty_write(struct file *fi return ret; } +EXPORT_SYMBOL(tty_write); + ssize_t redirected_tty_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos) { @@ -1947,6 +1941,8 @@ got_driver: +EXPORT_SYMBOL(tty_release); + /** * tty_poll - check tty status * @filp: file being polled @@ -1959,7 +1955,7 @@ got_driver: * may be re-entered freely by other callers. */ -static unsigned int tty_poll(struct file *filp, poll_table *wait) +unsigned int tty_poll(struct file *filp, poll_table *wait) { struct tty_struct *tty = file_tty(filp); struct tty_ldisc *ld; @@ -2016,7 +2012,9 @@ out: return retval; } -static int tty_fasync(int fd, struct file *filp, int on) +EXPORT_SYMBOL(tty_poll); + +int tty_fasync(int fd, struct file *filp, int on) { int retval; tty_lock(); @@ -2025,6 +2023,8 @@ static int tty_fasync(int fd, struct fil return retval; } +EXPORT_SYMBOL(tty_fasync); + /** * tiocsti - fake input character * @tty: tty to fake input into @@ -2657,8 +2657,10 @@ long tty_ioctl(struct file *file, unsign return retval; } +EXPORT_SYMBOL(tty_ioctl); + #ifdef CONFIG_COMPAT -static long tty_compat_ioctl(struct file *file, unsigned int cmd, +long tty_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg) { struct inode *inode = file->f_dentry->d_inode; @@ -2682,6 +2684,9 @@ static long tty_compat_ioctl(struct file return retval; } + +EXPORT_SYMBOL(tty_compat_ioctl); + #endif /* @@ -3125,11 +3130,6 @@ struct tty_struct *get_current_tty(void) } EXPORT_SYMBOL_GPL(get_current_tty); -void tty_default_fops(struct file_operations *fops) -{ - *fops = tty_fops; -} - /* * Initialize the console device. This is called *early*, so * we can't necessarily depend on lots of kernel help here. diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/char/tty_ldisc.c linux-2.6.36.4-pax/drivers/char/tty_ldisc.c --- linux-2.6.36.4/drivers/char/tty_ldisc.c 2010-12-16 12:42:50.000000000 +0100 +++ linux-2.6.36.4-pax/drivers/char/tty_ldisc.c 2010-12-16 12:43:29.000000000 +0100 @@ -76,7 +76,7 @@ static void put_ldisc(struct tty_ldisc * if (atomic_dec_and_lock(&ld->users, &tty_ldisc_lock)) { struct tty_ldisc_ops *ldo = ld->ops; - ldo->refcount--; + atomic_dec(&ldo->refcount); module_put(ldo->owner); spin_unlock_irqrestore(&tty_ldisc_lock, flags); @@ -111,7 +111,7 @@ int tty_register_ldisc(int disc, struct spin_lock_irqsave(&tty_ldisc_lock, flags); tty_ldiscs[disc] = new_ldisc; new_ldisc->num = disc; - new_ldisc->refcount = 0; + atomic_set(&new_ldisc->refcount, 0); spin_unlock_irqrestore(&tty_ldisc_lock, flags); return ret; @@ -139,7 +139,7 @@ int tty_unregister_ldisc(int disc) return -EINVAL; spin_lock_irqsave(&tty_ldisc_lock, flags); - if (tty_ldiscs[disc]->refcount) + if (atomic_read(&tty_ldiscs[disc]->refcount)) ret = -EBUSY; else tty_ldiscs[disc] = NULL; @@ -160,7 +160,7 @@ static struct tty_ldisc_ops *get_ldops(i if (ldops) { ret = ERR_PTR(-EAGAIN); if (try_module_get(ldops->owner)) { - ldops->refcount++; + atomic_inc(&ldops->refcount); ret = ldops; } } @@ -173,7 +173,7 @@ static void put_ldops(struct tty_ldisc_o unsigned long flags; spin_lock_irqsave(&tty_ldisc_lock, flags); - ldops->refcount--; + atomic_dec(&ldops->refcount); module_put(ldops->owner); spin_unlock_irqrestore(&tty_ldisc_lock, flags); } diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/char/vt.c linux-2.6.36.4-pax/drivers/char/vt.c --- linux-2.6.36.4/drivers/char/vt.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/char/vt.c 2011-02-24 15:22:22.000000000 +0100 @@ -254,7 +254,7 @@ EXPORT_SYMBOL_GPL(unregister_vt_notifier static void notify_write(struct vc_data *vc, unsigned int unicode) { - struct vt_notifier_param param = { .vc = vc, unicode = unicode }; + struct vt_notifier_param param = { .vc = vc, .c = unicode }; atomic_notifier_call_chain(&vt_notifier_list, VT_WRITE, ¶m); } diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/cpuidle/sysfs.c linux-2.6.36.4-pax/drivers/cpuidle/sysfs.c --- linux-2.6.36.4/drivers/cpuidle/sysfs.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/cpuidle/sysfs.c 2010-10-27 22:58:07.000000000 +0200 @@ -300,7 +300,7 @@ static struct kobj_type ktype_state_cpui .release = cpuidle_state_sysfs_release, }; -static void inline cpuidle_free_state_kobj(struct cpuidle_device *device, int i) +static inline void cpuidle_free_state_kobj(struct cpuidle_device *device, int i) { kobject_put(&device->kobjs[i]->kobj); wait_for_completion(&device->kobjs[i]->kobj_unregister); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/edac/edac_core.h linux-2.6.36.4-pax/drivers/edac/edac_core.h --- linux-2.6.36.4/drivers/edac/edac_core.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/edac/edac_core.h 2010-10-27 22:58:07.000000000 +0200 @@ -85,11 +85,11 @@ extern const char *edac_mem_types[]; #else /* !CONFIG_EDAC_DEBUG */ -#define debugf0( ... ) -#define debugf1( ... ) -#define debugf2( ... ) -#define debugf3( ... ) -#define debugf4( ... ) +#define debugf0( ... ) do {} while (0) +#define debugf1( ... ) do {} while (0) +#define debugf2( ... ) do {} while (0) +#define debugf3( ... ) do {} while (0) +#define debugf4( ... ) do {} while (0) #endif /* !CONFIG_EDAC_DEBUG */ diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/edac/edac_mc_sysfs.c linux-2.6.36.4-pax/drivers/edac/edac_mc_sysfs.c --- linux-2.6.36.4/drivers/edac/edac_mc_sysfs.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/edac/edac_mc_sysfs.c 2010-10-27 22:58:44.000000000 +0200 @@ -764,7 +764,7 @@ static void edac_inst_grp_release(struct } /* Intermediate show/store table */ -static struct sysfs_ops inst_grp_ops = { +static const struct sysfs_ops inst_grp_ops = { .show = inst_grp_show, .store = inst_grp_store }; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/firewire/core-cdev.c linux-2.6.36.4-pax/drivers/firewire/core-cdev.c --- linux-2.6.36.4/drivers/firewire/core-cdev.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/firewire/core-cdev.c 2010-10-27 22:58:07.000000000 +0200 @@ -1329,8 +1329,7 @@ static int init_iso_resource(struct clie int ret; if ((request->channels == 0 && request->bandwidth == 0) || - request->bandwidth > BANDWIDTH_AVAILABLE_INITIAL || - request->bandwidth < 0) + request->bandwidth > BANDWIDTH_AVAILABLE_INITIAL) return -EINVAL; r = kmalloc(sizeof(*r), GFP_KERNEL); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/firmware/dmi_scan.c linux-2.6.36.4-pax/drivers/firmware/dmi_scan.c --- linux-2.6.36.4/drivers/firmware/dmi_scan.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/firmware/dmi_scan.c 2010-10-27 22:58:07.000000000 +0200 @@ -412,11 +412,6 @@ void __init dmi_scan_machine(void) } } else { - /* - * no iounmap() for that ioremap(); it would be a no-op, but - * it's so early in setup that sucker gets confused into doing - * what it shouldn't if we actually call it. - */ p = dmi_ioremap(0xF0000, 0x10000); if (p == NULL) goto error; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/gpu/drm/drm_crtc_helper.c linux-2.6.36.4-pax/drivers/gpu/drm/drm_crtc_helper.c --- linux-2.6.36.4/drivers/gpu/drm/drm_crtc_helper.c 2011-02-24 20:16:31.000000000 +0100 +++ linux-2.6.36.4-pax/drivers/gpu/drm/drm_crtc_helper.c 2011-02-24 20:27:39.000000000 +0100 @@ -276,7 +276,7 @@ static bool drm_encoder_crtc_ok(struct d struct drm_crtc *tmp; int crtc_mask = 1; - WARN(!crtc, "checking null crtc?"); + BUG_ON(!crtc); dev = crtc->dev; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/gpu/drm/drm_drv.c linux-2.6.36.4-pax/drivers/gpu/drm/drm_drv.c --- linux-2.6.36.4/drivers/gpu/drm/drm_drv.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/gpu/drm/drm_drv.c 2010-10-27 22:58:07.000000000 +0200 @@ -428,7 +428,7 @@ long drm_ioctl(struct file *filp, dev = file_priv->minor->dev; atomic_inc(&dev->ioctl_count); - atomic_inc(&dev->counts[_DRM_STAT_IOCTLS]); + atomic_inc_unchecked(&dev->counts[_DRM_STAT_IOCTLS]); ++file_priv->ioctl_count; DRM_DEBUG("pid=%d, cmd=0x%02x, nr=0x%02x, dev 0x%lx, auth=%d\n", diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/gpu/drm/drm_fops.c linux-2.6.36.4-pax/drivers/gpu/drm/drm_fops.c --- linux-2.6.36.4/drivers/gpu/drm/drm_fops.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/gpu/drm/drm_fops.c 2011-01-14 15:07:29.000000000 +0100 @@ -71,7 +71,7 @@ static int drm_setup(struct drm_device * } for (i = 0; i < ARRAY_SIZE(dev->counts); i++) - atomic_set(&dev->counts[i], 0); + atomic_set_unchecked(&dev->counts[i], 0); dev->sigdata.lock = NULL; @@ -135,8 +135,8 @@ int drm_open(struct inode *inode, struct retcode = drm_open_helper(inode, filp, dev); if (!retcode) { - atomic_inc(&dev->counts[_DRM_STAT_OPENS]); - if (!dev->open_count++) + atomic_inc_unchecked(&dev->counts[_DRM_STAT_OPENS]); + if (local_inc_return(&dev->open_count) == 1) retcode = drm_setup(dev); } if (!retcode) { @@ -471,7 +471,7 @@ int drm_release(struct inode *inode, str mutex_lock(&drm_global_mutex); - DRM_DEBUG("open_count = %d\n", dev->open_count); + DRM_DEBUG("open_count = %d\n", local_read(&dev->open_count)); if (dev->driver->preclose) dev->driver->preclose(dev, file_priv); @@ -483,7 +483,7 @@ int drm_release(struct inode *inode, str DRM_DEBUG("pid = %d, device = 0x%lx, open_count = %d\n", task_pid_nr(current), (long)old_encode_dev(file_priv->minor->device), - dev->open_count); + local_read(&dev->open_count)); /* if the master has gone away we can't do anything with the lock */ if (file_priv->minor->master) @@ -564,8 +564,8 @@ int drm_release(struct inode *inode, str * End inline drm_release */ - atomic_inc(&dev->counts[_DRM_STAT_CLOSES]); - if (!--dev->open_count) { + atomic_inc_unchecked(&dev->counts[_DRM_STAT_CLOSES]); + if (local_dec_and_test(&dev->open_count)) { if (atomic_read(&dev->ioctl_count)) { DRM_ERROR("Device busy: %d\n", atomic_read(&dev->ioctl_count)); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/gpu/drm/drm_gem.c linux-2.6.36.4-pax/drivers/gpu/drm/drm_gem.c --- linux-2.6.36.4/drivers/gpu/drm/drm_gem.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/gpu/drm/drm_gem.c 2011-01-20 01:36:42.000000000 +0100 @@ -93,11 +93,11 @@ drm_gem_init(struct drm_device *dev) spin_lock_init(&dev->object_name_lock); idr_init(&dev->object_name_idr); atomic_set(&dev->object_count, 0); - atomic_set(&dev->object_memory, 0); + atomic_set_unchecked(&dev->object_memory, 0); atomic_set(&dev->pin_count, 0); - atomic_set(&dev->pin_memory, 0); + atomic_set_unchecked(&dev->pin_memory, 0); atomic_set(&dev->gtt_count, 0); - atomic_set(&dev->gtt_memory, 0); + atomic_set_unchecked(&dev->gtt_memory, 0); mm = kzalloc(sizeof(struct drm_gem_mm), GFP_KERNEL); if (!mm) { @@ -152,7 +152,7 @@ int drm_gem_object_init(struct drm_devic obj->size = size; atomic_inc(&dev->object_count); - atomic_add(obj->size, &dev->object_memory); + atomic_add_unchecked(obj->size, &dev->object_memory); return 0; } @@ -181,7 +181,7 @@ drm_gem_object_alloc(struct drm_device * fput: /* Object_init mangles the global counters - readjust them. */ atomic_dec(&dev->object_count); - atomic_sub(obj->size, &dev->object_memory); + atomic_sub_unchecked(obj->size, &dev->object_memory); fput(obj->filp); free: kfree(obj); @@ -439,7 +439,7 @@ drm_gem_object_release(struct drm_gem_ob struct drm_device *dev = obj->dev; fput(obj->filp); atomic_dec(&dev->object_count); - atomic_sub(obj->size, &dev->object_memory); + atomic_sub_unchecked(obj->size, &dev->object_memory); } EXPORT_SYMBOL(drm_gem_object_release); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/gpu/drm/drm_global.c linux-2.6.36.4-pax/drivers/gpu/drm/drm_global.c --- linux-2.6.36.4/drivers/gpu/drm/drm_global.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/gpu/drm/drm_global.c 2010-10-27 22:58:07.000000000 +0200 @@ -36,7 +36,7 @@ struct drm_global_item { struct mutex mutex; void *object; - int refcount; + atomic_t refcount; }; static struct drm_global_item glob[DRM_GLOBAL_NUM]; @@ -49,7 +49,7 @@ void drm_global_init(void) struct drm_global_item *item = &glob[i]; mutex_init(&item->mutex); item->object = NULL; - item->refcount = 0; + atomic_set(&item->refcount, 0); } } @@ -59,7 +59,7 @@ void drm_global_release(void) for (i = 0; i < DRM_GLOBAL_NUM; ++i) { struct drm_global_item *item = &glob[i]; BUG_ON(item->object != NULL); - BUG_ON(item->refcount != 0); + BUG_ON(atomic_read(&item->refcount) != 0); } } @@ -70,7 +70,7 @@ int drm_global_item_ref(struct drm_globa void *object; mutex_lock(&item->mutex); - if (item->refcount == 0) { + if (atomic_read(&item->refcount) == 0) { item->object = kzalloc(ref->size, GFP_KERNEL); if (unlikely(item->object == NULL)) { ret = -ENOMEM; @@ -83,7 +83,7 @@ int drm_global_item_ref(struct drm_globa goto out_err; } - ++item->refcount; + atomic_inc(&item->refcount); ref->object = item->object; object = item->object; mutex_unlock(&item->mutex); @@ -100,9 +100,9 @@ void drm_global_item_unref(struct drm_gl struct drm_global_item *item = &glob[ref->global_type]; mutex_lock(&item->mutex); - BUG_ON(item->refcount == 0); + BUG_ON(atomic_read(&item->refcount) == 0); BUG_ON(ref->object != item->object); - if (--item->refcount == 0) { + if (atomic_dec_and_test(&item->refcount)) { ref->release(ref); item->object = NULL; } diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/gpu/drm/drm_info.c linux-2.6.36.4-pax/drivers/gpu/drm/drm_info.c --- linux-2.6.36.4/drivers/gpu/drm/drm_info.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/gpu/drm/drm_info.c 2011-01-20 01:37:01.000000000 +0100 @@ -86,10 +86,14 @@ int drm_vm_info(struct seq_file *m, void struct drm_local_map *map; struct drm_map_list *r_list; - /* Hardcoded from _DRM_FRAME_BUFFER, - _DRM_REGISTERS, _DRM_SHM, _DRM_AGP, and - _DRM_SCATTER_GATHER and _DRM_CONSISTENT */ - const char *types[] = { "FB", "REG", "SHM", "AGP", "SG", "PCI" }; + static const char * const types[] = { + [_DRM_FRAME_BUFFER] = "FB", + [_DRM_REGISTERS] = "REG", + [_DRM_SHM] = "SHM", + [_DRM_AGP] = "AGP", + [_DRM_SCATTER_GATHER] = "SG", + [_DRM_CONSISTENT] = "PCI", + [_DRM_GEM] = "GEM" }; const char *type; int i; @@ -100,7 +104,7 @@ int drm_vm_info(struct seq_file *m, void map = r_list->map; if (!map) continue; - if (map->type < 0 || map->type > 5) + if (map->type >= ARRAY_SIZE(types)) type = "??"; else type = types[map->type]; @@ -276,10 +280,10 @@ int drm_gem_object_info(struct seq_file struct drm_device *dev = node->minor->dev; seq_printf(m, "%d objects\n", atomic_read(&dev->object_count)); - seq_printf(m, "%d object bytes\n", atomic_read(&dev->object_memory)); + seq_printf(m, "%d object bytes\n", atomic_read_unchecked(&dev->object_memory)); seq_printf(m, "%d pinned\n", atomic_read(&dev->pin_count)); - seq_printf(m, "%d pin bytes\n", atomic_read(&dev->pin_memory)); - seq_printf(m, "%d gtt bytes\n", atomic_read(&dev->gtt_memory)); + seq_printf(m, "%d pin bytes\n", atomic_read_unchecked(&dev->pin_memory)); + seq_printf(m, "%d gtt bytes\n", atomic_read_unchecked(&dev->gtt_memory)); seq_printf(m, "%d gtt total\n", dev->gtt_total); return 0; } diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/gpu/drm/drm_ioctl.c linux-2.6.36.4-pax/drivers/gpu/drm/drm_ioctl.c --- linux-2.6.36.4/drivers/gpu/drm/drm_ioctl.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/gpu/drm/drm_ioctl.c 2010-10-27 22:58:07.000000000 +0200 @@ -353,7 +353,7 @@ int drm_getstats(struct drm_device *dev, stats->data[i].value = (file_priv->master->lock.hw_lock ? file_priv->master->lock.hw_lock->lock : 0); else - stats->data[i].value = atomic_read(&dev->counts[i]); + stats->data[i].value = atomic_read_unchecked(&dev->counts[i]); stats->data[i].type = dev->types[i]; } diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/gpu/drm/drm_lock.c linux-2.6.36.4-pax/drivers/gpu/drm/drm_lock.c --- linux-2.6.36.4/drivers/gpu/drm/drm_lock.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/gpu/drm/drm_lock.c 2010-10-27 22:58:07.000000000 +0200 @@ -87,7 +87,7 @@ int drm_lock(struct drm_device *dev, voi if (drm_lock_take(&master->lock, lock->context)) { master->lock.file_priv = file_priv; master->lock.lock_time = jiffies; - atomic_inc(&dev->counts[_DRM_STAT_LOCKS]); + atomic_inc_unchecked(&dev->counts[_DRM_STAT_LOCKS]); break; /* Got lock */ } @@ -167,7 +167,7 @@ int drm_unlock(struct drm_device *dev, v return -EINVAL; } - atomic_inc(&dev->counts[_DRM_STAT_UNLOCKS]); + atomic_inc_unchecked(&dev->counts[_DRM_STAT_UNLOCKS]); /* kernel_context_switch isn't used by any of the x86 drm * modules but is required by the Sparc driver. diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/gpu/drm/i810/i810_dma.c linux-2.6.36.4-pax/drivers/gpu/drm/i810/i810_dma.c --- linux-2.6.36.4/drivers/gpu/drm/i810/i810_dma.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/gpu/drm/i810/i810_dma.c 2010-10-27 22:58:07.000000000 +0200 @@ -952,8 +952,8 @@ static int i810_dma_vertex(struct drm_de dma->buflist[vertex->idx], vertex->discard, vertex->used); - atomic_add(vertex->used, &dev->counts[_DRM_STAT_SECONDARY]); - atomic_inc(&dev->counts[_DRM_STAT_DMA]); + atomic_add_unchecked(vertex->used, &dev->counts[_DRM_STAT_SECONDARY]); + atomic_inc_unchecked(&dev->counts[_DRM_STAT_DMA]); sarea_priv->last_enqueue = dev_priv->counter - 1; sarea_priv->last_dispatch = (int)hw_status[5]; @@ -1113,8 +1113,8 @@ static int i810_dma_mc(struct drm_device i810_dma_dispatch_mc(dev, dma->buflist[mc->idx], mc->used, mc->last_render); - atomic_add(mc->used, &dev->counts[_DRM_STAT_SECONDARY]); - atomic_inc(&dev->counts[_DRM_STAT_DMA]); + atomic_add_unchecked(mc->used, &dev->counts[_DRM_STAT_SECONDARY]); + atomic_inc_unchecked(&dev->counts[_DRM_STAT_DMA]); sarea_priv->last_enqueue = dev_priv->counter - 1; sarea_priv->last_dispatch = (int)hw_status[5]; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/gpu/drm/i915/dvo.h linux-2.6.36.4-pax/drivers/gpu/drm/i915/dvo.h --- linux-2.6.36.4/drivers/gpu/drm/i915/dvo.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/gpu/drm/i915/dvo.h 2010-10-27 22:58:44.000000000 +0200 @@ -122,23 +122,23 @@ struct intel_dvo_dev_ops { * * \return singly-linked list of modes or NULL if no modes found. */ - struct drm_display_mode *(*get_modes)(struct intel_dvo_device *dvo); + struct drm_display_mode *(* const get_modes)(struct intel_dvo_device *dvo); /** * Clean up driver-specific bits of the output */ - void (*destroy) (struct intel_dvo_device *dvo); + void (* const destroy) (struct intel_dvo_device *dvo); /** * Debugging hook to dump device registers to log file */ - void (*dump_regs)(struct intel_dvo_device *dvo); + void (* const dump_regs)(struct intel_dvo_device *dvo); }; -extern struct intel_dvo_dev_ops sil164_ops; -extern struct intel_dvo_dev_ops ch7xxx_ops; -extern struct intel_dvo_dev_ops ivch_ops; -extern struct intel_dvo_dev_ops tfp410_ops; -extern struct intel_dvo_dev_ops ch7017_ops; +extern const struct intel_dvo_dev_ops sil164_ops; +extern const struct intel_dvo_dev_ops ch7xxx_ops; +extern const struct intel_dvo_dev_ops ivch_ops; +extern const struct intel_dvo_dev_ops tfp410_ops; +extern const struct intel_dvo_dev_ops ch7017_ops; #endif /* _INTEL_DVO_H */ diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/gpu/drm/i915/dvo_ch7017.c linux-2.6.36.4-pax/drivers/gpu/drm/i915/dvo_ch7017.c --- linux-2.6.36.4/drivers/gpu/drm/i915/dvo_ch7017.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/gpu/drm/i915/dvo_ch7017.c 2010-10-27 22:58:44.000000000 +0200 @@ -402,7 +402,7 @@ static void ch7017_destroy(struct intel_ } } -struct intel_dvo_dev_ops ch7017_ops = { +const struct intel_dvo_dev_ops ch7017_ops = { .init = ch7017_init, .detect = ch7017_detect, .mode_valid = ch7017_mode_valid, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/gpu/drm/i915/dvo_ch7xxx.c linux-2.6.36.4-pax/drivers/gpu/drm/i915/dvo_ch7xxx.c --- linux-2.6.36.4/drivers/gpu/drm/i915/dvo_ch7xxx.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/gpu/drm/i915/dvo_ch7xxx.c 2010-10-27 22:58:44.000000000 +0200 @@ -322,7 +322,7 @@ static void ch7xxx_destroy(struct intel_ } } -struct intel_dvo_dev_ops ch7xxx_ops = { +const struct intel_dvo_dev_ops ch7xxx_ops = { .init = ch7xxx_init, .detect = ch7xxx_detect, .mode_valid = ch7xxx_mode_valid, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/gpu/drm/i915/dvo_ivch.c linux-2.6.36.4-pax/drivers/gpu/drm/i915/dvo_ivch.c --- linux-2.6.36.4/drivers/gpu/drm/i915/dvo_ivch.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/gpu/drm/i915/dvo_ivch.c 2010-10-27 22:58:44.000000000 +0200 @@ -412,7 +412,7 @@ static void ivch_destroy(struct intel_dv } } -struct intel_dvo_dev_ops ivch_ops= { +const struct intel_dvo_dev_ops ivch_ops= { .init = ivch_init, .dpms = ivch_dpms, .mode_valid = ivch_mode_valid, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/gpu/drm/i915/dvo_sil164.c linux-2.6.36.4-pax/drivers/gpu/drm/i915/dvo_sil164.c --- linux-2.6.36.4/drivers/gpu/drm/i915/dvo_sil164.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/gpu/drm/i915/dvo_sil164.c 2010-10-27 22:58:44.000000000 +0200 @@ -254,7 +254,7 @@ static void sil164_destroy(struct intel_ } } -struct intel_dvo_dev_ops sil164_ops = { +const struct intel_dvo_dev_ops sil164_ops = { .init = sil164_init, .detect = sil164_detect, .mode_valid = sil164_mode_valid, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/gpu/drm/i915/dvo_tfp410.c linux-2.6.36.4-pax/drivers/gpu/drm/i915/dvo_tfp410.c --- linux-2.6.36.4/drivers/gpu/drm/i915/dvo_tfp410.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/gpu/drm/i915/dvo_tfp410.c 2010-10-27 22:58:44.000000000 +0200 @@ -295,7 +295,7 @@ static void tfp410_destroy(struct intel_ } } -struct intel_dvo_dev_ops tfp410_ops = { +const struct intel_dvo_dev_ops tfp410_ops = { .init = tfp410_init, .detect = tfp410_detect, .mode_valid = tfp410_mode_valid, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/gpu/drm/i915/i915_dma.c linux-2.6.36.4-pax/drivers/gpu/drm/i915/i915_dma.c --- linux-2.6.36.4/drivers/gpu/drm/i915/i915_dma.c 2011-02-24 20:16:19.000000000 +0100 +++ linux-2.6.36.4-pax/drivers/gpu/drm/i915/i915_dma.c 2011-02-24 20:27:37.000000000 +0100 @@ -1358,7 +1358,7 @@ static bool i915_switcheroo_can_switch(s bool can_switch; spin_lock(&dev->count_lock); - can_switch = (dev->open_count == 0); + can_switch = (local_read(&dev->open_count) == 0); spin_unlock(&dev->count_lock); return can_switch; } diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/gpu/drm/i915/i915_drv.c linux-2.6.36.4-pax/drivers/gpu/drm/i915/i915_drv.c --- linux-2.6.36.4/drivers/gpu/drm/i915/i915_drv.c 2011-02-24 20:16:31.000000000 +0100 +++ linux-2.6.36.4-pax/drivers/gpu/drm/i915/i915_drv.c 2011-02-24 20:27:39.000000000 +0100 @@ -500,7 +500,7 @@ static const struct dev_pm_ops i915_pm_o .restore = i915_pm_resume, }; -static struct vm_operations_struct i915_gem_vm_ops = { +static const struct vm_operations_struct i915_gem_vm_ops = { .fault = i915_gem_fault, .open = drm_gem_vm_open, .close = drm_gem_vm_close, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/gpu/drm/i915/i915_gem.c linux-2.6.36.4-pax/drivers/gpu/drm/i915/i915_gem.c --- linux-2.6.36.4/drivers/gpu/drm/i915/i915_gem.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/gpu/drm/i915/i915_gem.c 2011-01-20 01:38:20.000000000 +0100 @@ -110,7 +110,7 @@ i915_gem_get_aperture_ioctl(struct drm_d args->aper_size = dev->gtt_total; args->aper_available_size = (args->aper_size - - atomic_read(&dev->pin_memory)); + atomic_read_unchecked(&dev->pin_memory)); return 0; } @@ -2000,7 +2000,7 @@ i915_gem_object_unbind(struct drm_gem_ob if (obj_priv->gtt_space) { atomic_dec(&dev->gtt_count); - atomic_sub(obj->size, &dev->gtt_memory); + atomic_sub_unchecked(obj->size, &dev->gtt_memory); drm_mm_put_block(obj_priv->gtt_space); obj_priv->gtt_space = NULL; @@ -2567,7 +2567,7 @@ i915_gem_object_bind_to_gtt(struct drm_g goto search_free; } atomic_inc(&dev->gtt_count); - atomic_add(obj->size, &dev->gtt_memory); + atomic_add_unchecked(obj->size, &dev->gtt_memory); /* keep track of bounds object by adding it to the inactive list */ list_add_tail(&obj_priv->list, &dev_priv->mm.inactive_list); @@ -3707,9 +3707,9 @@ i915_gem_do_execbuffer(struct drm_device "%d/%d gtt bytes\n", atomic_read(&dev->object_count), atomic_read(&dev->pin_count), - atomic_read(&dev->object_memory), - atomic_read(&dev->pin_memory), - atomic_read(&dev->gtt_memory), + atomic_read_unchecked(&dev->object_memory), + atomic_read_unchecked(&dev->pin_memory), + atomic_read_unchecked(&dev->gtt_memory), dev->gtt_total); } goto err; @@ -4073,7 +4073,7 @@ i915_gem_object_pin(struct drm_gem_objec */ if (obj_priv->pin_count == 1) { atomic_inc(&dev->pin_count); - atomic_add(obj->size, &dev->pin_memory); + atomic_add_unchecked(obj->size, &dev->pin_memory); if (!obj_priv->active && (obj->write_domain & I915_GEM_GPU_DOMAINS) == 0) list_del_init(&obj_priv->list); @@ -4105,7 +4105,7 @@ i915_gem_object_unpin(struct drm_gem_obj list_move_tail(&obj_priv->list, &dev_priv->mm.inactive_list); atomic_dec(&dev->pin_count); - atomic_sub(obj->size, &dev->pin_memory); + atomic_sub_unchecked(obj->size, &dev->pin_memory); } i915_verify_inactive(dev, __FILE__, __LINE__); } diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/gpu/drm/nouveau/nouveau_backlight.c linux-2.6.36.4-pax/drivers/gpu/drm/nouveau/nouveau_backlight.c --- linux-2.6.36.4/drivers/gpu/drm/nouveau/nouveau_backlight.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/gpu/drm/nouveau/nouveau_backlight.c 2010-10-27 22:58:44.000000000 +0200 @@ -58,7 +58,7 @@ static int nv40_set_intensity(struct bac return 0; } -static struct backlight_ops nv40_bl_ops = { +static const struct backlight_ops nv40_bl_ops = { .options = BL_CORE_SUSPENDRESUME, .get_brightness = nv40_get_intensity, .update_status = nv40_set_intensity, @@ -81,7 +81,7 @@ static int nv50_set_intensity(struct bac return 0; } -static struct backlight_ops nv50_bl_ops = { +static const struct backlight_ops nv50_bl_ops = { .options = BL_CORE_SUSPENDRESUME, .get_brightness = nv50_get_intensity, .update_status = nv50_set_intensity, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/gpu/drm/nouveau/nouveau_state.c linux-2.6.36.4-pax/drivers/gpu/drm/nouveau/nouveau_state.c --- linux-2.6.36.4/drivers/gpu/drm/nouveau/nouveau_state.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/gpu/drm/nouveau/nouveau_state.c 2011-01-14 15:06:45.000000000 +0100 @@ -501,7 +501,7 @@ static bool nouveau_switcheroo_can_switc bool can_switch; spin_lock(&dev->count_lock); - can_switch = (dev->open_count == 0); + can_switch = (local_read(&dev->open_count) == 0); spin_unlock(&dev->count_lock); return can_switch; } diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/gpu/drm/radeon/mkregtable.c linux-2.6.36.4-pax/drivers/gpu/drm/radeon/mkregtable.c --- linux-2.6.36.4/drivers/gpu/drm/radeon/mkregtable.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/gpu/drm/radeon/mkregtable.c 2010-10-27 22:58:07.000000000 +0200 @@ -637,14 +637,14 @@ static int parser_auth(struct table *t, regex_t mask_rex; regmatch_t match[4]; char buf[1024]; - size_t end; + long end; int len; int done = 0; int r; unsigned o; struct offset *offset; char last_reg_s[10]; - int last_reg; + unsigned long last_reg; if (regcomp (&mask_rex, "(0x[0-9a-fA-F]*) *([_a-zA-Z0-9]*)", REG_EXTENDED)) { diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/gpu/drm/radeon/radeon_device.c linux-2.6.36.4-pax/drivers/gpu/drm/radeon/radeon_device.c --- linux-2.6.36.4/drivers/gpu/drm/radeon/radeon_device.c 2011-01-12 15:14:10.000000000 +0100 +++ linux-2.6.36.4-pax/drivers/gpu/drm/radeon/radeon_device.c 2011-01-14 15:06:55.000000000 +0100 @@ -578,7 +578,7 @@ static bool radeon_switcheroo_can_switch bool can_switch; spin_lock(&dev->count_lock); - can_switch = (dev->open_count == 0); + can_switch = (local_read(&dev->open_count) == 0); spin_unlock(&dev->count_lock); return can_switch; } diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/gpu/drm/radeon/radeon_state.c linux-2.6.36.4-pax/drivers/gpu/drm/radeon/radeon_state.c --- linux-2.6.36.4/drivers/gpu/drm/radeon/radeon_state.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/gpu/drm/radeon/radeon_state.c 2010-10-27 22:58:07.000000000 +0200 @@ -2168,7 +2168,7 @@ static int radeon_cp_clear(struct drm_de if (sarea_priv->nbox > RADEON_NR_SAREA_CLIPRECTS) sarea_priv->nbox = RADEON_NR_SAREA_CLIPRECTS; - if (DRM_COPY_FROM_USER(&depth_boxes, clear->depth_boxes, + if (sarea_priv->nbox > RADEON_NR_SAREA_CLIPRECTS || DRM_COPY_FROM_USER(&depth_boxes, clear->depth_boxes, sarea_priv->nbox * sizeof(depth_boxes[0]))) return -EFAULT; @@ -3031,7 +3031,7 @@ static int radeon_cp_getparam(struct drm { drm_radeon_private_t *dev_priv = dev->dev_private; drm_radeon_getparam_t *param = data; - int value; + int value = 0; DRM_DEBUG("pid=%d\n", DRM_CURRENTPID); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/gpu/drm/radeon/radeon_ttm.c linux-2.6.36.4-pax/drivers/gpu/drm/radeon/radeon_ttm.c --- linux-2.6.36.4/drivers/gpu/drm/radeon/radeon_ttm.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/gpu/drm/radeon/radeon_ttm.c 2010-10-27 22:58:07.000000000 +0200 @@ -601,8 +601,9 @@ void radeon_ttm_fini(struct radeon_devic DRM_INFO("radeon: ttm finalized\n"); } -static struct vm_operations_struct radeon_ttm_vm_ops; -static const struct vm_operations_struct *ttm_vm_ops = NULL; +extern int ttm_bo_vm_fault(struct vm_area_struct *vma, struct vm_fault *vmf); +extern void ttm_bo_vm_open(struct vm_area_struct *vma); +extern void ttm_bo_vm_close(struct vm_area_struct *vma); static int radeon_ttm_fault(struct vm_area_struct *vma, struct vm_fault *vmf) { @@ -610,17 +611,22 @@ static int radeon_ttm_fault(struct vm_ar struct radeon_device *rdev; int r; - bo = (struct ttm_buffer_object *)vma->vm_private_data; - if (bo == NULL) { + bo = (struct ttm_buffer_object *)vma->vm_private_data; + if (!bo) return VM_FAULT_NOPAGE; - } rdev = radeon_get_rdev(bo->bdev); mutex_lock(&rdev->vram_mutex); - r = ttm_vm_ops->fault(vma, vmf); + r = ttm_bo_vm_fault(vma, vmf); mutex_unlock(&rdev->vram_mutex); return r; } +static const struct vm_operations_struct radeon_ttm_vm_ops = { + .fault = radeon_ttm_fault, + .open = ttm_bo_vm_open, + .close = ttm_bo_vm_close +}; + int radeon_mmap(struct file *filp, struct vm_area_struct *vma) { struct drm_file *file_priv; @@ -633,18 +639,11 @@ int radeon_mmap(struct file *filp, struc file_priv = (struct drm_file *)filp->private_data; rdev = file_priv->minor->dev->dev_private; - if (rdev == NULL) { + if (!rdev) return -EINVAL; - } r = ttm_bo_mmap(filp, vma, &rdev->mman.bdev); - if (unlikely(r != 0)) { + if (r) return r; - } - if (unlikely(ttm_vm_ops == NULL)) { - ttm_vm_ops = vma->vm_ops; - radeon_ttm_vm_ops = *ttm_vm_ops; - radeon_ttm_vm_ops.fault = &radeon_ttm_fault; - } vma->vm_ops = &radeon_ttm_vm_ops; return 0; } diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/gpu/drm/ttm/ttm_bo.c linux-2.6.36.4-pax/drivers/gpu/drm/ttm/ttm_bo.c --- linux-2.6.36.4/drivers/gpu/drm/ttm/ttm_bo.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/gpu/drm/ttm/ttm_bo.c 2010-10-27 22:58:07.000000000 +0200 @@ -47,7 +47,7 @@ #include #define TTM_ASSERT_LOCKED(param) -#define TTM_DEBUG(fmt, arg...) +#define TTM_DEBUG(fmt, arg...) do {} while (0) #define TTM_BO_HASH_ORDER 13 static int ttm_bo_setup_vm(struct ttm_buffer_object *bo); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/gpu/drm/ttm/ttm_bo_vm.c linux-2.6.36.4-pax/drivers/gpu/drm/ttm/ttm_bo_vm.c --- linux-2.6.36.4/drivers/gpu/drm/ttm/ttm_bo_vm.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/gpu/drm/ttm/ttm_bo_vm.c 2010-10-27 22:58:07.000000000 +0200 @@ -69,11 +69,11 @@ static struct ttm_buffer_object *ttm_bo_ return best_bo; } -static int ttm_bo_vm_fault(struct vm_area_struct *vma, struct vm_fault *vmf) +int ttm_bo_vm_fault(struct vm_area_struct *vma, struct vm_fault *vmf) { struct ttm_buffer_object *bo = (struct ttm_buffer_object *) vma->vm_private_data; - struct ttm_bo_device *bdev = bo->bdev; + struct ttm_bo_device *bdev; unsigned long page_offset; unsigned long page_last; unsigned long pfn; @@ -84,6 +84,10 @@ static int ttm_bo_vm_fault(struct vm_are unsigned long address = (unsigned long)vmf->virtual_address; int retval = VM_FAULT_NOPAGE; + if (!bo) + return VM_FAULT_NOPAGE; + bdev = bo->bdev; + /* * Work around locking order reversal in fault / nopfn * between mmap_sem and bo_reserve: Perform a trylock operation @@ -212,22 +216,25 @@ out_unlock: ttm_bo_unreserve(bo); return retval; } +EXPORT_SYMBOL(ttm_bo_vm_fault); -static void ttm_bo_vm_open(struct vm_area_struct *vma) +void ttm_bo_vm_open(struct vm_area_struct *vma) { struct ttm_buffer_object *bo = (struct ttm_buffer_object *)vma->vm_private_data; (void)ttm_bo_reference(bo); } +EXPORT_SYMBOL(ttm_bo_vm_open); -static void ttm_bo_vm_close(struct vm_area_struct *vma) +void ttm_bo_vm_close(struct vm_area_struct *vma) { struct ttm_buffer_object *bo = (struct ttm_buffer_object *)vma->vm_private_data; ttm_bo_unref(&bo); vma->vm_private_data = NULL; } +EXPORT_SYMBOL(ttm_bo_vm_close); static const struct vm_operations_struct ttm_bo_vm_ops = { .fault = ttm_bo_vm_fault, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/gpu/drm/vmwgfx/vmwgfx_ldu.c linux-2.6.36.4-pax/drivers/gpu/drm/vmwgfx/vmwgfx_ldu.c --- linux-2.6.36.4/drivers/gpu/drm/vmwgfx/vmwgfx_ldu.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/gpu/drm/vmwgfx/vmwgfx_ldu.c 2010-12-19 13:08:34.000000000 +0100 @@ -547,7 +547,7 @@ int vmw_kms_init_legacy_display_system(s return -EINVAL; } - dev_priv->ldu_priv = kmalloc(GFP_KERNEL, sizeof(*dev_priv->ldu_priv)); + dev_priv->ldu_priv = kmalloc(sizeof(*dev_priv->ldu_priv), GFP_KERNEL); if (!dev_priv->ldu_priv) return -ENOMEM; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/gpu/drm/vmwgfx/vmwgfx_overlay.c linux-2.6.36.4-pax/drivers/gpu/drm/vmwgfx/vmwgfx_overlay.c --- linux-2.6.36.4/drivers/gpu/drm/vmwgfx/vmwgfx_overlay.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/gpu/drm/vmwgfx/vmwgfx_overlay.c 2010-12-19 13:15:00.000000000 +0100 @@ -585,7 +585,7 @@ int vmw_overlay_init(struct vmw_private return -ENOSYS; } - overlay = kmalloc(GFP_KERNEL, sizeof(*overlay)); + overlay = kmalloc(sizeof(*overlay), GFP_KERNEL); if (!overlay) return -ENOMEM; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/hid/usbhid/hiddev.c linux-2.6.36.4-pax/drivers/hid/usbhid/hiddev.c --- linux-2.6.36.4/drivers/hid/usbhid/hiddev.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/hid/usbhid/hiddev.c 2010-10-27 22:58:07.000000000 +0200 @@ -614,7 +614,7 @@ static long hiddev_ioctl(struct file *fi return put_user(HID_VERSION, (int __user *)arg); case HIDIOCAPPLICATION: - if (arg < 0 || arg >= hid->maxapplication) + if (arg >= hid->maxapplication) return -EINVAL; for (i = 0; i < hid->maxcollection; i++) diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/hwmon/k8temp.c linux-2.6.36.4-pax/drivers/hwmon/k8temp.c --- linux-2.6.36.4/drivers/hwmon/k8temp.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/hwmon/k8temp.c 2010-10-27 22:58:07.000000000 +0200 @@ -138,7 +138,7 @@ static DEVICE_ATTR(name, S_IRUGO, show_n static const struct pci_device_id k8temp_ids[] = { { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_K8_NB_MISC) }, - { 0 }, + { 0, 0, 0, 0, 0, 0, 0 }, }; MODULE_DEVICE_TABLE(pci, k8temp_ids); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/hwmon/sis5595.c linux-2.6.36.4-pax/drivers/hwmon/sis5595.c --- linux-2.6.36.4/drivers/hwmon/sis5595.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/hwmon/sis5595.c 2010-10-27 22:58:07.000000000 +0200 @@ -699,7 +699,7 @@ static struct sis5595_data *sis5595_upda static const struct pci_device_id sis5595_pci_ids[] = { { PCI_DEVICE(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_503) }, - { 0, } + { 0, 0, 0, 0, 0, 0, 0 } }; MODULE_DEVICE_TABLE(pci, sis5595_pci_ids); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/hwmon/via686a.c linux-2.6.36.4-pax/drivers/hwmon/via686a.c --- linux-2.6.36.4/drivers/hwmon/via686a.c 2011-02-24 20:16:32.000000000 +0100 +++ linux-2.6.36.4-pax/drivers/hwmon/via686a.c 2011-02-24 20:27:39.000000000 +0100 @@ -777,7 +777,7 @@ static struct via686a_data *via686a_upda static const struct pci_device_id via686a_pci_ids[] = { { PCI_DEVICE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686_4) }, - { 0, } + { 0, 0, 0, 0, 0, 0, 0 } }; MODULE_DEVICE_TABLE(pci, via686a_pci_ids); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/hwmon/vt8231.c linux-2.6.36.4-pax/drivers/hwmon/vt8231.c --- linux-2.6.36.4/drivers/hwmon/vt8231.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/hwmon/vt8231.c 2010-10-27 22:58:07.000000000 +0200 @@ -699,7 +699,7 @@ static struct platform_driver vt8231_dri static const struct pci_device_id vt8231_pci_ids[] = { { PCI_DEVICE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8231_4) }, - { 0, } + { 0, 0, 0, 0, 0, 0, 0 } }; MODULE_DEVICE_TABLE(pci, vt8231_pci_ids); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/hwmon/w83791d.c linux-2.6.36.4-pax/drivers/hwmon/w83791d.c --- linux-2.6.36.4/drivers/hwmon/w83791d.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/hwmon/w83791d.c 2010-10-27 22:58:07.000000000 +0200 @@ -329,8 +329,8 @@ static int w83791d_detect(struct i2c_cli struct i2c_board_info *info); static int w83791d_remove(struct i2c_client *client); -static int w83791d_read(struct i2c_client *client, u8 register); -static int w83791d_write(struct i2c_client *client, u8 register, u8 value); +static int w83791d_read(struct i2c_client *client, u8 reg); +static int w83791d_write(struct i2c_client *client, u8 reg, u8 value); static struct w83791d_data *w83791d_update_device(struct device *dev); #ifdef DEBUG diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/i2c/busses/i2c-i801.c linux-2.6.36.4-pax/drivers/i2c/busses/i2c-i801.c --- linux-2.6.36.4/drivers/i2c/busses/i2c-i801.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/i2c/busses/i2c-i801.c 2010-10-27 22:58:08.000000000 +0200 @@ -592,7 +592,7 @@ static const struct pci_device_id i801_i { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH10_5) }, { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PCH_SMBUS) }, { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_CPT_SMBUS) }, - { 0, } + { 0, 0, 0, 0, 0, 0, 0 } }; MODULE_DEVICE_TABLE(pci, i801_ids); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/i2c/busses/i2c-piix4.c linux-2.6.36.4-pax/drivers/i2c/busses/i2c-piix4.c --- linux-2.6.36.4/drivers/i2c/busses/i2c-piix4.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/i2c/busses/i2c-piix4.c 2010-10-27 22:58:08.000000000 +0200 @@ -124,7 +124,7 @@ static struct dmi_system_id __devinitdat .ident = "IBM", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "IBM"), }, }, - { }, + { NULL, NULL, {DMI_MATCH(DMI_NONE, {0})}, NULL } }; static int __devinit piix4_setup(struct pci_dev *PIIX4_dev, @@ -491,7 +491,7 @@ static const struct pci_device_id piix4_ PCI_DEVICE_ID_SERVERWORKS_HT1000SB) }, { PCI_DEVICE(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_HT1100LD) }, - { 0, } + { 0, 0, 0, 0, 0, 0, 0 } }; MODULE_DEVICE_TABLE (pci, piix4_ids); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/i2c/busses/i2c-sis630.c linux-2.6.36.4-pax/drivers/i2c/busses/i2c-sis630.c --- linux-2.6.36.4/drivers/i2c/busses/i2c-sis630.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/i2c/busses/i2c-sis630.c 2010-10-27 22:58:08.000000000 +0200 @@ -471,7 +471,7 @@ static struct i2c_adapter sis630_adapter static const struct pci_device_id sis630_ids[] __devinitconst = { { PCI_DEVICE(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_503) }, { PCI_DEVICE(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_LPC) }, - { 0, } + { 0, 0, 0, 0, 0, 0, 0 } }; MODULE_DEVICE_TABLE (pci, sis630_ids); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/i2c/busses/i2c-sis96x.c linux-2.6.36.4-pax/drivers/i2c/busses/i2c-sis96x.c --- linux-2.6.36.4/drivers/i2c/busses/i2c-sis96x.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/i2c/busses/i2c-sis96x.c 2010-10-27 22:58:08.000000000 +0200 @@ -247,7 +247,7 @@ static struct i2c_adapter sis96x_adapter static const struct pci_device_id sis96x_ids[] = { { PCI_DEVICE(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_SMBUS) }, - { 0, } + { 0, 0, 0, 0, 0, 0, 0 } }; MODULE_DEVICE_TABLE (pci, sis96x_ids); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/ide/ide-cd.c linux-2.6.36.4-pax/drivers/ide/ide-cd.c --- linux-2.6.36.4/drivers/ide/ide-cd.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/ide/ide-cd.c 2010-10-27 22:58:08.000000000 +0200 @@ -776,7 +776,7 @@ static void cdrom_do_block_pc(ide_drive_ alignment = queue_dma_alignment(q) | q->dma_pad_mask; if ((unsigned long)buf & alignment || blk_rq_bytes(rq) & q->dma_pad_mask - || object_is_on_stack(buf)) + || object_starts_on_stack(buf)) drive->dma = 0; } } diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/ieee1394/dv1394.c linux-2.6.36.4-pax/drivers/ieee1394/dv1394.c --- linux-2.6.36.4/drivers/ieee1394/dv1394.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/ieee1394/dv1394.c 2010-10-27 22:58:08.000000000 +0200 @@ -738,7 +738,7 @@ static void frame_prepare(struct video_c based upon DIF section and sequence */ -static void inline +static inline void frame_put_packet (struct frame *f, struct packet *p) { int section_type = p->data[0] >> 5; /* section type is in bits 5 - 7 */ @@ -2173,7 +2173,7 @@ static const struct ieee1394_device_id d .specifier_id = AVC_UNIT_SPEC_ID_ENTRY & 0xffffff, .version = AVC_SW_VERSION_ENTRY & 0xffffff }, - { } + { 0, 0, 0, 0, 0, 0 } }; MODULE_DEVICE_TABLE(ieee1394, dv1394_id_table); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/ieee1394/eth1394.c linux-2.6.36.4-pax/drivers/ieee1394/eth1394.c --- linux-2.6.36.4/drivers/ieee1394/eth1394.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/ieee1394/eth1394.c 2010-10-27 22:58:08.000000000 +0200 @@ -446,7 +446,7 @@ static const struct ieee1394_device_id e .specifier_id = ETHER1394_GASP_SPECIFIER_ID, .version = ETHER1394_GASP_VERSION, }, - {} + { 0, 0, 0, 0, 0, 0 } }; MODULE_DEVICE_TABLE(ieee1394, eth1394_id_table); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/ieee1394/hosts.c linux-2.6.36.4-pax/drivers/ieee1394/hosts.c --- linux-2.6.36.4/drivers/ieee1394/hosts.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/ieee1394/hosts.c 2010-10-27 22:58:08.000000000 +0200 @@ -78,6 +78,7 @@ static int dummy_isoctl(struct hpsb_iso } static struct hpsb_host_driver dummy_driver = { + .name = "dummy", .transmit_packet = dummy_transmit_packet, .devctl = dummy_devctl, .isoctl = dummy_isoctl diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/ieee1394/init_ohci1394_dma.c linux-2.6.36.4-pax/drivers/ieee1394/init_ohci1394_dma.c --- linux-2.6.36.4/drivers/ieee1394/init_ohci1394_dma.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/ieee1394/init_ohci1394_dma.c 2011-02-24 15:22:39.000000000 +0100 @@ -257,7 +257,7 @@ void __init init_ohci1394_dma_on_all_con for (func = 0; func < 8; func++) { u32 class = read_pci_config(num,slot,func, PCI_CLASS_REVISION); - if ((class == 0xffffffff)) + if (class == 0xffffffff) continue; /* No device at this func */ if (class>>8 != PCI_CLASS_SERIAL_FIREWIRE_OHCI) diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/ieee1394/ohci1394.c linux-2.6.36.4-pax/drivers/ieee1394/ohci1394.c --- linux-2.6.36.4/drivers/ieee1394/ohci1394.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/ieee1394/ohci1394.c 2010-10-27 22:58:08.000000000 +0200 @@ -148,9 +148,9 @@ printk(level "%s: " fmt "\n" , OHCI1394_ printk(level "%s: fw-host%d: " fmt "\n" , OHCI1394_DRIVER_NAME, ohci->host->id , ## args) /* Module Parameters */ -static int phys_dma = 1; +static int phys_dma; module_param(phys_dma, int, 0444); -MODULE_PARM_DESC(phys_dma, "Enable physical DMA (default = 1)."); +MODULE_PARM_DESC(phys_dma, "Enable physical DMA (default = 0)."); static void dma_trm_tasklet(unsigned long data); static void dma_trm_reset(struct dma_trm_ctx *d); @@ -3445,7 +3445,7 @@ static struct pci_device_id ohci1394_pci .subvendor = PCI_ANY_ID, .subdevice = PCI_ANY_ID, }, - { 0, }, + { 0, 0, 0, 0, 0, 0, 0 }, }; MODULE_DEVICE_TABLE(pci, ohci1394_pci_tbl); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/ieee1394/raw1394.c linux-2.6.36.4-pax/drivers/ieee1394/raw1394.c --- linux-2.6.36.4/drivers/ieee1394/raw1394.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/ieee1394/raw1394.c 2010-10-27 22:58:08.000000000 +0200 @@ -3001,7 +3001,7 @@ static const struct ieee1394_device_id r .match_flags = IEEE1394_MATCH_SPECIFIER_ID | IEEE1394_MATCH_VERSION, .specifier_id = CAMERA_UNIT_SPEC_ID_ENTRY & 0xffffff, .version = (CAMERA_SW_VERSION_ENTRY + 2) & 0xffffff}, - {} + { 0, 0, 0, 0, 0, 0 } }; MODULE_DEVICE_TABLE(ieee1394, raw1394_id_table); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/ieee1394/sbp2.c linux-2.6.36.4-pax/drivers/ieee1394/sbp2.c --- linux-2.6.36.4/drivers/ieee1394/sbp2.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/ieee1394/sbp2.c 2010-10-27 22:58:08.000000000 +0200 @@ -289,7 +289,7 @@ static const struct ieee1394_device_id s .match_flags = IEEE1394_MATCH_SPECIFIER_ID | IEEE1394_MATCH_VERSION, .specifier_id = SBP2_UNIT_SPEC_ID_ENTRY & 0xffffff, .version = SBP2_SW_VERSION_ENTRY & 0xffffff}, - {} + { 0, 0, 0, 0, 0, 0 } }; MODULE_DEVICE_TABLE(ieee1394, sbp2_id_table); @@ -2107,7 +2107,7 @@ MODULE_DESCRIPTION("IEEE-1394 SBP-2 prot MODULE_SUPPORTED_DEVICE(SBP2_DEVICE_NAME); MODULE_LICENSE("GPL"); -static int sbp2_module_init(void) +static int __init sbp2_module_init(void) { int ret; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/ieee1394/video1394.c linux-2.6.36.4-pax/drivers/ieee1394/video1394.c --- linux-2.6.36.4/drivers/ieee1394/video1394.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/ieee1394/video1394.c 2010-10-27 22:58:08.000000000 +0200 @@ -1307,7 +1307,7 @@ static const struct ieee1394_device_id v .specifier_id = CAMERA_UNIT_SPEC_ID_ENTRY & 0xffffff, .version = (CAMERA_SW_VERSION_ENTRY + 2) & 0xffffff }, - { } + { 0, 0, 0, 0, 0, 0 } }; MODULE_DEVICE_TABLE(ieee1394, video1394_id_table); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/infiniband/core/cm.c linux-2.6.36.4-pax/drivers/infiniband/core/cm.c --- linux-2.6.36.4/drivers/infiniband/core/cm.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/infiniband/core/cm.c 2010-10-27 22:58:08.000000000 +0200 @@ -113,7 +113,7 @@ static char const counter_group_names[CM struct cm_counter_group { struct kobject obj; - atomic_long_t counter[CM_ATTR_COUNT]; + atomic_long_unchecked_t counter[CM_ATTR_COUNT]; }; struct cm_counter_attribute { @@ -1387,7 +1387,7 @@ static void cm_dup_req_handler(struct cm struct ib_mad_send_buf *msg = NULL; int ret; - atomic_long_inc(&work->port->counter_group[CM_RECV_DUPLICATES]. + atomic_long_inc_unchecked(&work->port->counter_group[CM_RECV_DUPLICATES]. counter[CM_REQ_COUNTER]); /* Quick state check to discard duplicate REQs. */ @@ -1765,7 +1765,7 @@ static void cm_dup_rep_handler(struct cm if (!cm_id_priv) return; - atomic_long_inc(&work->port->counter_group[CM_RECV_DUPLICATES]. + atomic_long_inc_unchecked(&work->port->counter_group[CM_RECV_DUPLICATES]. counter[CM_REP_COUNTER]); ret = cm_alloc_response_msg(work->port, work->mad_recv_wc, &msg); if (ret) @@ -1932,7 +1932,7 @@ static int cm_rtu_handler(struct cm_work if (cm_id_priv->id.state != IB_CM_REP_SENT && cm_id_priv->id.state != IB_CM_MRA_REP_RCVD) { spin_unlock_irq(&cm_id_priv->lock); - atomic_long_inc(&work->port->counter_group[CM_RECV_DUPLICATES]. + atomic_long_inc_unchecked(&work->port->counter_group[CM_RECV_DUPLICATES]. counter[CM_RTU_COUNTER]); goto out; } @@ -2111,7 +2111,7 @@ static int cm_dreq_handler(struct cm_wor cm_id_priv = cm_acquire_id(dreq_msg->remote_comm_id, dreq_msg->local_comm_id); if (!cm_id_priv) { - atomic_long_inc(&work->port->counter_group[CM_RECV_DUPLICATES]. + atomic_long_inc_unchecked(&work->port->counter_group[CM_RECV_DUPLICATES]. counter[CM_DREQ_COUNTER]); cm_issue_drep(work->port, work->mad_recv_wc); return -EINVAL; @@ -2132,7 +2132,7 @@ static int cm_dreq_handler(struct cm_wor case IB_CM_MRA_REP_RCVD: break; case IB_CM_TIMEWAIT: - atomic_long_inc(&work->port->counter_group[CM_RECV_DUPLICATES]. + atomic_long_inc_unchecked(&work->port->counter_group[CM_RECV_DUPLICATES]. counter[CM_DREQ_COUNTER]); if (cm_alloc_response_msg(work->port, work->mad_recv_wc, &msg)) goto unlock; @@ -2146,7 +2146,7 @@ static int cm_dreq_handler(struct cm_wor cm_free_msg(msg); goto deref; case IB_CM_DREQ_RCVD: - atomic_long_inc(&work->port->counter_group[CM_RECV_DUPLICATES]. + atomic_long_inc_unchecked(&work->port->counter_group[CM_RECV_DUPLICATES]. counter[CM_DREQ_COUNTER]); goto unlock; default: @@ -2504,7 +2504,7 @@ static int cm_mra_handler(struct cm_work ib_modify_mad(cm_id_priv->av.port->mad_agent, cm_id_priv->msg, timeout)) { if (cm_id_priv->id.lap_state == IB_CM_MRA_LAP_RCVD) - atomic_long_inc(&work->port-> + atomic_long_inc_unchecked(&work->port-> counter_group[CM_RECV_DUPLICATES]. counter[CM_MRA_COUNTER]); goto out; @@ -2513,7 +2513,7 @@ static int cm_mra_handler(struct cm_work break; case IB_CM_MRA_REQ_RCVD: case IB_CM_MRA_REP_RCVD: - atomic_long_inc(&work->port->counter_group[CM_RECV_DUPLICATES]. + atomic_long_inc_unchecked(&work->port->counter_group[CM_RECV_DUPLICATES]. counter[CM_MRA_COUNTER]); /* fall through */ default: @@ -2675,7 +2675,7 @@ static int cm_lap_handler(struct cm_work case IB_CM_LAP_IDLE: break; case IB_CM_MRA_LAP_SENT: - atomic_long_inc(&work->port->counter_group[CM_RECV_DUPLICATES]. + atomic_long_inc_unchecked(&work->port->counter_group[CM_RECV_DUPLICATES]. counter[CM_LAP_COUNTER]); if (cm_alloc_response_msg(work->port, work->mad_recv_wc, &msg)) goto unlock; @@ -2691,7 +2691,7 @@ static int cm_lap_handler(struct cm_work cm_free_msg(msg); goto deref; case IB_CM_LAP_RCVD: - atomic_long_inc(&work->port->counter_group[CM_RECV_DUPLICATES]. + atomic_long_inc_unchecked(&work->port->counter_group[CM_RECV_DUPLICATES]. counter[CM_LAP_COUNTER]); goto unlock; default: @@ -2975,7 +2975,7 @@ static int cm_sidr_req_handler(struct cm cur_cm_id_priv = cm_insert_remote_sidr(cm_id_priv); if (cur_cm_id_priv) { spin_unlock_irq(&cm.lock); - atomic_long_inc(&work->port->counter_group[CM_RECV_DUPLICATES]. + atomic_long_inc_unchecked(&work->port->counter_group[CM_RECV_DUPLICATES]. counter[CM_SIDR_REQ_COUNTER]); goto out; /* Duplicate message. */ } @@ -3186,10 +3186,10 @@ static void cm_send_handler(struct ib_ma if (!msg->context[0] && (attr_index != CM_REJ_COUNTER)) msg->retries = 1; - atomic_long_add(1 + msg->retries, + atomic_long_add_unchecked(1 + msg->retries, &port->counter_group[CM_XMIT].counter[attr_index]); if (msg->retries) - atomic_long_add(msg->retries, + atomic_long_add_unchecked(msg->retries, &port->counter_group[CM_XMIT_RETRIES]. counter[attr_index]); @@ -3399,7 +3399,7 @@ static void cm_recv_handler(struct ib_ma } attr_id = be16_to_cpu(mad_recv_wc->recv_buf.mad->mad_hdr.attr_id); - atomic_long_inc(&port->counter_group[CM_RECV]. + atomic_long_inc_unchecked(&port->counter_group[CM_RECV]. counter[attr_id - CM_ATTR_ID_OFFSET]); work = kmalloc(sizeof *work + sizeof(struct ib_sa_path_rec) * paths, @@ -3597,7 +3597,7 @@ static ssize_t cm_show_counter(struct ko cm_attr = container_of(attr, struct cm_counter_attribute, attr); return sprintf(buf, "%ld\n", - atomic_long_read(&group->counter[cm_attr->index])); + atomic_long_read_unchecked(&group->counter[cm_attr->index])); } static const struct sysfs_ops cm_counter_ops = { diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/infiniband/hw/qib/qib.h linux-2.6.36.4-pax/drivers/infiniband/hw/qib/qib.h --- linux-2.6.36.4/drivers/infiniband/hw/qib/qib.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/infiniband/hw/qib/qib.h 2010-10-27 22:58:08.000000000 +0200 @@ -51,6 +51,7 @@ #include #include #include +#include #include "qib_common.h" #include "qib_verbs.h" diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/input/keyboard/atkbd.c linux-2.6.36.4-pax/drivers/input/keyboard/atkbd.c --- linux-2.6.36.4/drivers/input/keyboard/atkbd.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/input/keyboard/atkbd.c 2010-10-27 22:58:08.000000000 +0200 @@ -1240,7 +1240,7 @@ static struct serio_device_id atkbd_seri .id = SERIO_ANY, .extra = SERIO_ANY, }, - { 0 } + { 0, 0, 0, 0 } }; MODULE_DEVICE_TABLE(serio, atkbd_serio_ids); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/input/mouse/lifebook.c linux-2.6.36.4-pax/drivers/input/mouse/lifebook.c --- linux-2.6.36.4/drivers/input/mouse/lifebook.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/input/mouse/lifebook.c 2010-10-27 22:58:08.000000000 +0200 @@ -123,7 +123,7 @@ static const struct dmi_system_id __init DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook B142"), }, }, - { } + { NULL, NULL, {DMI_MATCH(DMI_NONE, {0})}, NULL} }; void __init lifebook_module_init(void) diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/input/mouse/psmouse-base.c linux-2.6.36.4-pax/drivers/input/mouse/psmouse-base.c --- linux-2.6.36.4/drivers/input/mouse/psmouse-base.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/input/mouse/psmouse-base.c 2010-10-27 22:58:08.000000000 +0200 @@ -1462,7 +1462,7 @@ static struct serio_device_id psmouse_se .id = SERIO_ANY, .extra = SERIO_ANY, }, - { 0 } + { 0, 0, 0, 0 } }; MODULE_DEVICE_TABLE(serio, psmouse_serio_ids); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/input/mouse/synaptics.c linux-2.6.36.4-pax/drivers/input/mouse/synaptics.c --- linux-2.6.36.4/drivers/input/mouse/synaptics.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/input/mouse/synaptics.c 2010-10-27 22:58:08.000000000 +0200 @@ -476,7 +476,7 @@ static void synaptics_process_packet(str break; case 2: if (SYN_MODEL_PEN(priv->model_id)) - ; /* Nothing, treat a pen as a single finger */ + break; /* Nothing, treat a pen as a single finger */ break; case 4 ... 15: if (SYN_CAP_PALMDETECT(priv->capabilities)) @@ -705,7 +705,6 @@ static const struct dmi_system_id __init DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE M300"), }, - }, { /* Toshiba Portege M300 */ @@ -714,9 +713,8 @@ static const struct dmi_system_id __init DMI_MATCH(DMI_PRODUCT_NAME, "Portable PC"), DMI_MATCH(DMI_PRODUCT_VERSION, "Version 1.0"), }, - }, - { } + { NULL, NULL, {DMI_MATCH(DMI_NONE, {0})}, NULL } #endif }; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/input/mousedev.c linux-2.6.36.4-pax/drivers/input/mousedev.c --- linux-2.6.36.4/drivers/input/mousedev.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/input/mousedev.c 2010-10-27 22:58:08.000000000 +0200 @@ -762,7 +762,7 @@ static ssize_t mousedev_read(struct file spin_unlock_irq(&client->packet_lock); - if (copy_to_user(buffer, data, count)) + if (count > sizeof(data) || copy_to_user(buffer, data, count)) return -EFAULT; return count; @@ -1064,7 +1064,7 @@ static struct input_handler mousedev_han #ifdef CONFIG_INPUT_MOUSEDEV_PSAUX static struct miscdevice psaux_mouse = { - PSMOUSE_MINOR, "psaux", &mousedev_fops + PSMOUSE_MINOR, "psaux", &mousedev_fops, {NULL, NULL}, NULL, NULL }; static int psaux_registered; #endif diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/input/serio/i8042-x86ia64io.h linux-2.6.36.4-pax/drivers/input/serio/i8042-x86ia64io.h --- linux-2.6.36.4/drivers/input/serio/i8042-x86ia64io.h 2011-02-24 20:16:19.000000000 +0100 +++ linux-2.6.36.4-pax/drivers/input/serio/i8042-x86ia64io.h 2011-02-24 20:29:41.000000000 +0100 @@ -183,7 +183,7 @@ static const struct dmi_system_id __init DMI_MATCH(DMI_PRODUCT_VERSION, "Rev 1"), }, }, - { } + { NULL, NULL, {DMI_MATCH(DMI_NONE, {0})}, NULL } }; /* @@ -427,7 +427,7 @@ static const struct dmi_system_id __init DMI_MATCH(DMI_PRODUCT_NAME, "Vostro V13"), }, }, - { } + { NULL, NULL, {DMI_MATCH(DMI_NONE, {0})}, NULL } }; static const struct dmi_system_id __initconst i8042_dmi_reset_table[] = { @@ -501,7 +501,7 @@ static const struct dmi_system_id __init DMI_MATCH(DMI_PRODUCT_NAME, "Vostro 1720"), }, }, - { } + { NULL, NULL, {DMI_MATCH(DMI_NONE, {0})}, NULL } }; #ifdef CONFIG_PNP @@ -520,7 +520,7 @@ static const struct dmi_system_id __init DMI_MATCH(DMI_BOARD_VENDOR, "MICRO-STAR INTERNATIONAL CO., LTD"), }, }, - { } + { NULL, NULL, {DMI_MATCH(DMI_NONE, {0})}, NULL } }; static const struct dmi_system_id __initconst i8042_dmi_laptop_table[] = { @@ -544,7 +544,7 @@ static const struct dmi_system_id __init DMI_MATCH(DMI_CHASSIS_TYPE, "14"), /* Sub-Notebook */ }, }, - { } + { NULL, NULL, {DMI_MATCH(DMI_NONE, {0})}, NULL } }; #endif @@ -629,7 +629,7 @@ static const struct dmi_system_id __init DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 4280"), }, }, - { } + { NULL, NULL, {DMI_MATCH(DMI_NONE, {0})}, NULL } }; #endif /* CONFIG_X86 */ diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/input/serio/serio_raw.c linux-2.6.36.4-pax/drivers/input/serio/serio_raw.c --- linux-2.6.36.4/drivers/input/serio/serio_raw.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/input/serio/serio_raw.c 2010-10-27 22:58:08.000000000 +0200 @@ -376,7 +376,7 @@ static struct serio_device_id serio_raw_ .id = SERIO_ANY, .extra = SERIO_ANY, }, - { 0 } + { 0, 0, 0, 0 } }; MODULE_DEVICE_TABLE(serio, serio_raw_serio_ids); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/isdn/gigaset/common.c linux-2.6.36.4-pax/drivers/isdn/gigaset/common.c --- linux-2.6.36.4/drivers/isdn/gigaset/common.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/isdn/gigaset/common.c 2011-01-14 14:58:29.000000000 +0100 @@ -723,7 +723,7 @@ struct cardstate *gigaset_initcs(struct cs->commands_pending = 0; cs->cur_at_seq = 0; cs->gotfwver = -1; - cs->open_count = 0; + local_set(&cs->open_count, 0); cs->dev = NULL; cs->tty = NULL; cs->tty_dev = NULL; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/isdn/gigaset/gigaset.h linux-2.6.36.4-pax/drivers/isdn/gigaset/gigaset.h --- linux-2.6.36.4/drivers/isdn/gigaset/gigaset.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/isdn/gigaset/gigaset.h 2011-01-25 20:15:13.000000000 +0100 @@ -35,6 +35,7 @@ #include #include #include +#include #define GIG_VERSION {0, 5, 0, 0} #define GIG_COMPAT {0, 4, 0, 0} @@ -434,7 +435,7 @@ struct cardstate { spinlock_t cmdlock; unsigned curlen, cmdbytes; - unsigned open_count; + local_t open_count; struct tty_struct *tty; struct tasklet_struct if_wake_tasklet; unsigned control_state; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/isdn/gigaset/interface.c linux-2.6.36.4-pax/drivers/isdn/gigaset/interface.c --- linux-2.6.36.4/drivers/isdn/gigaset/interface.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/isdn/gigaset/interface.c 2011-01-14 14:59:58.000000000 +0100 @@ -160,9 +160,7 @@ static int if_open(struct tty_struct *tt return -ERESTARTSYS; tty->driver_data = cs; - ++cs->open_count; - - if (cs->open_count == 1) { + if (local_inc_return(&cs->open_count) == 1) { spin_lock_irqsave(&cs->lock, flags); cs->tty = tty; spin_unlock_irqrestore(&cs->lock, flags); @@ -190,10 +188,10 @@ static void if_close(struct tty_struct * if (!cs->connected) gig_dbg(DEBUG_IF, "not connected"); /* nothing to do */ - else if (!cs->open_count) + else if (!local_read(&cs->open_count)) dev_warn(cs->dev, "%s: device not opened\n", __func__); else { - if (!--cs->open_count) { + if (!local_dec_return(&cs->open_count)) { spin_lock_irqsave(&cs->lock, flags); cs->tty = NULL; spin_unlock_irqrestore(&cs->lock, flags); @@ -228,7 +226,7 @@ static int if_ioctl(struct tty_struct *t if (!cs->connected) { gig_dbg(DEBUG_IF, "not connected"); retval = -ENODEV; - } else if (!cs->open_count) + } else if (!local_read(&cs->open_count)) dev_warn(cs->dev, "%s: device not opened\n", __func__); else { retval = 0; @@ -358,7 +356,7 @@ static int if_write(struct tty_struct *t retval = -ENODEV; goto done; } - if (!cs->open_count) { + if (!local_read(&cs->open_count)) { dev_warn(cs->dev, "%s: device not opened\n", __func__); retval = -ENODEV; goto done; @@ -411,7 +409,7 @@ static int if_write_room(struct tty_stru if (!cs->connected) { gig_dbg(DEBUG_IF, "not connected"); retval = -ENODEV; - } else if (!cs->open_count) + } else if (!local_read(&cs->open_count)) dev_warn(cs->dev, "%s: device not opened\n", __func__); else if (cs->mstate != MS_LOCKED) { dev_warn(cs->dev, "can't write to unlocked device\n"); @@ -441,7 +439,7 @@ static int if_chars_in_buffer(struct tty if (!cs->connected) gig_dbg(DEBUG_IF, "not connected"); - else if (!cs->open_count) + else if (!local_read(&cs->open_count)) dev_warn(cs->dev, "%s: device not opened\n", __func__); else if (cs->mstate != MS_LOCKED) dev_warn(cs->dev, "can't write to unlocked device\n"); @@ -469,7 +467,7 @@ static void if_throttle(struct tty_struc if (!cs->connected) gig_dbg(DEBUG_IF, "not connected"); /* nothing to do */ - else if (!cs->open_count) + else if (!local_read(&cs->open_count)) dev_warn(cs->dev, "%s: device not opened\n", __func__); else gig_dbg(DEBUG_IF, "%s: not implemented\n", __func__); @@ -493,7 +491,7 @@ static void if_unthrottle(struct tty_str if (!cs->connected) gig_dbg(DEBUG_IF, "not connected"); /* nothing to do */ - else if (!cs->open_count) + else if (!local_read(&cs->open_count)) dev_warn(cs->dev, "%s: device not opened\n", __func__); else gig_dbg(DEBUG_IF, "%s: not implemented\n", __func__); @@ -524,7 +522,7 @@ static void if_set_termios(struct tty_st goto out; } - if (!cs->open_count) { + if (!local_read(&cs->open_count)) { dev_warn(cs->dev, "%s: device not opened\n", __func__); goto out; } diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/isdn/hardware/avm/b1.c linux-2.6.36.4-pax/drivers/isdn/hardware/avm/b1.c --- linux-2.6.36.4/drivers/isdn/hardware/avm/b1.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/isdn/hardware/avm/b1.c 2010-10-27 22:58:08.000000000 +0200 @@ -176,7 +176,7 @@ int b1_load_t4file(avmcard *card, capilo } if (left) { if (t4file->user) { - if (copy_from_user(buf, dp, left)) + if (left > sizeof buf || copy_from_user(buf, dp, left)) return -EFAULT; } else { memcpy(buf, dp, left); @@ -224,7 +224,7 @@ int b1_load_config(avmcard *card, capilo } if (left) { if (config->user) { - if (copy_from_user(buf, dp, left)) + if (left > sizeof buf || copy_from_user(buf, dp, left)) return -EFAULT; } else { memcpy(buf, dp, left); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/isdn/icn/icn.c linux-2.6.36.4-pax/drivers/isdn/icn/icn.c --- linux-2.6.36.4/drivers/isdn/icn/icn.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/isdn/icn/icn.c 2010-10-27 22:58:08.000000000 +0200 @@ -1045,7 +1045,7 @@ icn_writecmd(const u_char * buf, int len if (count > len) count = len; if (user) { - if (copy_from_user(msg, buf, count)) + if (count > sizeof msg || copy_from_user(msg, buf, count)) return -EFAULT; } else memcpy(msg, buf, count); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/lguest/core.c linux-2.6.36.4-pax/drivers/lguest/core.c --- linux-2.6.36.4/drivers/lguest/core.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/lguest/core.c 2010-12-14 21:18:01.000000000 +0100 @@ -92,9 +92,17 @@ static __init int map_switcher(void) * it's worked so far. The end address needs +1 because __get_vm_area * allocates an extra guard page, so we need space for that. */ + +#if defined(CONFIG_MODULES) && defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC) + switcher_vma = __get_vm_area(TOTAL_SWITCHER_PAGES * PAGE_SIZE, + VM_ALLOC | VM_KERNEXEC, SWITCHER_ADDR, SWITCHER_ADDR + + (TOTAL_SWITCHER_PAGES+1) * PAGE_SIZE); +#else switcher_vma = __get_vm_area(TOTAL_SWITCHER_PAGES * PAGE_SIZE, VM_ALLOC, SWITCHER_ADDR, SWITCHER_ADDR + (TOTAL_SWITCHER_PAGES+1) * PAGE_SIZE); +#endif + if (!switcher_vma) { err = -ENOMEM; printk("lguest: could not map switcher pages high\n"); @@ -119,7 +127,7 @@ static __init int map_switcher(void) * Now the Switcher is mapped at the right address, we can't fail! * Copy in the compiled-in Switcher code (from _switcher.S). */ - memcpy(switcher_vma->addr, start_switcher_text, + memcpy(switcher_vma->addr, ktla_ktva(start_switcher_text), end_switcher_text - start_switcher_text); printk(KERN_INFO "lguest: mapped switcher at %p\n", diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/lguest/x86/core.c linux-2.6.36.4-pax/drivers/lguest/x86/core.c --- linux-2.6.36.4/drivers/lguest/x86/core.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/lguest/x86/core.c 2010-12-22 13:06:14.000000000 +0100 @@ -59,7 +59,7 @@ static struct { /* Offset from where switcher.S was compiled to where we've copied it */ static unsigned long switcher_offset(void) { - return SWITCHER_ADDR - (unsigned long)start_switcher_text; + return SWITCHER_ADDR - (unsigned long)ktla_ktva(start_switcher_text); } /* This cpu's struct lguest_pages. */ @@ -100,7 +100,13 @@ static void copy_in_guest_info(struct lg * These copies are pretty cheap, so we do them unconditionally: */ /* Save the current Host top-level page directory. */ + +#ifdef CONFIG_PAX_PER_CPU_PGD + pages->state.host_cr3 = read_cr3(); +#else pages->state.host_cr3 = __pa(current->mm->pgd); +#endif + /* * Set up the Guest's page tables to see this CPU's pages (and no * other CPU's pages). @@ -547,7 +553,7 @@ void __init lguest_arch_host_init(void) * compiled-in switcher code and the high-mapped copy we just made. */ for (i = 0; i < IDT_ENTRIES; i++) - default_idt_entries[i] += switcher_offset(); + default_idt_entries[i] = ktla_ktva(default_idt_entries[i]) + switcher_offset(); /* * Set up the Switcher's per-cpu areas. @@ -630,7 +636,7 @@ void __init lguest_arch_host_init(void) * it will be undisturbed when we switch. To change %cs and jump we * need this structure to feed to Intel's "lcall" instruction. */ - lguest_entry.offset = (long)switch_to_guest + switcher_offset(); + lguest_entry.offset = (long)ktla_ktva(switch_to_guest) + switcher_offset(); lguest_entry.segment = LGUEST_CS; /* diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/lguest/x86/switcher_32.S linux-2.6.36.4-pax/drivers/lguest/x86/switcher_32.S --- linux-2.6.36.4/drivers/lguest/x86/switcher_32.S 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/lguest/x86/switcher_32.S 2010-12-23 00:42:26.000000000 +0100 @@ -87,6 +87,7 @@ #include #include #include +#include // We mark the start of the code to copy // It's placed in .text tho it's never run here @@ -149,6 +150,13 @@ ENTRY(switch_to_guest) // Changes type when we load it: damn Intel! // For after we switch over our page tables // That entry will be read-only: we'd crash. + +#ifdef CONFIG_PAX_KERNEXEC + mov %cr0, %edx + xor $X86_CR0_WP, %edx + mov %edx, %cr0 +#endif + movl $(GDT_ENTRY_TSS*8), %edx ltr %dx @@ -157,9 +165,15 @@ ENTRY(switch_to_guest) // Let's clear it again for our return. // The GDT descriptor of the Host // Points to the table after two "size" bytes - movl (LGUEST_PAGES_host_gdt_desc+2)(%eax), %edx + movl (LGUEST_PAGES_host_gdt_desc+2)(%eax), %eax // Clear "used" from type field (byte 5, bit 2) - andb $0xFD, (GDT_ENTRY_TSS*8 + 5)(%edx) + andb $0xFD, (GDT_ENTRY_TSS*8 + 5)(%eax) + +#ifdef CONFIG_PAX_KERNEXEC + mov %cr0, %eax + xor $X86_CR0_WP, %eax + mov %eax, %cr0 +#endif // Once our page table's switched, the Guest is live! // The Host fades as we run this final step. @@ -295,13 +309,12 @@ deliver_to_host: // I consulted gcc, and it gave // These instructions, which I gladly credit: leal (%edx,%ebx,8), %eax - movzwl (%eax),%edx - movl 4(%eax), %eax - xorw %ax, %ax - orl %eax, %edx + movl 4(%eax), %edx + movw (%eax), %dx // Now the address of the handler's in %edx // We call it now: its "iret" drops us home. - jmp *%edx + ljmp $__KERNEL_CS, $1f +1: jmp *%edx // Every interrupt can come to us here // But we must truly tell each apart. diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/macintosh/via-pmu-backlight.c linux-2.6.36.4-pax/drivers/macintosh/via-pmu-backlight.c --- linux-2.6.36.4/drivers/macintosh/via-pmu-backlight.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/macintosh/via-pmu-backlight.c 2010-10-27 22:58:44.000000000 +0200 @@ -15,7 +15,7 @@ #define MAX_PMU_LEVEL 0xFF -static struct backlight_ops pmu_backlight_data; +static const struct backlight_ops pmu_backlight_data; static DEFINE_SPINLOCK(pmu_backlight_lock); static int sleeping, uses_pmu_bl; static u8 bl_curve[FB_BACKLIGHT_LEVELS]; @@ -115,7 +115,7 @@ static int pmu_backlight_get_brightness( return bd->props.brightness; } -static struct backlight_ops pmu_backlight_data = { +static const struct backlight_ops pmu_backlight_data = { .get_brightness = pmu_backlight_get_brightness, .update_status = pmu_backlight_update_status, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/macintosh/via-pmu.c linux-2.6.36.4-pax/drivers/macintosh/via-pmu.c --- linux-2.6.36.4/drivers/macintosh/via-pmu.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/macintosh/via-pmu.c 2010-10-27 22:58:44.000000000 +0200 @@ -2256,7 +2256,7 @@ static int pmu_sleep_valid(suspend_state && (pmac_call_feature(PMAC_FTR_SLEEP_STATE, NULL, 0, -1) >= 0); } -static struct platform_suspend_ops pmu_pm_ops = { +static const struct platform_suspend_ops pmu_pm_ops = { .enter = powerbook_sleep, .valid = pmu_sleep_valid, }; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/md/bitmap.c linux-2.6.36.4-pax/drivers/md/bitmap.c --- linux-2.6.36.4/drivers/md/bitmap.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/md/bitmap.c 2010-10-27 22:58:08.000000000 +0200 @@ -55,7 +55,7 @@ # if DEBUG > 0 # define PRINTK(x...) printk(KERN_DEBUG x) # else -# define PRINTK(x...) +# define PRINTK(x...) do {} while (0) # endif #endif diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/md/dm-ioctl.c linux-2.6.36.4-pax/drivers/md/dm-ioctl.c --- linux-2.6.36.4/drivers/md/dm-ioctl.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/md/dm-ioctl.c 2011-02-24 15:22:59.000000000 +0100 @@ -1488,7 +1488,7 @@ static int validate_params(uint cmd, str cmd == DM_LIST_VERSIONS_CMD) return 0; - if ((cmd == DM_DEV_CREATE_CMD)) { + if (cmd == DM_DEV_CREATE_CMD) { if (!*param->name) { DMWARN("name not supplied when creating device"); return -EINVAL; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/md/dm-table.c linux-2.6.36.4-pax/drivers/md/dm-table.c --- linux-2.6.36.4/drivers/md/dm-table.c 2011-01-12 15:14:10.000000000 +0100 +++ linux-2.6.36.4-pax/drivers/md/dm-table.c 2011-01-12 15:14:28.000000000 +0100 @@ -366,7 +366,7 @@ static int device_area_is_invalid(struct if (!dev_size) return 0; - if ((start >= dev_size) || (start + len > dev_size)) { + if ((start >= dev_size) || (len > dev_size - start)) { DMWARN("%s: %s too small for target: " "start=%llu, len=%llu, dev_size=%llu", dm_device_name(ti->table->md), bdevname(bdev, b), diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/md/md.c linux-2.6.36.4-pax/drivers/md/md.c --- linux-2.6.36.4/drivers/md/md.c 2011-02-24 20:16:19.000000000 +0100 +++ linux-2.6.36.4-pax/drivers/md/md.c 2011-02-24 20:27:38.000000000 +0100 @@ -1876,7 +1876,7 @@ static int bind_rdev_to_array(mdk_rdev_t ko = &part_to_dev(rdev->bdev->bd_part)->kobj; if (sysfs_create_link(&rdev->kobj, ko, "block")) - /* failure here is OK */; + /* failure here is OK */{} rdev->sysfs_state = sysfs_get_dirent_safe(rdev->kobj.sd, "state"); list_add_rcu(&rdev->same_set, &mddev->disks); @@ -2488,7 +2488,7 @@ slot_store(mdk_rdev_t *rdev, const char sysfs_notify_dirent_safe(rdev->sysfs_state); sprintf(nm, "rd%d", rdev->raid_disk); if (sysfs_create_link(&rdev->mddev->kobj, &rdev->kobj, nm)) - /* failure here is OK */; + /* failure here is OK */{} /* don't wakeup anyone, leave that to userspace. */ } else { if (slot >= rdev->mddev->raid_disks) @@ -4568,7 +4568,7 @@ int md_run(mddev_t *mddev) char nm[20]; sprintf(nm, "rd%d", rdev->raid_disk); if (sysfs_create_link(&mddev->kobj, &rdev->kobj, nm)) - /* failure here is OK */; + /* failure here is OK */{} } set_bit(MD_RECOVERY_NEEDED, &mddev->recovery); @@ -6415,7 +6415,7 @@ static int md_seq_show(struct seq_file * chunk_kb ? "KB" : "B"); if (bitmap->file) { seq_printf(seq, ", file: "); - seq_path(seq, &bitmap->file->f_path, " \t\n"); + seq_path(seq, &bitmap->file->f_path, " \t\n\\"); } seq_printf(seq, "\n"); @@ -6509,7 +6509,7 @@ static int is_mddev_idle(mddev_t *mddev, struct gendisk *disk = rdev->bdev->bd_contains->bd_disk; curr_events = (int)part_stat_read(&disk->part0, sectors[0]) + (int)part_stat_read(&disk->part0, sectors[1]) - - atomic_read(&disk->sync_io); + atomic_read_unchecked(&disk->sync_io); /* sync IO will cause sync_io to increase before the disk_stats * as sync_io is counted when a request starts, and * disk_stats is counted when it completes. @@ -7027,7 +7027,7 @@ static int remove_and_add_spares(mddev_t sprintf(nm, "rd%d", rdev->raid_disk); if (sysfs_create_link(&mddev->kobj, &rdev->kobj, nm)) - /* failure here is OK */; + /* failure here is OK */{} spares++; md_new_event(mddev); set_bit(MD_CHANGE_DEVS, &mddev->flags); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/md/md.h linux-2.6.36.4-pax/drivers/md/md.h --- linux-2.6.36.4/drivers/md/md.h 2011-02-24 20:16:32.000000000 +0100 +++ linux-2.6.36.4-pax/drivers/md/md.h 2011-02-24 20:27:39.000000000 +0100 @@ -363,7 +363,7 @@ static inline void rdev_dec_pending(mdk_ static inline void md_sync_acct(struct block_device *bdev, unsigned long nr_sectors) { - atomic_add(nr_sectors, &bdev->bd_contains->bd_disk->sync_io); + atomic_add_unchecked(nr_sectors, &bdev->bd_contains->bd_disk->sync_io); } struct mdk_personality diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/media/IR/lirc_dev.c linux-2.6.36.4-pax/drivers/media/IR/lirc_dev.c --- linux-2.6.36.4/drivers/media/IR/lirc_dev.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/media/IR/lirc_dev.c 2010-10-27 22:58:44.000000000 +0200 @@ -155,7 +155,7 @@ static int lirc_thread(void *irctl) } -static struct file_operations fops = { +static const struct file_operations fops = { .owner = THIS_MODULE, .read = lirc_dev_fop_read, .write = lirc_dev_fop_write, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/media/dvb/dvb-core/dvbdev.c linux-2.6.36.4-pax/drivers/media/dvb/dvb-core/dvbdev.c --- linux-2.6.36.4/drivers/media/dvb/dvb-core/dvbdev.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/media/dvb/dvb-core/dvbdev.c 2010-10-27 22:58:44.000000000 +0200 @@ -196,6 +196,7 @@ int dvb_register_device(struct dvb_adapt const struct dvb_device *template, void *priv, int type) { struct dvb_device *dvbdev; + /* cannot be const, see this function */ struct file_operations *dvbdevfops; struct device *clsdev; int minor; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/media/radio/radio-cadet.c linux-2.6.36.4-pax/drivers/media/radio/radio-cadet.c --- linux-2.6.36.4/drivers/media/radio/radio-cadet.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/media/radio/radio-cadet.c 2010-10-27 22:58:08.000000000 +0200 @@ -347,7 +347,7 @@ static ssize_t cadet_read(struct file *f while (i < count && dev->rdsin != dev->rdsout) readbuf[i++] = dev->rdsbuf[dev->rdsout++]; - if (copy_to_user(data, readbuf, i)) + if (i > sizeof readbuf || copy_to_user(data, readbuf, i)) return -EFAULT; return i; } diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/message/fusion/mptdebug.h linux-2.6.36.4-pax/drivers/message/fusion/mptdebug.h --- linux-2.6.36.4/drivers/message/fusion/mptdebug.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/message/fusion/mptdebug.h 2010-10-27 22:58:08.000000000 +0200 @@ -71,7 +71,7 @@ CMD; \ } #else -#define MPT_CHECK_LOGGING(IOC, CMD, BITS) +#define MPT_CHECK_LOGGING(IOC, CMD, BITS) do {} while (0) #endif diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/message/fusion/mptsas.c linux-2.6.36.4-pax/drivers/message/fusion/mptsas.c --- linux-2.6.36.4/drivers/message/fusion/mptsas.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/message/fusion/mptsas.c 2010-10-27 22:58:08.000000000 +0200 @@ -439,6 +439,23 @@ mptsas_is_end_device(struct mptsas_devin return 0; } +static inline void +mptsas_set_rphy(MPT_ADAPTER *ioc, struct mptsas_phyinfo *phy_info, struct sas_rphy *rphy) +{ + if (phy_info->port_details) { + phy_info->port_details->rphy = rphy; + dsaswideprintk(ioc, printk(MYIOC_s_DEBUG_FMT "sas_rphy_add: rphy=%p\n", + ioc->name, rphy)); + } + + if (rphy) { + dsaswideprintk(ioc, dev_printk(KERN_DEBUG, + &rphy->dev, MYIOC_s_FMT "add:", ioc->name)); + dsaswideprintk(ioc, printk(MYIOC_s_DEBUG_FMT "rphy=%p release=%p\n", + ioc->name, rphy, rphy->dev.release)); + } +} + /* no mutex */ static void mptsas_port_delete(MPT_ADAPTER *ioc, struct mptsas_portinfo_details * port_details) @@ -477,23 +494,6 @@ mptsas_get_rphy(struct mptsas_phyinfo *p return NULL; } -static inline void -mptsas_set_rphy(MPT_ADAPTER *ioc, struct mptsas_phyinfo *phy_info, struct sas_rphy *rphy) -{ - if (phy_info->port_details) { - phy_info->port_details->rphy = rphy; - dsaswideprintk(ioc, printk(MYIOC_s_DEBUG_FMT "sas_rphy_add: rphy=%p\n", - ioc->name, rphy)); - } - - if (rphy) { - dsaswideprintk(ioc, dev_printk(KERN_DEBUG, - &rphy->dev, MYIOC_s_FMT "add:", ioc->name)); - dsaswideprintk(ioc, printk(MYIOC_s_DEBUG_FMT "rphy=%p release=%p\n", - ioc->name, rphy, rphy->dev.release)); - } -} - static inline struct sas_port * mptsas_get_port(struct mptsas_phyinfo *phy_info) { diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/message/fusion/mptscsih.c linux-2.6.36.4-pax/drivers/message/fusion/mptscsih.c --- linux-2.6.36.4/drivers/message/fusion/mptscsih.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/message/fusion/mptscsih.c 2010-10-27 22:58:08.000000000 +0200 @@ -1268,15 +1268,16 @@ mptscsih_info(struct Scsi_Host *SChost) h = shost_priv(SChost); - if (h) { - if (h->info_kbuf == NULL) - if ((h->info_kbuf = kmalloc(0x1000 /* 4Kb */, GFP_KERNEL)) == NULL) - return h->info_kbuf; - h->info_kbuf[0] = '\0'; + if (!h) + return NULL; - mpt_print_ioc_summary(h->ioc, h->info_kbuf, &size, 0, 0); - h->info_kbuf[size-1] = '\0'; - } + if (h->info_kbuf == NULL) + if ((h->info_kbuf = kmalloc(0x1000 /* 4Kb */, GFP_KERNEL)) == NULL) + return h->info_kbuf; + h->info_kbuf[0] = '\0'; + + mpt_print_ioc_summary(h->ioc, h->info_kbuf, &size, 0, 0); + h->info_kbuf[size-1] = '\0'; return h->info_kbuf; } diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/message/i2o/i2o_proc.c linux-2.6.36.4-pax/drivers/message/i2o/i2o_proc.c --- linux-2.6.36.4/drivers/message/i2o/i2o_proc.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/message/i2o/i2o_proc.c 2010-10-27 22:58:08.000000000 +0200 @@ -255,13 +255,6 @@ static char *scsi_devices[] = { "Array Controller Device" }; -static char *chtostr(u8 * chars, int n) -{ - char tmp[256]; - tmp[0] = 0; - return strncat(tmp, (char *)chars, n); -} - static int i2o_report_query_status(struct seq_file *seq, int block_status, char *group) { @@ -838,8 +831,7 @@ static int i2o_seq_show_ddm_table(struct seq_printf(seq, "%-#7x", ddm_table.i2o_vendor_id); seq_printf(seq, "%-#8x", ddm_table.module_id); - seq_printf(seq, "%-29s", - chtostr(ddm_table.module_name_version, 28)); + seq_printf(seq, "%-.28s", ddm_table.module_name_version); seq_printf(seq, "%9d ", ddm_table.data_size); seq_printf(seq, "%8d", ddm_table.code_size); @@ -940,8 +932,8 @@ static int i2o_seq_show_drivers_stored(s seq_printf(seq, "%-#7x", dst->i2o_vendor_id); seq_printf(seq, "%-#8x", dst->module_id); - seq_printf(seq, "%-29s", chtostr(dst->module_name_version, 28)); - seq_printf(seq, "%-9s", chtostr(dst->date, 8)); + seq_printf(seq, "%-.28s", dst->module_name_version); + seq_printf(seq, "%-.8s", dst->date); seq_printf(seq, "%8d ", dst->module_size); seq_printf(seq, "%8d ", dst->mpb_size); seq_printf(seq, "0x%04x", dst->module_flags); @@ -1272,14 +1264,10 @@ static int i2o_seq_show_dev_identity(str seq_printf(seq, "Device Class : %s\n", i2o_get_class_name(work16[0])); seq_printf(seq, "Owner TID : %0#5x\n", work16[2]); seq_printf(seq, "Parent TID : %0#5x\n", work16[3]); - seq_printf(seq, "Vendor info : %s\n", - chtostr((u8 *) (work32 + 2), 16)); - seq_printf(seq, "Product info : %s\n", - chtostr((u8 *) (work32 + 6), 16)); - seq_printf(seq, "Description : %s\n", - chtostr((u8 *) (work32 + 10), 16)); - seq_printf(seq, "Product rev. : %s\n", - chtostr((u8 *) (work32 + 14), 8)); + seq_printf(seq, "Vendor info : %.16s\n", (u8 *) (work32 + 2)); + seq_printf(seq, "Product info : %.16s\n", (u8 *) (work32 + 6)); + seq_printf(seq, "Description : %.16s\n", (u8 *) (work32 + 10)); + seq_printf(seq, "Product rev. : %.8s\n", (u8 *) (work32 + 14)); seq_printf(seq, "Serial number : "); print_serial_number(seq, (u8 *) (work32 + 16), @@ -1324,10 +1312,8 @@ static int i2o_seq_show_ddm_identity(str } seq_printf(seq, "Registering DDM TID : 0x%03x\n", result.ddm_tid); - seq_printf(seq, "Module name : %s\n", - chtostr(result.module_name, 24)); - seq_printf(seq, "Module revision : %s\n", - chtostr(result.module_rev, 8)); + seq_printf(seq, "Module name : %.24s\n", result.module_name); + seq_printf(seq, "Module revision : %.8s\n", result.module_rev); seq_printf(seq, "Serial number : "); print_serial_number(seq, result.serial_number, sizeof(result) - 36); @@ -1358,14 +1344,10 @@ static int i2o_seq_show_uinfo(struct seq return 0; } - seq_printf(seq, "Device name : %s\n", - chtostr(result.device_name, 64)); - seq_printf(seq, "Service name : %s\n", - chtostr(result.service_name, 64)); - seq_printf(seq, "Physical name : %s\n", - chtostr(result.physical_location, 64)); - seq_printf(seq, "Instance number : %s\n", - chtostr(result.instance_number, 4)); + seq_printf(seq, "Device name : %.64s\n", result.device_name); + seq_printf(seq, "Service name : %.64s\n", result.service_name); + seq_printf(seq, "Physical name : %.64s\n", result.physical_location); + seq_printf(seq, "Instance number : %.4s\n", result.instance_number); return 0; } diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/mfd/janz-cmodio.c linux-2.6.36.4-pax/drivers/mfd/janz-cmodio.c --- linux-2.6.36.4/drivers/mfd/janz-cmodio.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/mfd/janz-cmodio.c 2010-10-27 22:58:08.000000000 +0200 @@ -13,6 +13,7 @@ #include #include +#include #include #include #include diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/misc/kgdbts.c linux-2.6.36.4-pax/drivers/misc/kgdbts.c --- linux-2.6.36.4/drivers/misc/kgdbts.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/misc/kgdbts.c 2010-10-27 22:58:44.000000000 +0200 @@ -118,7 +118,7 @@ } while (0) #define MAX_CONFIG_LEN 40 -static struct kgdb_io kgdbts_io_ops; +static const struct kgdb_io kgdbts_io_ops; static char get_buf[BUFMAX]; static int get_buf_cnt; static char put_buf[BUFMAX]; @@ -1114,7 +1114,7 @@ static void kgdbts_post_exp_handler(void module_put(THIS_MODULE); } -static struct kgdb_io kgdbts_io_ops = { +static const struct kgdb_io kgdbts_io_ops = { .name = "kgdbts", .read_char = kgdbts_get_char, .write_char = kgdbts_put_char, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/misc/sgi-gru/gruhandles.c linux-2.6.36.4-pax/drivers/misc/sgi-gru/gruhandles.c --- linux-2.6.36.4/drivers/misc/sgi-gru/gruhandles.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/misc/sgi-gru/gruhandles.c 2010-10-27 22:58:08.000000000 +0200 @@ -44,8 +44,8 @@ static void update_mcs_stats(enum mcs_op unsigned long nsec; nsec = CLKS2NSEC(clks); - atomic_long_inc(&mcs_op_statistics[op].count); - atomic_long_add(nsec, &mcs_op_statistics[op].total); + atomic_long_inc_unchecked(&mcs_op_statistics[op].count); + atomic_long_add_unchecked(nsec, &mcs_op_statistics[op].total); if (mcs_op_statistics[op].max < nsec) mcs_op_statistics[op].max = nsec; } diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/misc/sgi-gru/gruprocfs.c linux-2.6.36.4-pax/drivers/misc/sgi-gru/gruprocfs.c --- linux-2.6.36.4/drivers/misc/sgi-gru/gruprocfs.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/misc/sgi-gru/gruprocfs.c 2010-10-27 22:58:08.000000000 +0200 @@ -32,9 +32,9 @@ #define printstat(s, f) printstat_val(s, &gru_stats.f, #f) -static void printstat_val(struct seq_file *s, atomic_long_t *v, char *id) +static void printstat_val(struct seq_file *s, atomic_long_unchecked_t *v, char *id) { - unsigned long val = atomic_long_read(v); + unsigned long val = atomic_long_read_unchecked(v); seq_printf(s, "%16lu %s\n", val, id); } @@ -134,8 +134,8 @@ static int mcs_statistics_show(struct se seq_printf(s, "%-20s%12s%12s%12s\n", "#id", "count", "aver-clks", "max-clks"); for (op = 0; op < mcsop_last; op++) { - count = atomic_long_read(&mcs_op_statistics[op].count); - total = atomic_long_read(&mcs_op_statistics[op].total); + count = atomic_long_read_unchecked(&mcs_op_statistics[op].count); + total = atomic_long_read_unchecked(&mcs_op_statistics[op].total); max = mcs_op_statistics[op].max; seq_printf(s, "%-20s%12ld%12ld%12ld\n", id[op], count, count ? total / count : 0, max); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/misc/sgi-gru/grutables.h linux-2.6.36.4-pax/drivers/misc/sgi-gru/grutables.h --- linux-2.6.36.4/drivers/misc/sgi-gru/grutables.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/misc/sgi-gru/grutables.h 2010-10-27 22:58:08.000000000 +0200 @@ -167,82 +167,82 @@ extern unsigned int gru_max_gids; * GRU statistics. */ struct gru_stats_s { - atomic_long_t vdata_alloc; - atomic_long_t vdata_free; - atomic_long_t gts_alloc; - atomic_long_t gts_free; - atomic_long_t gms_alloc; - atomic_long_t gms_free; - atomic_long_t gts_double_allocate; - atomic_long_t assign_context; - atomic_long_t assign_context_failed; - atomic_long_t free_context; - atomic_long_t load_user_context; - atomic_long_t load_kernel_context; - atomic_long_t lock_kernel_context; - atomic_long_t unlock_kernel_context; - atomic_long_t steal_user_context; - atomic_long_t steal_kernel_context; - atomic_long_t steal_context_failed; - atomic_long_t nopfn; - atomic_long_t asid_new; - atomic_long_t asid_next; - atomic_long_t asid_wrap; - atomic_long_t asid_reuse; - atomic_long_t intr; - atomic_long_t intr_cbr; - atomic_long_t intr_tfh; - atomic_long_t intr_spurious; - atomic_long_t intr_mm_lock_failed; - atomic_long_t call_os; - atomic_long_t call_os_wait_queue; - atomic_long_t user_flush_tlb; - atomic_long_t user_unload_context; - atomic_long_t user_exception; - atomic_long_t set_context_option; - atomic_long_t check_context_retarget_intr; - atomic_long_t check_context_unload; - atomic_long_t tlb_dropin; - atomic_long_t tlb_preload_page; - atomic_long_t tlb_dropin_fail_no_asid; - atomic_long_t tlb_dropin_fail_upm; - atomic_long_t tlb_dropin_fail_invalid; - atomic_long_t tlb_dropin_fail_range_active; - atomic_long_t tlb_dropin_fail_idle; - atomic_long_t tlb_dropin_fail_fmm; - atomic_long_t tlb_dropin_fail_no_exception; - atomic_long_t tfh_stale_on_fault; - atomic_long_t mmu_invalidate_range; - atomic_long_t mmu_invalidate_page; - atomic_long_t flush_tlb; - atomic_long_t flush_tlb_gru; - atomic_long_t flush_tlb_gru_tgh; - atomic_long_t flush_tlb_gru_zero_asid; - - atomic_long_t copy_gpa; - atomic_long_t read_gpa; - - atomic_long_t mesq_receive; - atomic_long_t mesq_receive_none; - atomic_long_t mesq_send; - atomic_long_t mesq_send_failed; - atomic_long_t mesq_noop; - atomic_long_t mesq_send_unexpected_error; - atomic_long_t mesq_send_lb_overflow; - atomic_long_t mesq_send_qlimit_reached; - atomic_long_t mesq_send_amo_nacked; - atomic_long_t mesq_send_put_nacked; - atomic_long_t mesq_page_overflow; - atomic_long_t mesq_qf_locked; - atomic_long_t mesq_qf_noop_not_full; - atomic_long_t mesq_qf_switch_head_failed; - atomic_long_t mesq_qf_unexpected_error; - atomic_long_t mesq_noop_unexpected_error; - atomic_long_t mesq_noop_lb_overflow; - atomic_long_t mesq_noop_qlimit_reached; - atomic_long_t mesq_noop_amo_nacked; - atomic_long_t mesq_noop_put_nacked; - atomic_long_t mesq_noop_page_overflow; + atomic_long_unchecked_t vdata_alloc; + atomic_long_unchecked_t vdata_free; + atomic_long_unchecked_t gts_alloc; + atomic_long_unchecked_t gts_free; + atomic_long_unchecked_t gms_alloc; + atomic_long_unchecked_t gms_free; + atomic_long_unchecked_t gts_double_allocate; + atomic_long_unchecked_t assign_context; + atomic_long_unchecked_t assign_context_failed; + atomic_long_unchecked_t free_context; + atomic_long_unchecked_t load_user_context; + atomic_long_unchecked_t load_kernel_context; + atomic_long_unchecked_t lock_kernel_context; + atomic_long_unchecked_t unlock_kernel_context; + atomic_long_unchecked_t steal_user_context; + atomic_long_unchecked_t steal_kernel_context; + atomic_long_unchecked_t steal_context_failed; + atomic_long_unchecked_t nopfn; + atomic_long_unchecked_t asid_new; + atomic_long_unchecked_t asid_next; + atomic_long_unchecked_t asid_wrap; + atomic_long_unchecked_t asid_reuse; + atomic_long_unchecked_t intr; + atomic_long_unchecked_t intr_cbr; + atomic_long_unchecked_t intr_tfh; + atomic_long_unchecked_t intr_spurious; + atomic_long_unchecked_t intr_mm_lock_failed; + atomic_long_unchecked_t call_os; + atomic_long_unchecked_t call_os_wait_queue; + atomic_long_unchecked_t user_flush_tlb; + atomic_long_unchecked_t user_unload_context; + atomic_long_unchecked_t user_exception; + atomic_long_unchecked_t set_context_option; + atomic_long_unchecked_t check_context_retarget_intr; + atomic_long_unchecked_t check_context_unload; + atomic_long_unchecked_t tlb_dropin; + atomic_long_unchecked_t tlb_preload_page; + atomic_long_unchecked_t tlb_dropin_fail_no_asid; + atomic_long_unchecked_t tlb_dropin_fail_upm; + atomic_long_unchecked_t tlb_dropin_fail_invalid; + atomic_long_unchecked_t tlb_dropin_fail_range_active; + atomic_long_unchecked_t tlb_dropin_fail_idle; + atomic_long_unchecked_t tlb_dropin_fail_fmm; + atomic_long_unchecked_t tlb_dropin_fail_no_exception; + atomic_long_unchecked_t tfh_stale_on_fault; + atomic_long_unchecked_t mmu_invalidate_range; + atomic_long_unchecked_t mmu_invalidate_page; + atomic_long_unchecked_t flush_tlb; + atomic_long_unchecked_t flush_tlb_gru; + atomic_long_unchecked_t flush_tlb_gru_tgh; + atomic_long_unchecked_t flush_tlb_gru_zero_asid; + + atomic_long_unchecked_t copy_gpa; + atomic_long_unchecked_t read_gpa; + + atomic_long_unchecked_t mesq_receive; + atomic_long_unchecked_t mesq_receive_none; + atomic_long_unchecked_t mesq_send; + atomic_long_unchecked_t mesq_send_failed; + atomic_long_unchecked_t mesq_noop; + atomic_long_unchecked_t mesq_send_unexpected_error; + atomic_long_unchecked_t mesq_send_lb_overflow; + atomic_long_unchecked_t mesq_send_qlimit_reached; + atomic_long_unchecked_t mesq_send_amo_nacked; + atomic_long_unchecked_t mesq_send_put_nacked; + atomic_long_unchecked_t mesq_page_overflow; + atomic_long_unchecked_t mesq_qf_locked; + atomic_long_unchecked_t mesq_qf_noop_not_full; + atomic_long_unchecked_t mesq_qf_switch_head_failed; + atomic_long_unchecked_t mesq_qf_unexpected_error; + atomic_long_unchecked_t mesq_noop_unexpected_error; + atomic_long_unchecked_t mesq_noop_lb_overflow; + atomic_long_unchecked_t mesq_noop_qlimit_reached; + atomic_long_unchecked_t mesq_noop_amo_nacked; + atomic_long_unchecked_t mesq_noop_put_nacked; + atomic_long_unchecked_t mesq_noop_page_overflow; }; @@ -251,8 +251,8 @@ enum mcs_op {cchop_allocate, cchop_start tghop_invalidate, mcsop_last}; struct mcs_op_statistic { - atomic_long_t count; - atomic_long_t total; + atomic_long_unchecked_t count; + atomic_long_unchecked_t total; unsigned long max; }; @@ -275,7 +275,7 @@ extern struct mcs_op_statistic mcs_op_st #define STAT(id) do { \ if (gru_options & OPT_STATS) \ - atomic_long_inc(&gru_stats.id); \ + atomic_long_inc_unchecked(&gru_stats.id); \ } while (0) #ifdef CONFIG_SGI_GRU_DEBUG diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/mtd/devices/doc2000.c linux-2.6.36.4-pax/drivers/mtd/devices/doc2000.c --- linux-2.6.36.4/drivers/mtd/devices/doc2000.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/mtd/devices/doc2000.c 2010-10-27 22:58:08.000000000 +0200 @@ -776,7 +776,7 @@ static int doc_write(struct mtd_info *mt /* The ECC will not be calculated correctly if less than 512 is written */ /* DBB- - if (len != 0x200 && eccbuf) + if (len != 0x200) printk(KERN_WARNING "ECC needs a full sector write (adr: %lx size %lx)\n", (long) to, (long) len); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/mtd/devices/doc2001.c linux-2.6.36.4-pax/drivers/mtd/devices/doc2001.c --- linux-2.6.36.4/drivers/mtd/devices/doc2001.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/mtd/devices/doc2001.c 2010-10-27 22:58:08.000000000 +0200 @@ -393,7 +393,7 @@ static int doc_read (struct mtd_info *mt struct Nand *mychip = &this->chips[from >> (this->chipshift)]; /* Don't allow read past end of device */ - if (from >= this->totlen) + if (from >= this->totlen || !len) return -EINVAL; /* Don't allow a single read to cross a 512-byte block boundary */ diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/mtd/nand/denali.c linux-2.6.36.4-pax/drivers/mtd/nand/denali.c --- linux-2.6.36.4/drivers/mtd/nand/denali.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/mtd/nand/denali.c 2010-10-27 22:58:08.000000000 +0200 @@ -25,6 +25,7 @@ #include #include #include +#include #include "denali.h" diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/mtd/ubi/build.c linux-2.6.36.4-pax/drivers/mtd/ubi/build.c --- linux-2.6.36.4/drivers/mtd/ubi/build.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/mtd/ubi/build.c 2010-10-27 22:58:08.000000000 +0200 @@ -1283,7 +1283,7 @@ module_exit(ubi_exit); static int __init bytes_str_to_int(const char *str) { char *endp; - unsigned long result; + unsigned long result, scale = 1; result = simple_strtoul(str, &endp, 0); if (str == endp || result >= INT_MAX) { @@ -1294,11 +1294,11 @@ static int __init bytes_str_to_int(const switch (*endp) { case 'G': - result *= 1024; + scale *= 1024; case 'M': - result *= 1024; + scale *= 1024; case 'K': - result *= 1024; + scale *= 1024; if (endp[1] == 'i' && endp[2] == 'B') endp += 2; case '\0': @@ -1309,7 +1309,13 @@ static int __init bytes_str_to_int(const return -EINVAL; } - return result; + if ((intoverflow_t)result*scale >= INT_MAX) { + printk(KERN_ERR "UBI error: incorrect bytes count: \"%s\"\n", + str); + return -EINVAL; + } + + return result*scale; } /** diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/net/e1000e/82571.c linux-2.6.36.4-pax/drivers/net/e1000e/82571.c --- linux-2.6.36.4/drivers/net/e1000e/82571.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/net/e1000e/82571.c 2010-10-27 22:58:44.000000000 +0200 @@ -207,6 +207,7 @@ static s32 e1000_init_mac_params_82571(s { struct e1000_hw *hw = &adapter->hw; struct e1000_mac_info *mac = &hw->mac; + /* cannot be const */ struct e1000_mac_operations *func = &mac->ops; u32 swsm = 0; u32 swsm2 = 0; @@ -1703,7 +1704,7 @@ static void e1000_clear_hw_cntrs_82571(s er32(ICRXDMTC); } -static struct e1000_mac_operations e82571_mac_ops = { +static const struct e1000_mac_operations e82571_mac_ops = { /* .check_mng_mode: mac type dependent */ /* .check_for_link: media type dependent */ .id_led_init = e1000e_id_led_init, @@ -1725,7 +1726,7 @@ static struct e1000_mac_operations e8257 .read_mac_addr = e1000_read_mac_addr_82571, }; -static struct e1000_phy_operations e82_phy_ops_igp = { +static const struct e1000_phy_operations e82_phy_ops_igp = { .acquire = e1000_get_hw_semaphore_82571, .check_polarity = e1000_check_polarity_igp, .check_reset_block = e1000e_check_reset_block_generic, @@ -1743,7 +1744,7 @@ static struct e1000_phy_operations e82_p .cfg_on_link_up = NULL, }; -static struct e1000_phy_operations e82_phy_ops_m88 = { +static const struct e1000_phy_operations e82_phy_ops_m88 = { .acquire = e1000_get_hw_semaphore_82571, .check_polarity = e1000_check_polarity_m88, .check_reset_block = e1000e_check_reset_block_generic, @@ -1761,7 +1762,7 @@ static struct e1000_phy_operations e82_p .cfg_on_link_up = NULL, }; -static struct e1000_phy_operations e82_phy_ops_bm = { +static const struct e1000_phy_operations e82_phy_ops_bm = { .acquire = e1000_get_hw_semaphore_82571, .check_polarity = e1000_check_polarity_m88, .check_reset_block = e1000e_check_reset_block_generic, @@ -1779,7 +1780,7 @@ static struct e1000_phy_operations e82_p .cfg_on_link_up = NULL, }; -static struct e1000_nvm_operations e82571_nvm_ops = { +static const struct e1000_nvm_operations e82571_nvm_ops = { .acquire = e1000_acquire_nvm_82571, .read = e1000e_read_nvm_eerd, .release = e1000_release_nvm_82571, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/net/e1000e/e1000.h linux-2.6.36.4-pax/drivers/net/e1000e/e1000.h --- linux-2.6.36.4/drivers/net/e1000e/e1000.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/net/e1000e/e1000.h 2010-10-27 22:58:44.000000000 +0200 @@ -379,9 +379,9 @@ struct e1000_info { u32 pba; u32 max_hw_frame_size; s32 (*get_variants)(struct e1000_adapter *); - struct e1000_mac_operations *mac_ops; - struct e1000_phy_operations *phy_ops; - struct e1000_nvm_operations *nvm_ops; + const struct e1000_mac_operations *mac_ops; + const struct e1000_phy_operations *phy_ops; + const struct e1000_nvm_operations *nvm_ops; }; /* hardware capability, feature, and workaround flags */ diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/net/e1000e/es2lan.c linux-2.6.36.4-pax/drivers/net/e1000e/es2lan.c --- linux-2.6.36.4/drivers/net/e1000e/es2lan.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/net/e1000e/es2lan.c 2010-10-27 22:58:44.000000000 +0200 @@ -205,6 +205,7 @@ static s32 e1000_init_mac_params_80003es { struct e1000_hw *hw = &adapter->hw; struct e1000_mac_info *mac = &hw->mac; + /* cannot be const */ struct e1000_mac_operations *func = &mac->ops; /* Set media type */ @@ -1431,7 +1432,7 @@ static void e1000_clear_hw_cntrs_80003es er32(ICRXDMTC); } -static struct e1000_mac_operations es2_mac_ops = { +static const struct e1000_mac_operations es2_mac_ops = { .read_mac_addr = e1000_read_mac_addr_80003es2lan, .id_led_init = e1000e_id_led_init, .check_mng_mode = e1000e_check_mng_mode_generic, @@ -1453,7 +1454,7 @@ static struct e1000_mac_operations es2_m .setup_led = e1000e_setup_led_generic, }; -static struct e1000_phy_operations es2_phy_ops = { +static const struct e1000_phy_operations es2_phy_ops = { .acquire = e1000_acquire_phy_80003es2lan, .check_polarity = e1000_check_polarity_m88, .check_reset_block = e1000e_check_reset_block_generic, @@ -1471,7 +1472,7 @@ static struct e1000_phy_operations es2_p .cfg_on_link_up = e1000_cfg_on_link_up_80003es2lan, }; -static struct e1000_nvm_operations es2_nvm_ops = { +static const struct e1000_nvm_operations es2_nvm_ops = { .acquire = e1000_acquire_nvm_80003es2lan, .read = e1000e_read_nvm_eerd, .release = e1000_release_nvm_80003es2lan, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/net/e1000e/hw.h linux-2.6.36.4-pax/drivers/net/e1000e/hw.h --- linux-2.6.36.4/drivers/net/e1000e/hw.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/net/e1000e/hw.h 2010-10-27 22:58:44.000000000 +0200 @@ -800,13 +800,13 @@ struct e1000_phy_operations { /* Function pointers for the NVM. */ struct e1000_nvm_operations { - s32 (*acquire)(struct e1000_hw *); - s32 (*read)(struct e1000_hw *, u16, u16, u16 *); - void (*release)(struct e1000_hw *); - s32 (*update)(struct e1000_hw *); - s32 (*valid_led_default)(struct e1000_hw *, u16 *); - s32 (*validate)(struct e1000_hw *); - s32 (*write)(struct e1000_hw *, u16, u16, u16 *); + s32 (* const acquire)(struct e1000_hw *); + s32 (* const read)(struct e1000_hw *, u16, u16, u16 *); + void (* const release)(struct e1000_hw *); + s32 (* const update)(struct e1000_hw *); + s32 (* const valid_led_default)(struct e1000_hw *, u16 *); + s32 (* const validate)(struct e1000_hw *); + s32 (* const write)(struct e1000_hw *, u16, u16, u16 *); }; struct e1000_mac_info { @@ -886,6 +886,7 @@ struct e1000_phy_info { }; struct e1000_nvm_info { + /* cannot be const */ struct e1000_nvm_operations ops; enum e1000_nvm_type type; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/net/e1000e/ich8lan.c linux-2.6.36.4-pax/drivers/net/e1000e/ich8lan.c --- linux-2.6.36.4/drivers/net/e1000e/ich8lan.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/net/e1000e/ich8lan.c 2010-10-27 22:58:44.000000000 +0200 @@ -3856,7 +3856,7 @@ static void e1000_clear_hw_cntrs_ich8lan } } -static struct e1000_mac_operations ich8_mac_ops = { +static const struct e1000_mac_operations ich8_mac_ops = { .id_led_init = e1000e_id_led_init, /* check_mng_mode dependent on mac type */ .check_for_link = e1000_check_for_copper_link_ich8lan, @@ -3875,7 +3875,7 @@ static struct e1000_mac_operations ich8_ /* id_led_init dependent on mac type */ }; -static struct e1000_phy_operations ich8_phy_ops = { +static const struct e1000_phy_operations ich8_phy_ops = { .acquire = e1000_acquire_swflag_ich8lan, .check_reset_block = e1000_check_reset_block_ich8lan, .commit = NULL, @@ -3889,7 +3889,7 @@ static struct e1000_phy_operations ich8_ .write_reg = e1000e_write_phy_reg_igp, }; -static struct e1000_nvm_operations ich8_nvm_ops = { +static const struct e1000_nvm_operations ich8_nvm_ops = { .acquire = e1000_acquire_nvm_ich8lan, .read = e1000_read_nvm_ich8lan, .release = e1000_release_nvm_ich8lan, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/net/igb/e1000_82575.c linux-2.6.36.4-pax/drivers/net/igb/e1000_82575.c --- linux-2.6.36.4/drivers/net/igb/e1000_82575.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/net/igb/e1000_82575.c 2010-10-27 22:58:44.000000000 +0200 @@ -1698,7 +1698,7 @@ u16 igb_rxpbs_adjust_82580(u32 data) return ret_val; } -static struct e1000_mac_operations e1000_mac_ops_82575 = { +static const struct e1000_mac_operations e1000_mac_ops_82575 = { .init_hw = igb_init_hw_82575, .check_for_link = igb_check_for_link_82575, .rar_set = igb_rar_set, @@ -1706,13 +1706,13 @@ static struct e1000_mac_operations e1000 .get_speed_and_duplex = igb_get_speed_and_duplex_copper, }; -static struct e1000_phy_operations e1000_phy_ops_82575 = { +static const struct e1000_phy_operations e1000_phy_ops_82575 = { .acquire = igb_acquire_phy_82575, .get_cfg_done = igb_get_cfg_done_82575, .release = igb_release_phy_82575, }; -static struct e1000_nvm_operations e1000_nvm_ops_82575 = { +static const struct e1000_nvm_operations e1000_nvm_ops_82575 = { .acquire = igb_acquire_nvm_82575, .read = igb_read_nvm_eerd, .release = igb_release_nvm_82575, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/net/igb/e1000_hw.h linux-2.6.36.4-pax/drivers/net/igb/e1000_hw.h --- linux-2.6.36.4/drivers/net/igb/e1000_hw.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/net/igb/e1000_hw.h 2010-10-27 22:58:44.000000000 +0200 @@ -323,17 +323,17 @@ struct e1000_phy_operations { }; struct e1000_nvm_operations { - s32 (*acquire)(struct e1000_hw *); - s32 (*read)(struct e1000_hw *, u16, u16, u16 *); - void (*release)(struct e1000_hw *); - s32 (*write)(struct e1000_hw *, u16, u16, u16 *); + s32 (* const acquire)(struct e1000_hw *); + s32 (* const read)(struct e1000_hw *, u16, u16, u16 *); + void (* const release)(struct e1000_hw *); + s32 (* const write)(struct e1000_hw *, u16, u16, u16 *); }; struct e1000_info { s32 (*get_invariants)(struct e1000_hw *); - struct e1000_mac_operations *mac_ops; - struct e1000_phy_operations *phy_ops; - struct e1000_nvm_operations *nvm_ops; + const struct e1000_mac_operations *mac_ops; + const struct e1000_phy_operations *phy_ops; + const struct e1000_nvm_operations *nvm_ops; }; extern const struct e1000_info e1000_82575_info; @@ -412,6 +412,7 @@ struct e1000_phy_info { }; struct e1000_nvm_info { + /* cannot be const */ struct e1000_nvm_operations ops; enum e1000_nvm_type type; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/net/irda/vlsi_ir.c linux-2.6.36.4-pax/drivers/net/irda/vlsi_ir.c --- linux-2.6.36.4/drivers/net/irda/vlsi_ir.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/net/irda/vlsi_ir.c 2010-10-27 22:58:08.000000000 +0200 @@ -907,13 +907,12 @@ static netdev_tx_t vlsi_hard_start_xmit( /* no race - tx-ring already empty */ vlsi_set_baud(idev, iobase); netif_wake_queue(ndev); - } - else - ; + } else { /* keep the speed change pending like it would * for any len>0 packet. tx completion interrupt * will apply it when the tx ring becomes empty. */ + } spin_unlock_irqrestore(&idev->lock, flags); dev_kfree_skb_any(skb); return NETDEV_TX_OK; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/net/macvtap.c linux-2.6.36.4-pax/drivers/net/macvtap.c --- linux-2.6.36.4/drivers/net/macvtap.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/net/macvtap.c 2010-12-14 21:18:01.000000000 +0100 @@ -464,8 +464,9 @@ static ssize_t macvtap_get_user(struct m vnet_hdr_len = q->vnet_hdr_sz; err = -EINVAL; - if ((len -= vnet_hdr_len) < 0) + if (len < vnet_hdr_len) goto err; + len -= vnet_hdr_len; err = memcpy_fromiovecend((void *)&vnet_hdr, iv, 0, sizeof(vnet_hdr)); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/net/pcnet32.c linux-2.6.36.4-pax/drivers/net/pcnet32.c --- linux-2.6.36.4/drivers/net/pcnet32.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/net/pcnet32.c 2010-10-27 22:58:08.000000000 +0200 @@ -82,7 +82,7 @@ static int cards_found; /* * VLB I/O addresses */ -static unsigned int pcnet32_portlist[] __initdata = +static unsigned int pcnet32_portlist[] __devinitdata = { 0x300, 0x320, 0x340, 0x360, 0 }; static int pcnet32_debug; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/net/ppp_generic.c linux-2.6.36.4-pax/drivers/net/ppp_generic.c --- linux-2.6.36.4/drivers/net/ppp_generic.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/net/ppp_generic.c 2010-10-27 22:58:08.000000000 +0200 @@ -985,7 +985,6 @@ ppp_net_ioctl(struct net_device *dev, st void __user *addr = (void __user *) ifr->ifr_ifru.ifru_data; struct ppp_stats stats; struct ppp_comp_stats cstats; - char *vers; switch (cmd) { case SIOCGPPPSTATS: @@ -1007,8 +1006,7 @@ ppp_net_ioctl(struct net_device *dev, st break; case SIOCGPPPVER: - vers = PPP_VERSION; - if (copy_to_user(addr, vers, strlen(vers) + 1)) + if (copy_to_user(addr, PPP_VERSION, sizeof(PPP_VERSION))) break; err = 0; break; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/net/tg3.c linux-2.6.36.4-pax/drivers/net/tg3.c --- linux-2.6.36.4/drivers/net/tg3.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/net/tg3.c 2010-10-27 22:58:08.000000000 +0200 @@ -12433,7 +12433,7 @@ static void __devinit tg3_read_vpd(struc cnt = pci_read_vpd(tp->pdev, pos, TG3_NVM_VPD_LEN - pos, &vpd_data[pos]); - if (cnt == -ETIMEDOUT || -EINTR) + if (cnt == -ETIMEDOUT || cnt == -EINTR) cnt = 0; else if (cnt < 0) goto out_not_found; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/net/tg3.h linux-2.6.36.4-pax/drivers/net/tg3.h --- linux-2.6.36.4/drivers/net/tg3.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/net/tg3.h 2010-10-27 22:58:08.000000000 +0200 @@ -131,6 +131,7 @@ #define CHIPREV_ID_5750_A0 0x4000 #define CHIPREV_ID_5750_A1 0x4001 #define CHIPREV_ID_5750_A3 0x4003 +#define CHIPREV_ID_5750_C1 0x4201 #define CHIPREV_ID_5750_C2 0x4202 #define CHIPREV_ID_5752_A0_HW 0x5000 #define CHIPREV_ID_5752_A0 0x6000 diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/net/tulip/de4x5.c linux-2.6.36.4-pax/drivers/net/tulip/de4x5.c --- linux-2.6.36.4/drivers/net/tulip/de4x5.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/net/tulip/de4x5.c 2010-10-27 22:58:08.000000000 +0200 @@ -5401,7 +5401,7 @@ de4x5_ioctl(struct net_device *dev, stru for (i=0; idev_addr[i]; } - if (copy_to_user(ioc->data, tmp.addr, ioc->len)) return -EFAULT; + if (ioc->len > sizeof tmp.addr || copy_to_user(ioc->data, tmp.addr, ioc->len)) return -EFAULT; break; case DE4X5_SET_HWADDR: /* Set the hardware address */ @@ -5441,7 +5441,7 @@ de4x5_ioctl(struct net_device *dev, stru spin_lock_irqsave(&lp->lock, flags); memcpy(&statbuf, &lp->pktStats, ioc->len); spin_unlock_irqrestore(&lp->lock, flags); - if (copy_to_user(ioc->data, &statbuf, ioc->len)) + if (ioc->len > sizeof statbuf || copy_to_user(ioc->data, &statbuf, ioc->len)) return -EFAULT; break; } diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/net/usb/hso.c linux-2.6.36.4-pax/drivers/net/usb/hso.c --- linux-2.6.36.4/drivers/net/usb/hso.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/net/usb/hso.c 2011-01-14 16:45:10.000000000 +0100 @@ -71,7 +71,7 @@ #include #include #include - +#include #define MOD_AUTHOR "Option Wireless" #define MOD_DESCRIPTION "USB High Speed Option driver" @@ -257,7 +257,7 @@ struct hso_serial { /* from usb_serial_port */ struct tty_struct *tty; - int open_count; + local_t open_count; spinlock_t serial_lock; int (*write_data) (struct hso_serial *serial); @@ -1200,7 +1200,7 @@ static void put_rxbuf_data_and_resubmit_ struct urb *urb; urb = serial->rx_urb[0]; - if (serial->open_count > 0) { + if (local_read(&serial->open_count) > 0) { count = put_rxbuf_data(urb, serial); if (count == -1) return; @@ -1236,7 +1236,7 @@ static void hso_std_serial_read_bulk_cal DUMP1(urb->transfer_buffer, urb->actual_length); /* Anyone listening? */ - if (serial->open_count == 0) + if (local_read(&serial->open_count) == 0) return; if (status == 0) { @@ -1331,8 +1331,7 @@ static int hso_serial_open(struct tty_st spin_unlock_irq(&serial->serial_lock); /* check for port already opened, if not set the termios */ - serial->open_count++; - if (serial->open_count == 1) { + if (local_inc_return(&serial->open_count) == 1) { serial->rx_state = RX_IDLE; /* Force default termio settings */ _hso_serial_set_termios(tty, NULL); @@ -1344,7 +1343,7 @@ static int hso_serial_open(struct tty_st result = hso_start_serial_device(serial->parent, GFP_KERNEL); if (result) { hso_stop_serial_device(serial->parent); - serial->open_count--; + local_dec(&serial->open_count); kref_put(&serial->parent->ref, hso_serial_ref_free); } } else { @@ -1381,10 +1380,10 @@ static void hso_serial_close(struct tty_ /* reset the rts and dtr */ /* do the actual close */ - serial->open_count--; + local_dec(&serial->open_count); - if (serial->open_count <= 0) { - serial->open_count = 0; + if (local_read(&serial->open_count) <= 0) { + local_set(&serial->open_count, 0); spin_lock_irq(&serial->serial_lock); if (serial->tty == tty) { serial->tty->driver_data = NULL; @@ -1466,7 +1465,7 @@ static void hso_serial_set_termios(struc /* the actual setup */ spin_lock_irqsave(&serial->serial_lock, flags); - if (serial->open_count) + if (local_read(&serial->open_count)) _hso_serial_set_termios(tty, old); else tty->termios = old; @@ -1930,7 +1929,7 @@ static void intr_callback(struct urb *ur D1("Pending read interrupt on port %d\n", i); spin_lock(&serial->serial_lock); if (serial->rx_state == RX_IDLE && - serial->open_count > 0) { + local_read(&serial->open_count) > 0) { /* Setup and send a ctrl req read on * port i */ if (!serial->rx_urb_filled[0]) { @@ -3120,7 +3119,7 @@ static int hso_resume(struct usb_interfa /* Start all serial ports */ for (i = 0; i < HSO_SERIAL_TTY_MINORS; i++) { if (serial_table[i] && (serial_table[i]->interface == iface)) { - if (dev2ser(serial_table[i])->open_count) { + if (local_read(&dev2ser(serial_table[i])->open_count)) { result = hso_start_serial_device(serial_table[i], GFP_NOIO); hso_kick_transmit(dev2ser(serial_table[i])); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/net/wireless/b43/debugfs.c linux-2.6.36.4-pax/drivers/net/wireless/b43/debugfs.c --- linux-2.6.36.4/drivers/net/wireless/b43/debugfs.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/net/wireless/b43/debugfs.c 2010-10-27 22:58:44.000000000 +0200 @@ -43,7 +43,7 @@ static struct dentry *rootdir; struct b43_debugfs_fops { ssize_t (*read)(struct b43_wldev *dev, char *buf, size_t bufsize); int (*write)(struct b43_wldev *dev, const char *buf, size_t count); - struct file_operations fops; + const struct file_operations fops; /* Offset of struct b43_dfs_file in struct b43_dfsentry */ size_t file_struct_offset; }; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/net/wireless/b43legacy/debugfs.c linux-2.6.36.4-pax/drivers/net/wireless/b43legacy/debugfs.c --- linux-2.6.36.4/drivers/net/wireless/b43legacy/debugfs.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/net/wireless/b43legacy/debugfs.c 2010-10-27 22:58:44.000000000 +0200 @@ -44,7 +44,7 @@ static struct dentry *rootdir; struct b43legacy_debugfs_fops { ssize_t (*read)(struct b43legacy_wldev *dev, char *buf, size_t bufsize); int (*write)(struct b43legacy_wldev *dev, const char *buf, size_t count); - struct file_operations fops; + const struct file_operations fops; /* Offset of struct b43legacy_dfs_file in struct b43legacy_dfsentry */ size_t file_struct_offset; /* Take wl->irq_lock before calling read/write? */ diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/net/wireless/iwlwifi/iwl-debug.h linux-2.6.36.4-pax/drivers/net/wireless/iwlwifi/iwl-debug.h --- linux-2.6.36.4/drivers/net/wireless/iwlwifi/iwl-debug.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/net/wireless/iwlwifi/iwl-debug.h 2010-10-27 22:58:08.000000000 +0200 @@ -68,8 +68,8 @@ do { } while (0) #else -#define IWL_DEBUG(__priv, level, fmt, args...) -#define IWL_DEBUG_LIMIT(__priv, level, fmt, args...) +#define IWL_DEBUG(__priv, level, fmt, args...) do {} while (0) +#define IWL_DEBUG_LIMIT(__priv, level, fmt, args...) do {} while (0) static inline void iwl_print_hex_dump(struct iwl_priv *priv, int level, const void *p, u32 len) {} diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/net/wireless/libertas/debugfs.c linux-2.6.36.4-pax/drivers/net/wireless/libertas/debugfs.c --- linux-2.6.36.4/drivers/net/wireless/libertas/debugfs.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/net/wireless/libertas/debugfs.c 2010-10-27 22:58:44.000000000 +0200 @@ -701,7 +701,7 @@ out_unlock: struct lbs_debugfs_files { const char *name; int perm; - struct file_operations fops; + const struct file_operations fops; }; static const struct lbs_debugfs_files debugfs_files[] = { diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/net/wireless/rndis_wlan.c linux-2.6.36.4-pax/drivers/net/wireless/rndis_wlan.c --- linux-2.6.36.4/drivers/net/wireless/rndis_wlan.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/net/wireless/rndis_wlan.c 2010-10-27 22:58:08.000000000 +0200 @@ -1236,7 +1236,7 @@ static int set_rts_threshold(struct usbn netdev_dbg(usbdev->net, "%s(): %i\n", __func__, rts_threshold); - if (rts_threshold < 0 || rts_threshold > 2347) + if (rts_threshold > 2347) rts_threshold = 2347; tmp = cpu_to_le32(rts_threshold); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/oprofile/buffer_sync.c linux-2.6.36.4-pax/drivers/oprofile/buffer_sync.c --- linux-2.6.36.4/drivers/oprofile/buffer_sync.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/oprofile/buffer_sync.c 2010-10-27 22:58:08.000000000 +0200 @@ -342,7 +342,7 @@ static void add_data(struct op_entry *en if (cookie == NO_COOKIE) offset = pc; if (cookie == INVALID_COOKIE) { - atomic_inc(&oprofile_stats.sample_lost_no_mapping); + atomic_inc_unchecked(&oprofile_stats.sample_lost_no_mapping); offset = pc; } if (cookie != last_cookie) { @@ -386,14 +386,14 @@ add_sample(struct mm_struct *mm, struct /* add userspace sample */ if (!mm) { - atomic_inc(&oprofile_stats.sample_lost_no_mm); + atomic_inc_unchecked(&oprofile_stats.sample_lost_no_mm); return 0; } cookie = lookup_dcookie(mm, s->eip, &offset); if (cookie == INVALID_COOKIE) { - atomic_inc(&oprofile_stats.sample_lost_no_mapping); + atomic_inc_unchecked(&oprofile_stats.sample_lost_no_mapping); return 0; } @@ -562,7 +562,7 @@ void sync_buffer(int cpu) /* ignore backtraces if failed to add a sample */ if (state == sb_bt_start) { state = sb_bt_ignore; - atomic_inc(&oprofile_stats.bt_lost_no_mapping); + atomic_inc_unchecked(&oprofile_stats.bt_lost_no_mapping); } } release_mm(mm); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/oprofile/event_buffer.c linux-2.6.36.4-pax/drivers/oprofile/event_buffer.c --- linux-2.6.36.4/drivers/oprofile/event_buffer.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/oprofile/event_buffer.c 2010-10-27 22:58:08.000000000 +0200 @@ -53,7 +53,7 @@ void add_event_entry(unsigned long value } if (buffer_pos == buffer_size) { - atomic_inc(&oprofile_stats.event_lost_overflow); + atomic_inc_unchecked(&oprofile_stats.event_lost_overflow); return; } diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/oprofile/oprof.c linux-2.6.36.4-pax/drivers/oprofile/oprof.c --- linux-2.6.36.4/drivers/oprofile/oprof.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/oprofile/oprof.c 2010-10-27 22:58:08.000000000 +0200 @@ -110,7 +110,7 @@ static void switch_worker(struct work_st if (oprofile_ops.switch_events()) return; - atomic_inc(&oprofile_stats.multiplex_counter); + atomic_inc_unchecked(&oprofile_stats.multiplex_counter); start_switch_worker(); } diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/oprofile/oprofile_stats.c linux-2.6.36.4-pax/drivers/oprofile/oprofile_stats.c --- linux-2.6.36.4/drivers/oprofile/oprofile_stats.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/oprofile/oprofile_stats.c 2010-10-27 22:58:08.000000000 +0200 @@ -30,11 +30,11 @@ void oprofile_reset_stats(void) cpu_buf->sample_invalid_eip = 0; } - atomic_set(&oprofile_stats.sample_lost_no_mm, 0); - atomic_set(&oprofile_stats.sample_lost_no_mapping, 0); - atomic_set(&oprofile_stats.event_lost_overflow, 0); - atomic_set(&oprofile_stats.bt_lost_no_mapping, 0); - atomic_set(&oprofile_stats.multiplex_counter, 0); + atomic_set_unchecked(&oprofile_stats.sample_lost_no_mm, 0); + atomic_set_unchecked(&oprofile_stats.sample_lost_no_mapping, 0); + atomic_set_unchecked(&oprofile_stats.event_lost_overflow, 0); + atomic_set_unchecked(&oprofile_stats.bt_lost_no_mapping, 0); + atomic_set_unchecked(&oprofile_stats.multiplex_counter, 0); } diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/oprofile/oprofile_stats.h linux-2.6.36.4-pax/drivers/oprofile/oprofile_stats.h --- linux-2.6.36.4/drivers/oprofile/oprofile_stats.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/oprofile/oprofile_stats.h 2010-10-27 22:58:08.000000000 +0200 @@ -13,11 +13,11 @@ #include struct oprofile_stat_struct { - atomic_t sample_lost_no_mm; - atomic_t sample_lost_no_mapping; - atomic_t bt_lost_no_mapping; - atomic_t event_lost_overflow; - atomic_t multiplex_counter; + atomic_unchecked_t sample_lost_no_mm; + atomic_unchecked_t sample_lost_no_mapping; + atomic_unchecked_t bt_lost_no_mapping; + atomic_unchecked_t event_lost_overflow; + atomic_unchecked_t multiplex_counter; }; extern struct oprofile_stat_struct oprofile_stats; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/oprofile/oprofilefs.c linux-2.6.36.4-pax/drivers/oprofile/oprofilefs.c --- linux-2.6.36.4/drivers/oprofile/oprofilefs.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/oprofile/oprofilefs.c 2010-10-27 22:58:08.000000000 +0200 @@ -187,7 +187,7 @@ static const struct file_operations atom int oprofilefs_create_ro_atomic(struct super_block *sb, struct dentry *root, - char const *name, atomic_t *val) + char const *name, atomic_unchecked_t *val) { struct dentry *d = __oprofilefs_create_file(sb, root, name, &atomic_ro_fops, 0444); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/parport/procfs.c linux-2.6.36.4-pax/drivers/parport/procfs.c --- linux-2.6.36.4/drivers/parport/procfs.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/parport/procfs.c 2010-10-27 22:58:08.000000000 +0200 @@ -64,7 +64,7 @@ static int do_active_device(ctl_table *t *ppos += len; - return copy_to_user(result, buffer, len) ? -EFAULT : 0; + return (len > sizeof buffer || copy_to_user(result, buffer, len)) ? -EFAULT : 0; } #ifdef CONFIG_PARPORT_1284 @@ -106,7 +106,7 @@ static int do_autoprobe(ctl_table *table *ppos += len; - return copy_to_user (result, buffer, len) ? -EFAULT : 0; + return (len > sizeof buffer || copy_to_user (result, buffer, len)) ? -EFAULT : 0; } #endif /* IEEE1284.3 support. */ diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/pci/hotplug/acpiphp_glue.c linux-2.6.36.4-pax/drivers/pci/hotplug/acpiphp_glue.c --- linux-2.6.36.4/drivers/pci/hotplug/acpiphp_glue.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/pci/hotplug/acpiphp_glue.c 2010-10-27 22:58:44.000000000 +0200 @@ -110,7 +110,7 @@ static int post_dock_fixups(struct notif } -static struct acpi_dock_ops acpiphp_dock_ops = { +static const struct acpi_dock_ops acpiphp_dock_ops = { .handler = handle_hotplug_event_func, }; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/pci/hotplug/cpqphp_nvram.c linux-2.6.36.4-pax/drivers/pci/hotplug/cpqphp_nvram.c --- linux-2.6.36.4/drivers/pci/hotplug/cpqphp_nvram.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/pci/hotplug/cpqphp_nvram.c 2010-10-27 22:58:08.000000000 +0200 @@ -428,9 +428,13 @@ static u32 store_HRT (void __iomem *rom_ void compaq_nvram_init (void __iomem *rom_start) { + +#ifndef CONFIG_PAX_KERNEXEC if (rom_start) { compaq_int15_entry_point = (rom_start + ROM_INT15_PHY_ADDR - ROM_PHY_ADDR); } +#endif + dbg("int15 entry = %p\n", compaq_int15_entry_point); /* initialize our int15 lock */ diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/pci/intel-iommu.c linux-2.6.36.4-pax/drivers/pci/intel-iommu.c --- linux-2.6.36.4/drivers/pci/intel-iommu.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/pci/intel-iommu.c 2010-10-27 22:58:44.000000000 +0200 @@ -2934,7 +2934,7 @@ static int intel_mapping_error(struct de return !dma_addr; } -struct dma_map_ops intel_dma_ops = { +const struct dma_map_ops intel_dma_ops = { .alloc_coherent = intel_alloc_coherent, .free_coherent = intel_free_coherent, .map_sg = intel_map_sg, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/pci/pcie/aspm.c linux-2.6.36.4-pax/drivers/pci/pcie/aspm.c --- linux-2.6.36.4/drivers/pci/pcie/aspm.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/pci/pcie/aspm.c 2011-02-24 15:23:22.000000000 +0100 @@ -27,9 +27,9 @@ #define MODULE_PARAM_PREFIX "pcie_aspm." /* Note: those are not register definitions */ -#define ASPM_STATE_L0S_UP (1) /* Upstream direction L0s state */ -#define ASPM_STATE_L0S_DW (2) /* Downstream direction L0s state */ -#define ASPM_STATE_L1 (4) /* L1 state */ +#define ASPM_STATE_L0S_UP (1U) /* Upstream direction L0s state */ +#define ASPM_STATE_L0S_DW (2U) /* Downstream direction L0s state */ +#define ASPM_STATE_L1 (4U) /* L1 state */ #define ASPM_STATE_L0S (ASPM_STATE_L0S_UP | ASPM_STATE_L0S_DW) #define ASPM_STATE_ALL (ASPM_STATE_L0S | ASPM_STATE_L1) diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/pci/pcie/portdrv_pci.c linux-2.6.36.4-pax/drivers/pci/pcie/portdrv_pci.c --- linux-2.6.36.4/drivers/pci/pcie/portdrv_pci.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/pci/pcie/portdrv_pci.c 2010-10-27 22:58:08.000000000 +0200 @@ -276,7 +276,7 @@ static void pcie_portdrv_err_resume(stru static const struct pci_device_id port_pci_ids[] = { { /* handle any PCI-Express port */ PCI_DEVICE_CLASS(((PCI_CLASS_BRIDGE_PCI << 8) | 0x00), ~0), - }, { /* end: all zeroes */ } + }, { 0, 0, 0, 0, 0, 0, 0 } }; MODULE_DEVICE_TABLE(pci, port_pci_ids); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/pci/probe.c linux-2.6.36.4-pax/drivers/pci/probe.c --- linux-2.6.36.4/drivers/pci/probe.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/pci/probe.c 2010-12-14 21:18:01.000000000 +0100 @@ -62,14 +62,14 @@ static ssize_t pci_bus_show_cpuaffinity( return ret; } -static ssize_t inline pci_bus_show_cpumaskaffinity(struct device *dev, +static inline ssize_t pci_bus_show_cpumaskaffinity(struct device *dev, struct device_attribute *attr, char *buf) { return pci_bus_show_cpuaffinity(dev, 0, attr, buf); } -static ssize_t inline pci_bus_show_cpulistaffinity(struct device *dev, +static inline ssize_t pci_bus_show_cpulistaffinity(struct device *dev, struct device_attribute *attr, char *buf) { @@ -165,7 +165,7 @@ int __pci_read_base(struct pci_dev *dev, u32 l, sz, mask; u16 orig_cmd; - mask = type ? PCI_ROM_ADDRESS_MASK : ~0; + mask = type ? (u32)PCI_ROM_ADDRESS_MASK : ~0; if (!dev->mmio_always_on) { pci_read_config_word(dev, PCI_COMMAND, &orig_cmd); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/pcmcia/ti113x.h linux-2.6.36.4-pax/drivers/pcmcia/ti113x.h --- linux-2.6.36.4/drivers/pcmcia/ti113x.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/pcmcia/ti113x.h 2010-10-27 22:58:08.000000000 +0200 @@ -936,7 +936,7 @@ static struct pci_device_id ene_tune_tbl DEVID(PCI_VENDOR_ID_MOTOROLA, 0x3410, 0xECC0, PCI_ANY_ID, ENE_TEST_C9_TLTENABLE | ENE_TEST_C9_PFENABLE, ENE_TEST_C9_TLTENABLE), - {} + { 0, 0, 0, 0, 0, 0, 0 } }; static void ene_tune_bridge(struct pcmcia_socket *sock, struct pci_bus *bus) diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/pcmcia/yenta_socket.c linux-2.6.36.4-pax/drivers/pcmcia/yenta_socket.c --- linux-2.6.36.4/drivers/pcmcia/yenta_socket.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/pcmcia/yenta_socket.c 2010-10-27 22:58:08.000000000 +0200 @@ -1427,7 +1427,7 @@ static struct pci_device_id yenta_table[ /* match any cardbus bridge */ CB_ID(PCI_ANY_ID, PCI_ANY_ID, DEFAULT), - { /* all zeroes */ } + { 0, 0, 0, 0, 0, 0, 0 } }; MODULE_DEVICE_TABLE(pci, yenta_table); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/platform/x86/acer-wmi.c linux-2.6.36.4-pax/drivers/platform/x86/acer-wmi.c --- linux-2.6.36.4/drivers/platform/x86/acer-wmi.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/platform/x86/acer-wmi.c 2010-10-27 22:58:44.000000000 +0200 @@ -915,7 +915,7 @@ static int update_bl_status(struct backl return 0; } -static struct backlight_ops acer_bl_ops = { +static const struct backlight_ops acer_bl_ops = { .get_brightness = read_brightness, .update_status = update_bl_status, }; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/platform/x86/asus-laptop.c linux-2.6.36.4-pax/drivers/platform/x86/asus-laptop.c --- linux-2.6.36.4/drivers/platform/x86/asus-laptop.c 2010-12-14 21:09:00.000000000 +0100 +++ linux-2.6.36.4-pax/drivers/platform/x86/asus-laptop.c 2010-12-14 21:09:08.000000000 +0100 @@ -224,7 +224,6 @@ struct asus_laptop { struct asus_led gled; struct asus_led kled; struct workqueue_struct *led_workqueue; - int wireless_status; bool have_rsts; int lcd_state; @@ -621,7 +620,7 @@ static int update_bl_status(struct backl return asus_lcd_set(asus, value); } -static struct backlight_ops asusbl_ops = { +static const struct backlight_ops asusbl_ops = { .get_brightness = asus_read_brightness, .update_status = update_bl_status, }; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/platform/x86/asus_acpi.c linux-2.6.36.4-pax/drivers/platform/x86/asus_acpi.c --- linux-2.6.36.4/drivers/platform/x86/asus_acpi.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/platform/x86/asus_acpi.c 2010-10-27 22:58:44.000000000 +0200 @@ -1467,7 +1467,7 @@ static int asus_hotk_remove(struct acpi_ return 0; } -static struct backlight_ops asus_backlight_data = { +static const struct backlight_ops asus_backlight_data = { .get_brightness = read_brightness, .update_status = set_brightness_status, }; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/platform/x86/dell-laptop.c linux-2.6.36.4-pax/drivers/platform/x86/dell-laptop.c --- linux-2.6.36.4/drivers/platform/x86/dell-laptop.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/platform/x86/dell-laptop.c 2010-10-27 22:58:44.000000000 +0200 @@ -475,7 +475,7 @@ out: return buffer->output[1]; } -static struct backlight_ops dell_ops = { +static const struct backlight_ops dell_ops = { .get_brightness = dell_get_intensity, .update_status = dell_send_intensity, }; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/platform/x86/eeepc-laptop.c linux-2.6.36.4-pax/drivers/platform/x86/eeepc-laptop.c --- linux-2.6.36.4/drivers/platform/x86/eeepc-laptop.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/platform/x86/eeepc-laptop.c 2010-10-27 22:58:44.000000000 +0200 @@ -1114,7 +1114,7 @@ static int update_bl_status(struct backl return set_brightness(bd, bd->props.brightness); } -static struct backlight_ops eeepcbl_ops = { +static const struct backlight_ops eeepcbl_ops = { .get_brightness = read_brightness, .update_status = update_bl_status, }; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/platform/x86/fujitsu-laptop.c linux-2.6.36.4-pax/drivers/platform/x86/fujitsu-laptop.c --- linux-2.6.36.4/drivers/platform/x86/fujitsu-laptop.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/platform/x86/fujitsu-laptop.c 2010-10-27 22:58:44.000000000 +0200 @@ -437,7 +437,7 @@ static int bl_update_status(struct backl return ret; } -static struct backlight_ops fujitsubl_ops = { +static const struct backlight_ops fujitsubl_ops = { .get_brightness = bl_get_brightness, .update_status = bl_update_status, }; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/platform/x86/sony-laptop.c linux-2.6.36.4-pax/drivers/platform/x86/sony-laptop.c --- linux-2.6.36.4/drivers/platform/x86/sony-laptop.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/platform/x86/sony-laptop.c 2010-10-27 22:58:44.000000000 +0200 @@ -856,7 +856,7 @@ static int sony_backlight_get_brightness } static struct backlight_device *sony_backlight_device; -static struct backlight_ops sony_backlight_ops = { +static const struct backlight_ops sony_backlight_ops = { .update_status = sony_backlight_update_status, .get_brightness = sony_backlight_get_brightness, }; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/platform/x86/thinkpad_acpi.c linux-2.6.36.4-pax/drivers/platform/x86/thinkpad_acpi.c --- linux-2.6.36.4/drivers/platform/x86/thinkpad_acpi.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/platform/x86/thinkpad_acpi.c 2010-10-27 22:58:44.000000000 +0200 @@ -6109,7 +6109,7 @@ static void tpacpi_brightness_notify_cha BACKLIGHT_UPDATE_HOTKEY); } -static struct backlight_ops ibm_backlight_data = { +static const struct backlight_ops ibm_backlight_data = { .get_brightness = brightness_get, .update_status = brightness_update_status, }; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/platform/x86/toshiba_acpi.c linux-2.6.36.4-pax/drivers/platform/x86/toshiba_acpi.c --- linux-2.6.36.4/drivers/platform/x86/toshiba_acpi.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/platform/x86/toshiba_acpi.c 2010-10-27 22:58:44.000000000 +0200 @@ -847,7 +847,7 @@ static void remove_toshiba_proc_entries( remove_proc_entry("version", toshiba_proc_dir); } -static struct backlight_ops toshiba_backlight_data = { +static const struct backlight_ops toshiba_backlight_data = { .get_brightness = get_lcd, .update_status = set_lcd_status, }; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/pnp/pnpbios/bioscalls.c linux-2.6.36.4-pax/drivers/pnp/pnpbios/bioscalls.c --- linux-2.6.36.4/drivers/pnp/pnpbios/bioscalls.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/pnp/pnpbios/bioscalls.c 2010-10-27 22:58:08.000000000 +0200 @@ -59,7 +59,7 @@ do { \ set_desc_limit(&gdt[(selname) >> 3], (size) - 1); \ } while(0) -static struct desc_struct bad_bios_desc = GDT_ENTRY_INIT(0x4092, +static const struct desc_struct bad_bios_desc = GDT_ENTRY_INIT(0x4093, (unsigned long)__va(0x400UL), PAGE_SIZE - 0x400 - 1); /* @@ -96,7 +96,10 @@ static inline u16 call_pnp_bios(u16 func cpu = get_cpu(); save_desc_40 = get_cpu_gdt_table(cpu)[0x40 / 8]; + + pax_open_kernel(); get_cpu_gdt_table(cpu)[0x40 / 8] = bad_bios_desc; + pax_close_kernel(); /* On some boxes IRQ's during PnP BIOS calls are deadly. */ spin_lock_irqsave(&pnp_bios_lock, flags); @@ -134,7 +137,10 @@ static inline u16 call_pnp_bios(u16 func :"memory"); spin_unlock_irqrestore(&pnp_bios_lock, flags); + pax_open_kernel(); get_cpu_gdt_table(cpu)[0x40 / 8] = save_desc_40; + pax_close_kernel(); + put_cpu(); /* If we get here and this is set then the PnP BIOS faulted on us. */ @@ -468,7 +474,7 @@ int pnp_bios_read_escd(char *data, u32 n return status; } -void pnpbios_calls_init(union pnp_bios_install_struct *header) +void __init pnpbios_calls_init(union pnp_bios_install_struct *header) { int i; @@ -476,6 +482,8 @@ void pnpbios_calls_init(union pnp_bios_i pnp_bios_callpoint.offset = header->fields.pm16offset; pnp_bios_callpoint.segment = PNP_CS16; + pax_open_kernel(); + for_each_possible_cpu(i) { struct desc_struct *gdt = get_cpu_gdt_table(i); if (!gdt) @@ -487,4 +495,6 @@ void pnpbios_calls_init(union pnp_bios_i set_desc_base(&gdt[GDT_ENTRY_PNPBIOS_DS], (unsigned long)__va(header->fields.pm16dseg)); } + + pax_close_kernel(); } diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/pnp/quirks.c linux-2.6.36.4-pax/drivers/pnp/quirks.c --- linux-2.6.36.4/drivers/pnp/quirks.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/pnp/quirks.c 2010-10-27 22:58:08.000000000 +0200 @@ -322,7 +322,7 @@ static struct pnp_fixup pnp_fixups[] = { /* PnP resources that might overlap PCI BARs */ {"PNP0c01", quirk_system_pci_resources}, {"PNP0c02", quirk_system_pci_resources}, - {""} + {"", NULL} }; void pnp_fixup_device(struct pnp_dev *dev) diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/pnp/resource.c linux-2.6.36.4-pax/drivers/pnp/resource.c --- linux-2.6.36.4/drivers/pnp/resource.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/pnp/resource.c 2010-10-27 22:58:08.000000000 +0200 @@ -360,7 +360,7 @@ int pnp_check_irq(struct pnp_dev *dev, s return 1; /* check if the resource is valid */ - if (*irq < 0 || *irq > 15) + if (*irq > 15) return 0; /* check if the resource is reserved */ @@ -424,7 +424,7 @@ int pnp_check_dma(struct pnp_dev *dev, s return 1; /* check if the resource is valid */ - if (*dma < 0 || *dma == 4 || *dma > 7) + if (*dma == 4 || *dma > 7) return 0; /* check if the resource is reserved */ diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/s390/cio/qdio_debug.c linux-2.6.36.4-pax/drivers/s390/cio/qdio_debug.c --- linux-2.6.36.4/drivers/s390/cio/qdio_debug.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/s390/cio/qdio_debug.c 2010-10-27 22:58:44.000000000 +0200 @@ -233,7 +233,7 @@ static int qperf_seq_open(struct inode * filp->f_path.dentry->d_inode->i_private); } -static struct file_operations debugfs_perf_fops = { +static const struct file_operations debugfs_perf_fops = { .owner = THIS_MODULE, .open = qperf_seq_open, .read = seq_read, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/scsi/ipr.c linux-2.6.36.4-pax/drivers/scsi/ipr.c --- linux-2.6.36.4/drivers/scsi/ipr.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/scsi/ipr.c 2010-10-27 22:58:44.000000000 +0200 @@ -6156,7 +6156,7 @@ static bool ipr_qc_fill_rtf(struct ata_q return true; } -static struct ata_port_operations ipr_sata_ops = { +static const struct ata_port_operations ipr_sata_ops = { .phy_reset = ipr_ata_phy_reset, .hardreset = ipr_sata_reset, .post_internal_cmd = ipr_ata_post_internal, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/scsi/libfc/fc_exch.c linux-2.6.36.4-pax/drivers/scsi/libfc/fc_exch.c --- linux-2.6.36.4/drivers/scsi/libfc/fc_exch.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/scsi/libfc/fc_exch.c 2010-10-27 22:58:08.000000000 +0200 @@ -100,12 +100,12 @@ struct fc_exch_mgr { * all together if not used XXX */ struct { - atomic_t no_free_exch; - atomic_t no_free_exch_xid; - atomic_t xid_not_found; - atomic_t xid_busy; - atomic_t seq_not_found; - atomic_t non_bls_resp; + atomic_unchecked_t no_free_exch; + atomic_unchecked_t no_free_exch_xid; + atomic_unchecked_t xid_not_found; + atomic_unchecked_t xid_busy; + atomic_unchecked_t seq_not_found; + atomic_unchecked_t non_bls_resp; } stats; }; #define fc_seq_exch(sp) container_of(sp, struct fc_exch, seq) @@ -670,7 +670,7 @@ static struct fc_exch *fc_exch_em_alloc( /* allocate memory for exchange */ ep = mempool_alloc(mp->ep_pool, GFP_ATOMIC); if (!ep) { - atomic_inc(&mp->stats.no_free_exch); + atomic_inc_unchecked(&mp->stats.no_free_exch); goto out; } memset(ep, 0, sizeof(*ep)); @@ -718,7 +718,7 @@ out: return ep; err: spin_unlock_bh(&pool->lock); - atomic_inc(&mp->stats.no_free_exch_xid); + atomic_inc_unchecked(&mp->stats.no_free_exch_xid); mempool_free(ep, mp->ep_pool); return NULL; } @@ -863,7 +863,7 @@ static enum fc_pf_rjt_reason fc_seq_look xid = ntohs(fh->fh_ox_id); /* we originated exch */ ep = fc_exch_find(mp, xid); if (!ep) { - atomic_inc(&mp->stats.xid_not_found); + atomic_inc_unchecked(&mp->stats.xid_not_found); reject = FC_RJT_OX_ID; goto out; } @@ -893,7 +893,7 @@ static enum fc_pf_rjt_reason fc_seq_look ep = fc_exch_find(mp, xid); if ((f_ctl & FC_FC_FIRST_SEQ) && fc_sof_is_init(fr_sof(fp))) { if (ep) { - atomic_inc(&mp->stats.xid_busy); + atomic_inc_unchecked(&mp->stats.xid_busy); reject = FC_RJT_RX_ID; goto rel; } @@ -904,7 +904,7 @@ static enum fc_pf_rjt_reason fc_seq_look } xid = ep->xid; /* get our XID */ } else if (!ep) { - atomic_inc(&mp->stats.xid_not_found); + atomic_inc_unchecked(&mp->stats.xid_not_found); reject = FC_RJT_RX_ID; /* XID not found */ goto out; } @@ -921,7 +921,7 @@ static enum fc_pf_rjt_reason fc_seq_look } else { sp = &ep->seq; if (sp->id != fh->fh_seq_id) { - atomic_inc(&mp->stats.seq_not_found); + atomic_inc_unchecked(&mp->stats.seq_not_found); reject = FC_RJT_SEQ_ID; /* sequence/exch should exist */ goto rel; } @@ -1338,22 +1338,22 @@ static void fc_exch_recv_seq_resp(struct ep = fc_exch_find(mp, ntohs(fh->fh_ox_id)); if (!ep) { - atomic_inc(&mp->stats.xid_not_found); + atomic_inc_unchecked(&mp->stats.xid_not_found); goto out; } if (ep->esb_stat & ESB_ST_COMPLETE) { - atomic_inc(&mp->stats.xid_not_found); + atomic_inc_unchecked(&mp->stats.xid_not_found); goto out; } if (ep->rxid == FC_XID_UNKNOWN) ep->rxid = ntohs(fh->fh_rx_id); if (ep->sid != 0 && ep->sid != ntoh24(fh->fh_d_id)) { - atomic_inc(&mp->stats.xid_not_found); + atomic_inc_unchecked(&mp->stats.xid_not_found); goto rel; } if (ep->did != ntoh24(fh->fh_s_id) && ep->did != FC_FID_FLOGI) { - atomic_inc(&mp->stats.xid_not_found); + atomic_inc_unchecked(&mp->stats.xid_not_found); goto rel; } sof = fr_sof(fp); @@ -1362,7 +1362,7 @@ static void fc_exch_recv_seq_resp(struct sp->ssb_stat |= SSB_ST_RESP; sp->id = fh->fh_seq_id; } else if (sp->id != fh->fh_seq_id) { - atomic_inc(&mp->stats.seq_not_found); + atomic_inc_unchecked(&mp->stats.seq_not_found); goto rel; } @@ -1425,9 +1425,9 @@ static void fc_exch_recv_resp(struct fc_ sp = fc_seq_lookup_orig(mp, fp); /* doesn't hold sequence */ if (!sp) - atomic_inc(&mp->stats.xid_not_found); + atomic_inc_unchecked(&mp->stats.xid_not_found); else - atomic_inc(&mp->stats.non_bls_resp); + atomic_inc_unchecked(&mp->stats.non_bls_resp); fc_frame_free(fp); } diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/scsi/libsas/sas_ata.c linux-2.6.36.4-pax/drivers/scsi/libsas/sas_ata.c --- linux-2.6.36.4/drivers/scsi/libsas/sas_ata.c 2010-12-14 21:09:00.000000000 +0100 +++ linux-2.6.36.4-pax/drivers/scsi/libsas/sas_ata.c 2011-01-17 03:22:11.000000000 +0100 @@ -344,10 +344,10 @@ static int sas_ata_scr_read(struct ata_l } } -static struct ata_port_operations sas_sata_ops = { +static const struct ata_port_operations sas_sata_ops = { .phy_reset = sas_ata_phy_reset, .post_internal_cmd = sas_ata_post_internal, - .qc_defer = ata_std_qc_defer, + .qc_defer = ata_std_qc_defer, .qc_prep = ata_noop_qc_prep, .qc_issue = sas_ata_qc_issue, .qc_fill_rtf = sas_ata_qc_fill_rtf, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/scsi/mpt2sas/mpt2sas_debug.h linux-2.6.36.4-pax/drivers/scsi/mpt2sas/mpt2sas_debug.h --- linux-2.6.36.4/drivers/scsi/mpt2sas/mpt2sas_debug.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/scsi/mpt2sas/mpt2sas_debug.h 2010-10-27 22:58:08.000000000 +0200 @@ -79,7 +79,7 @@ CMD; \ } #else -#define MPT_CHECK_LOGGING(IOC, CMD, BITS) +#define MPT_CHECK_LOGGING(IOC, CMD, BITS) do {} while (0) #endif /* CONFIG_SCSI_MPT2SAS_LOGGING */ diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/scsi/qla2xxx/qla_os.c linux-2.6.36.4-pax/drivers/scsi/qla2xxx/qla_os.c --- linux-2.6.36.4/drivers/scsi/qla2xxx/qla_os.c 2011-01-12 15:14:10.000000000 +0100 +++ linux-2.6.36.4-pax/drivers/scsi/qla2xxx/qla_os.c 2011-01-12 15:14:27.000000000 +0100 @@ -3952,7 +3952,7 @@ static struct pci_driver qla2xxx_pci_dri .err_handler = &qla2xxx_err_handler, }; -static struct file_operations apidev_fops = { +static const struct file_operations apidev_fops = { .owner = THIS_MODULE, }; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/scsi/scsi_logging.h linux-2.6.36.4-pax/drivers/scsi/scsi_logging.h --- linux-2.6.36.4/drivers/scsi/scsi_logging.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/scsi/scsi_logging.h 2010-10-27 22:58:08.000000000 +0200 @@ -51,7 +51,7 @@ do { \ } while (0); \ } while (0) #else -#define SCSI_CHECK_LOGGING(SHIFT, BITS, LEVEL, CMD) +#define SCSI_CHECK_LOGGING(SHIFT, BITS, LEVEL, CMD) do {} while (0) #endif /* CONFIG_SCSI_LOGGING */ /* diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/scsi/sg.c linux-2.6.36.4-pax/drivers/scsi/sg.c --- linux-2.6.36.4/drivers/scsi/sg.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/scsi/sg.c 2010-10-27 22:58:08.000000000 +0200 @@ -2307,7 +2307,7 @@ struct sg_proc_leaf { const struct file_operations * fops; }; -static struct sg_proc_leaf sg_proc_leaf_arr[] = { +static const struct sg_proc_leaf sg_proc_leaf_arr[] = { {"allow_dio", &adio_fops}, {"debug", &debug_fops}, {"def_reserved_size", &dressz_fops}, @@ -2322,7 +2322,7 @@ sg_proc_init(void) { int k, mask; int num_leaves = ARRAY_SIZE(sg_proc_leaf_arr); - struct sg_proc_leaf * leaf; + const struct sg_proc_leaf * leaf; sg_proc_sgp = proc_mkdir(sg_proc_sg_dirname, NULL); if (!sg_proc_sgp) diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/serial/8250_pci.c linux-2.6.36.4-pax/drivers/serial/8250_pci.c --- linux-2.6.36.4/drivers/serial/8250_pci.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/serial/8250_pci.c 2010-10-27 22:58:08.000000000 +0200 @@ -3777,7 +3777,7 @@ static struct pci_device_id serial_pci_t PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_COMMUNICATION_MULTISERIAL << 8, 0xffff00, pbn_default }, - { 0, } + { 0, 0, 0, 0, 0, 0, 0 } }; static struct pci_driver serial_pci_driver = { diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/serial/kgdboc.c linux-2.6.36.4-pax/drivers/serial/kgdboc.c --- linux-2.6.36.4/drivers/serial/kgdboc.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/serial/kgdboc.c 2010-10-27 22:58:44.000000000 +0200 @@ -21,7 +21,8 @@ #define MAX_CONFIG_LEN 40 -static struct kgdb_io kgdboc_io_ops; +/* cannot be const, see configure_kgdboc() */ +static struct kgdb_io kgdboc_io_ops; /* -1 = init not run yet, 0 = unconfigured, 1 = configured. */ static int configured = -1; @@ -233,6 +234,7 @@ static void kgdboc_post_exp_handler(void } } +/* cannot be const, see configure_kgdboc() */ static struct kgdb_io kgdboc_io_ops = { .name = "kgdboc", .read_char = kgdboc_get_char, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/staging/comedi/comedi_fops.c linux-2.6.36.4-pax/drivers/staging/comedi/comedi_fops.c --- linux-2.6.36.4/drivers/staging/comedi/comedi_fops.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/staging/comedi/comedi_fops.c 2010-10-27 22:58:08.000000000 +0200 @@ -1425,7 +1425,7 @@ static void comedi_unmap(struct vm_area_ mutex_unlock(&dev->mutex); } -static struct vm_operations_struct comedi_vm_ops = { +static const struct vm_operations_struct comedi_vm_ops = { .close = comedi_unmap, }; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/staging/dream/pmem.c linux-2.6.36.4-pax/drivers/staging/dream/pmem.c --- linux-2.6.36.4/drivers/staging/dream/pmem.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/staging/dream/pmem.c 2010-10-27 22:58:44.000000000 +0200 @@ -1201,7 +1201,7 @@ static ssize_t debug_read(struct file *f return simple_read_from_buffer(buf, count, ppos, buffer, n); } -static struct file_operations debug_fops = { +static const struct file_operations debug_fops = { .read = debug_read, .open = debug_open, }; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/staging/dream/qdsp5/adsp_driver.c linux-2.6.36.4-pax/drivers/staging/dream/qdsp5/adsp_driver.c --- linux-2.6.36.4/drivers/staging/dream/qdsp5/adsp_driver.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/staging/dream/qdsp5/adsp_driver.c 2010-10-27 22:58:44.000000000 +0200 @@ -577,7 +577,7 @@ static struct adsp_device *inode_to_devi static dev_t adsp_devno; static struct class *adsp_class; -static struct file_operations adsp_fops = { +static const struct file_operations adsp_fops = { .owner = THIS_MODULE, .open = adsp_open, .unlocked_ioctl = adsp_ioctl, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/staging/dream/qdsp5/audio_aac.c linux-2.6.36.4-pax/drivers/staging/dream/qdsp5/audio_aac.c --- linux-2.6.36.4/drivers/staging/dream/qdsp5/audio_aac.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/staging/dream/qdsp5/audio_aac.c 2010-10-27 22:58:44.000000000 +0200 @@ -1023,7 +1023,7 @@ done: return rc; } -static struct file_operations audio_aac_fops = { +static const struct file_operations audio_aac_fops = { .owner = THIS_MODULE, .open = audio_open, .release = audio_release, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/staging/dream/qdsp5/audio_amrnb.c linux-2.6.36.4-pax/drivers/staging/dream/qdsp5/audio_amrnb.c --- linux-2.6.36.4/drivers/staging/dream/qdsp5/audio_amrnb.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/staging/dream/qdsp5/audio_amrnb.c 2010-10-27 22:58:44.000000000 +0200 @@ -834,7 +834,7 @@ done: return rc; } -static struct file_operations audio_amrnb_fops = { +static const struct file_operations audio_amrnb_fops = { .owner = THIS_MODULE, .open = audamrnb_open, .release = audamrnb_release, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/staging/dream/qdsp5/audio_evrc.c linux-2.6.36.4-pax/drivers/staging/dream/qdsp5/audio_evrc.c --- linux-2.6.36.4/drivers/staging/dream/qdsp5/audio_evrc.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/staging/dream/qdsp5/audio_evrc.c 2010-10-27 22:58:44.000000000 +0200 @@ -806,7 +806,7 @@ dma_fail: return rc; } -static struct file_operations audio_evrc_fops = { +static const struct file_operations audio_evrc_fops = { .owner = THIS_MODULE, .open = audevrc_open, .release = audevrc_release, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/staging/dream/qdsp5/audio_in.c linux-2.6.36.4-pax/drivers/staging/dream/qdsp5/audio_in.c --- linux-2.6.36.4/drivers/staging/dream/qdsp5/audio_in.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/staging/dream/qdsp5/audio_in.c 2010-10-27 22:58:44.000000000 +0200 @@ -914,7 +914,7 @@ static int audpre_open(struct inode *ino return 0; } -static struct file_operations audio_fops = { +static const struct file_operations audio_fops = { .owner = THIS_MODULE, .open = audio_in_open, .release = audio_in_release, @@ -923,7 +923,7 @@ static struct file_operations audio_fops .unlocked_ioctl = audio_in_ioctl, }; -static struct file_operations audpre_fops = { +static const struct file_operations audpre_fops = { .owner = THIS_MODULE, .open = audpre_open, .unlocked_ioctl = audpre_ioctl, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/staging/dream/qdsp5/audio_mp3.c linux-2.6.36.4-pax/drivers/staging/dream/qdsp5/audio_mp3.c --- linux-2.6.36.4/drivers/staging/dream/qdsp5/audio_mp3.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/staging/dream/qdsp5/audio_mp3.c 2010-10-27 22:58:44.000000000 +0200 @@ -941,7 +941,7 @@ done: return rc; } -static struct file_operations audio_mp3_fops = { +static const struct file_operations audio_mp3_fops = { .owner = THIS_MODULE, .open = audio_open, .release = audio_release, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/staging/dream/qdsp5/audio_out.c linux-2.6.36.4-pax/drivers/staging/dream/qdsp5/audio_out.c --- linux-2.6.36.4/drivers/staging/dream/qdsp5/audio_out.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/staging/dream/qdsp5/audio_out.c 2010-10-27 22:58:44.000000000 +0200 @@ -800,7 +800,7 @@ static int audpp_open(struct inode *inod return 0; } -static struct file_operations audio_fops = { +static const struct file_operations audio_fops = { .owner = THIS_MODULE, .open = audio_open, .release = audio_release, @@ -809,7 +809,7 @@ static struct file_operations audio_fops .unlocked_ioctl = audio_ioctl, }; -static struct file_operations audpp_fops = { +static const struct file_operations audpp_fops = { .owner = THIS_MODULE, .open = audpp_open, .unlocked_ioctl = audpp_ioctl, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/staging/dream/qdsp5/audio_qcelp.c linux-2.6.36.4-pax/drivers/staging/dream/qdsp5/audio_qcelp.c --- linux-2.6.36.4/drivers/staging/dream/qdsp5/audio_qcelp.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/staging/dream/qdsp5/audio_qcelp.c 2010-10-27 22:58:44.000000000 +0200 @@ -817,7 +817,7 @@ err: return rc; } -static struct file_operations audio_qcelp_fops = { +static const struct file_operations audio_qcelp_fops = { .owner = THIS_MODULE, .open = audqcelp_open, .release = audqcelp_release, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/staging/dream/qdsp5/snd.c linux-2.6.36.4-pax/drivers/staging/dream/qdsp5/snd.c --- linux-2.6.36.4/drivers/staging/dream/qdsp5/snd.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/staging/dream/qdsp5/snd.c 2010-10-27 22:58:44.000000000 +0200 @@ -242,7 +242,7 @@ err: return rc; } -static struct file_operations snd_fops = { +static const struct file_operations snd_fops = { .owner = THIS_MODULE, .open = snd_open, .release = snd_release, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/staging/go7007/go7007-v4l2.c linux-2.6.36.4-pax/drivers/staging/go7007/go7007-v4l2.c --- linux-2.6.36.4/drivers/staging/go7007/go7007-v4l2.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/staging/go7007/go7007-v4l2.c 2010-10-27 22:58:08.000000000 +0200 @@ -1673,7 +1673,7 @@ static int go7007_vm_fault(struct vm_are return 0; } -static struct vm_operations_struct go7007_vm_ops = { +static const struct vm_operations_struct go7007_vm_ops = { .open = go7007_vm_open, .close = go7007_vm_close, .fault = go7007_vm_fault, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/staging/hv/hv.c linux-2.6.36.4-pax/drivers/staging/hv/hv.c --- linux-2.6.36.4/drivers/staging/hv/hv.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/staging/hv/hv.c 2010-10-27 22:58:08.000000000 +0200 @@ -162,7 +162,7 @@ static u64 HvDoHypercall(u64 Control, vo u64 outputAddress = (Output) ? virt_to_phys(Output) : 0; u32 outputAddressHi = outputAddress >> 32; u32 outputAddressLo = outputAddress & 0xFFFFFFFF; - volatile void *hypercallPage = gHvContext.HypercallPage; + volatile void *hypercallPage = ktva_ktla(gHvContext.HypercallPage); DPRINT_DBG(VMBUS, "Hypercall ", Control, Input, Output); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/staging/msm/msm_fb_bl.c linux-2.6.36.4-pax/drivers/staging/msm/msm_fb_bl.c --- linux-2.6.36.4/drivers/staging/msm/msm_fb_bl.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/staging/msm/msm_fb_bl.c 2010-10-27 22:58:44.000000000 +0200 @@ -42,7 +42,7 @@ static int msm_fb_bl_update_status(struc return 0; } -static struct backlight_ops msm_fb_bl_ops = { +static const struct backlight_ops msm_fb_bl_ops = { .get_brightness = msm_fb_bl_get_brightness, .update_status = msm_fb_bl_update_status, }; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/staging/phison/phison.c linux-2.6.36.4-pax/drivers/staging/phison/phison.c --- linux-2.6.36.4/drivers/staging/phison/phison.c 2010-12-14 21:09:00.000000000 +0100 +++ linux-2.6.36.4-pax/drivers/staging/phison/phison.c 2010-12-14 21:09:08.000000000 +0100 @@ -43,7 +43,7 @@ static struct scsi_host_template phison_ ATA_BMDMA_SHT(DRV_NAME), }; -static struct ata_port_operations phison_ops = { +static const struct ata_port_operations phison_ops = { .inherits = &ata_bmdma_port_ops, .prereset = phison_pre_reset, }; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/staging/pohmelfs/inode.c linux-2.6.36.4-pax/drivers/staging/pohmelfs/inode.c --- linux-2.6.36.4/drivers/staging/pohmelfs/inode.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/staging/pohmelfs/inode.c 2010-10-27 22:58:08.000000000 +0200 @@ -1852,7 +1852,7 @@ static int pohmelfs_fill_super(struct su mutex_init(&psb->mcache_lock); psb->mcache_root = RB_ROOT; psb->mcache_timeout = msecs_to_jiffies(5000); - atomic_long_set(&psb->mcache_gen, 0); + atomic_long_set_unchecked(&psb->mcache_gen, 0); psb->trans_max_pages = 100; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/staging/pohmelfs/mcache.c linux-2.6.36.4-pax/drivers/staging/pohmelfs/mcache.c --- linux-2.6.36.4/drivers/staging/pohmelfs/mcache.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/staging/pohmelfs/mcache.c 2010-10-27 22:58:08.000000000 +0200 @@ -121,7 +121,7 @@ struct pohmelfs_mcache *pohmelfs_mcache_ m->data = data; m->start = start; m->size = size; - m->gen = atomic_long_inc_return(&psb->mcache_gen); + m->gen = atomic_long_inc_return_unchecked(&psb->mcache_gen); mutex_lock(&psb->mcache_lock); err = pohmelfs_mcache_insert(psb, m); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/staging/pohmelfs/netfs.h linux-2.6.36.4-pax/drivers/staging/pohmelfs/netfs.h --- linux-2.6.36.4/drivers/staging/pohmelfs/netfs.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/staging/pohmelfs/netfs.h 2010-10-27 22:58:08.000000000 +0200 @@ -571,7 +571,7 @@ struct pohmelfs_config; struct pohmelfs_sb { struct rb_root mcache_root; struct mutex mcache_lock; - atomic_long_t mcache_gen; + atomic_long_unchecked_t mcache_gen; unsigned long mcache_timeout; unsigned int idx; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/staging/quickstart/quickstart.c linux-2.6.36.4-pax/drivers/staging/quickstart/quickstart.c --- linux-2.6.36.4/drivers/staging/quickstart/quickstart.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/staging/quickstart/quickstart.c 2011-02-24 15:24:02.000000000 +0100 @@ -398,15 +398,13 @@ static int __init quickstart_init_input( static int __init quickstart_init(void) { int ret; - acpi_status status = 0; /* ACPI Check */ if (acpi_disabled) return -ENODEV; /* ACPI driver register */ - status = acpi_bus_register_driver(&quickstart_acpi_driver); - if (status < 0) + if (acpi_bus_register_driver(&quickstart_acpi_driver) < 0) return -ENODEV; /* If existing bus with no devices */ diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/staging/rtl8192u/ieee80211/proc.c linux-2.6.36.4-pax/drivers/staging/rtl8192u/ieee80211/proc.c --- linux-2.6.36.4/drivers/staging/rtl8192u/ieee80211/proc.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/staging/rtl8192u/ieee80211/proc.c 2010-10-27 22:58:44.000000000 +0200 @@ -99,7 +99,7 @@ static int crypto_info_open(struct inode return seq_open(file, &crypto_seq_ops); } -static struct file_operations proc_crypto_ops = { +static const struct file_operations proc_crypto_ops = { .open = crypto_info_open, .read = seq_read, .llseek = seq_lseek, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/staging/samsung-laptop/samsung-laptop.c linux-2.6.36.4-pax/drivers/staging/samsung-laptop/samsung-laptop.c --- linux-2.6.36.4/drivers/staging/samsung-laptop/samsung-laptop.c 2010-12-16 12:42:52.000000000 +0100 +++ linux-2.6.36.4-pax/drivers/staging/samsung-laptop/samsung-laptop.c 2010-12-16 12:43:30.000000000 +0100 @@ -269,7 +269,7 @@ static int update_status(struct backligh return 0; } -static struct backlight_ops backlight_ops = { +static const struct backlight_ops backlight_ops = { .get_brightness = get_brightness, .update_status = update_status, }; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/staging/spectra/ffsport.c linux-2.6.36.4-pax/drivers/staging/spectra/ffsport.c --- linux-2.6.36.4/drivers/staging/spectra/ffsport.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/staging/spectra/ffsport.c 2010-10-27 22:58:44.000000000 +0200 @@ -602,7 +602,7 @@ int GLOB_SBD_unlocked_ioctl(struct block return ret; } -static struct block_device_operations GLOB_SBD_ops = { +static const struct block_device_operations GLOB_SBD_ops = { .owner = THIS_MODULE, .open = GLOB_SBD_open, .release = GLOB_SBD_release, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/staging/vme/devices/vme_user.c linux-2.6.36.4-pax/drivers/staging/vme/devices/vme_user.c --- linux-2.6.36.4/drivers/staging/vme/devices/vme_user.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/staging/vme/devices/vme_user.c 2010-10-27 22:58:44.000000000 +0200 @@ -137,7 +137,7 @@ static long vme_user_unlocked_ioctl(stru static int __init vme_user_probe(struct device *, int, int); static int __exit vme_user_remove(struct device *, int, int); -static struct file_operations vme_user_fops = { +static const struct file_operations vme_user_fops = { .open = vme_user_open, .release = vme_user_release, .read = vme_user_read, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/uio/uio.c linux-2.6.36.4-pax/drivers/uio/uio.c --- linux-2.6.36.4/drivers/uio/uio.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/uio/uio.c 2011-01-14 17:11:31.000000000 +0100 @@ -24,6 +24,7 @@ #include #include #include +#include #define UIO_MAX_DEVICES 255 @@ -34,7 +35,7 @@ struct uio_device { atomic_t event; struct fasync_struct *async_queue; wait_queue_head_t wait; - int vma_count; + local_t vma_count; struct uio_info *info; struct kobject *map_dir; struct kobject *portio_dir; @@ -625,13 +626,13 @@ static int uio_find_mem_index(struct vm_ static void uio_vma_open(struct vm_area_struct *vma) { struct uio_device *idev = vma->vm_private_data; - idev->vma_count++; + local_inc(&idev->vma_count); } static void uio_vma_close(struct vm_area_struct *vma) { struct uio_device *idev = vma->vm_private_data; - idev->vma_count--; + local_dec(&idev->vma_count); } static int uio_vma_fault(struct vm_area_struct *vma, struct vm_fault *vmf) diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/usb/atm/cxacru.c linux-2.6.36.4-pax/drivers/usb/atm/cxacru.c --- linux-2.6.36.4/drivers/usb/atm/cxacru.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/usb/atm/cxacru.c 2010-10-27 22:58:08.000000000 +0200 @@ -473,7 +473,7 @@ static ssize_t cxacru_sysfs_store_adsl_c ret = sscanf(buf + pos, "%x=%x%n", &index, &value, &tmp); if (ret < 2) return -EINVAL; - if (index < 0 || index > 0x7f) + if (index > 0x7f) return -EINVAL; pos += tmp; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/usb/atm/usbatm.c linux-2.6.36.4-pax/drivers/usb/atm/usbatm.c --- linux-2.6.36.4/drivers/usb/atm/usbatm.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/usb/atm/usbatm.c 2010-10-27 22:58:08.000000000 +0200 @@ -332,7 +332,7 @@ static void usbatm_extract_one_cell(stru if (printk_ratelimit()) atm_warn(instance, "%s: OAM not supported (vpi %d, vci %d)!\n", __func__, vpi, vci); - atomic_inc(&vcc->stats->rx_err); + atomic_inc_unchecked(&vcc->stats->rx_err); return; } @@ -360,7 +360,7 @@ static void usbatm_extract_one_cell(stru if (length > ATM_MAX_AAL5_PDU) { atm_rldbg(instance, "%s: bogus length %u (vcc: 0x%p)!\n", __func__, length, vcc); - atomic_inc(&vcc->stats->rx_err); + atomic_inc_unchecked(&vcc->stats->rx_err); goto out; } @@ -369,14 +369,14 @@ static void usbatm_extract_one_cell(stru if (sarb->len < pdu_length) { atm_rldbg(instance, "%s: bogus pdu_length %u (sarb->len: %u, vcc: 0x%p)!\n", __func__, pdu_length, sarb->len, vcc); - atomic_inc(&vcc->stats->rx_err); + atomic_inc_unchecked(&vcc->stats->rx_err); goto out; } if (crc32_be(~0, skb_tail_pointer(sarb) - pdu_length, pdu_length) != 0xc704dd7b) { atm_rldbg(instance, "%s: packet failed crc check (vcc: 0x%p)!\n", __func__, vcc); - atomic_inc(&vcc->stats->rx_err); + atomic_inc_unchecked(&vcc->stats->rx_err); goto out; } @@ -386,7 +386,7 @@ static void usbatm_extract_one_cell(stru if (printk_ratelimit()) atm_err(instance, "%s: no memory for skb (length: %u)!\n", __func__, length); - atomic_inc(&vcc->stats->rx_drop); + atomic_inc_unchecked(&vcc->stats->rx_drop); goto out; } @@ -411,7 +411,7 @@ static void usbatm_extract_one_cell(stru vcc->push(vcc, skb); - atomic_inc(&vcc->stats->rx); + atomic_inc_unchecked(&vcc->stats->rx); out: skb_trim(sarb, 0); } @@ -614,7 +614,7 @@ static void usbatm_tx_process(unsigned l struct atm_vcc *vcc = UDSL_SKB(skb)->atm.vcc; usbatm_pop(vcc, skb); - atomic_inc(&vcc->stats->tx); + atomic_inc_unchecked(&vcc->stats->tx); skb = skb_dequeue(&instance->sndqueue); } @@ -773,11 +773,11 @@ static int usbatm_atm_proc_read(struct a if (!left--) return sprintf(page, "AAL5: tx %d ( %d err ), rx %d ( %d err, %d drop )\n", - atomic_read(&atm_dev->stats.aal5.tx), - atomic_read(&atm_dev->stats.aal5.tx_err), - atomic_read(&atm_dev->stats.aal5.rx), - atomic_read(&atm_dev->stats.aal5.rx_err), - atomic_read(&atm_dev->stats.aal5.rx_drop)); + atomic_read_unchecked(&atm_dev->stats.aal5.tx), + atomic_read_unchecked(&atm_dev->stats.aal5.tx_err), + atomic_read_unchecked(&atm_dev->stats.aal5.rx), + atomic_read_unchecked(&atm_dev->stats.aal5.rx_err), + atomic_read_unchecked(&atm_dev->stats.aal5.rx_drop)); if (!left--) { if (instance->disconnected) diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/usb/class/cdc-acm.c linux-2.6.36.4-pax/drivers/usb/class/cdc-acm.c --- linux-2.6.36.4/drivers/usb/class/cdc-acm.c 2011-02-24 20:16:35.000000000 +0100 +++ linux-2.6.36.4-pax/drivers/usb/class/cdc-acm.c 2011-02-24 20:27:39.000000000 +0100 @@ -1635,7 +1635,7 @@ static const struct usb_device_id acm_id { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, USB_CDC_ACM_PROTO_AT_CDMA) }, - { } + { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 } }; MODULE_DEVICE_TABLE(usb, acm_ids); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/usb/class/cdc-wdm.c linux-2.6.36.4-pax/drivers/usb/class/cdc-wdm.c --- linux-2.6.36.4/drivers/usb/class/cdc-wdm.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/usb/class/cdc-wdm.c 2010-10-27 22:58:08.000000000 +0200 @@ -342,7 +342,7 @@ static ssize_t wdm_write goto outnp; } - if (!file->f_flags && O_NONBLOCK) + if (!(file->f_flags & O_NONBLOCK)) r = wait_event_interruptible(desc->wait, !test_bit(WDM_IN_USE, &desc->flags)); else diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/usb/class/usblp.c linux-2.6.36.4-pax/drivers/usb/class/usblp.c --- linux-2.6.36.4/drivers/usb/class/usblp.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/usb/class/usblp.c 2010-10-27 22:58:08.000000000 +0200 @@ -227,7 +227,7 @@ static const struct quirk_printer_struct { 0x0482, 0x0010, USBLP_QUIRK_BIDIR }, /* Kyocera Mita FS 820, by zut */ { 0x04f9, 0x000d, USBLP_QUIRK_BIDIR }, /* Brother Industries, Ltd HL-1440 Laser Printer */ { 0x04b8, 0x0202, USBLP_QUIRK_BAD_CLASS }, /* Seiko Epson Receipt Printer M129C */ - { 0, 0 } + { 0, 0, 0 } }; static int usblp_wwait(struct usblp *usblp, int nonblock); @@ -1397,7 +1397,7 @@ static const struct usb_device_id usblp_ { USB_INTERFACE_INFO(7, 1, 2) }, { USB_INTERFACE_INFO(7, 1, 3) }, { USB_DEVICE(0x04b8, 0x0202) }, /* Seiko Epson Receipt Printer M129C */ - { } /* Terminating entry */ + { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 } /* Terminating entry */ }; MODULE_DEVICE_TABLE(usb, usblp_ids); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/usb/core/hcd.c linux-2.6.36.4-pax/drivers/usb/core/hcd.c --- linux-2.6.36.4/drivers/usb/core/hcd.c 2011-02-24 20:16:36.000000000 +0100 +++ linux-2.6.36.4-pax/drivers/usb/core/hcd.c 2011-02-24 20:27:39.000000000 +0100 @@ -2420,7 +2420,7 @@ EXPORT_SYMBOL_GPL(usb_hcd_platform_shutd #if defined(CONFIG_USB_MON) || defined(CONFIG_USB_MON_MODULE) -struct usb_mon_operations *mon_ops; +const struct usb_mon_operations *mon_ops; /* * The registration is unlocked. @@ -2430,7 +2430,7 @@ struct usb_mon_operations *mon_ops; * symbols from usbcore, usbcore gets referenced and cannot be unloaded first. */ -int usb_mon_register (struct usb_mon_operations *ops) +int usb_mon_register (const struct usb_mon_operations *ops) { if (mon_ops) diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/usb/core/hub.c linux-2.6.36.4-pax/drivers/usb/core/hub.c --- linux-2.6.36.4/drivers/usb/core/hub.c 2011-02-24 20:16:20.000000000 +0100 +++ linux-2.6.36.4-pax/drivers/usb/core/hub.c 2011-02-24 20:27:38.000000000 +0100 @@ -3485,7 +3485,7 @@ static const struct usb_device_id hub_id .bDeviceClass = USB_CLASS_HUB}, { .match_flags = USB_DEVICE_ID_MATCH_INT_CLASS, .bInterfaceClass = USB_CLASS_HUB}, - { } /* Terminating entry */ + { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 } /* Terminating entry */ }; MODULE_DEVICE_TABLE (usb, hub_id_table); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/usb/core/message.c linux-2.6.36.4-pax/drivers/usb/core/message.c --- linux-2.6.36.4/drivers/usb/core/message.c 2010-12-14 21:09:00.000000000 +0100 +++ linux-2.6.36.4-pax/drivers/usb/core/message.c 2010-12-14 21:09:08.000000000 +0100 @@ -869,8 +869,8 @@ char *usb_cache_string(struct usb_device buf = kmalloc(MAX_USB_STRING_SIZE, GFP_NOIO); if (buf) { len = usb_string(udev, index, buf, MAX_USB_STRING_SIZE); - if (len > 0) { - smallbuf = kmalloc(++len, GFP_NOIO); + if (len++ > 0) { + smallbuf = kmalloc(len, GFP_NOIO); if (!smallbuf) return buf; memcpy(smallbuf, buf, len); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/usb/early/ehci-dbgp.c linux-2.6.36.4-pax/drivers/usb/early/ehci-dbgp.c --- linux-2.6.36.4/drivers/usb/early/ehci-dbgp.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/usb/early/ehci-dbgp.c 2010-10-27 22:58:44.000000000 +0200 @@ -96,6 +96,7 @@ static inline u32 dbgp_len_update(u32 x, } #ifdef CONFIG_KGDB +/* cannot be const, see kgdbdbgp_parse_config */ static struct kgdb_io kgdbdbgp_io_ops; #define dbgp_kgdb_mode (dbg_io_ops == &kgdbdbgp_io_ops) #else @@ -1026,6 +1027,7 @@ static void kgdbdbgp_write_char(u8 chr) early_dbgp_write(NULL, &chr, 1); } +/* cannot be const, see kgdbdbgp_parse_config() */ static struct kgdb_io kgdbdbgp_io_ops = { .name = "kgdbdbgp", .read_char = kgdbdbgp_read_char, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/usb/host/ehci-pci.c linux-2.6.36.4-pax/drivers/usb/host/ehci-pci.c --- linux-2.6.36.4/drivers/usb/host/ehci-pci.c 2011-02-24 20:16:20.000000000 +0100 +++ linux-2.6.36.4-pax/drivers/usb/host/ehci-pci.c 2011-02-24 20:27:38.000000000 +0100 @@ -496,7 +496,7 @@ static const struct pci_device_id pci_id PCI_DEVICE_CLASS(PCI_CLASS_SERIAL_USB_EHCI, ~0), .driver_data = (unsigned long) &ehci_pci_hc_driver, }, - { /* end: all zeroes */ } + { 0, 0, 0, 0, 0, 0, 0 } }; MODULE_DEVICE_TABLE(pci, pci_ids); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/usb/host/uhci-hcd.c linux-2.6.36.4-pax/drivers/usb/host/uhci-hcd.c --- linux-2.6.36.4/drivers/usb/host/uhci-hcd.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/usb/host/uhci-hcd.c 2010-10-27 22:58:08.000000000 +0200 @@ -948,7 +948,7 @@ static const struct pci_device_id uhci_p /* handle any USB UHCI controller */ PCI_DEVICE_CLASS(PCI_CLASS_SERIAL_USB_UHCI, ~0), .driver_data = (unsigned long) &uhci_driver, - }, { /* end: all zeroes */ } + }, { 0, 0, 0, 0, 0, 0, 0 } }; MODULE_DEVICE_TABLE(pci, uhci_pci_ids); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/usb/mon/mon_main.c linux-2.6.36.4-pax/drivers/usb/mon/mon_main.c --- linux-2.6.36.4/drivers/usb/mon/mon_main.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/usb/mon/mon_main.c 2010-10-27 22:58:44.000000000 +0200 @@ -240,7 +240,7 @@ static struct notifier_block mon_nb = { /* * Ops */ -static struct usb_mon_operations mon_ops_0 = { +static const struct usb_mon_operations mon_ops_0 = { .urb_submit = mon_submit, .urb_submit_error = mon_submit_error, .urb_complete = mon_complete, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/usb/storage/debug.h linux-2.6.36.4-pax/drivers/usb/storage/debug.h --- linux-2.6.36.4/drivers/usb/storage/debug.h 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/usb/storage/debug.h 2010-10-27 22:58:08.000000000 +0200 @@ -54,9 +54,9 @@ void usb_stor_show_sense( unsigned char #define US_DEBUGPX(x...) printk( x ) #define US_DEBUG(x) x #else -#define US_DEBUGP(x...) -#define US_DEBUGPX(x...) -#define US_DEBUG(x) +#define US_DEBUGP(x...) do {} while (0) +#define US_DEBUGPX(x...) do {} while (0) +#define US_DEBUG(x) do {} while (0) #endif #endif diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/usb/storage/usb.c linux-2.6.36.4-pax/drivers/usb/storage/usb.c --- linux-2.6.36.4/drivers/usb/storage/usb.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/usb/storage/usb.c 2010-10-27 22:58:08.000000000 +0200 @@ -122,7 +122,7 @@ MODULE_PARM_DESC(quirks, "supplemental l static struct us_unusual_dev us_unusual_dev_list[] = { # include "unusual_devs.h" - { } /* Terminating entry */ + { NULL, NULL, 0, 0, NULL } /* Terminating entry */ }; #undef UNUSUAL_DEV diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/usb/storage/usual-tables.c linux-2.6.36.4-pax/drivers/usb/storage/usual-tables.c --- linux-2.6.36.4/drivers/usb/storage/usual-tables.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/usb/storage/usual-tables.c 2010-10-27 22:58:08.000000000 +0200 @@ -48,7 +48,7 @@ struct usb_device_id usb_storage_usb_ids[] = { # include "unusual_devs.h" - { } /* Terminating entry */ + { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 } /* Terminating entry */ }; EXPORT_SYMBOL_GPL(usb_storage_usb_ids); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/uwb/wlp/messages.c linux-2.6.36.4-pax/drivers/uwb/wlp/messages.c --- linux-2.6.36.4/drivers/uwb/wlp/messages.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/uwb/wlp/messages.c 2010-10-27 22:58:08.000000000 +0200 @@ -920,7 +920,7 @@ int wlp_parse_f0(struct wlp *wlp, struct size_t len = skb->len; size_t used; ssize_t result; - struct wlp_nonce enonce, rnonce; + struct wlp_nonce enonce = {{0}}, rnonce = {{0}}; enum wlp_assc_error assc_err; char enonce_buf[WLP_WSS_NONCE_STRSIZE]; char rnonce_buf[WLP_WSS_NONCE_STRSIZE]; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/vhost/vhost.c linux-2.6.36.4-pax/drivers/vhost/vhost.c --- linux-2.6.36.4/drivers/vhost/vhost.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/vhost/vhost.c 2010-10-27 22:58:08.000000000 +0200 @@ -503,7 +503,7 @@ static int init_used(struct vhost_virtqu return get_user(vq->last_used_idx, &used->idx); } -static long vhost_set_vring(struct vhost_dev *d, int ioctl, void __user *argp) +static long vhost_set_vring(struct vhost_dev *d, unsigned int ioctl, void __user *argp) { struct file *eventfp, *filep = NULL, *pollstart = NULL, *pollstop = NULL; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/video/atmel_lcdfb.c linux-2.6.36.4-pax/drivers/video/atmel_lcdfb.c --- linux-2.6.36.4/drivers/video/atmel_lcdfb.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/video/atmel_lcdfb.c 2010-10-27 22:58:44.000000000 +0200 @@ -111,7 +111,7 @@ static int atmel_bl_get_brightness(struc return lcdc_readl(sinfo, ATMEL_LCDC_CONTRAST_VAL); } -static struct backlight_ops atmel_lcdc_bl_ops = { +static const struct backlight_ops atmel_lcdc_bl_ops = { .update_status = atmel_bl_update_status, .get_brightness = atmel_bl_get_brightness, }; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/video/aty/aty128fb.c linux-2.6.36.4-pax/drivers/video/aty/aty128fb.c --- linux-2.6.36.4/drivers/video/aty/aty128fb.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/video/aty/aty128fb.c 2010-10-27 22:58:44.000000000 +0200 @@ -1786,7 +1786,7 @@ static int aty128_bl_get_brightness(stru return bd->props.brightness; } -static struct backlight_ops aty128_bl_data = { +static const struct backlight_ops aty128_bl_data = { .get_brightness = aty128_bl_get_brightness, .update_status = aty128_bl_update_status, }; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/video/aty/atyfb_base.c linux-2.6.36.4-pax/drivers/video/aty/atyfb_base.c --- linux-2.6.36.4/drivers/video/aty/atyfb_base.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/video/aty/atyfb_base.c 2010-10-27 22:58:44.000000000 +0200 @@ -2221,7 +2221,7 @@ static int aty_bl_get_brightness(struct return bd->props.brightness; } -static struct backlight_ops aty_bl_data = { +static const struct backlight_ops aty_bl_data = { .get_brightness = aty_bl_get_brightness, .update_status = aty_bl_update_status, }; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/video/aty/radeon_backlight.c linux-2.6.36.4-pax/drivers/video/aty/radeon_backlight.c --- linux-2.6.36.4/drivers/video/aty/radeon_backlight.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/video/aty/radeon_backlight.c 2010-10-27 22:58:44.000000000 +0200 @@ -128,7 +128,7 @@ static int radeon_bl_get_brightness(stru return bd->props.brightness; } -static struct backlight_ops radeon_bl_data = { +static const struct backlight_ops radeon_bl_data = { .get_brightness = radeon_bl_get_brightness, .update_status = radeon_bl_update_status, }; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/video/backlight/88pm860x_bl.c linux-2.6.36.4-pax/drivers/video/backlight/88pm860x_bl.c --- linux-2.6.36.4/drivers/video/backlight/88pm860x_bl.c 2011-02-24 20:16:38.000000000 +0100 +++ linux-2.6.36.4-pax/drivers/video/backlight/88pm860x_bl.c 2011-02-24 20:27:40.000000000 +0100 @@ -155,7 +155,7 @@ out: return -EINVAL; } -static struct backlight_ops pm860x_backlight_ops = { +static const struct backlight_ops pm860x_backlight_ops = { .options = BL_CORE_SUSPENDRESUME, .update_status = pm860x_backlight_update_status, .get_brightness = pm860x_backlight_get_brightness, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/video/backlight/max8925_bl.c linux-2.6.36.4-pax/drivers/video/backlight/max8925_bl.c --- linux-2.6.36.4/drivers/video/backlight/max8925_bl.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/video/backlight/max8925_bl.c 2010-10-27 22:58:44.000000000 +0200 @@ -92,7 +92,7 @@ static int max8925_backlight_get_brightn return ret; } -static struct backlight_ops max8925_backlight_ops = { +static const struct backlight_ops max8925_backlight_ops = { .options = BL_CORE_SUSPENDRESUME, .update_status = max8925_backlight_update_status, .get_brightness = max8925_backlight_get_brightness, diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/video/fbcmap.c linux-2.6.36.4-pax/drivers/video/fbcmap.c --- linux-2.6.36.4/drivers/video/fbcmap.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/video/fbcmap.c 2010-10-27 22:58:08.000000000 +0200 @@ -266,8 +266,7 @@ int fb_set_user_cmap(struct fb_cmap_user rc = -ENODEV; goto out; } - if (cmap->start < 0 || (!info->fbops->fb_setcolreg && - !info->fbops->fb_setcmap)) { + if (!info->fbops->fb_setcolreg && !info->fbops->fb_setcmap) { rc = -EINVAL; goto out1; } diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/video/fbmem.c linux-2.6.36.4-pax/drivers/video/fbmem.c --- linux-2.6.36.4/drivers/video/fbmem.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/video/fbmem.c 2010-10-27 22:58:08.000000000 +0200 @@ -403,7 +403,7 @@ static void fb_do_show_logo(struct fb_in image->dx += image->width + 8; } } else if (rotate == FB_ROTATE_UD) { - for (x = 0; x < num && image->dx >= 0; x++) { + for (x = 0; x < num && (__s32)image->dx >= 0; x++) { info->fbops->fb_imageblit(info, image); image->dx -= image->width + 8; } @@ -415,7 +415,7 @@ static void fb_do_show_logo(struct fb_in image->dy += image->height + 8; } } else if (rotate == FB_ROTATE_CCW) { - for (x = 0; x < num && image->dy >= 0; x++) { + for (x = 0; x < num && (__s32)image->dy >= 0; x++) { info->fbops->fb_imageblit(info, image); image->dy -= image->height + 8; } @@ -1119,7 +1119,7 @@ static long do_fb_ioctl(struct fb_info * return -EFAULT; if (con2fb.console < 1 || con2fb.console > MAX_NR_CONSOLES) return -EINVAL; - if (con2fb.framebuffer < 0 || con2fb.framebuffer >= FB_MAX) + if (con2fb.framebuffer >= FB_MAX) return -EINVAL; if (!registered_fb[con2fb.framebuffer]) request_module("fb%d", con2fb.framebuffer); diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/video/fbmon.c linux-2.6.36.4-pax/drivers/video/fbmon.c --- linux-2.6.36.4/drivers/video/fbmon.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/video/fbmon.c 2010-10-27 22:58:08.000000000 +0200 @@ -46,7 +46,7 @@ #ifdef DEBUG #define DPRINTK(fmt, args...) printk(fmt,## args) #else -#define DPRINTK(fmt, args...) +#define DPRINTK(fmt, args...) do {} while (0) #endif #define FBMON_FIX_HEADER 1 diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/video/i810/i810_accel.c linux-2.6.36.4-pax/drivers/video/i810/i810_accel.c --- linux-2.6.36.4/drivers/video/i810/i810_accel.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/video/i810/i810_accel.c 2010-10-27 22:58:08.000000000 +0200 @@ -73,6 +73,7 @@ static inline int wait_for_space(struct } } printk("ringbuffer lockup!!!\n"); + printk("head:%u tail:%u iring.size:%u space:%u\n", head, tail, par->iring.size, space); i810_report_error(mmio); par->dev_flags |= LOCKUP; info->pixmap.scan_align = 1; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/video/i810/i810_main.c linux-2.6.36.4-pax/drivers/video/i810/i810_main.c --- linux-2.6.36.4/drivers/video/i810/i810_main.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/video/i810/i810_main.c 2010-10-27 22:58:08.000000000 +0200 @@ -120,7 +120,7 @@ static struct pci_device_id i810fb_pci_t PCI_ANY_ID, PCI_ANY_ID, 0, 0, 4 }, { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82815_CGC, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 5 }, - { 0 }, + { 0, 0, 0, 0, 0, 0, 0 }, }; static struct pci_driver i810fb_driver = { diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/video/modedb.c linux-2.6.36.4-pax/drivers/video/modedb.c --- linux-2.6.36.4/drivers/video/modedb.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/video/modedb.c 2010-10-27 22:58:08.000000000 +0200 @@ -40,240 +40,240 @@ static const struct fb_videomode modedb[ { /* 640x400 @ 70 Hz, 31.5 kHz hsync */ NULL, 70, 640, 400, 39721, 40, 24, 39, 9, 96, 2, - 0, FB_VMODE_NONINTERLACED + 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_UNKNOWN }, { /* 640x480 @ 60 Hz, 31.5 kHz hsync */ NULL, 60, 640, 480, 39721, 40, 24, 32, 11, 96, 2, - 0, FB_VMODE_NONINTERLACED + 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_UNKNOWN }, { /* 800x600 @ 56 Hz, 35.15 kHz hsync */ NULL, 56, 800, 600, 27777, 128, 24, 22, 1, 72, 2, - 0, FB_VMODE_NONINTERLACED + 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_UNKNOWN }, { /* 1024x768 @ 87 Hz interlaced, 35.5 kHz hsync */ NULL, 87, 1024, 768, 22271, 56, 24, 33, 8, 160, 8, - 0, FB_VMODE_INTERLACED + 0, FB_VMODE_INTERLACED, FB_MODE_IS_UNKNOWN }, { /* 640x400 @ 85 Hz, 37.86 kHz hsync */ NULL, 85, 640, 400, 31746, 96, 32, 41, 1, 64, 3, - FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED + FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_UNKNOWN }, { /* 640x480 @ 72 Hz, 36.5 kHz hsync */ NULL, 72, 640, 480, 31746, 144, 40, 30, 8, 40, 3, - 0, FB_VMODE_NONINTERLACED + 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_UNKNOWN }, { /* 640x480 @ 75 Hz, 37.50 kHz hsync */ NULL, 75, 640, 480, 31746, 120, 16, 16, 1, 64, 3, - 0, FB_VMODE_NONINTERLACED + 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_UNKNOWN }, { /* 800x600 @ 60 Hz, 37.8 kHz hsync */ NULL, 60, 800, 600, 25000, 88, 40, 23, 1, 128, 4, - FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED + FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_UNKNOWN }, { /* 640x480 @ 85 Hz, 43.27 kHz hsync */ NULL, 85, 640, 480, 27777, 80, 56, 25, 1, 56, 3, - 0, FB_VMODE_NONINTERLACED + 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_UNKNOWN }, { /* 1152x864 @ 89 Hz interlaced, 44 kHz hsync */ NULL, 89, 1152, 864, 15384, 96, 16, 110, 1, 216, 10, - 0, FB_VMODE_INTERLACED + 0, FB_VMODE_INTERLACED, FB_MODE_IS_UNKNOWN }, { /* 800x600 @ 72 Hz, 48.0 kHz hsync */ NULL, 72, 800, 600, 20000, 64, 56, 23, 37, 120, 6, - FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED + FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_UNKNOWN }, { /* 1024x768 @ 60 Hz, 48.4 kHz hsync */ NULL, 60, 1024, 768, 15384, 168, 8, 29, 3, 144, 6, - 0, FB_VMODE_NONINTERLACED + 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_UNKNOWN }, { /* 640x480 @ 100 Hz, 53.01 kHz hsync */ NULL, 100, 640, 480, 21834, 96, 32, 36, 8, 96, 6, - 0, FB_VMODE_NONINTERLACED + 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_UNKNOWN }, { /* 1152x864 @ 60 Hz, 53.5 kHz hsync */ NULL, 60, 1152, 864, 11123, 208, 64, 16, 4, 256, 8, - 0, FB_VMODE_NONINTERLACED + 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_UNKNOWN }, { /* 800x600 @ 85 Hz, 55.84 kHz hsync */ NULL, 85, 800, 600, 16460, 160, 64, 36, 16, 64, 5, - 0, FB_VMODE_NONINTERLACED + 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_UNKNOWN }, { /* 1024x768 @ 70 Hz, 56.5 kHz hsync */ NULL, 70, 1024, 768, 13333, 144, 24, 29, 3, 136, 6, - 0, FB_VMODE_NONINTERLACED + 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_UNKNOWN }, { /* 1280x1024 @ 87 Hz interlaced, 51 kHz hsync */ NULL, 87, 1280, 1024, 12500, 56, 16, 128, 1, 216, 12, - 0, FB_VMODE_INTERLACED + 0, FB_VMODE_INTERLACED, FB_MODE_IS_UNKNOWN }, { /* 800x600 @ 100 Hz, 64.02 kHz hsync */ NULL, 100, 800, 600, 14357, 160, 64, 30, 4, 64, 6, - 0, FB_VMODE_NONINTERLACED + 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_UNKNOWN }, { /* 1024x768 @ 76 Hz, 62.5 kHz hsync */ NULL, 76, 1024, 768, 11764, 208, 8, 36, 16, 120, 3, - 0, FB_VMODE_NONINTERLACED + 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_UNKNOWN }, { /* 1152x864 @ 70 Hz, 62.4 kHz hsync */ NULL, 70, 1152, 864, 10869, 106, 56, 20, 1, 160, 10, - 0, FB_VMODE_NONINTERLACED + 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_UNKNOWN }, { /* 1280x1024 @ 61 Hz, 64.2 kHz hsync */ NULL, 61, 1280, 1024, 9090, 200, 48, 26, 1, 184, 3, - 0, FB_VMODE_NONINTERLACED + 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_UNKNOWN }, { /* 1400x1050 @ 60Hz, 63.9 kHz hsync */ NULL, 60, 1400, 1050, 9259, 136, 40, 13, 1, 112, 3, - 0, FB_VMODE_NONINTERLACED + 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_UNKNOWN }, { /* 1400x1050 @ 75,107 Hz, 82,392 kHz +hsync +vsync*/ NULL, 75, 1400, 1050, 7190, 120, 56, 23, 10, 112, 13, - FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED + FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_UNKNOWN }, { /* 1400x1050 @ 60 Hz, ? kHz +hsync +vsync*/ NULL, 60, 1400, 1050, 9259, 128, 40, 12, 0, 112, 3, - FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED + FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_UNKNOWN }, { /* 1024x768 @ 85 Hz, 70.24 kHz hsync */ NULL, 85, 1024, 768, 10111, 192, 32, 34, 14, 160, 6, - 0, FB_VMODE_NONINTERLACED + 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_UNKNOWN }, { /* 1152x864 @ 78 Hz, 70.8 kHz hsync */ NULL, 78, 1152, 864, 9090, 228, 88, 32, 0, 84, 12, - 0, FB_VMODE_NONINTERLACED + 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_UNKNOWN }, { /* 1280x1024 @ 70 Hz, 74.59 kHz hsync */ NULL, 70, 1280, 1024, 7905, 224, 32, 28, 8, 160, 8, - 0, FB_VMODE_NONINTERLACED + 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_UNKNOWN }, { /* 1600x1200 @ 60Hz, 75.00 kHz hsync */ NULL, 60, 1600, 1200, 6172, 304, 64, 46, 1, 192, 3, - FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED + FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_UNKNOWN }, { /* 1152x864 @ 84 Hz, 76.0 kHz hsync */ NULL, 84, 1152, 864, 7407, 184, 312, 32, 0, 128, 12, - 0, FB_VMODE_NONINTERLACED + 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_UNKNOWN }, { /* 1280x1024 @ 74 Hz, 78.85 kHz hsync */ NULL, 74, 1280, 1024, 7407, 256, 32, 34, 3, 144, 3, - 0, FB_VMODE_NONINTERLACED + 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_UNKNOWN }, { /* 1024x768 @ 100Hz, 80.21 kHz hsync */ NULL, 100, 1024, 768, 8658, 192, 32, 21, 3, 192, 10, - 0, FB_VMODE_NONINTERLACED + 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_UNKNOWN }, { /* 1280x1024 @ 76 Hz, 81.13 kHz hsync */ NULL, 76, 1280, 1024, 7407, 248, 32, 34, 3, 104, 3, - 0, FB_VMODE_NONINTERLACED + 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_UNKNOWN }, { /* 1600x1200 @ 70 Hz, 87.50 kHz hsync */ NULL, 70, 1600, 1200, 5291, 304, 64, 46, 1, 192, 3, - 0, FB_VMODE_NONINTERLACED + 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_UNKNOWN }, { /* 1152x864 @ 100 Hz, 89.62 kHz hsync */ NULL, 100, 1152, 864, 7264, 224, 32, 17, 2, 128, 19, - 0, FB_VMODE_NONINTERLACED + 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_UNKNOWN }, { /* 1280x1024 @ 85 Hz, 91.15 kHz hsync */ NULL, 85, 1280, 1024, 6349, 224, 64, 44, 1, 160, 3, - FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED + FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_UNKNOWN }, { /* 1600x1200 @ 75 Hz, 93.75 kHz hsync */ NULL, 75, 1600, 1200, 4938, 304, 64, 46, 1, 192, 3, - FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED + FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_UNKNOWN }, { /* 1680x1050 @ 60 Hz, 65.191 kHz hsync */ NULL, 60, 1680, 1050, 6848, 280, 104, 30, 3, 176, 6, - FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED + FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_UNKNOWN }, { /* 1600x1200 @ 85 Hz, 105.77 kHz hsync */ NULL, 85, 1600, 1200, 4545, 272, 16, 37, 4, 192, 3, - FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED + FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_UNKNOWN }, { /* 1280x1024 @ 100 Hz, 107.16 kHz hsync */ NULL, 100, 1280, 1024, 5502, 256, 32, 26, 7, 128, 15, - 0, FB_VMODE_NONINTERLACED + 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_UNKNOWN }, { /* 1800x1440 @ 64Hz, 96.15 kHz hsync */ NULL, 64, 1800, 1440, 4347, 304, 96, 46, 1, 192, 3, - FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED + FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_UNKNOWN }, { /* 1800x1440 @ 70Hz, 104.52 kHz hsync */ NULL, 70, 1800, 1440, 4000, 304, 96, 46, 1, 192, 3, - FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED + FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_UNKNOWN }, { /* 512x384 @ 78 Hz, 31.50 kHz hsync */ NULL, 78, 512, 384, 49603, 48, 16, 16, 1, 64, 3, - 0, FB_VMODE_NONINTERLACED + 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_UNKNOWN }, { /* 512x384 @ 85 Hz, 34.38 kHz hsync */ NULL, 85, 512, 384, 45454, 48, 16, 16, 1, 64, 3, - 0, FB_VMODE_NONINTERLACED + 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_UNKNOWN }, { /* 320x200 @ 70 Hz, 31.5 kHz hsync, 8:5 aspect ratio */ NULL, 70, 320, 200, 79440, 16, 16, 20, 4, 48, 1, - 0, FB_VMODE_DOUBLE + 0, FB_VMODE_DOUBLE, FB_MODE_IS_UNKNOWN }, { /* 320x240 @ 60 Hz, 31.5 kHz hsync, 4:3 aspect ratio */ NULL, 60, 320, 240, 79440, 16, 16, 16, 5, 48, 1, - 0, FB_VMODE_DOUBLE + 0, FB_VMODE_DOUBLE, FB_MODE_IS_UNKNOWN }, { /* 320x240 @ 72 Hz, 36.5 kHz hsync */ NULL, 72, 320, 240, 63492, 16, 16, 16, 4, 48, 2, - 0, FB_VMODE_DOUBLE + 0, FB_VMODE_DOUBLE, FB_MODE_IS_UNKNOWN }, { /* 400x300 @ 56 Hz, 35.2 kHz hsync, 4:3 aspect ratio */ NULL, 56, 400, 300, 55555, 64, 16, 10, 1, 32, 1, - 0, FB_VMODE_DOUBLE + 0, FB_VMODE_DOUBLE, FB_MODE_IS_UNKNOWN }, { /* 400x300 @ 60 Hz, 37.8 kHz hsync */ NULL, 60, 400, 300, 50000, 48, 16, 11, 1, 64, 2, - 0, FB_VMODE_DOUBLE + 0, FB_VMODE_DOUBLE, FB_MODE_IS_UNKNOWN }, { /* 400x300 @ 72 Hz, 48.0 kHz hsync */ NULL, 72, 400, 300, 40000, 32, 24, 11, 19, 64, 3, - 0, FB_VMODE_DOUBLE + 0, FB_VMODE_DOUBLE, FB_MODE_IS_UNKNOWN }, { /* 480x300 @ 56 Hz, 35.2 kHz hsync, 8:5 aspect ratio */ NULL, 56, 480, 300, 46176, 80, 16, 10, 1, 40, 1, - 0, FB_VMODE_DOUBLE + 0, FB_VMODE_DOUBLE, FB_MODE_IS_UNKNOWN }, { /* 480x300 @ 60 Hz, 37.8 kHz hsync */ NULL, 60, 480, 300, 41858, 56, 16, 11, 1, 80, 2, - 0, FB_VMODE_DOUBLE + 0, FB_VMODE_DOUBLE, FB_MODE_IS_UNKNOWN }, { /* 480x300 @ 63 Hz, 39.6 kHz hsync */ NULL, 63, 480, 300, 40000, 56, 16, 11, 1, 80, 2, - 0, FB_VMODE_DOUBLE + 0, FB_VMODE_DOUBLE, FB_MODE_IS_UNKNOWN }, { /* 480x300 @ 72 Hz, 48.0 kHz hsync */ NULL, 72, 480, 300, 33386, 40, 24, 11, 19, 80, 3, - 0, FB_VMODE_DOUBLE + 0, FB_VMODE_DOUBLE, FB_MODE_IS_UNKNOWN }, { /* 1920x1200 @ 60 Hz, 74.5 Khz hsync */ NULL, 60, 1920, 1200, 5177, 128, 336, 1, 38, 208, 3, FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, - FB_VMODE_NONINTERLACED + FB_VMODE_NONINTERLACED, FB_MODE_IS_UNKNOWN }, { /* 1152x768, 60 Hz, PowerBook G4 Titanium I and II */ NULL, 60, 1152, 768, 14047, 158, 26, 29, 3, 136, 6, - FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED + FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED, FB_MODE_IS_UNKNOWN }, { /* 1366x768, 60 Hz, 47.403 kHz hsync, WXGA 16:9 aspect ratio */ NULL, 60, 1366, 768, 13806, 120, 10, 14, 3, 32, 5, - 0, FB_VMODE_NONINTERLACED + 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_UNKNOWN }, { /* 1280x800, 60 Hz, 47.403 kHz hsync, WXGA 16:10 aspect ratio */ NULL, 60, 1280, 800, 12048, 200, 64, 24, 1, 136, 3, - 0, FB_VMODE_NONINTERLACED + 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_UNKNOWN }, { /* 720x576i @ 50 Hz, 15.625 kHz hsync (PAL RGB) */ NULL, 50, 720, 576, 74074, 64, 16, 39, 5, 64, 5, - 0, FB_VMODE_INTERLACED + 0, FB_VMODE_INTERLACED, FB_MODE_IS_UNKNOWN }, { /* 800x520i @ 50 Hz, 15.625 kHz hsync (PAL RGB) */ NULL, 50, 800, 520, 58823, 144, 64, 72, 28, 80, 5, - 0, FB_VMODE_INTERLACED + 0, FB_VMODE_INTERLACED, FB_MODE_IS_UNKNOWN }, }; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/video/nvidia/nv_backlight.c linux-2.6.36.4-pax/drivers/video/nvidia/nv_backlight.c --- linux-2.6.36.4/drivers/video/nvidia/nv_backlight.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/video/nvidia/nv_backlight.c 2010-10-27 22:58:44.000000000 +0200 @@ -87,7 +87,7 @@ static int nvidia_bl_get_brightness(stru return bd->props.brightness; } -static struct backlight_ops nvidia_bl_ops = { +static const struct backlight_ops nvidia_bl_ops = { .get_brightness = nvidia_bl_get_brightness, .update_status = nvidia_bl_update_status, }; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/video/omap2/displays/panel-taal.c linux-2.6.36.4-pax/drivers/video/omap2/displays/panel-taal.c --- linux-2.6.36.4/drivers/video/omap2/displays/panel-taal.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/video/omap2/displays/panel-taal.c 2010-10-27 22:58:44.000000000 +0200 @@ -465,7 +465,7 @@ static int taal_bl_get_intensity(struct return 0; } -static struct backlight_ops taal_bl_ops = { +static const struct backlight_ops taal_bl_ops = { .get_brightness = taal_bl_get_intensity, .update_status = taal_bl_update_status, }; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/video/riva/fbdev.c linux-2.6.36.4-pax/drivers/video/riva/fbdev.c --- linux-2.6.36.4/drivers/video/riva/fbdev.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/video/riva/fbdev.c 2010-10-27 22:58:44.000000000 +0200 @@ -331,7 +331,7 @@ static int riva_bl_get_brightness(struct return bd->props.brightness; } -static struct backlight_ops riva_bl_ops = { +static const struct backlight_ops riva_bl_ops = { .get_brightness = riva_bl_get_brightness, .update_status = riva_bl_update_status, }; diff -NurpX linux-2.6.36.4-pax/Documentation/dontdiff linux-2.6.36.4/drivers/video/uvesafb.c linux-2.6.36.4-pax/drivers/video/uvesafb.c --- linux-2.6.36.4/drivers/video/uvesafb.c 2010-10-20 22:30:22.000000000 +0200 +++ linux-2.6.36.4-pax/drivers/video/uvesafb.c 2010-10-27 22:58:08.000000000 +0200 @@ -19,6 +19,7 @@ #include #include #include +#include #include