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a63b03e2d2
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> |
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.. | ||
lglock.c | ||
lockdep_internals.h | ||
lockdep_proc.c | ||
lockdep_states.h | ||
lockdep.c | ||
locktorture.c | ||
Makefile | ||
mcs_spinlock.c | ||
mcs_spinlock.h | ||
mutex-debug.c | ||
mutex-debug.h | ||
mutex.c | ||
mutex.h | ||
percpu-rwsem.c | ||
qrwlock.c | ||
rtmutex_common.h | ||
rtmutex-debug.c | ||
rtmutex-debug.h | ||
rtmutex-tester.c | ||
rtmutex.c | ||
rtmutex.h | ||
rwsem-spinlock.c | ||
rwsem-xadd.c | ||
rwsem.c | ||
semaphore.c | ||
spinlock_debug.c | ||
spinlock.c |