Peter Zijlstra 4028b42699 lockdep: Fix preemption WARN for spurious IRQ-enable ...

[ Upstream commit f8e48a3dca ]

It is valid (albeit uncommon) to call local_irq_enable() without first
having called local_irq_disable(). In this case we enter
lockdep_hardirqs_on*() with IRQs enabled and trip a preemption warning
for using __this_cpu_read().

Use this_cpu_read() instead to avoid the warning.

Fixes: 4d004099a6 ("lockdep: Fix lockdep recursion")
Reported-by: syzbot+53f8ce8bbc07924b6417@syzkaller.appspotmail.com
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

2020-11-05 11:51:12 +01:00

..

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

lockdep: Fix usage_traceoverflow

2020-10-29 10:11:03 +01:00

lockdep_proc.c

locking/lockdep: Fix overflow in presentation of average lock-time

2020-07-25 21:47:42 +02:00

lockdep_states.h

locking/lockdep: Rework FS_RECLAIM annotation

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

lockdep.c

lockdep: Fix preemption WARN for spurious IRQ-enable

2020-11-05 11:51:12 +01:00

locktorture.c

Merge tag 'sched-fifo-2020-08-04' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2020-08-06 11:55:43 -07:00

Makefile

kcsan: Make KCSAN compatible with lockdep

2020-03-21 09:41:16 +01:00

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

lockdep: Introduce wait-type checks

2020-03-21 16:00:24 +01:00

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

Revert "locking/mutex: Complain upon mutex API misuse in IRQ contexts"

2019-12-11 00:27:43 +01:00

mutex.h

mutex: Fix up mutex_waiter usage

2019-08-08 09:09:25 +02:00

osq_lock.c

locking/osq_lock: Annotate a data race in osq_lock

2020-06-29 12:04:48 -07:00

percpu-rwsem.c

locking/percpu-rwsem: Use this_cpu_{inc,dec}() for read_count

2020-09-16 16:26:56 +02:00

qrwlock.c

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

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

qspinlock_paravirt.h

Revert "locking/pvqspinlock: Don't wait if vCPU is preempted"

2019-09-25 10:22:37 +02:00

qspinlock_stat.h

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

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

qspinlock.c

x86/kvm: Add "nopvspin" parameter to disable PV spinlocks

2020-07-08 16:21:57 -04:00

rtmutex_common.h

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

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

rtmutex-debug.c

kernel: rename show_stack_loglvl() => show_stack()

2020-06-09 09:39:13 -07:00

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

locking/rtmutex: Remove unused rt_mutex_cmpxchg_relaxed()

2020-04-27 12:26:40 +02:00

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

lockdep: Introduce wait-type checks

2020-03-21 16:00:24 +01:00

rwsem.h

locking/percpu-rwsem: Remove the embedded rwsem

2020-02-11 13:10:56 +01:00

semaphore.c

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

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

spinlock_debug.c

lockdep: Introduce wait-type checks

2020-03-21 16:00:24 +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