Roland Xu 85f03ca98e rtmutex: Drop rt_mutex::wait_lock before scheduling ... commit d33d26036a upstream. rt_mutex_handle_deadlock() is called with rt_mutex::wait_lock held. In the good case it returns with the lock held and in the deadlock case it emits a warning and goes into an endless scheduling loop with the lock held, which triggers the 'scheduling in atomic' warning. Unlock rt_mutex::wait_lock in the dead lock case before issuing the warning and dropping into the schedule for ever loop. [ tglx: Moved unlock before the WARN(), removed the pointless comment, massaged changelog, added Fixes tag ] Fixes: 3d5c9340d1 ("rtmutex: Handle deadlock detection smarter") Signed-off-by: Roland Xu <mu001999@outlook.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: stable@vger.kernel.org Link: https://lore.kernel.org/all/ME0P300MB063599BEF0743B8FA339C2CECC802@ME0P300MB0635.AUSP300.PROD.OUTLOOK.COM Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2024-09-12 11:11:25 +02:00
..
irqflag-debug.c
lock_events_list.h
lock_events.c
lock_events.h	locking: add lockevent_read() prototype	2023-06-09 17:44:15 -07:00
lockdep_internals.h
lockdep_proc.c
lockdep_states.h
lockdep.c	lockdep: Fix block chain corruption	2023-12-03 07:33:06 +01:00
locktorture.c	torture: Add lock_torture writer_fifo module parameter	2023-08-14 15:01:07 -07:00
Makefile
mcs_spinlock.h
mutex-debug.c	locking/mutex: Introduce devm_mutex_init()	2024-07-11 12:49:02 +02:00
mutex.c
mutex.h
osq_lock.c
percpu-rwsem.c
qrwlock.c
qspinlock_paravirt.h	x86/qspinlock-paravirt: Fix missing-prototype warning	2023-08-03 17:15:05 +02:00
qspinlock_stat.h
qspinlock.c	locking/qspinlock: Micro-optimize pending state waiting for unlock	2023-01-05 11:01:50 +01:00
rtmutex_api.c	locking/rtmutex: Fix task->pi_waiters integrity	2023-07-17 13:59:10 +02:00
rtmutex_common.h	locking/rtmutex: Fix task->pi_waiters integrity	2023-07-17 13:59:10 +02:00
rtmutex.c	rtmutex: Drop rt_mutex::wait_lock before scheduling	2024-09-12 11:11:25 +02:00
rwbase_rt.c	locking/rwbase: Mitigate indefinite writer starvation	2023-04-29 09:08:52 +02:00
rwsem.c	locking/rwsem: Add __always_inline annotation to __down_write_common() and inlined callers	2024-08-03 08:53:42 +02:00
semaphore.c
spinlock_debug.c
spinlock_rt.c
spinlock.c
test-ww_mutex.c	locking/ww_mutex/test: Fix potential workqueue corruption	2023-11-28 17:19:35 +00:00
ww_mutex.h	locking/rtmutex: Fix task->pi_waiters integrity	2023-07-17 13:59:10 +02:00
ww_rt_mutex.c