Commit 5cb27301 authored by Ingo Molnar's avatar Ingo Molnar Committed by Thomas Gleixner
Browse files

panic: print out stacktrace if DEBUG_BUGVERBOSE 



if CONFIG_DEBUG_BUGVERBOSE is set then the user most definitely wanted
to see as much information about kernel crashes as possible - so give
them at least a stack dump.

this is particularly useful for stackprotector related panics, where
the stacktrace can give us the exact location of the (attempted)
attack.

Pointed out by pageexec@freemail.hu in the stackprotector breakage
threads.

Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
parent 517a92c4

kernel/panic.c

+3 −0
Original line number Diff line number Diff line
@@ -80,6 +80,9 @@ NORET_TYPE void panic(const char * fmt, ...) 
	vsnprintf(buf, sizeof(buf), fmt, args);

	va_end(args);

	printk(KERN_EMERG "Kernel panic - not syncing: %s\n",buf);

#ifdef CONFIG_DEBUG_BUGVERBOSE

	dump_stack();

#endif

	bust_spinlocks(0);



	/*