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| author | Ingo Molnar <mingo@elte.hu> | 2008-02-14 09:07:01 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2008-05-26 16:15:32 +0200 |
| commit | 5cb273013e182a35e7db614d3e20a144cba71e53 (patch) | |
| tree | f027f389e3d9d2ab9750fdc81399f6c5df385fb2 /kernel/panic.c | |
| parent | 517a92c4e19fcea815332d3155e9fb7723251274 (diff) | |
| download | lwn-5cb273013e182a35e7db614d3e20a144cba71e53.tar.gz lwn-5cb273013e182a35e7db614d3e20a144cba71e53.zip | |
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: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'kernel/panic.c')
| -rw-r--r-- | kernel/panic.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/kernel/panic.c b/kernel/panic.c index f236001cc4db..17aad578a2f2 100644 --- a/kernel/panic.c +++ b/kernel/panic.c @@ -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); /* |