Author: zbyniu Date: Sat Sep 8 18:52:54 2007 GMT
Module: SOURCES Tag: LINUX_2_6
---- Log message:
- raw http://www.grsecurity.net/~paxguy1/pax-linux-2.6.22.6-test26.patch
---- Files affected:
SOURCES:
kernel-pax.patch (NONE -> 1.1.2.1) (NEW)
---- Diffs:
================================================================
Index: SOURCES/kernel-pax.patch
diff -u /dev/null SOURCES/kernel-pax.patch:1.1.2.1
--- /dev/null Sat Sep 8 20:52:54 2007
+++ SOURCES/kernel-pax.patch Sat Sep 8 20:52:49 2007
@@ -0,0 +1,20949 @@
+diff -NurpX linux-2.6.22.6-pax/Documentation/dontdiff
linux-2.6.22.6/Documentation/dontdiff linux-2.6.22.6-pax/Documentation/dontdiff
+--- linux-2.6.22.6/Documentation/dontdiff 2007-07-09 01:32:17.000000000
+0200
++++ linux-2.6.22.6-pax/Documentation/dontdiff 2007-07-10 02:05:11.000000000
+0200
+@@ -177,10 +177,13 @@ version.h*
+ vmlinux
+ vmlinux-*
+ vmlinux.aout
++vmlinux.bin.all
+ vmlinux.lds
++vmlinux.relocs
+ vsyscall.lds
+ wanxlfw.inc
+ uImage
+ unifdef
++utsrelease.h
+ zImage*
+ zconf.hash.c
+diff -NurpX linux-2.6.22.6-pax/Documentation/dontdiff linux-2.6.22.6/Makefile
linux-2.6.22.6-pax/Makefile
+--- linux-2.6.22.6/Makefile 2007-08-31 14:33:33.000000000 +0200
++++ linux-2.6.22.6-pax/Makefile 2007-08-31 14:37:51.000000000 +0200
+@@ -312,7 +312,7 @@ LINUXINCLUDE := -Iinclude \
+
+ CPPFLAGS := -D__KERNEL__ $(LINUXINCLUDE)
+
+-CFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \
++CFLAGS := -Wall -W -Wno-unused -Wno-sign-compare -Wundef
-Wstrict-prototypes -Wno-trigraphs \
+ -fno-strict-aliasing -fno-common
+ AFLAGS := -D__ASSEMBLY__
+
+diff -NurpX linux-2.6.22.6-pax/Documentation/dontdiff
linux-2.6.22.6/arch/alpha/kernel/module.c
linux-2.6.22.6-pax/arch/alpha/kernel/module.c
+--- linux-2.6.22.6/arch/alpha/kernel/module.c 2007-07-09 01:32:17.000000000
+0200
++++ linux-2.6.22.6-pax/arch/alpha/kernel/module.c 2007-07-10
02:05:11.000000000 +0200
+@@ -177,7 +177,7 @@ 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-2.6.22.6-pax/Documentation/dontdiff
linux-2.6.22.6/arch/alpha/kernel/osf_sys.c
linux-2.6.22.6-pax/arch/alpha/kernel/osf_sys.c
+--- linux-2.6.22.6/arch/alpha/kernel/osf_sys.c 2007-07-09 01:32:17.000000000
+0200
++++ linux-2.6.22.6-pax/arch/alpha/kernel/osf_sys.c 2007-07-10
02:05:11.000000000 +0200
+@@ -1288,6 +1288,10 @@ 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) || !filp)
++#endif
++
+ if (addr) {
+ addr = arch_get_unmapped_area_1 (PAGE_ALIGN(addr), len, limit);
+ if (addr != (unsigned long) -ENOMEM)
+@@ -1295,8 +1299,8 @@ 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-2.6.22.6-pax/Documentation/dontdiff
linux-2.6.22.6/arch/alpha/mm/fault.c linux-2.6.22.6-pax/arch/alpha/mm/fault.c
+--- linux-2.6.22.6/arch/alpha/mm/fault.c 2007-07-09 01:32:17.000000000
+0200
++++ linux-2.6.22.6-pax/arch/alpha/mm/fault.c 2007-07-29 21:45:49.000000000
+0200
+@@ -23,6 +23,7 @@
+ #include <linux/smp.h>
+ #include <linux/interrupt.h>
+ #include <linux/module.h>
++#include <linux/binfmts.h>
+
+ #include <asm/system.h>
+ #include <asm/uaccess.h>
+@@ -54,6 +55,124 @@ __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("???????? ");
++ else
++ printk("%08x ", c);
++ }
++ printk("\n");
++}
++#endif
+
+ /*
+ * This routine handles page faults. It determines the address,
+@@ -131,8 +250,29 @@ 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_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-2.6.22.6-pax/Documentation/dontdiff
linux-2.6.22.6/arch/arm/mm/mmap.c linux-2.6.22.6-pax/arch/arm/mm/mmap.c
+--- linux-2.6.22.6/arch/arm/mm/mmap.c 2007-07-09 01:32:17.000000000 +0200
++++ linux-2.6.22.6-pax/arch/arm/mm/mmap.c 2007-07-29 21:45:49.000000000
+0200
+@@ -60,6 +60,10 @@ arch_get_unmapped_area(struct file *filp
+ if (len > TASK_SIZE)
+ return -ENOMEM;
+
++#ifdef CONFIG_PAX_RANDMMAP
++ if (!(mm->pax_flags & MF_PAX_RANDMMAP) || !filp)
++#endif
++
+ if (addr) {
+ if (do_align)
+ addr = COLOUR_ALIGN(addr, pgoff);
+@@ -72,10 +76,10 @@ arch_get_unmapped_area(struct file *filp
+ 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;
+ }
+
+ full_search:
+@@ -91,8 +95,8 @@ 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;
+ }
+diff -NurpX linux-2.6.22.6-pax/Documentation/dontdiff
linux-2.6.22.6/arch/avr32/mm/fault.c linux-2.6.22.6-pax/arch/avr32/mm/fault.c
+--- linux-2.6.22.6/arch/avr32/mm/fault.c 2007-07-09 01:32:17.000000000
+0200
++++ linux-2.6.22.6-pax/arch/avr32/mm/fault.c 2007-07-29 21:45:49.000000000
+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("???????? ");
++ else
++ printk("%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.
+@@ -158,6 +175,16 @@ 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_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-2.6.22.6-pax/Documentation/dontdiff
linux-2.6.22.6/arch/i386/Kconfig linux-2.6.22.6-pax/arch/i386/Kconfig
+--- linux-2.6.22.6/arch/i386/Kconfig 2007-07-09 01:32:17.000000000 +0200
++++ linux-2.6.22.6-pax/arch/i386/Kconfig 2007-07-10 02:05:11.000000000
+0200
+@@ -586,7 +586,7 @@ 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
+
+@@ -815,7 +815,7 @@ config CRASH_DUMP
+
+ config PHYSICAL_START
+ hex "Physical address where the kernel is loaded" if (EMBEDDED ||
CRASH_DUMP)
+- default "0x100000"
++ default "0x200000"
+ help
+ This gives the physical address where the kernel is loaded.
+
+@@ -900,7 +900,7 @@ config HOTPLUG_CPU
+
+ config COMPAT_VDSO
+ bool "Compat VDSO support"
+- default y
++ default n
+ help
+ Map the VDSO to the predictable old-style address too.
+ ---help---
+@@ -1076,7 +1076,7 @@ config PCI
+ choice
+ prompt "PCI access mode"
+ depends on PCI && !X86_VISWS
+- default PCI_GOANY
++ default PCI_GODIRECT
+ ---help---
+ On PCI systems, the BIOS can be used to detect the PCI devices and
+ determine their configuration. However, some old PCI motherboards
+diff -NurpX linux-2.6.22.6-pax/Documentation/dontdiff
linux-2.6.22.6/arch/i386/Kconfig.cpu linux-2.6.22.6-pax/arch/i386/Kconfig.cpu
+--- linux-2.6.22.6/arch/i386/Kconfig.cpu 2007-07-09 01:32:17.000000000
+0200
++++ linux-2.6.22.6-pax/arch/i386/Kconfig.cpu 2007-07-10 02:05:11.000000000
+0200
+@@ -274,7 +274,7 @@ config X86_PPRO_FENCE
+
+ config X86_F00F_BUG
+ bool
+- depends on M586MMX || M586TSC || M586 || M486 || M386
++ depends on (M586MMX || M586TSC || M586 || M486 || M386) && !PAX_KERNEXEC
+ default y
+
+ config X86_WP_WORKS_OK
+@@ -304,7 +304,7 @@ config X86_CMPXCHG64
+
+ config X86_ALIGNMENT_16
+ bool
+- depends on MWINCHIP3D || MWINCHIP2 || MWINCHIPC6 || MCYRIXIII ||
X86_ELAN || MK6 || M586MMX || M586TSC || M586 || M486 || MVIAC3_2 || MGEODEGX1
++ depends on MWINCHIP3D || MWINCHIP2 || MWINCHIPC6 || MCYRIXIII ||
X86_ELAN || MK8 || MK7 || MK6 || MPENTIUM4 || MPENTIUMIII || MPENTIUMII || M686
|| M586MMX || M586TSC || M586 || M486 || MVIAC3_2 || MGEODEGX1
+ default y
+
+ config X86_GOOD_APIC
+diff -NurpX linux-2.6.22.6-pax/Documentation/dontdiff
linux-2.6.22.6/arch/i386/Kconfig.debug
linux-2.6.22.6-pax/arch/i386/Kconfig.debug
+--- linux-2.6.22.6/arch/i386/Kconfig.debug 2007-07-09 01:32:17.000000000
+0200
++++ linux-2.6.22.6-pax/arch/i386/Kconfig.debug 2007-07-10 02:05:11.000000000
+0200
+@@ -48,7 +48,7 @@ config DEBUG_PAGEALLOC
+
+ config DEBUG_RODATA
+ bool "Write protect kernel read-only data structures"
+- depends on DEBUG_KERNEL
++ depends on DEBUG_KERNEL && !PAX_KERNEXEC
+ 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-2.6.22.6-pax/Documentation/dontdiff
linux-2.6.22.6/arch/i386/boot/setup.S linux-2.6.22.6-pax/arch/i386/boot/setup.S
+--- linux-2.6.22.6/arch/i386/boot/setup.S 2007-07-09 01:32:17.000000000
+0200
++++ linux-2.6.22.6-pax/arch/i386/boot/setup.S 2007-07-10 02:05:11.000000000
+0200
+@@ -893,11 +893,13 @@ startup_32:
+ movl %eax, %gs
+ movl %eax, %ss
+
++ movl 0x00000000, %ecx
+ xorl %eax, %eax
+ 1: incl %eax # check that A20 really IS
enabled
+ movl %eax, 0x00000000 # loop forever if it isn't
+ cmpl %eax, 0x00100000
+ je 1b
++ movl %ecx, 0x00000000
+
+ # Jump to the 32bit entry point
+ jmpl *(code32_start - start + (DELTA_INITSEG << 4))(%esi)
+diff -NurpX linux-2.6.22.6-pax/Documentation/dontdiff
linux-2.6.22.6/arch/i386/boot/video.S linux-2.6.22.6-pax/arch/i386/boot/video.S
+--- linux-2.6.22.6/arch/i386/boot/video.S 2007-07-09 01:32:17.000000000
+0200
++++ linux-2.6.22.6-pax/arch/i386/boot/video.S 2007-08-19 17:23:53.000000000
+0200
+@@ -96,6 +96,7 @@
+ #define PARAM_LFB_PAGES 0x32
+ #define PARAM_VESA_ATTRIB 0x34
+ #define PARAM_CAPABILITIES 0x36
++#define PARAM_VESAPM_SIZE 0x3a
+
+ /* Define DO_STORE according to CONFIG_VIDEO_RETAIN */
+ #ifdef CONFIG_VIDEO_RETAIN
+@@ -280,6 +281,7 @@ dac_done:
+
+ movw %es, %fs:(PARAM_VESAPM_SEG)
+ movw %di, %fs:(PARAM_VESAPM_OFF)
++ movw %cx, %fs:(PARAM_VESAPM_SIZE)
+ no_pm: ret
+
+ # The video mode menu
+diff -NurpX linux-2.6.22.6-pax/Documentation/dontdiff
linux-2.6.22.6/arch/i386/kernel/acpi/boot.c
linux-2.6.22.6-pax/arch/i386/kernel/acpi/boot.c
+--- linux-2.6.22.6/arch/i386/kernel/acpi/boot.c 2007-07-09
01:32:17.000000000 +0200
++++ linux-2.6.22.6-pax/arch/i386/kernel/acpi/boot.c 2007-07-10
02:05:11.000000000 +0200
+@@ -1095,7 +1095,7 @@ static struct dmi_system_id __initdata a
+ DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 360"),
+ },
+ },
+- {}
++ { NULL, NULL, {{0, NULL}}, NULL}
+ };
+
+ #endif /* __i386__ */
+diff -NurpX linux-2.6.22.6-pax/Documentation/dontdiff
linux-2.6.22.6/arch/i386/kernel/acpi/sleep.c
linux-2.6.22.6-pax/arch/i386/kernel/acpi/sleep.c
+--- linux-2.6.22.6/arch/i386/kernel/acpi/sleep.c 2007-07-09
01:32:17.000000000 +0200
++++ linux-2.6.22.6-pax/arch/i386/kernel/acpi/sleep.c 2007-07-10
02:05:11.000000000 +0200
+@@ -94,7 +94,7 @@ static __initdata struct dmi_system_id a
+ DMI_MATCH(DMI_PRODUCT_NAME, "S4030CDT/4.3"),
+ },
+ },
+- {}
++ { NULL, NULL, {{0, NULL}}, NULL}
+ };
+
+ static int __init acpisleep_dmi_init(void)
+diff -NurpX linux-2.6.22.6-pax/Documentation/dontdiff
linux-2.6.22.6/arch/i386/kernel/acpi/wakeup.S
linux-2.6.22.6-pax/arch/i386/kernel/acpi/wakeup.S
+--- linux-2.6.22.6/arch/i386/kernel/acpi/wakeup.S 2007-07-09
01:32:17.000000000 +0200
++++ linux-2.6.22.6-pax/arch/i386/kernel/acpi/wakeup.S 2007-07-10
02:05:11.000000000 +0200
+@@ -2,6 +2,7 @@
+ #include <linux/linkage.h>
+ #include <asm/segment.h>
+ #include <asm/page.h>
++#include <asm/msr-index.h>
+
+ #
+ # wakeup_code runs in real mode, and at unknown address (determined at
run-time).
+@@ -64,7 +65,7 @@ wakeup_code:
+ # restore efer setting
+ movl real_save_efer_edx - wakeup_code, %edx
+ movl real_save_efer_eax - wakeup_code, %eax
+- mov $0xc0000080, %ecx
++ mov $MSR_EFER, %ecx
+ wrmsr
+ 4:
+ # make sure %cr4 is set correctly (features, etc)
+@@ -205,13 +206,11 @@ 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:
+ movw $0x0e00 + 'B', 0xb8018
+@@ -243,7 +242,7 @@ ENTRY(acpi_copy_wakeup_routine)
+ # save efer setting
+ pushl %eax
+ movl %eax, %ebx
+- mov $0xc0000080, %ecx
++ mov $MSR_EFER, %ecx
+ rdmsr
+ movl %edx, real_save_efer_edx - wakeup_start (%ebx)
+ movl %eax, real_save_efer_eax - wakeup_start (%ebx)
+diff -NurpX linux-2.6.22.6-pax/Documentation/dontdiff
linux-2.6.22.6/arch/i386/kernel/alternative.c
linux-2.6.22.6-pax/arch/i386/kernel/alternative.c
+--- linux-2.6.22.6/arch/i386/kernel/alternative.c 2007-07-09
01:32:17.000000000 +0200
++++ linux-2.6.22.6-pax/arch/i386/kernel/alternative.c 2007-08-11
22:49:55.000000000 +0200
+@@ -4,6 +4,7 @@
+ #include <linux/list.h>
+ #include <asm/alternative.h>
+ #include <asm/sections.h>
++#include <asm/desc.h>
+
+ static int noreplace_smp = 0;
+ static int smp_alt_once = 0;
+@@ -165,12 +166,18 @@ void apply_alternatives(struct alt_instr
+ u8 *instr;
+ int diff;
+
++#ifdef CONFIG_PAX_KERNEXEC
++ unsigned long cr0;
++
++ pax_open_kernel(cr0);
++#endif
++
+ DPRINTK("%s: alt table %p -> %p\n", __FUNCTION__, start, end);
+ for (a = start; a < end; a++) {
+ BUG_ON(a->replacementlen > a->instrlen);
+ if (!boot_cpu_has(a->cpuid))
+ continue;
+- instr = a->instr;
++ instr = a->instr + __KERNEL_TEXT_OFFSET;
+ #ifdef CONFIG_X86_64
+ /* vsyscall code is not mapped yet. resolve it manually. */
+ if (instr >= (u8 *)VSYSCALL_START && instr < (u8*)VSYSCALL_END)
{
+@@ -183,6 +190,11 @@ void apply_alternatives(struct alt_instr
+ diff = a->instrlen - a->replacementlen;
+ nop_out(instr + a->replacementlen, diff);
+ }
++
++#ifdef CONFIG_PAX_KERNEXEC
++ pax_close_kernel(cr0);
++#endif
++
+ }
+
+ #ifdef CONFIG_SMP
+@@ -191,29 +203,53 @@ static void alternatives_smp_lock(u8 **s
+ {
+ u8 **ptr;
+
++#ifdef CONFIG_PAX_KERNEXEC
++ unsigned long cr0;
++
++ pax_open_kernel(cr0);
++#endif
++
+ for (ptr = start; ptr < end; ptr++) {
+ if (*ptr < text)
+ continue;
+ if (*ptr > text_end)
+ continue;
+- **ptr = 0xf0; /* lock prefix */
+- };
++ *(*ptr + __KERNEL_TEXT_OFFSET) = 0xf0; /* lock prefix */
++ }
++
++#ifdef CONFIG_PAX_KERNEXEC
++ pax_close_kernel(cr0);
++#endif
++
+ }
+
+ static void alternatives_smp_unlock(u8 **start, u8 **end, u8 *text, u8
*text_end)
+ {
+ u8 **ptr;
+
++#ifdef CONFIG_PAX_KERNEXEC
++ unsigned long cr0;
++#endif
++
+ if (noreplace_smp)
+ return;
+
++#ifdef CONFIG_PAX_KERNEXEC
++ pax_open_kernel(cr0);
++#endif
++
+ for (ptr = start; ptr < end; ptr++) {
+ if (*ptr < text)
+ continue;
+ if (*ptr > text_end)
+ continue;
+- nop_out(*ptr, 1);
+- };
++ nop_out(*ptr + __KERNEL_TEXT_OFFSET, 1);
++ }
++
++#ifdef CONFIG_PAX_KERNEXEC
++ pax_close_kernel(cr0);
++#endif
++
<<Diff was trimmed, longer than 597 lines>>
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