Peter Zijlstra 21199f27b4 locking/lockdep: Fix hlock->pin_count reset on lock stack rebuilds ...

Various people reported hitting the "unpinning an unpinned lock"
warning. As it turns out there are 2 places where we take a lock out
of the middle of a stack, and in those cases it would fail to preserve
the pin_count when rebuilding the lock stack.

Reported-by: Sasha Levin <sasha.levin@oracle.com>
Reported-by: Tim Spriggs <tspriggs@apple.com>
Tested-by: Sasha Levin <sasha.levin@oracle.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: davej@codemonkey.org.uk
Link: http://lkml.kernel.org/r/20150916141040.GA11639@twins.programming.kicks-ass.net
Signed-off-by: Ingo Molnar <mingo@kernel.org>

2015-09-23 09:48:53 +02:00

..

lglock.c

sched/stop_machine: Fix deadlock between multiple stop_two_cpus()

2015-06-19 10:03:12 +02:00

lockdep_internals.h

lockdep: Increase static allocations

2014-04-18 14:20:50 +02:00

lockdep_proc.c

lockdep: Fix a race between /proc/lock_stat and module unload

2015-06-07 15:46:30 +02:00

lockdep_states.h

locking: Move the lockdep code to kernel/locking/

2013-11-06 07:55:08 +01:00

lockdep.c

locking/lockdep: Fix hlock->pin_count reset on lock stack rebuilds

2015-09-23 09:48:53 +02:00

locktorture.c

locktorture: Change longdelay_us to longdelay_ms

2015-05-27 12:59:57 -07:00

Makefile

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2015-09-05 20:34:28 -07:00

mcs_spinlock.h

locking/qspinlock: Introduce a simple generic 4-byte queued spinlock

2015-05-08 12:36:25 +02:00

mutex-debug.c

mutex: Always clear owner field upon mutex_unlock()

2015-01-09 11:20:39 +01:00

mutex-debug.h

locking: Move the mutex code to kernel/locking/

2013-11-06 07:55:07 +01:00

mutex.c

locking/mutex: Further simplify mutex_spin_on_owner()

2015-04-09 08:10:23 +02:00

mutex.h

locking/mutexes: Use MUTEX_SPIN_ON_OWNER when appropriate

2014-08-13 10:32:02 +02:00

osq_lock.c

locking: Remove ACCESS_ONCE() usage

2015-02-24 08:44:16 +01:00

percpu-rwsem.c

percpu-rwsem: introduce percpu_down_read_trylock()

2015-08-15 13:52:10 +02:00

qrwlock.c

locking/qrwlock: Make use of _{acquire|release|relaxed}() atomics

2015-08-12 11:59:06 +02:00

qspinlock_paravirt.h

locking/pvqspinlock: Only kick CPU at unlock time

2015-08-03 10:57:11 +02:00

qspinlock.c

locking/qspinlock/x86: Fix performance regression under unaccelerated VMs

2015-09-11 07:49:42 +02:00

rtmutex_common.h

rtmutex: Delete scriptable tester

2015-07-20 11:45:45 +02:00

rtmutex-debug.c

rtmutex: Cleanup deadlock detector debug logic

2014-06-21 22:05:30 +02:00

rtmutex-debug.h

rtmutex: Cleanup deadlock detector debug logic

2014-06-21 22:05:30 +02:00

rtmutex.c

rtmutex: Delete scriptable tester

2015-07-20 11:45:45 +02:00

rtmutex.h

rtmutex: Cleanup deadlock detector debug logic

2014-06-21 22:05:30 +02:00

rwsem-spinlock.c

locking/rwsem: Document barrier need when waking tasks

2015-02-18 16:57:10 +01:00

rwsem-xadd.c

locking/rwsem: Reduce spinlock contention in wakeup after up_read()/up_write()

2015-05-08 12:27:59 +02:00

rwsem.c

locking/rwsem: Set lock ownership ASAP

2015-02-18 16:57:13 +01:00

rwsem.h

locking/rwsem: Set lock ownership ASAP

2015-02-18 16:57:13 +01:00

semaphore.c

locking/semaphore: Resolve some shadow warnings

2014-09-04 07:17:24 +02:00

spinlock_debug.c

locking: Move the spinlock code to kernel/locking/

2013-11-06 07:55:21 +01:00

spinlock.c

spinlock: Add spin_lock_bh_nested()

2015-01-03 14:32:57 -05:00