Chris Wilson a63b03e2d2 mutex: Always clear owner field upon mutex_unlock() ... Currently if DEBUG_MUTEXES is enabled, the mutex->owner field is only cleared iff debug_locks is active. This exposes a race to other users of the field where the mutex->owner may be still set to a stale value, potentially upsetting mutex_spin_on_owner() among others. References: https://bugs.freedesktop.org/show_bug.cgi?id=87955 Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Acked-by: Davidlohr Bueso <dave@stgolabs.net> Cc: Daniel Vetter <daniel.vetter@ffwll.ch> Cc: Linus Torvalds <torvalds@linux-foundation.org> Link: http://lkml.kernel.org/r/1420540175-30204-1-git-send-email-chris@chris-wilson.co.uk Signed-off-by: Ingo Molnar <mingo@kernel.org>		2015-01-09 11:20:39 +01:00
..
lglock.c
lockdep_internals.h
lockdep_proc.c
lockdep_states.h
lockdep.c	locking/lockdep: Revert qrwlock recusive stuff	2014-10-03 06:09:30 +02:00
locktorture.c	locktorture: Cleanup header usage	2014-09-30 00:10:02 -07:00
Makefile
mcs_spinlock.c	arch, locking: Ciao arch_mutex_cpu_relax()	2014-07-17 12:32:47 +02:00
mcs_spinlock.h	locking/mcs: Remove obsolete comment	2014-08-13 10:32:00 +02:00
mutex-debug.c	mutex: Always clear owner field upon mutex_unlock()	2015-01-09 11:20:39 +01:00
mutex-debug.h
mutex.c	locking/mutex: Don't assume TASK_RUNNING	2014-10-28 10:55:08 +01:00
mutex.h	locking/mutexes: Use MUTEX_SPIN_ON_OWNER when appropriate	2014-08-13 10:32:02 +02:00
percpu-rwsem.c
qrwlock.c	arch, locking: Ciao arch_mutex_cpu_relax()	2014-07-17 12:32:47 +02:00
rtmutex_common.h
rtmutex-debug.c
rtmutex-debug.h
rtmutex-tester.c
rtmutex.c	locking/Documentation: Move locking related docs into Documentation/locking/	2014-08-13 10:32:03 +02:00
rtmutex.h
rwsem-spinlock.c
rwsem-xadd.c	locking/rwsem: Avoid double checking before try acquiring write lock	2014-10-03 06:09:29 +02:00
rwsem.c
semaphore.c	locking/semaphore: Resolve some shadow warnings	2014-09-04 07:17:24 +02:00
spinlock_debug.c
spinlock.c