Repository files (latest commit first)

Filename	Latest commit message	Latest commit date
Boqun Feng 2ef6cd6e48 lockding/lockdep: Avoid to find wrong lock dep path in check_irq_usage() ... [ Upstream commit 7b1f8c6179769af6ffa055e1169610b51d71edd5 ] In the step #3 of check_irq_usage(), we seach backwards to find a lock whose usage conflicts the usage of @target_entry1 on safe/unsafe. However, we should only keep the irq-unsafe usage of @target_entry1 into consideration, because it could be a case where a lock is hardirq-unsafe but soft-safe, and in check_irq_usage() we find it because its hardirq-unsafe could result into a hardirq-safe-unsafe deadlock, but currently since we don't filter out the other usage bits, so we may find a lock dependency path softirq-unsafe -> softirq-safe, which in fact doesn't cause a deadlock. And this may cause misleading lockdep splats. Fix this by only keeping LOCKF_ENABLED_IRQ_ALL bits when we try the backwards search. Reported-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: Boqun Feng <boqun.feng@gmail.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lore.kernel.org/r/20210618170110.3699115-4-boqun.feng@gmail.com Signed-off-by: Sasha Levin <sashal@kernel.org>		2021-07-14 16:53:15 +02:00
..
lock_events.c
lock_events.h
lock_events_list.h
lockdep.c	lockding/lockdep: Avoid to find wrong lock dep path in check_irq_usage()	2021-07-14 16:53:15 +02:00
lockdep_internals.h	locking/lockdep: Decrement IRQ context counters when removing lock chain	2020-10-01 13:17:33 +02:00
lockdep_proc.c
lockdep_states.h
locktorture.c
Makefile
mcs_spinlock.h
mutex-debug.c	locking/mutex: clear MUTEX_FLAGS if wait_list is empty due to signal	2021-05-26 12:05:15 +02:00
mutex-debug.h	locking/mutex: clear MUTEX_FLAGS if wait_list is empty due to signal	2021-05-26 12:05:15 +02:00
mutex.c	locking/mutex: clear MUTEX_FLAGS if wait_list is empty due to signal	2021-05-26 12:05:15 +02:00
mutex.h	locking/mutex: clear MUTEX_FLAGS if wait_list is empty due to signal	2021-05-26 12:05:15 +02:00
osq_lock.c
percpu-rwsem.c
qrwlock.c	locking/qrwlock: Fix ordering in queued_write_lock_slowpath()	2021-04-28 13:19:14 +02:00
qspinlock.c
qspinlock_paravirt.h
qspinlock_stat.h
rtmutex-debug.c
rtmutex-debug.h
rtmutex.c	rtmutex: Remove unused argument from rt_mutex_proxy_unlock()	2021-01-30 13:54:09 +01:00
rtmutex.h
rtmutex_common.h	rtmutex: Remove unused argument from rt_mutex_proxy_unlock()	2021-01-30 13:54:09 +01:00
rwsem.c	exec: Transform exec_update_mutex into a rw_semaphore	2021-01-09 13:44:55 +01:00
rwsem.h
semaphore.c
spinlock.c
spinlock_debug.c
test-ww_mutex.c