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[PATCH] i386/x86-64: Don't randomize stack top when no randomization personality is set

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Based on patch from Frank van Maarseveen <frankvm@frankvm.com>, but
extended.

Signed-off-by: Andi Kleen <ak@suse.de>
This commit is contained in:
Andi Kleen
2006-09-26 10:52:28 +02:00
committed by Andi Kleen
parent d5d9ca6d88
commit c16b63e09d
3 changed files with 5 additions and 3 deletions
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3
fs/binfmt_elf.c
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@@ -515,7 +515,8 @@ static unsigned long randomize_stack_top(unsigned long stack_top)
{
unsigned int random_variable = 0;
if (current->flags & PF_RANDOMIZE) {
if ((current->flags & PF_RANDOMIZE) &&
!(current->personality & ADDR_NO_RANDOMIZE)) {
random_variable = get_random_int() & STACK_RND_MASK;
random_variable <<= PAGE_SHIFT;
}