From: Andrew Morton Date: Fri, 12 Sep 2008 00:02:58 +0000 (-0700) Subject: lock debug: sit tight when we are already in a panic X-Git-Tag: firefly_0821_release~15189^2~44^3~16 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=53b9d87f41a3d8838210ad7cdef02d814817ce85;p=firefly-linux-kernel-4.4.55.git 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 --- diff --git a/include/linux/debug_locks.h b/include/linux/debug_locks.h index 4aaa4afb1cb9..096476f1fb35 100644 --- a/include/linux/debug_locks.h +++ b/include/linux/debug_locks.h @@ -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; \