Messages in this thread Patch in this message | | | Date | Tue, 11 Jul 2006 17:22:02 +0200 | From | Frank van Maarseveen <> | Subject | [PATCH] x86: Don't randomize stack unless current->personality permits it |
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Do not randomize stack location unless current->personality permits it.
Signed-off-by: Frank van Maarseveen <frankvm@frankvm.com> ---
The problem seems also present in
arch/um/kernel/process_kern.c arch/x86_64/kernel/process.c
arch/i386/kernel/process.c | 3 ++- 1 files changed, 2 insertions(+), 1 deletion(-)
diff -rup a/arch/i386/kernel/process.c b/arch/i386/kernel/process.c --- a/arch/i386/kernel/process.c 2006-06-23 16:08:13.000000000 +0200 +++ b/arch/i386/kernel/process.c 2006-07-11 14:39:20.000000000 +0200 @@ -38,6 +38,7 @@ #include <linux/kallsyms.h> #include <linux/ptrace.h> #include <linux/random.h> +#include <linux/personality.h> #include <asm/uaccess.h> #include <asm/pgtable.h> @@ -898,7 +899,7 @@ asmlinkage int sys_get_thread_area(struc 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; } - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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