Commit-ID: 5ea30e4e58040cfd6434c2f33dc3ea76e2c15b05 Gitweb: http://git.kernel.org/tip/5ea30e4e58040cfd6434c2f33dc3ea76e2c15b05 Author: Daniel Micay <[email protected]> AuthorDate: Thu, 4 May 2017 09:32:09 -0400 Committer: Ingo Molnar <[email protected]> CommitDate: Fri, 5 May 2017 08:05:13 +0200
stackprotector: Increase the per-task stack canary's random range from 32 bits to 64 bits on 64-bit platforms The stack canary is an 'unsigned long' and should be fully initialized to random data rather than only 32 bits of random data. Signed-off-by: Daniel Micay <[email protected]> Acked-by: Arjan van de Ven <[email protected]> Acked-by: Rik van Riel <[email protected]> Acked-by: Kees Cook <[email protected]> Cc: Arjan van Ven <[email protected]> Cc: Linus Torvalds <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Thomas Gleixner <[email protected]> Cc: [email protected] Cc: [email protected] Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Ingo Molnar <[email protected]> --- kernel/fork.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/fork.c b/kernel/fork.c index 3a4343c..d681f8f 100644 --- a/kernel/fork.c +++ b/kernel/fork.c @@ -536,7 +536,7 @@ static struct task_struct *dup_task_struct(struct task_struct *orig, int node) set_task_stack_end_magic(tsk); #ifdef CONFIG_CC_STACKPROTECTOR - tsk->stack_canary = get_random_int(); + tsk->stack_canary = get_random_long(); #endif /*
