diff options
| -rw-r--r-- | arch/arm/include/asm/elf.h | 3 | ||||
| -rw-r--r-- | arch/arm/kernel/process.c | 7 |
2 files changed, 10 insertions, 0 deletions
diff --git a/arch/arm/include/asm/elf.h b/arch/arm/include/asm/elf.h index 51662feb9f1d..0a96e8c1b82a 100644 --- a/arch/arm/include/asm/elf.h +++ b/arch/arm/include/asm/elf.h @@ -121,4 +121,7 @@ int dump_task_regs(struct task_struct *t, elf_gregset_t *elfregs); extern void elf_set_personality(const struct elf32_hdr *); #define SET_PERSONALITY(ex) elf_set_personality(&(ex)) +extern unsigned long arch_randomize_brk(struct mm_struct *mm); +#define arch_randomize_brk arch_randomize_brk + #endif diff --git a/arch/arm/kernel/process.c b/arch/arm/kernel/process.c index acf5e6fdb6dc..1c6eb7ed9642 100644 --- a/arch/arm/kernel/process.c +++ b/arch/arm/kernel/process.c @@ -28,6 +28,7 @@ #include <linux/tick.h> #include <linux/utsname.h> #include <linux/uaccess.h> +#include <linux/random.h> #include <asm/leds.h> #include <asm/processor.h> @@ -421,3 +422,9 @@ unsigned long get_wchan(struct task_struct *p) } 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; +} |