Sebastian Andrzej Siewior 6c11c6e3d5 locking/mutex: Test for initialized mutex ...

An uninitialized/ zeroed mutex will go unnoticed because there is no
check for it. There is a magic check in the unlock's slowpath path which
might go unnoticed if the unlock happens in the fastpath.

Add a ->magic check early in the mutex_lock() and mutex_trylock() path.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Will Deacon <will@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/20190703092125.lsdf4gpsh2plhavb@linutronix.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>

2019-07-25 15:39:27 +02:00

..

lock_events_list.h

locking/rwsem: Adaptive disabling of reader optimistic spinning

2019-06-17 12:28:09 +02:00

lock_events.c

locking/lock_events: Don't show pvqspinlock events on bare metal

2019-04-10 10:56:05 +02:00

lock_events.h

locking/lock_events: Use raw_cpu_{add,inc}() for stats

2019-06-03 12:32:56 +02:00

lockdep_internals.h

locking/lockdep: increase size of counters for lockdep statistics

2019-06-25 10:17:08 +02:00

lockdep_proc.c

locking/lockdep: Hide unused 'class' variable

2019-07-25 15:39:25 +02:00

lockdep_states.h

locking/lockdep: Rework FS_RECLAIM annotation

2017-08-10 12:29:03 +02:00

lockdep.c

locking/lockdep: Clean up #ifdef checks

2019-07-25 15:39:26 +02:00

locktorture.c

torture: Allow inter-stutter interval to be specified

2019-05-28 09:06:09 -07:00

Makefile

locking/rwsem: Merge rwsem.h and rwsem-xadd.c into rwsem.c

2019-06-17 12:27:57 +02:00

mcs_spinlock.h

locking/mcs: Use smp_cond_load_acquire() in MCS spin loop

2018-04-27 09:48:49 +02:00

mutex-debug.c

locking/mutex: Replace spin_is_locked() with lockdep

2018-11-12 09:06:22 -08:00

mutex-debug.h

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

mutex.c

locking/mutex: Test for initialized mutex

2019-07-25 15:39:27 +02:00

mutex.h

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

osq_lock.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

percpu-rwsem.c

Merge branch 'for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu into core/rcu

2019-06-28 19:46:47 +02:00

qrwlock.c

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157

2019-05-30 11:26:37 -07:00

qspinlock_paravirt.h

locking/qspinlock_stat: Introduce generic lockevent_*() counting APIs

2019-04-10 10:56:03 +02:00

qspinlock_stat.h

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157

2019-05-30 11:26:37 -07:00

qspinlock.c

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157

2019-05-30 11:26:37 -07:00

rtmutex_common.h

locking/rtmutex: Handle non enqueued waiters gracefully in remove_waiter()

2018-03-28 23:01:30 +02:00

rtmutex-debug.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

rtmutex-debug.h

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

rtmutex.c

docs: locking: convert docs to ReST and rename to *.rst

2019-07-15 08:53:27 -03:00

rtmutex.h

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

rwsem.c

locking/rwsem: Add ACQUIRE comments

2019-07-25 15:39:25 +02:00

rwsem.h

locking/rwsem: Merge rwsem.h and rwsem-xadd.c into rwsem.c

2019-06-17 12:27:57 +02:00

semaphore.c

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 436

2019-06-05 17:37:17 +02:00

spinlock_debug.c

mmiowb: Hook up mmiowb helpers to spinlocks and generic I/O accessors

2019-04-08 11:59:47 +01:00

spinlock.c

asm-generic/mmiowb: Add generic implementation of mmiowb() tracking

2019-04-08 11:59:39 +01:00

test-ww_mutex.c

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 9

2019-05-21 11:28:40 +02:00