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lock debug: sit tight when we are already in a panic 

in:

  > http://bugzilla.kernel.org/show_bug.cgi?id=11543

The panic code called the kexec code which called mutex_trylock() which
called spin_lock_mutex() which then stupidly went and blurted a load of
debug stuff because of in_interrupt().

Keep the lock debug code from escallating an already crappy situation.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Andrew Morton 2008-09-11 17:02:58 -07:00 committed by Ingo Molnar
parent 1d18ef4895
commit 53b9d87f41
1 changed files with 1 additions and 1 deletions
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2
include/linux/debug_locks.h
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@ -17,7 +17,7 @@ extern int debug_locks_off(void);
({ \
int __ret = 0; \
\
if (unlikely(c)) { \
if (!oops_in_progress && unlikely(c)) { \
if (debug_locks_off() && !debug_locks_silent) \
WARN_ON(1); \
__ret = 1; \