From: kernel test robot <lkp@intel.com>
To: kernel@openeuler.org, Pu Lehui <pulehui@huawei.com>
Cc: oe-kbuild-all@lists.linux.dev
Subject: [openeuler:OLK-6.6 3534/3534] kernel/locking/mutex.c:623:6: warning: variable 'ifs_clock' is used uninitialized whenever 'if' condition is true
Date: Thu, 11 Dec 2025 21:27:20 +0100 [thread overview]
Message-ID: <202512112149.942egSDc-lkp@intel.com> (raw)
Hi Pu,
FYI, the error/warning still remains.
tree: https://gitee.com/openeuler/kernel.git OLK-6.6
head: 5930fa3740c518a9f6ba688fd0c1873d6f3adbce
commit: a1ad9b2ed459a3e3a4a2de50e03f53036fc7ec96 [3534/3534] interference: Add mutex interference track support
config: arm64-allnoconfig-bpf (https://download.01.org/0day-ci/archive/20251211/202512112149.942egSDc-lkp@intel.com/config)
compiler: clang version 22.0.0git (https://github.com/llvm/llvm-project 4125e73cdc6188cca4c1c72b72e2b2d85c157483)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251211/202512112149.942egSDc-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202512112149.942egSDc-lkp@intel.com/
All warnings (new ones prefixed by >>):
In file included from <built-in>:3:
In file included from ././include/linux/compiler_types.h:150:
./include/linux/compiler-clang.h:33:9: warning: '__SANITIZE_ADDRESS__' macro redefined [-Wmacro-redefined]
33 | #define __SANITIZE_ADDRESS__
| ^
<built-in>:367:9: note: previous definition is here
367 | #define __SANITIZE_ADDRESS__ 1
| ^
>> kernel/locking/mutex.c:623:6: warning: variable 'ifs_clock' is used uninitialized whenever 'if' condition is true [-Wsometimes-uninitialized]
623 | if (__mutex_trylock(lock)) {
| ^~~~~~~~~~~~~~~~~~~~~
kernel/locking/mutex.c:725:24: note: uninitialized use occurs here
725 | cgroup_ifs_leave_lock(ifs_clock, IFS_MUTEX);
| ^~~~~~~~~
kernel/locking/mutex.c:623:2: note: remove the 'if' if its condition is always false
623 | if (__mutex_trylock(lock)) {
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
624 | if (ww_ctx)
| ~~~~~~~~~~~
625 | __ww_mutex_check_waiters(lock, ww_ctx);
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
626 |
627 | goto skip_wait;
| ~~~~~~~~~~~~~~~
628 | }
| ~
kernel/locking/mutex.c:576:15: note: initialize the variable 'ifs_clock' to silence this warning
576 | u64 ifs_clock;
| ^
| = 0
2 warnings generated.
vim +623 kernel/locking/mutex.c
040a0a37100563 kernel/mutex.c Maarten Lankhorst 2013-06-24 565
040a0a37100563 kernel/mutex.c Maarten Lankhorst 2013-06-24 566 /*
040a0a37100563 kernel/mutex.c Maarten Lankhorst 2013-06-24 567 * Lock a mutex (possibly interruptible), slowpath:
040a0a37100563 kernel/mutex.c Maarten Lankhorst 2013-06-24 568 */
040a0a37100563 kernel/mutex.c Maarten Lankhorst 2013-06-24 569 static __always_inline int __sched
2f064a59a11ff9 kernel/locking/mutex.c Peter Zijlstra 2021-06-11 570 __mutex_lock_common(struct mutex *lock, unsigned int state, unsigned int subclass,
040a0a37100563 kernel/mutex.c Maarten Lankhorst 2013-06-24 571 struct lockdep_map *nest_lock, unsigned long ip,
b0267507dfd018 kernel/mutex.c Tetsuo Handa 2013-10-17 572 struct ww_acquire_ctx *ww_ctx, const bool use_ww_ctx)
6053ee3b32e343 kernel/mutex.c Ingo Molnar 2006-01-09 573 {
6053ee3b32e343 kernel/mutex.c Ingo Molnar 2006-01-09 574 struct mutex_waiter waiter;
a40ca56577f628 kernel/locking/mutex.c Waiman Long 2016-08-26 575 struct ww_mutex *ww;
a1ad9b2ed459a3 kernel/locking/mutex.c Pu Lehui 2025-07-16 576 u64 ifs_clock;
040a0a37100563 kernel/mutex.c Maarten Lankhorst 2013-06-24 577 int ret;
6053ee3b32e343 kernel/mutex.c Ingo Molnar 2006-01-09 578
5de2055d31ea88 kernel/locking/mutex.c Waiman Long 2021-03-16 579 if (!use_ww_ctx)
5de2055d31ea88 kernel/locking/mutex.c Waiman Long 2021-03-16 580 ww_ctx = NULL;
5de2055d31ea88 kernel/locking/mutex.c Waiman Long 2021-03-16 581
427b18207a87f6 kernel/locking/mutex.c Peter Zijlstra 2016-12-23 582 might_sleep();
ea9e0fb8fe1bdf kernel/locking/mutex.c Nicolai Hähnle 2016-12-21 583
e6b4457b05f36b kernel/locking/mutex.c Peter Zijlstra 2021-06-30 584 MUTEX_WARN_ON(lock->magic != lock);
6c11c6e3d5e9e5 kernel/locking/mutex.c Sebastian Andrzej Siewior 2019-07-03 585
a40ca56577f628 kernel/locking/mutex.c Waiman Long 2016-08-26 586 ww = container_of(lock, struct ww_mutex, base);
5de2055d31ea88 kernel/locking/mutex.c Waiman Long 2021-03-16 587 if (ww_ctx) {
0422e83d84ae24 kernel/locking/mutex.c Chris Wilson 2016-05-26 588 if (unlikely(ww_ctx == READ_ONCE(ww->ctx)))
0422e83d84ae24 kernel/locking/mutex.c Chris Wilson 2016-05-26 589 return -EALREADY;
08295b3b5beec9 kernel/locking/mutex.c Thomas Hellstrom 2018-06-15 590
08295b3b5beec9 kernel/locking/mutex.c Thomas Hellstrom 2018-06-15 591 /*
08295b3b5beec9 kernel/locking/mutex.c Thomas Hellstrom 2018-06-15 592 * Reset the wounded flag after a kill. No other process can
08295b3b5beec9 kernel/locking/mutex.c Thomas Hellstrom 2018-06-15 593 * race and wound us here since they can't have a valid owner
08295b3b5beec9 kernel/locking/mutex.c Thomas Hellstrom 2018-06-15 594 * pointer if we don't have any locks held.
08295b3b5beec9 kernel/locking/mutex.c Thomas Hellstrom 2018-06-15 595 */
08295b3b5beec9 kernel/locking/mutex.c Thomas Hellstrom 2018-06-15 596 if (ww_ctx->acquired == 0)
08295b3b5beec9 kernel/locking/mutex.c Thomas Hellstrom 2018-06-15 597 ww_ctx->wounded = 0;
cf702eddcd03dc kernel/locking/mutex.c Peter Zijlstra 2021-08-15 598
cf702eddcd03dc kernel/locking/mutex.c Peter Zijlstra 2021-08-15 599 #ifdef CONFIG_DEBUG_LOCK_ALLOC
cf702eddcd03dc kernel/locking/mutex.c Peter Zijlstra 2021-08-15 600 nest_lock = &ww_ctx->dep_map;
cf702eddcd03dc kernel/locking/mutex.c Peter Zijlstra 2021-08-15 601 #endif
0422e83d84ae24 kernel/locking/mutex.c Chris Wilson 2016-05-26 602 }
0422e83d84ae24 kernel/locking/mutex.c Chris Wilson 2016-05-26 603
41719b03091911 kernel/mutex.c Peter Zijlstra 2009-01-14 604 preempt_disable();
e4c70a6629f9c7 kernel/mutex.c Peter Zijlstra 2011-05-24 605 mutex_acquire_nest(&lock->dep_map, subclass, 0, nest_lock, ip);
c02260277e4720 kernel/mutex.c Frederic Weisbecker 2009-12-02 606
dc1f7893a70fe4 kernel/locking/mutex.c Peter Zijlstra 2022-03-30 607 trace_contention_begin(lock, LCB_F_MUTEX | LCB_F_SPIN);
e274795ea7b7ca kernel/locking/mutex.c Peter Zijlstra 2017-01-11 608 if (__mutex_trylock(lock) ||
5de2055d31ea88 kernel/locking/mutex.c Waiman Long 2021-03-16 609 mutex_optimistic_spin(lock, ww_ctx, NULL)) {
76916515d9d84e kernel/locking/mutex.c Davidlohr Bueso 2014-07-30 610 /* got the lock, yay! */
3ca0ff571b092e kernel/locking/mutex.c Peter Zijlstra 2016-08-23 611 lock_acquired(&lock->dep_map, ip);
5de2055d31ea88 kernel/locking/mutex.c Waiman Long 2021-03-16 612 if (ww_ctx)
3ca0ff571b092e kernel/locking/mutex.c Peter Zijlstra 2016-08-23 613 ww_mutex_set_context_fastpath(ww, ww_ctx);
dc1f7893a70fe4 kernel/locking/mutex.c Peter Zijlstra 2022-03-30 614 trace_contention_end(lock, 0);
ac6e60ee405aa3 kernel/mutex.c Chris Mason 2009-01-14 615 preempt_enable();
ac6e60ee405aa3 kernel/mutex.c Chris Mason 2009-01-14 616 return 0;
ac6e60ee405aa3 kernel/mutex.c Chris Mason 2009-01-14 617 }
ac6e60ee405aa3 kernel/mutex.c Chris Mason 2009-01-14 618
ebf4c55c1ddbab kernel/locking/mutex.c Thomas Gleixner 2021-08-15 619 raw_spin_lock(&lock->wait_lock);
1e820c9608eace kernel/locking/mutex.c Jason Low 2014-06-11 620 /*
3ca0ff571b092e kernel/locking/mutex.c Peter Zijlstra 2016-08-23 621 * After waiting to acquire the wait_lock, try again.
1e820c9608eace kernel/locking/mutex.c Jason Low 2014-06-11 622 */
659cf9f5824a12 kernel/locking/mutex.c Nicolai Hähnle 2016-12-21 @623 if (__mutex_trylock(lock)) {
5de2055d31ea88 kernel/locking/mutex.c Waiman Long 2021-03-16 624 if (ww_ctx)
55f036ca7e74b8 kernel/locking/mutex.c Peter Ziljstra 2018-06-15 625 __ww_mutex_check_waiters(lock, ww_ctx);
659cf9f5824a12 kernel/locking/mutex.c Nicolai Hähnle 2016-12-21 626
ec83f425dbca47 kernel/mutex.c Davidlohr Bueso 2013-06-28 627 goto skip_wait;
659cf9f5824a12 kernel/locking/mutex.c Nicolai Hähnle 2016-12-21 628 }
ec83f425dbca47 kernel/mutex.c Davidlohr Bueso 2013-06-28 629
9a11b49a805665 kernel/mutex.c Ingo Molnar 2006-07-03 630 debug_mutex_lock_common(lock, &waiter);
c0afb0ffc06e6b kernel/locking/mutex.c Peter Zijlstra 2021-08-15 631 waiter.task = current;
b857174e68e26f kernel/locking/mutex.c Sebastian Andrzej Siewior 2021-08-19 632 if (use_ww_ctx)
c0afb0ffc06e6b kernel/locking/mutex.c Peter Zijlstra 2021-08-15 633 waiter.ww_ctx = ww_ctx;
6053ee3b32e343 kernel/mutex.c Ingo Molnar 2006-01-09 634
6baa5c60a97d7f kernel/locking/mutex.c Nicolai Hähnle 2016-12-21 635 lock_contended(&lock->dep_map, ip);
6053ee3b32e343 kernel/mutex.c Ingo Molnar 2006-01-09 636
6baa5c60a97d7f kernel/locking/mutex.c Nicolai Hähnle 2016-12-21 637 if (!use_ww_ctx) {
6053ee3b32e343 kernel/mutex.c Ingo Molnar 2006-01-09 638 /* add waiting tasks to the end of the waitqueue (FIFO): */
08295b3b5beec9 kernel/locking/mutex.c Thomas Hellstrom 2018-06-15 639 __mutex_add_waiter(lock, &waiter, &lock->wait_list);
6baa5c60a97d7f kernel/locking/mutex.c Nicolai Hähnle 2016-12-21 640 } else {
55f036ca7e74b8 kernel/locking/mutex.c Peter Ziljstra 2018-06-15 641 /*
55f036ca7e74b8 kernel/locking/mutex.c Peter Ziljstra 2018-06-15 642 * Add in stamp order, waking up waiters that must kill
55f036ca7e74b8 kernel/locking/mutex.c Peter Ziljstra 2018-06-15 643 * themselves.
55f036ca7e74b8 kernel/locking/mutex.c Peter Ziljstra 2018-06-15 644 */
6baa5c60a97d7f kernel/locking/mutex.c Nicolai Hähnle 2016-12-21 645 ret = __ww_mutex_add_waiter(&waiter, lock, ww_ctx);
6baa5c60a97d7f kernel/locking/mutex.c Nicolai Hähnle 2016-12-21 646 if (ret)
55f036ca7e74b8 kernel/locking/mutex.c Peter Ziljstra 2018-06-15 647 goto err_early_kill;
6baa5c60a97d7f kernel/locking/mutex.c Nicolai Hähnle 2016-12-21 648 }
6baa5c60a97d7f kernel/locking/mutex.c Nicolai Hähnle 2016-12-21 649
642fa448ae6b3a kernel/locking/mutex.c Davidlohr Bueso 2017-01-03 650 set_current_state(state);
dc1f7893a70fe4 kernel/locking/mutex.c Peter Zijlstra 2022-03-30 651 trace_contention_begin(lock, LCB_F_MUTEX);
a1ad9b2ed459a3 kernel/locking/mutex.c Pu Lehui 2025-07-16 652 cgroup_ifs_enter_lock(&ifs_clock);
6053ee3b32e343 kernel/mutex.c Ingo Molnar 2006-01-09 653 for (;;) {
048661a1f963e9 kernel/locking/mutex.c Peter Zijlstra 2021-06-30 654 bool first;
048661a1f963e9 kernel/locking/mutex.c Peter Zijlstra 2021-06-30 655
5bbd7e64437833 kernel/locking/mutex.c Peter Zijlstra 2016-09-02 656 /*
5bbd7e64437833 kernel/locking/mutex.c Peter Zijlstra 2016-09-02 657 * Once we hold wait_lock, we're serialized against
5bbd7e64437833 kernel/locking/mutex.c Peter Zijlstra 2016-09-02 658 * mutex_unlock() handing the lock off to us, do a trylock
5bbd7e64437833 kernel/locking/mutex.c Peter Zijlstra 2016-09-02 659 * before testing the error conditions to make sure we pick up
5bbd7e64437833 kernel/locking/mutex.c Peter Zijlstra 2016-09-02 660 * the handoff.
5bbd7e64437833 kernel/locking/mutex.c Peter Zijlstra 2016-09-02 661 */
e274795ea7b7ca kernel/locking/mutex.c Peter Zijlstra 2017-01-11 662 if (__mutex_trylock(lock))
5bbd7e64437833 kernel/locking/mutex.c Peter Zijlstra 2016-09-02 663 goto acquired;
6053ee3b32e343 kernel/mutex.c Ingo Molnar 2006-01-09 664
6053ee3b32e343 kernel/mutex.c Ingo Molnar 2006-01-09 665 /*
55f036ca7e74b8 kernel/locking/mutex.c Peter Ziljstra 2018-06-15 666 * Check for signals and kill conditions while holding
5bbd7e64437833 kernel/locking/mutex.c Peter Zijlstra 2016-09-02 667 * wait_lock. This ensures the lock cancellation is ordered
5bbd7e64437833 kernel/locking/mutex.c Peter Zijlstra 2016-09-02 668 * against mutex_unlock() and wake-ups do not go missing.
6053ee3b32e343 kernel/mutex.c Ingo Molnar 2006-01-09 669 */
3bb5f4ac55dd91 kernel/locking/mutex.c Davidlohr Bueso 2019-01-03 670 if (signal_pending_state(state, current)) {
040a0a37100563 kernel/mutex.c Maarten Lankhorst 2013-06-24 671 ret = -EINTR;
040a0a37100563 kernel/mutex.c Maarten Lankhorst 2013-06-24 672 goto err;
040a0a37100563 kernel/mutex.c Maarten Lankhorst 2013-06-24 673 }
6053ee3b32e343 kernel/mutex.c Ingo Molnar 2006-01-09 674
5de2055d31ea88 kernel/locking/mutex.c Waiman Long 2021-03-16 675 if (ww_ctx) {
55f036ca7e74b8 kernel/locking/mutex.c Peter Ziljstra 2018-06-15 676 ret = __ww_mutex_check_kill(lock, &waiter, ww_ctx);
040a0a37100563 kernel/mutex.c Maarten Lankhorst 2013-06-24 677 if (ret)
040a0a37100563 kernel/mutex.c Maarten Lankhorst 2013-06-24 678 goto err;
6053ee3b32e343 kernel/mutex.c Ingo Molnar 2006-01-09 679 }
040a0a37100563 kernel/mutex.c Maarten Lankhorst 2013-06-24 680
ebf4c55c1ddbab kernel/locking/mutex.c Thomas Gleixner 2021-08-15 681 raw_spin_unlock(&lock->wait_lock);
bd2f55361f1834 kernel/mutex.c Thomas Gleixner 2011-03-21 682 schedule_preempt_disabled();
9d659ae14b545c kernel/locking/mutex.c Peter Zijlstra 2016-08-23 683
6baa5c60a97d7f kernel/locking/mutex.c Nicolai Hähnle 2016-12-21 684 first = __mutex_waiter_is_first(lock, &waiter);
5bbd7e64437833 kernel/locking/mutex.c Peter Zijlstra 2016-09-02 685
642fa448ae6b3a kernel/locking/mutex.c Davidlohr Bueso 2017-01-03 686 set_current_state(state);
5bbd7e64437833 kernel/locking/mutex.c Peter Zijlstra 2016-09-02 687 /*
5bbd7e64437833 kernel/locking/mutex.c Peter Zijlstra 2016-09-02 688 * Here we order against unlock; we must either see it change
5bbd7e64437833 kernel/locking/mutex.c Peter Zijlstra 2016-09-02 689 * state back to RUNNING and fall through the next schedule(),
5bbd7e64437833 kernel/locking/mutex.c Peter Zijlstra 2016-09-02 690 * or we must see its unlock and acquire.
5bbd7e64437833 kernel/locking/mutex.c Peter Zijlstra 2016-09-02 691 */
dc1f7893a70fe4 kernel/locking/mutex.c Peter Zijlstra 2022-03-30 692 if (__mutex_trylock_or_handoff(lock, first))
dc1f7893a70fe4 kernel/locking/mutex.c Peter Zijlstra 2022-03-30 693 break;
dc1f7893a70fe4 kernel/locking/mutex.c Peter Zijlstra 2022-03-30 694
dc1f7893a70fe4 kernel/locking/mutex.c Peter Zijlstra 2022-03-30 695 if (first) {
dc1f7893a70fe4 kernel/locking/mutex.c Peter Zijlstra 2022-03-30 696 trace_contention_begin(lock, LCB_F_MUTEX | LCB_F_SPIN);
dc1f7893a70fe4 kernel/locking/mutex.c Peter Zijlstra 2022-03-30 697 if (mutex_optimistic_spin(lock, ww_ctx, &waiter))
5bbd7e64437833 kernel/locking/mutex.c Peter Zijlstra 2016-09-02 698 break;
dc1f7893a70fe4 kernel/locking/mutex.c Peter Zijlstra 2022-03-30 699 trace_contention_begin(lock, LCB_F_MUTEX);
dc1f7893a70fe4 kernel/locking/mutex.c Peter Zijlstra 2022-03-30 700 }
5bbd7e64437833 kernel/locking/mutex.c Peter Zijlstra 2016-09-02 701
ebf4c55c1ddbab kernel/locking/mutex.c Thomas Gleixner 2021-08-15 702 raw_spin_lock(&lock->wait_lock);
6053ee3b32e343 kernel/mutex.c Ingo Molnar 2006-01-09 703 }
ebf4c55c1ddbab kernel/locking/mutex.c Thomas Gleixner 2021-08-15 704 raw_spin_lock(&lock->wait_lock);
5bbd7e64437833 kernel/locking/mutex.c Peter Zijlstra 2016-09-02 705 acquired:
642fa448ae6b3a kernel/locking/mutex.c Davidlohr Bueso 2017-01-03 706 __set_current_state(TASK_RUNNING);
51587bcf31d070 kernel/locking/mutex.c Davidlohr Bueso 2015-01-19 707
5de2055d31ea88 kernel/locking/mutex.c Waiman Long 2021-03-16 708 if (ww_ctx) {
08295b3b5beec9 kernel/locking/mutex.c Thomas Hellstrom 2018-06-15 709 /*
08295b3b5beec9 kernel/locking/mutex.c Thomas Hellstrom 2018-06-15 710 * Wound-Wait; we stole the lock (!first_waiter), check the
08295b3b5beec9 kernel/locking/mutex.c Thomas Hellstrom 2018-06-15 711 * waiters as anyone might want to wound us.
08295b3b5beec9 kernel/locking/mutex.c Thomas Hellstrom 2018-06-15 712 */
08295b3b5beec9 kernel/locking/mutex.c Thomas Hellstrom 2018-06-15 713 if (!ww_ctx->is_wait_die &&
08295b3b5beec9 kernel/locking/mutex.c Thomas Hellstrom 2018-06-15 714 !__mutex_waiter_is_first(lock, &waiter))
08295b3b5beec9 kernel/locking/mutex.c Thomas Hellstrom 2018-06-15 715 __ww_mutex_check_waiters(lock, ww_ctx);
08295b3b5beec9 kernel/locking/mutex.c Thomas Hellstrom 2018-06-15 716 }
08295b3b5beec9 kernel/locking/mutex.c Thomas Hellstrom 2018-06-15 717
3a010c493271f0 kernel/locking/mutex.c Zqiang 2021-05-17 718 __mutex_remove_waiter(lock, &waiter);
3ca0ff571b092e kernel/locking/mutex.c Peter Zijlstra 2016-08-23 719
ec83f425dbca47 kernel/mutex.c Davidlohr Bueso 2013-06-28 720 debug_mutex_free_waiter(&waiter);
6053ee3b32e343 kernel/mutex.c Ingo Molnar 2006-01-09 721
ec83f425dbca47 kernel/mutex.c Davidlohr Bueso 2013-06-28 722 skip_wait:
ec83f425dbca47 kernel/mutex.c Davidlohr Bueso 2013-06-28 723 /* got the lock - cleanup and rejoice! */
c7e78cff6b7518 kernel/mutex.c Peter Zijlstra 2008-10-16 724 lock_acquired(&lock->dep_map, ip);
a1ad9b2ed459a3 kernel/locking/mutex.c Pu Lehui 2025-07-16 725 cgroup_ifs_leave_lock(ifs_clock, IFS_MUTEX);
ee042be16cb455 kernel/locking/mutex.c Namhyung Kim 2022-03-22 726 trace_contention_end(lock, 0);
6053ee3b32e343 kernel/mutex.c Ingo Molnar 2006-01-09 727
5de2055d31ea88 kernel/locking/mutex.c Waiman Long 2021-03-16 728 if (ww_ctx)
55f036ca7e74b8 kernel/locking/mutex.c Peter Ziljstra 2018-06-15 729 ww_mutex_lock_acquired(ww, ww_ctx);
040a0a37100563 kernel/mutex.c Maarten Lankhorst 2013-06-24 730
ebf4c55c1ddbab kernel/locking/mutex.c Thomas Gleixner 2021-08-15 731 raw_spin_unlock(&lock->wait_lock);
41719b03091911 kernel/mutex.c Peter Zijlstra 2009-01-14 732 preempt_enable();
6053ee3b32e343 kernel/mutex.c Ingo Molnar 2006-01-09 733 return 0;
040a0a37100563 kernel/mutex.c Maarten Lankhorst 2013-06-24 734
040a0a37100563 kernel/mutex.c Maarten Lankhorst 2013-06-24 735 err:
642fa448ae6b3a kernel/locking/mutex.c Davidlohr Bueso 2017-01-03 736 __set_current_state(TASK_RUNNING);
3a010c493271f0 kernel/locking/mutex.c Zqiang 2021-05-17 737 __mutex_remove_waiter(lock, &waiter);
55f036ca7e74b8 kernel/locking/mutex.c Peter Ziljstra 2018-06-15 738 err_early_kill:
a1ad9b2ed459a3 kernel/locking/mutex.c Pu Lehui 2025-07-16 739 cgroup_ifs_leave_lock(ifs_clock, IFS_MUTEX);
dc1f7893a70fe4 kernel/locking/mutex.c Peter Zijlstra 2022-03-30 740 trace_contention_end(lock, ret);
ebf4c55c1ddbab kernel/locking/mutex.c Thomas Gleixner 2021-08-15 741 raw_spin_unlock(&lock->wait_lock);
040a0a37100563 kernel/mutex.c Maarten Lankhorst 2013-06-24 742 debug_mutex_free_waiter(&waiter);
5facae4f3549b5 kernel/locking/mutex.c Qian Cai 2019-09-19 743 mutex_release(&lock->dep_map, ip);
040a0a37100563 kernel/mutex.c Maarten Lankhorst 2013-06-24 744 preempt_enable();
040a0a37100563 kernel/mutex.c Maarten Lankhorst 2013-06-24 745 return ret;
6053ee3b32e343 kernel/mutex.c Ingo Molnar 2006-01-09 746 }
6053ee3b32e343 kernel/mutex.c Ingo Molnar 2006-01-09 747
:::::: The code at line 623 was first introduced by commit
:::::: 659cf9f5824a12e6b50785e4e9cf1adf8a3adbd0 locking/ww_mutex: Optimize ww-mutexes by waking at most one waiter for backoff when acquiring the lock
:::::: TO: Nicolai Hähnle <Nicolai.Haehnle@amd.com>
:::::: CC: Ingo Molnar <mingo@kernel.org>
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
next reply other threads:[~2025-12-11 20:27 UTC|newest]
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2025-12-11 20:27 kernel test robot [this message]
-- strict thread matches above, loose matches on Subject: below --
2025-12-11 4:35 [openeuler:OLK-6.6 3534/3534] kernel/locking/mutex.c:623:6: warning: variable 'ifs_clock' is used uninitialized whenever 'if' condition is true kernel test robot
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all data and code used by this external index.