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linux/kernel/locking
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Linus Torvalds c8990f3179 Misc locking fixes: 
- Fix a softirq processing delay bug in local_interrupt_disable(),
    which should mostly only affect the Rust runtime (Boqun Feng)
 
  - Remove the hardirq_disable_count() function which caused the
    previous bug and is now unused & unnecessary (Boqun Feng)
 
  - lockdep: Invalidate stale class_cache entries for zapped classes
    (Eric Dumazet)
 
  - Fix rt_mutex specific futex scheduling helpers
    (Sebastian Andrzej Siewior)
 
  - Fix rcuwait use-after-free race during futex requeue PI (Yao Kai)
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'locking-urgent-2026-09-06' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull locking fixes from Ingo Molnar:

 - Fix a softirq processing delay bug in local_interrupt_disable(),
   which should mostly only affect the Rust runtime (Boqun Feng)

 - Remove the hardirq_disable_count() function which caused the
   previous bug and is now unused & unnecessary (Boqun Feng)

 - lockdep: Invalidate stale class_cache entries for zapped classes
   (Eric Dumazet)

 - Fix rt_mutex specific futex scheduling helpers
   (Sebastian Andrzej Siewior)

 - Fix rcuwait use-after-free race during futex requeue PI (Yao Kai)

* tag 'locking-urgent-2026-09-06' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  futex: Prevent rcuwait use-after-free during requeue PI
  futex: Provide rt_mutex_.*_schedule() equivalents for futex scheduling
  locking/lockdep: Invalidate stale class_cache entries for zapped classes
  preempt: Remove hardirq_disable_count()
  interrupt: Disable interrupt before modifying hardirq_disable counter
2026-09-06 10:45:46 -07:00
..
irqflag-debug.c lockdep: Noinstr annotate warn_bogus_irq_restore() 2021-02-10 14:44:39 +01:00
lock_events_list.h bpf_res_spin_lock 2025-03-30 13:06:27 -07:00
lock_events.c locking/debug: Fix debugfs API return value checks to use IS_ERR() 2023-10-03 10:11:25 +02:00
lock_events.h locking/qspinlock: Always evaluate lockevent* non-event parameter once 2024-03-21 20:45:17 +01:00
lockdep_internals.h locking/lockdep: Change 'static const' variables to enum values 2025-07-14 21:57:29 -07:00
lockdep_proc.c locking/lockdep: Avoid struct return in lock_stats() 2025-07-14 21:57:20 -07:00
lockdep_states.h locking/lockdep: Rework FS_RECLAIM annotation 2017-08-10 12:29:03 +02:00
lockdep.c Misc locking fixes: 2026-09-06 10:45:46 -07:00
locktorture.c Convert remaining multi-line kmalloc_obj/flex GFP_KERNEL uses 2026-02-22 08:26:33 -08:00
Makefile locking/rwsem: Add context analysis 2026-03-08 11:06:53 +01:00
mcs_spinlock.h locking: Allow obtaining result of arch_mcs_spin_lock_contended 2025-03-19 08:03:04 -07:00
mutex-debug.c Scheduler changes for v7.1: 2026-04-14 13:33:36 -07:00
mutex.c tracing/lock: Use TRACE_EVENT_FN() for contended_release 2026-08-07 17:58:10 +02:00
mutex.h Scheduler changes for v7.1: 2026-04-14 13:33:36 -07:00
osq_lock.c locking/osq_lock: Use atomic_try_cmpxchg_release() in osq_unlock() 2024-10-25 10:01:50 +02:00
percpu-rwsem.c locking/percpu-rwsem: Annotate intentional data race in readers_active_check() 2026-07-31 10:32:25 +02:00
qrwlock.c locking: Add __lockfunc to slow path functions 2022-08-19 19:47:51 +02:00
qspinlock_paravirt.h locking/pvqspinlock: Convert fields of 'enum vcpu_state' to uppercase 2024-10-17 21:21:16 -07:00
qspinlock_stat.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
qspinlock.c locking/qspinlock: Add contended_release tracepoint 2026-08-07 17:58:10 +02:00
qspinlock.h locking: Move common qspinlock helpers to a private header 2025-03-19 08:02:29 -07:00
rtmutex_api.c futex: Provide rt_mutex_.*_schedule() equivalents for futex scheduling 2026-09-04 08:14:15 +02:00
rtmutex_common.h locking/rtmutex: Add context analysis 2026-03-08 11:06:53 +01:00
rtmutex.c Locking updates for v7.2: 2026-06-15 14:21:14 +05:30
rwbase_rt.c locking: Add contended_release tracepoint to sleepable locks 2026-06-11 13:41:25 +02:00
rwsem.c locking: Add contended_release tracepoint to sleepable locks 2026-06-11 13:41:25 +02:00
semaphore.c locking: Add contended_release tracepoint to sleepable locks 2026-06-11 13:41:25 +02:00
spinlock_debug.c locking/spinlock/debug: Fix data-race in do_raw_write_lock 2025-10-21 12:31:55 +02:00
spinlock_rt.c locking/rt: Fix the incorrect RCU protection in rt_spin_unlock() 2026-06-21 11:51:13 +02:00
spinlock.c irq,spin_lock: Add counted interrupt disabling/enabling 2026-08-10 10:50:18 +02:00
test-ww_mutex.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
ww_mutex.h sched/proxy: Remove PROXY_WAKING 2026-06-02 12:26:09 +02:00
ww_rt_mutex.c locking/rtmutex: Add context analysis 2026-03-08 11:06:53 +01:00