diff options
| author | Andi Kleen <ak@suse.de> | 2006-09-26 10:52:28 +0200 |
|---|---|---|
| committer | Andi Kleen <andi@basil.nowhere.org> | 2006-09-26 10:52:28 +0200 |
| commit | c16b63e09d9d03158e0a92e961234e94c4862620 (patch) | |
| tree | 154c9b5e082bf0633482be6c33c973cc35c602d8 /arch | |
| parent | d5d9ca6d882f7c8d47ef91a701fc042cbebbc334 (diff) | |
| download | blackbird-op-linux-c16b63e09d9d03158e0a92e961234e94c4862620.tar.gz blackbird-op-linux-c16b63e09d9d03158e0a92e961234e94c4862620.zip | |
[PATCH] i386/x86-64: Don't randomize stack top when no randomization personality is set
Based on patch from Frank van Maarseveen <frankvm@frankvm.com>, but
extended.
Signed-off-by: Andi Kleen <ak@suse.de>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/i386/kernel/process.c | 3 | ||||
| -rw-r--r-- | arch/x86_64/kernel/process.c | 2 |
2 files changed, 3 insertions, 2 deletions
diff --git a/arch/i386/kernel/process.c b/arch/i386/kernel/process.c index 8657c739656a..b741c3e1a5eb 100644 --- a/arch/i386/kernel/process.c +++ b/arch/i386/kernel/process.c @@ -37,6 +37,7 @@ #include <linux/kallsyms.h> #include <linux/ptrace.h> #include <linux/random.h> +#include <linux/personality.h> #include <asm/uaccess.h> #include <asm/pgtable.h> @@ -905,7 +906,7 @@ asmlinkage int sys_get_thread_area(struct user_desc __user *u_info) unsigned long arch_align_stack(unsigned long sp) { - if (randomize_va_space) + if (!(current->personality & ADDR_NO_RANDOMIZE) && randomize_va_space) sp -= get_random_int() % 8192; return sp & ~0xf; } diff --git a/arch/x86_64/kernel/process.c b/arch/x86_64/kernel/process.c index 6e0527635b4c..6fbd19564e4e 100644 --- a/arch/x86_64/kernel/process.c +++ b/arch/x86_64/kernel/process.c @@ -845,7 +845,7 @@ int dump_task_regs(struct task_struct *tsk, elf_gregset_t *regs) unsigned long arch_align_stack(unsigned long sp) { - if (randomize_va_space) + if (!(current->personality & ADDR_NO_RANDOMIZE) && randomize_va_space) sp -= get_random_int() % 8192; return sp & ~0xf; } |
