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authorAndi Kleen <ak@suse.de>2006-09-26 10:52:28 +0200
committerAndi Kleen <andi@basil.nowhere.org>2006-09-26 10:52:28 +0200
commitc16b63e09d9d03158e0a92e961234e94c4862620 (patch)
tree154c9b5e082bf0633482be6c33c973cc35c602d8 /fs/binfmt_elf.c
parentd5d9ca6d882f7c8d47ef91a701fc042cbebbc334 (diff)
downloadop-kernel-dev-c16b63e09d9d03158e0a92e961234e94c4862620.zip
op-kernel-dev-c16b63e09d9d03158e0a92e961234e94c4862620.tar.gz
[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 'fs/binfmt_elf.c')
-rw-r--r--fs/binfmt_elf.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/binfmt_elf.c b/fs/binfmt_elf.c
index 672a3b9..5109dbf 100644
--- a/fs/binfmt_elf.c
+++ b/fs/binfmt_elf.c
@@ -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;
}
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