/*
* These are the functions used to load ELF style executables and shared
* libraries. There is no binary dependent code anywhere else.
+@@ -515,6 +697,11 @@ static unsigned long rando
+ {
+ unsigned int random_variable = 0;
+
++#ifdef CONFIG_PAX_RANDUSTACK
++ if (randomize_va_space)
++ return stack_top - current->mm->delta_stack;
++#endif
++
+ if ((current->flags & PF_RANDOMIZE) &&
+ !(current->personality & ADDR_NO_RANDOMIZE)) {
+ random_variable = get_random_int() & STACK_RND_MASK;
@@ -533,7 +717,7 @@ static int load_elf_binary(struct linux_
unsigned long load_addr = 0, load_bias = 0;
int load_addr_set = 0;
#define PAGE_KERNEL __pgprot(_PAGE_VALID | _PAGE_ASM | _PAGE_KRE | _PAGE_KWE)
#define _PAGE_NORMAL(x) __pgprot(_PAGE_VALID | __ACCESS_BITS | (x))
-diff -urNp linux-2.6.25.4/include/asm-alpha/processor.h linux-2.6.25.4/include/asm-alpha/processor.h
---- linux-2.6.25.4/include/asm-alpha/processor.h 2008-05-15 11:00:12.000000000 -0400
-+++ linux-2.6.25.4/include/asm-alpha/processor.h 2008-05-18 13:33:17.000000000 -0400
-@@ -20,7 +20,7 @@
- */
- #define TASK_SIZE (0x40000000000UL)
-
--#define STACK_TOP \
-+#define __STACK_TOP \
- (current->personality & ADDR_LIMIT_32BIT ? 0x80000000 : 0x00120000000UL)
-
- #define STACK_TOP_MAX 0x00120000000UL
diff -urNp linux-2.6.25.4/include/asm-arm/elf.h linux-2.6.25.4/include/asm-arm/elf.h
--- linux-2.6.25.4/include/asm-arm/elf.h 2008-05-15 11:00:12.000000000 -0400
+++ linux-2.6.25.4/include/asm-arm/elf.h 2008-05-18 13:33:17.000000000 -0400
KM_TYPE_NR
};
-diff -urNp linux-2.6.25.4/include/asm-arm/processor.h linux-2.6.25.4/include/asm-arm/processor.h
---- linux-2.6.25.4/include/asm-arm/processor.h 2008-05-15 11:00:12.000000000 -0400
-+++ linux-2.6.25.4/include/asm-arm/processor.h 2008-05-18 13:33:17.000000000 -0400
-@@ -23,7 +23,7 @@
- #include <asm/types.h>
-
- #ifdef __KERNEL__
--#define STACK_TOP ((current->personality == PER_LINUX_32BIT) ? \
-+#define __STACK_TOP ((current->personality == PER_LINUX_32BIT) ? \
- TASK_SIZE : TASK_SIZE_26)
- #define STACK_TOP_MAX TASK_SIZE
- #endif
diff -urNp linux-2.6.25.4/include/asm-avr32/elf.h linux-2.6.25.4/include/asm-avr32/elf.h
--- linux-2.6.25.4/include/asm-avr32/elf.h 2008-05-15 11:00:12.000000000 -0400
+++ linux-2.6.25.4/include/asm-avr32/elf.h 2008-05-18 13:33:17.000000000 -0400
};
#undef D
-diff -urNp linux-2.6.25.4/include/asm-avr32/processor.h linux-2.6.25.4/include/asm-avr32/processor.h
---- linux-2.6.25.4/include/asm-avr32/processor.h 2008-05-15 11:00:12.000000000 -0400
-+++ linux-2.6.25.4/include/asm-avr32/processor.h 2008-05-18 13:33:17.000000000 -0400
-@@ -14,8 +14,8 @@
- #define TASK_SIZE 0x80000000
-
- #ifdef __KERNEL__
--#define STACK_TOP TASK_SIZE
--#define STACK_TOP_MAX STACK_TOP
-+#define __STACK_TOP TASK_SIZE
-+#define STACK_TOP_MAX __STACK_TOP
- #endif
-
- #ifndef __ASSEMBLY__
diff -urNp linux-2.6.25.4/include/asm-blackfin/kmap_types.h linux-2.6.25.4/include/asm-blackfin/kmap_types.h
--- linux-2.6.25.4/include/asm-blackfin/kmap_types.h 2008-05-15 11:00:12.000000000 -0400
+++ linux-2.6.25.4/include/asm-blackfin/kmap_types.h 2008-05-18 13:33:17.000000000 -0400
#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 -urNp linux-2.6.25.4/include/asm-ia64/processor.h linux-2.6.25.4/include/asm-ia64/processor.h
---- linux-2.6.25.4/include/asm-ia64/processor.h 2008-05-15 11:00:12.000000000 -0400
-+++ linux-2.6.25.4/include/asm-ia64/processor.h 2008-05-18 13:33:17.000000000 -0400
-@@ -276,7 +276,7 @@ struct thread_struct {
- .on_ustack = 0, \
- .ksp = 0, \
- .map_base = DEFAULT_MAP_BASE, \
-- .rbs_bot = STACK_TOP - DEFAULT_USER_STACK_SIZE, \
-+ .rbs_bot = __STACK_TOP - DEFAULT_USER_STACK_SIZE, \
- .task_size = DEFAULT_TASK_SIZE, \
- .last_fph_cpu = -1, \
- INIT_THREAD_IA32 \
-diff -urNp linux-2.6.25.4/include/asm-ia64/ustack.h linux-2.6.25.4/include/asm-ia64/ustack.h
---- linux-2.6.25.4/include/asm-ia64/ustack.h 2008-05-15 11:00:12.000000000 -0400
-+++ linux-2.6.25.4/include/asm-ia64/ustack.h 2008-05-18 13:33:17.000000000 -0400
-@@ -10,8 +10,8 @@
-
- /* The absolute hard limit for stack size is 1/2 of the mappable space in the region */
- #define MAX_USER_STACK_SIZE (RGN_MAP_LIMIT/2)
--#define STACK_TOP (0x6000000000000000UL + RGN_MAP_LIMIT)
--#define STACK_TOP_MAX STACK_TOP
-+#define __STACK_TOP (0x6000000000000000UL + RGN_MAP_LIMIT)
-+#define STACK_TOP_MAX __STACK_TOP
- #endif
-
- /* Make a default stack size of 2GiB */
diff -urNp linux-2.6.25.4/include/asm-m32r/kmap_types.h linux-2.6.25.4/include/asm-m32r/kmap_types.h
--- linux-2.6.25.4/include/asm-m32r/kmap_types.h 2008-05-15 11:00:12.000000000 -0400
+++ linux-2.6.25.4/include/asm-m32r/kmap_types.h 2008-05-18 13:33:17.000000000 -0400
#else
typedef struct { unsigned long long pte; } pte_t;
#define pte_val(x) ((x).pte)
-diff -urNp linux-2.6.25.4/include/asm-mips/processor.h linux-2.6.25.4/include/asm-mips/processor.h
---- linux-2.6.25.4/include/asm-mips/processor.h 2008-05-15 11:00:12.000000000 -0400
-+++ linux-2.6.25.4/include/asm-mips/processor.h 2008-05-18 13:33:17.000000000 -0400
-@@ -39,7 +39,7 @@ extern unsigned int vced_count, vcei_cou
- * so don't change it unless you know what you are doing.
- */
- #define TASK_SIZE 0x7fff8000UL
--#define STACK_TOP TASK_SIZE
-+#define __STACK_TOP TASK_SIZE
-
- /*
- * This decides where the kernel will search for a free chunk of vm
-@@ -58,7 +58,7 @@ extern unsigned int vced_count, vcei_cou
- */
- #define TASK_SIZE32 0x7fff8000UL
- #define TASK_SIZE 0x10000000000UL
--#define STACK_TOP \
-+#define __STACK_TOP \
- (test_thread_flag(TIF_32BIT_ADDR) ? TASK_SIZE32 : TASK_SIZE)
-
- /*
diff -urNp linux-2.6.25.4/include/asm-mips/system.h linux-2.6.25.4/include/asm-mips/system.h
--- linux-2.6.25.4/include/asm-mips/system.h 2008-05-15 11:00:12.000000000 -0400
+++ linux-2.6.25.4/include/asm-mips/system.h 2008-05-18 13:33:17.000000000 -0400
#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 -urNp linux-2.6.25.4/include/asm-parisc/processor.h linux-2.6.25.4/include/asm-parisc/processor.h
---- linux-2.6.25.4/include/asm-parisc/processor.h 2008-05-15 11:00:12.000000000 -0400
-+++ linux-2.6.25.4/include/asm-parisc/processor.h 2008-05-18 13:33:17.000000000 -0400
-@@ -52,7 +52,7 @@
- /* XXX: STACK_TOP actually should be STACK_BOTTOM for parisc.
- * prumpf */
-
--#define STACK_TOP TASK_SIZE
-+#define __STACK_TOP TASK_SIZE
- #define STACK_TOP_MAX DEFAULT_TASK_SIZE
-
- #endif
diff -urNp linux-2.6.25.4/include/asm-powerpc/elf.h linux-2.6.25.4/include/asm-powerpc/elf.h
--- linux-2.6.25.4/include/asm-powerpc/elf.h 2008-05-15 11:00:12.000000000 -0400
+++ linux-2.6.25.4/include/asm-powerpc/elf.h 2008-05-18 13:33:17.000000000 -0400
#define VM_DATA_DEFAULT_FLAGS64 (VM_READ | VM_WRITE | \
VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
-diff -urNp linux-2.6.25.4/include/asm-powerpc/processor.h linux-2.6.25.4/include/asm-powerpc/processor.h
---- linux-2.6.25.4/include/asm-powerpc/processor.h 2008-05-15 11:00:12.000000000 -0400
-+++ linux-2.6.25.4/include/asm-powerpc/processor.h 2008-05-18 13:33:17.000000000 -0400
-@@ -119,15 +119,15 @@ extern struct task_struct *last_task_use
- #define STACK_TOP_USER64 TASK_SIZE_USER64
- #define STACK_TOP_USER32 TASK_SIZE_USER32
-
--#define STACK_TOP (test_thread_flag(TIF_32BIT) ? \
-+#define __STACK_TOP (test_thread_flag(TIF_32BIT) ? \
- STACK_TOP_USER32 : STACK_TOP_USER64)
-
- #define STACK_TOP_MAX STACK_TOP_USER64
-
- #else /* __powerpc64__ */
-
--#define STACK_TOP TASK_SIZE
--#define STACK_TOP_MAX STACK_TOP
-+#define __STACK_TOP TASK_SIZE
-+#define STACK_TOP_MAX __STACK_TOP
-
- #endif /* __powerpc64__ */
- #endif /* __KERNEL__ */
diff -urNp linux-2.6.25.4/include/asm-ppc/mmu_context.h linux-2.6.25.4/include/asm-ppc/mmu_context.h
--- linux-2.6.25.4/include/asm-ppc/mmu_context.h 2008-05-15 11:00:12.000000000 -0400
+++ linux-2.6.25.4/include/asm-ppc/mmu_context.h 2008-05-18 13:33:17.000000000 -0400
#define SRMMU_PAGE_KERNEL __pgprot(SRMMU_VALID | SRMMU_CACHE | SRMMU_PRIV | \
SRMMU_DIRTY | SRMMU_REF)
-diff -urNp linux-2.6.25.4/include/asm-sparc/processor.h linux-2.6.25.4/include/asm-sparc/processor.h
---- linux-2.6.25.4/include/asm-sparc/processor.h 2008-05-15 11:00:12.000000000 -0400
-+++ linux-2.6.25.4/include/asm-sparc/processor.h 2008-05-18 13:33:17.000000000 -0400
-@@ -34,8 +34,8 @@
- */
- #define TASK_SIZE PAGE_OFFSET
- #ifdef __KERNEL__
--#define STACK_TOP (PAGE_OFFSET - PAGE_SIZE)
--#define STACK_TOP_MAX STACK_TOP
-+#define __STACK_TOP (PAGE_OFFSET - PAGE_SIZE)
-+#define STACK_TOP_MAX __STACK_TOP
- #endif /* __KERNEL__ */
-
- struct task_struct;
-diff -urNp linux-2.6.25.4/include/asm-sparc/uaccess.h linux-2.6.25.4/include/asm-sparc/uaccess.h
---- linux-2.6.25.4/include/asm-sparc/uaccess.h 2008-05-15 11:00:12.000000000 -0400
-+++ linux-2.6.25.4/include/asm-sparc/uaccess.h 2008-05-18 13:33:17.000000000 -0400
-@@ -40,7 +40,7 @@
- * No one can read/write anything from userland in the kernel space by setting
- * large size and address near to PAGE_OFFSET - a fault will break his intentions.
- */
--#define __user_ok(addr, size) ({ (void)(size); (addr) < STACK_TOP; })
-+#define __user_ok(addr, size) ({ (void)(size); (addr) < __STACK_TOP; })
- #define __kernel_ok (segment_eq(get_fs(), KERNEL_DS))
- #define __access_ok(addr,size) (__user_ok((addr) & get_fs().seg,(size)))
- #define access_ok(type, addr, size) \
diff -urNp linux-2.6.25.4/include/asm-sparc64/elf.h linux-2.6.25.4/include/asm-sparc64/elf.h
--- linux-2.6.25.4/include/asm-sparc64/elf.h 2008-05-15 11:00:12.000000000 -0400
+++ linux-2.6.25.4/include/asm-sparc64/elf.h 2008-05-18 13:33:17.000000000 -0400
KM_TYPE_NR
};
-diff -urNp linux-2.6.25.4/include/asm-sparc64/processor.h linux-2.6.25.4/include/asm-sparc64/processor.h
---- linux-2.6.25.4/include/asm-sparc64/processor.h 2008-05-15 11:00:12.000000000 -0400
-+++ linux-2.6.25.4/include/asm-sparc64/processor.h 2008-05-18 13:33:17.000000000 -0400
-@@ -45,7 +45,7 @@
- #define STACK_TOP32 ((1UL << 32UL) - PAGE_SIZE)
- #define STACK_TOP64 (0x0000080000000000UL - (1UL << 32UL))
-
--#define STACK_TOP (test_thread_flag(TIF_32BIT) ? \
-+#define __STACK_TOP (test_thread_flag(TIF_32BIT) ? \
- STACK_TOP32 : STACK_TOP64)
-
- #define STACK_TOP_MAX STACK_TOP64
diff -urNp linux-2.6.25.4/include/asm-um/kmap_types.h linux-2.6.25.4/include/asm-um/kmap_types.h
--- linux-2.6.25.4/include/asm-um/kmap_types.h 2008-05-15 11:00:12.000000000 -0400
+++ linux-2.6.25.4/include/asm-um/kmap_types.h 2008-05-18 13:33:17.000000000 -0400
* User space process size: 3GB (default).
*/
#define TASK_SIZE (PAGE_OFFSET)
--#define STACK_TOP TASK_SIZE
--#define STACK_TOP_MAX STACK_TOP
+
+#ifdef CONFIG_PAX_SEGMEXEC
+#define SEGMEXEC_TASK_SIZE (TASK_SIZE / 2)
+#endif
+
+#ifdef CONFIG_PAX_SEGMEXEC
-+#define __STACK_TOP ((current->mm->pax_flags & MF_PAX_SEGMEXEC)?SEGMEXEC_TASK_SIZE:TASK_SIZE)
++#define STACK_TOP ((current->mm->pax_flags & MF_PAX_SEGMEXEC)?SEGMEXEC_TASK_SIZE:TASK_SIZE)
+#else
-+#define __STACK_TOP TASK_SIZE
+ #define STACK_TOP TASK_SIZE
+-#define STACK_TOP_MAX STACK_TOP
+#endif
-+#define STACK_TOP_MAX TASK_SIZE
++#define STACK_TOP_MAX TASK_SIZE
#define INIT_THREAD { \
- .sp0 = sizeof(init_stack) + (long)&init_stack, \
diff -urNp linux-2.6.25.4/include/linux/a.out.h linux-2.6.25.4/include/linux/a.out.h
--- linux-2.6.25.4/include/linux/a.out.h 2008-05-15 11:00:12.000000000 -0400
+++ linux-2.6.25.4/include/linux/a.out.h 2008-05-18 13:33:17.000000000 -0400
-@@ -9,6 +9,16 @@
-
- #include <asm/a.out.h>
-
-+#ifdef CONFIG_PAX_RANDUSTACK
-+#define __DELTA_STACK (current->mm->delta_stack)
-+#else
-+#define __DELTA_STACK 0UL
-+#endif
-+
-+#ifndef STACK_TOP
-+#define STACK_TOP (__STACK_TOP - __DELTA_STACK)
-+#endif
-+
- #endif /* __STRUCT_EXEC_OVERRIDE__ */
-
- #ifndef __ASSEMBLY__
@@ -41,6 +51,14 @@ enum machine_type {
M_MIPS2 = 152 /* MIPS R6000/R4000 binary */
};
enum system_states system_state;
EXPORT_SYMBOL(system_state);
-@@ -187,6 +188,17 @@ static int __init set_reset_devices(char
+@@ -187,6 +188,40 @@ static int __init set_reset_devices(char
__setup("reset_devices", set_reset_devices);
++#if defined(CONFIG_PAX_MEMORY_UDEREF) && defined(CONFIG_X86_32)
++static int __init setup_pax_nouderef(char *str)
++{
++ unsigned int cpu;
++
++#ifdef CONFIG_PAX_KERNEXEC
++ unsigned long cr0;
++
++ pax_open_kernel(cr0);
++#endif
++
++ for (cpu = 0; cpu < NR_CPUS; cpu++)
++ get_cpu_gdt_table(cpu)[GDT_ENTRY_KERNEL_DS].b = 0x00cf9300;
++
++#ifdef CONFIG_PAX_KERNEXEC
++ pax_close_kernel(cr0);
++#endif
++
++ return 1;
++}
++__setup("pax_nouderef", setup_pax_nouderef);
++#endif
++
+#ifdef CONFIG_PAX_SOFTMODE
+unsigned int pax_softmode;
+
/*
* These are the functions used to load ELF style executables and shared
* libraries. There is no binary dependent code anywhere else.
+@@ -515,6 +697,11 @@ static unsigned long rando
+ {
+ unsigned int random_variable = 0;
+
++#ifdef CONFIG_PAX_RANDUSTACK
++ if (randomize_va_space)
++ return stack_top - current->mm->delta_stack;
++#endif
++
+ if ((current->flags & PF_RANDOMIZE) &&
+ !(current->personality & ADDR_NO_RANDOMIZE)) {
+ random_variable = get_random_int() & STACK_RND_MASK;
@@ -533,7 +717,7 @@ static int load_elf_binary(struct linux_
unsigned long load_addr = 0, load_bias = 0;
int load_addr_set = 0;
#define PAGE_KERNEL __pgprot(_PAGE_VALID | _PAGE_ASM | _PAGE_KRE | _PAGE_KWE)
#define _PAGE_NORMAL(x) __pgprot(_PAGE_VALID | __ACCESS_BITS | (x))
-diff -urNp linux-2.6.25.4/include/asm-alpha/processor.h linux-2.6.25.4/include/asm-alpha/processor.h
---- linux-2.6.25.4/include/asm-alpha/processor.h 2008-05-15 11:00:12.000000000 -0400
-+++ linux-2.6.25.4/include/asm-alpha/processor.h 2008-05-18 13:33:17.000000000 -0400
-@@ -20,7 +20,7 @@
- */
- #define TASK_SIZE (0x40000000000UL)
-
--#define STACK_TOP \
-+#define __STACK_TOP \
- (current->personality & ADDR_LIMIT_32BIT ? 0x80000000 : 0x00120000000UL)
-
- #define STACK_TOP_MAX 0x00120000000UL
diff -urNp linux-2.6.25.4/include/asm-arm/elf.h linux-2.6.25.4/include/asm-arm/elf.h
--- linux-2.6.25.4/include/asm-arm/elf.h 2008-05-15 11:00:12.000000000 -0400
+++ linux-2.6.25.4/include/asm-arm/elf.h 2008-05-18 13:33:17.000000000 -0400
KM_TYPE_NR
};
-diff -urNp linux-2.6.25.4/include/asm-arm/processor.h linux-2.6.25.4/include/asm-arm/processor.h
---- linux-2.6.25.4/include/asm-arm/processor.h 2008-05-15 11:00:12.000000000 -0400
-+++ linux-2.6.25.4/include/asm-arm/processor.h 2008-05-18 13:33:17.000000000 -0400
-@@ -23,7 +23,7 @@
- #include <asm/types.h>
-
- #ifdef __KERNEL__
--#define STACK_TOP ((current->personality == PER_LINUX_32BIT) ? \
-+#define __STACK_TOP ((current->personality == PER_LINUX_32BIT) ? \
- TASK_SIZE : TASK_SIZE_26)
- #define STACK_TOP_MAX TASK_SIZE
- #endif
diff -urNp linux-2.6.25.4/include/asm-avr32/elf.h linux-2.6.25.4/include/asm-avr32/elf.h
--- linux-2.6.25.4/include/asm-avr32/elf.h 2008-05-15 11:00:12.000000000 -0400
+++ linux-2.6.25.4/include/asm-avr32/elf.h 2008-05-18 13:33:17.000000000 -0400
};
#undef D
-diff -urNp linux-2.6.25.4/include/asm-avr32/processor.h linux-2.6.25.4/include/asm-avr32/processor.h
---- linux-2.6.25.4/include/asm-avr32/processor.h 2008-05-15 11:00:12.000000000 -0400
-+++ linux-2.6.25.4/include/asm-avr32/processor.h 2008-05-18 13:33:17.000000000 -0400
-@@ -14,8 +14,8 @@
- #define TASK_SIZE 0x80000000
-
- #ifdef __KERNEL__
--#define STACK_TOP TASK_SIZE
--#define STACK_TOP_MAX STACK_TOP
-+#define __STACK_TOP TASK_SIZE
-+#define STACK_TOP_MAX __STACK_TOP
- #endif
-
- #ifndef __ASSEMBLY__
diff -urNp linux-2.6.25.4/include/asm-blackfin/kmap_types.h linux-2.6.25.4/include/asm-blackfin/kmap_types.h
--- linux-2.6.25.4/include/asm-blackfin/kmap_types.h 2008-05-15 11:00:12.000000000 -0400
+++ linux-2.6.25.4/include/asm-blackfin/kmap_types.h 2008-05-18 13:33:17.000000000 -0400
#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 -urNp linux-2.6.25.4/include/asm-ia64/processor.h linux-2.6.25.4/include/asm-ia64/processor.h
---- linux-2.6.25.4/include/asm-ia64/processor.h 2008-05-15 11:00:12.000000000 -0400
-+++ linux-2.6.25.4/include/asm-ia64/processor.h 2008-05-18 13:33:17.000000000 -0400
-@@ -276,7 +276,7 @@ struct thread_struct {
- .on_ustack = 0, \
- .ksp = 0, \
- .map_base = DEFAULT_MAP_BASE, \
-- .rbs_bot = STACK_TOP - DEFAULT_USER_STACK_SIZE, \
-+ .rbs_bot = __STACK_TOP - DEFAULT_USER_STACK_SIZE, \
- .task_size = DEFAULT_TASK_SIZE, \
- .last_fph_cpu = -1, \
- INIT_THREAD_IA32 \
-diff -urNp linux-2.6.25.4/include/asm-ia64/ustack.h linux-2.6.25.4/include/asm-ia64/ustack.h
---- linux-2.6.25.4/include/asm-ia64/ustack.h 2008-05-15 11:00:12.000000000 -0400
-+++ linux-2.6.25.4/include/asm-ia64/ustack.h 2008-05-18 13:33:17.000000000 -0400
-@@ -10,8 +10,8 @@
-
- /* The absolute hard limit for stack size is 1/2 of the mappable space in the region */
- #define MAX_USER_STACK_SIZE (RGN_MAP_LIMIT/2)
--#define STACK_TOP (0x6000000000000000UL + RGN_MAP_LIMIT)
--#define STACK_TOP_MAX STACK_TOP
-+#define __STACK_TOP (0x6000000000000000UL + RGN_MAP_LIMIT)
-+#define STACK_TOP_MAX __STACK_TOP
- #endif
-
- /* Make a default stack size of 2GiB */
diff -urNp linux-2.6.25.4/include/asm-m32r/kmap_types.h linux-2.6.25.4/include/asm-m32r/kmap_types.h
--- linux-2.6.25.4/include/asm-m32r/kmap_types.h 2008-05-15 11:00:12.000000000 -0400
+++ linux-2.6.25.4/include/asm-m32r/kmap_types.h 2008-05-18 13:33:17.000000000 -0400
#else
typedef struct { unsigned long long pte; } pte_t;
#define pte_val(x) ((x).pte)
-diff -urNp linux-2.6.25.4/include/asm-mips/processor.h linux-2.6.25.4/include/asm-mips/processor.h
---- linux-2.6.25.4/include/asm-mips/processor.h 2008-05-15 11:00:12.000000000 -0400
-+++ linux-2.6.25.4/include/asm-mips/processor.h 2008-05-18 13:33:17.000000000 -0400
-@@ -39,7 +39,7 @@ extern unsigned int vced_count, vcei_cou
- * so don't change it unless you know what you are doing.
- */
- #define TASK_SIZE 0x7fff8000UL
--#define STACK_TOP TASK_SIZE
-+#define __STACK_TOP TASK_SIZE
-
- /*
- * This decides where the kernel will search for a free chunk of vm
-@@ -58,7 +58,7 @@ extern unsigned int vced_count, vcei_cou
- */
- #define TASK_SIZE32 0x7fff8000UL
- #define TASK_SIZE 0x10000000000UL
--#define STACK_TOP \
-+#define __STACK_TOP \
- (test_thread_flag(TIF_32BIT_ADDR) ? TASK_SIZE32 : TASK_SIZE)
-
- /*
diff -urNp linux-2.6.25.4/include/asm-mips/system.h linux-2.6.25.4/include/asm-mips/system.h
--- linux-2.6.25.4/include/asm-mips/system.h 2008-05-15 11:00:12.000000000 -0400
+++ linux-2.6.25.4/include/asm-mips/system.h 2008-05-18 13:33:17.000000000 -0400
#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 -urNp linux-2.6.25.4/include/asm-parisc/processor.h linux-2.6.25.4/include/asm-parisc/processor.h
---- linux-2.6.25.4/include/asm-parisc/processor.h 2008-05-15 11:00:12.000000000 -0400
-+++ linux-2.6.25.4/include/asm-parisc/processor.h 2008-05-18 13:33:17.000000000 -0400
-@@ -52,7 +52,7 @@
- /* XXX: STACK_TOP actually should be STACK_BOTTOM for parisc.
- * prumpf */
-
--#define STACK_TOP TASK_SIZE
-+#define __STACK_TOP TASK_SIZE
- #define STACK_TOP_MAX DEFAULT_TASK_SIZE
-
- #endif
diff -urNp linux-2.6.25.4/include/asm-powerpc/elf.h linux-2.6.25.4/include/asm-powerpc/elf.h
--- linux-2.6.25.4/include/asm-powerpc/elf.h 2008-05-15 11:00:12.000000000 -0400
+++ linux-2.6.25.4/include/asm-powerpc/elf.h 2008-05-18 13:33:17.000000000 -0400
#define VM_DATA_DEFAULT_FLAGS64 (VM_READ | VM_WRITE | \
VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
-diff -urNp linux-2.6.25.4/include/asm-powerpc/processor.h linux-2.6.25.4/include/asm-powerpc/processor.h
---- linux-2.6.25.4/include/asm-powerpc/processor.h 2008-05-15 11:00:12.000000000 -0400
-+++ linux-2.6.25.4/include/asm-powerpc/processor.h 2008-05-18 13:33:17.000000000 -0400
-@@ -119,15 +119,15 @@ extern struct task_struct *last_task_use
- #define STACK_TOP_USER64 TASK_SIZE_USER64
- #define STACK_TOP_USER32 TASK_SIZE_USER32
-
--#define STACK_TOP (test_thread_flag(TIF_32BIT) ? \
-+#define __STACK_TOP (test_thread_flag(TIF_32BIT) ? \
- STACK_TOP_USER32 : STACK_TOP_USER64)
-
- #define STACK_TOP_MAX STACK_TOP_USER64
-
- #else /* __powerpc64__ */
-
--#define STACK_TOP TASK_SIZE
--#define STACK_TOP_MAX STACK_TOP
-+#define __STACK_TOP TASK_SIZE
-+#define STACK_TOP_MAX __STACK_TOP
-
- #endif /* __powerpc64__ */
- #endif /* __KERNEL__ */
diff -urNp linux-2.6.25.4/include/asm-ppc/mmu_context.h linux-2.6.25.4/include/asm-ppc/mmu_context.h
--- linux-2.6.25.4/include/asm-ppc/mmu_context.h 2008-05-15 11:00:12.000000000 -0400
+++ linux-2.6.25.4/include/asm-ppc/mmu_context.h 2008-05-18 13:33:17.000000000 -0400
#define SRMMU_PAGE_KERNEL __pgprot(SRMMU_VALID | SRMMU_CACHE | SRMMU_PRIV | \
SRMMU_DIRTY | SRMMU_REF)
-diff -urNp linux-2.6.25.4/include/asm-sparc/processor.h linux-2.6.25.4/include/asm-sparc/processor.h
---- linux-2.6.25.4/include/asm-sparc/processor.h 2008-05-15 11:00:12.000000000 -0400
-+++ linux-2.6.25.4/include/asm-sparc/processor.h 2008-05-18 13:33:17.000000000 -0400
-@@ -34,8 +34,8 @@
- */
- #define TASK_SIZE PAGE_OFFSET
- #ifdef __KERNEL__
--#define STACK_TOP (PAGE_OFFSET - PAGE_SIZE)
--#define STACK_TOP_MAX STACK_TOP
-+#define __STACK_TOP (PAGE_OFFSET - PAGE_SIZE)
-+#define STACK_TOP_MAX __STACK_TOP
- #endif /* __KERNEL__ */
-
- struct task_struct;
-diff -urNp linux-2.6.25.4/include/asm-sparc/uaccess.h linux-2.6.25.4/include/asm-sparc/uaccess.h
---- linux-2.6.25.4/include/asm-sparc/uaccess.h 2008-05-15 11:00:12.000000000 -0400
-+++ linux-2.6.25.4/include/asm-sparc/uaccess.h 2008-05-18 13:33:17.000000000 -0400
-@@ -40,7 +40,7 @@
- * No one can read/write anything from userland in the kernel space by setting
- * large size and address near to PAGE_OFFSET - a fault will break his intentions.
- */
--#define __user_ok(addr, size) ({ (void)(size); (addr) < STACK_TOP; })
-+#define __user_ok(addr, size) ({ (void)(size); (addr) < __STACK_TOP; })
- #define __kernel_ok (segment_eq(get_fs(), KERNEL_DS))
- #define __access_ok(addr,size) (__user_ok((addr) & get_fs().seg,(size)))
- #define access_ok(type, addr, size) \
diff -urNp linux-2.6.25.4/include/asm-sparc64/elf.h linux-2.6.25.4/include/asm-sparc64/elf.h
--- linux-2.6.25.4/include/asm-sparc64/elf.h 2008-05-15 11:00:12.000000000 -0400
+++ linux-2.6.25.4/include/asm-sparc64/elf.h 2008-05-18 13:33:17.000000000 -0400
KM_TYPE_NR
};
-diff -urNp linux-2.6.25.4/include/asm-sparc64/processor.h linux-2.6.25.4/include/asm-sparc64/processor.h
---- linux-2.6.25.4/include/asm-sparc64/processor.h 2008-05-15 11:00:12.000000000 -0400
-+++ linux-2.6.25.4/include/asm-sparc64/processor.h 2008-05-18 13:33:17.000000000 -0400
-@@ -45,7 +45,7 @@
- #define STACK_TOP32 ((1UL << 32UL) - PAGE_SIZE)
- #define STACK_TOP64 (0x0000080000000000UL - (1UL << 32UL))
-
--#define STACK_TOP (test_thread_flag(TIF_32BIT) ? \
-+#define __STACK_TOP (test_thread_flag(TIF_32BIT) ? \
- STACK_TOP32 : STACK_TOP64)
-
- #define STACK_TOP_MAX STACK_TOP64
diff -urNp linux-2.6.25.4/include/asm-um/kmap_types.h linux-2.6.25.4/include/asm-um/kmap_types.h
--- linux-2.6.25.4/include/asm-um/kmap_types.h 2008-05-15 11:00:12.000000000 -0400
+++ linux-2.6.25.4/include/asm-um/kmap_types.h 2008-05-18 13:33:17.000000000 -0400
* User space process size: 3GB (default).
*/
#define TASK_SIZE (PAGE_OFFSET)
--#define STACK_TOP TASK_SIZE
--#define STACK_TOP_MAX STACK_TOP
+
+#ifdef CONFIG_PAX_SEGMEXEC
+#define SEGMEXEC_TASK_SIZE (TASK_SIZE / 2)
+#endif
+
+#ifdef CONFIG_PAX_SEGMEXEC
-+#define __STACK_TOP ((current->mm->pax_flags & MF_PAX_SEGMEXEC)?SEGMEXEC_TASK_SIZE:TASK_SIZE)
++#define STACK_TOP ((current->mm->pax_flags & MF_PAX_SEGMEXEC)?SEGMEXEC_TASK_SIZE:TASK_SIZE)
+#else
-+#define __STACK_TOP TASK_SIZE
+ #define STACK_TOP TASK_SIZE
+-#define STACK_TOP_MAX STACK_TOP
+#endif
-+#define STACK_TOP_MAX TASK_SIZE
++#define STACK_TOP_MAX TASK_SIZE
#define INIT_THREAD { \
- .sp0 = sizeof(init_stack) + (long)&init_stack, \
diff -urNp linux-2.6.25.4/include/linux/a.out.h linux-2.6.25.4/include/linux/a.out.h
--- linux-2.6.25.4/include/linux/a.out.h 2008-05-15 11:00:12.000000000 -0400
+++ linux-2.6.25.4/include/linux/a.out.h 2008-05-18 13:33:17.000000000 -0400
-@@ -9,6 +9,16 @@
-
- #include <asm/a.out.h>
-
-+#ifdef CONFIG_PAX_RANDUSTACK
-+#define __DELTA_STACK (current->mm->delta_stack)
-+#else
-+#define __DELTA_STACK 0UL
-+#endif
-+
-+#ifndef STACK_TOP
-+#define STACK_TOP (__STACK_TOP - __DELTA_STACK)
-+#endif
-+
- #endif /* __STRUCT_EXEC_OVERRIDE__ */
-
- #ifndef __ASSEMBLY__
@@ -41,6 +51,14 @@ enum machine_type {
M_MIPS2 = 152 /* MIPS R6000/R4000 binary */
};
enum system_states system_state;
EXPORT_SYMBOL(system_state);
-@@ -187,6 +188,17 @@ static int __init set_reset_devices(char
+@@ -187,6 +188,40 @@ static int __init set_reset_devices(char
__setup("reset_devices", set_reset_devices);
++#if defined(CONFIG_PAX_MEMORY_UDEREF) && defined(CONFIG_X86_32)
++static int __init setup_pax_nouderef(char *str)
++{
++ unsigned int cpu;
++
++#ifdef CONFIG_PAX_KERNEXEC
++ unsigned long cr0;
++
++ pax_open_kernel(cr0);
++#endif
++
++ for (cpu = 0; cpu < NR_CPUS; cpu++)
++ get_cpu_gdt_table(cpu)[GDT_ENTRY_KERNEL_DS].b = 0x00cf9300;
++
++#ifdef CONFIG_PAX_KERNEXEC
++ pax_close_kernel(cr0);
++#endif
++
++ return 1;
++}
++__setup("pax_nouderef", setup_pax_nouderef);
++#endif
++
+#ifdef CONFIG_PAX_SOFTMODE
+unsigned int pax_softmode;
+
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