Commit 517a92c4 authored by Ingo Molnar's avatar Ingo Molnar Committed by Thomas Gleixner
Browse files

panic: print more informative messages on stackprotect failure 



pointed out by pageexec@freemail.hu:

we just simply panic() when there's a stackprotector attack - giving
the attacked person no information about what kernel code the attack went
against.

print out the attacked function.

Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
parent 7e09b2a0

kernel/panic.c

+2 −1
Original line number Diff line number Diff line
@@ -327,7 +327,8 @@ EXPORT_SYMBOL(warn_on_slowpath); 
 */

void __stack_chk_fail(void)

{

	panic("stack-protector: Kernel stack is corrupted");

	panic("stack-protector: Kernel stack is corrupted in: %p\n",

		__builtin_return_address(0));

}

EXPORT_SYMBOL(__stack_chk_fail);

#endif