Commit-ID: 5ea30e4e58040cfd6434c2f33dc3ea76e2c15b05 Gitweb: http://git.kernel.org/tip/5ea30e4e58040cfd6434c2f33dc3ea76e2c15b05 Author: Daniel Micay <danielmicay@xxxxxxxxx> AuthorDate: Thu, 4 May 2017 09:32:09 -0400 Committer: Ingo Molnar <mingo@xxxxxxxxxx> 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 <danielmicay@xxxxxxxxx> Acked-by: Arjan van de Ven <arjan@xxxxxxxxxxxxxxx> Acked-by: Rik van Riel <riel@xxxxxxxxxx> Acked-by: Kees Cook <keescook@xxxxxxxxxxxx> Cc: Arjan van Ven <arjan@xxxxxxxxxxxxxxx> Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx> Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx> Cc: kernel-hardening@xxxxxxxxxxxxxxxxxx Cc: stable@xxxxxxxxxxxxxxx Link: http://lkml.kernel.org/r/20170504133209.3053-1-danielmicay@xxxxxxxxx Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx> --- 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 /* -- To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
|