INFO: task syz-executor.1:6138 blocked for more than 143 seconds. Not tainted 6.2.0-rc3-next-20230110-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.1 state:D stack:28184 pid:6138 ppid:5115 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:5301 [inline] __schedule+0x25d0/0x5a70 kernel/sched/core.c:6619 schedule+0xde/0x1b0 kernel/sched/core.c:6695 rwsem_down_read_slowpath+0x5a7/0xb20 kernel/locking/rwsem.c:1095 __down_read_common kernel/locking/rwsem.c:1260 [inline] __down_read kernel/locking/rwsem.c:1269 [inline] down_read+0xe6/0x450 kernel/locking/rwsem.c:1511 mmap_read_lock include/linux/mmap_lock.h:117 [inline] do_user_addr_fault+0xa51/0x1210 arch/x86/mm/fault.c:1379 handle_page_fault arch/x86/mm/fault.c:1519 [inline] exc_page_fault+0x98/0x170 arch/x86/mm/fault.c:1575 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570 RIP: 0033:0x7f7a544276c6 RSP: 002b:00007fff0aca9988 EFLAGS: 00010287 RAX: 0000001b32622000 RBX: 00007f7a545ac018 RCX: 0000001b32620000 RDX: 0000001b32622004 RSI: 0000001b326217a0 RDI: 00000000324f59f0 RBP: 00000000324f59f0 R08: 0000001b32a20000 R09: 00000000324f59f4 R10: 00007fff0ad6b090 R11: 0000000000012500 R12: 00007f7a545a0000 R13: 0000000000000001 R14: 00000000000030fb R15: ffffffff89b98eca Showing all threads with locks held in the system: task:rcu_tasks_kthre state:I stack:29040 pid:12 ppid:2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5301 [inline] __schedule+0x25d0/0x5a70 kernel/sched/core.c:6619 schedule+0xde/0x1b0 kernel/sched/core.c:6695 rcu_tasks_one_gp+0x484/0xcd0 kernel/rcu/tasks.h:517 rcu_tasks_kthread+0x77/0xa0 kernel/rcu/tasks.h:555 kthread+0x2e8/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 1 lock held by rcu_tasks_kthre/12: #0: ffffffff8c793470 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3} , at: rcu_tasks_one_gp+0x31/0xcd0 kernel/rcu/tasks.h:510 task:rcu_tasks_trace state:I stack:29208 pid:13 ppid:2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5301 [inline] __schedule+0x25d0/0x5a70 kernel/sched/core.c:6619 schedule+0xde/0x1b0 kernel/sched/core.c:6695 rcu_tasks_one_gp+0x484/0xcd0 kernel/rcu/tasks.h:517 rcu_tasks_kthread+0x77/0xa0 kernel/rcu/tasks.h:555 kthread+0x2e8/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 1 lock held by rcu_tasks_trace/13: #0: ffffffff8c793170 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x31/0xcd0 kernel/rcu/tasks.h:510 task:kworker/1:0 state:D stack:26208 pid:22 ppid:2 flags:0x00004000 Workqueue: events fqdir_free_fn Call Trace: context_switch kernel/sched/core.c:5301 [inline] __schedule+0x25d0/0x5a70 kernel/sched/core.c:6619 schedule+0xde/0x1b0 kernel/sched/core.c:6695 schedule_timeout+0x1e1/0x2a0 kernel/time/timer.c:2143 do_wait_for_common kernel/sched/completion.c:85 [inline] __wait_for_common+0x1ce/0x5c0 kernel/sched/completion.c:106 rcu_barrier+0x37f/0x6d0 kernel/rcu/tree.c:4012 fqdir_free_fn+0x32/0x160 net/ipv4/inet_fragment.c:164 process_one_work+0x9bf/0x1750 kernel/workqueue.c:2293 worker_thread+0x669/0x1090 kernel/workqueue.c:2440 kthread+0x2e8/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 3 locks held by kworker/1:0/22: #0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x86d/0x1750 kernel/workqueue.c:2264 #1: ffffc900001c7da8 (fqdir_free_work){+.+.}-{0:0}, at: process_one_work+0x8a1/0x1750 kernel/workqueue.c:2268 #2: ffffffff8c79f000 (rcu_state.barrier_mutex){+.+.}-{3:3}, at: rcu_barrier+0x48/0x6d0 kernel/rcu/tree.c:3944 task:getty state:S stack:23336 pid:4753 ppid:1 flags:0x00000000 Call Trace: context_switch kernel/sched/core.c:5301 [inline] __schedule+0x25d0/0x5a70 kernel/sched/core.c:6619 schedule+0xde/0x1b0 kernel/sched/core.c:6695 schedule_timeout+0x1e1/0x2a0 kernel/time/timer.c:2143 wait_woken+0x197/0x200 kernel/sched/wait.c:463 n_tty_read+0x1055/0x13e0 drivers/tty/n_tty.c:2243 iterate_tty_read drivers/tty/tty_io.c:852 [inline] tty_read+0x30e/0x5a0 drivers/tty/tty_io.c:927 call_read_iter include/linux/fs.h:1846 [inline] new_sync_read fs/read_write.c:389 [inline] vfs_read+0x681/0x930 fs/read_write.c:470 ksys_read+0x12b/0x250 fs/read_write.c:613 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f602e59a8fe RSP: 002b:00007fff624f9d38 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 RAX: ffffffffffffffda RBX: 00005639f73f2910 RCX: 00007f602e59a8fe RDX: 0000000000000001 RSI: 00007fff624f9d50 RDI: 0000000000000000 RBP: 00005639f73f2970 R08: 0000000000000007 R09: 00005639f73f3cd0 R10: 0000000000000063 R11: 0000000000000246 R12: 00005639f73f29ac R13: 00007fff624f9d50 R14: 0000000000000000 R15: 00005639f73f29ac 2 locks held by getty/4753: #0: ffff88814a276098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x26/0x80 drivers/tty/tty_ldisc.c:244 #1: ffffc900015902f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xef4/0x13e0 drivers/tty/n_tty.c:2177 task:kworker/1:5 state:D stack:27280 pid:5177 ppid:2 flags:0x00004000 Workqueue: events pwq_unbound_release_workfn Call Trace: context_switch kernel/sched/core.c:5301 [inline] __schedule+0x25d0/0x5a70 kernel/sched/core.c:6619 schedule+0xde/0x1b0 kernel/sched/core.c:6695 exp_funnel_lock kernel/rcu/tree_exp.h:316 [inline] synchronize_rcu_expedited+0x706/0x770 kernel/rcu/tree_exp.h:992 synchronize_rcu+0x302/0x3b0 kernel/rcu/tree.c:3482 lockdep_unregister_key+0x282/0x460 kernel/locking/lockdep.c:6362 wq_unregister_lockdep kernel/workqueue.c:3501 [inline] pwq_unbound_release_workfn+0x258/0x340 kernel/workqueue.c:3739 process_one_work+0x9bf/0x1750 kernel/workqueue.c:2293 worker_thread+0x669/0x1090 kernel/workqueue.c:2440 kthread+0x2e8/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 2 locks held by kworker/1:5/5177: #0: ffff888012470d38 ( (wq_completion)events ){+.+.}-{0:0} , at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] , at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] , at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] , at: set_work_data kernel/workqueue.c:636 [inline] , at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] , at: process_one_work+0x86d/0x1750 kernel/workqueue.c:2264 #1: ffffc9000418fda8 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x8a1/0x1750 kernel/workqueue.c:2268 task:kworker/1:6 state:D stack:26344 pid:5197 ppid:2 flags:0x00004000 Workqueue: events pwq_unbound_release_workfn Call Trace: context_switch kernel/sched/core.c:5301 [inline] __schedule+0x25d0/0x5a70 kernel/sched/core.c:6619 schedule+0xde/0x1b0 kernel/sched/core.c:6695 exp_funnel_lock kernel/rcu/tree_exp.h:316 [inline] synchronize_rcu_expedited+0x706/0x770 kernel/rcu/tree_exp.h:992 synchronize_rcu+0x302/0x3b0 kernel/rcu/tree.c:3482 lockdep_unregister_key+0x282/0x460 kernel/locking/lockdep.c:6362 wq_unregister_lockdep kernel/workqueue.c:3501 [inline] pwq_unbound_release_workfn+0x258/0x340 kernel/workqueue.c:3739 process_one_work+0x9bf/0x1750 kernel/workqueue.c:2293 worker_thread+0x669/0x1090 kernel/workqueue.c:2440 kthread+0x2e8/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 2 locks held by kworker/1:6/5197: #0: ffff888012470d38 ( (wq_completion)events ){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] ){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] ){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] ){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] ){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] ){+.+.}-{0:0}, at: process_one_work+0x86d/0x1750 kernel/workqueue.c:2264 #1: ffffc900049ffda8 ((work_completion)(&pwq->unbound_release_work) ){+.+.}-{0:0} , at: process_one_work+0x8a1/0x1750 kernel/workqueue.c:2268 task:kworker/1:7 state:D stack:26872 pid:5219 ppid:2 flags:0x00004000 Workqueue: rcu_gp wait_rcu_exp_gp Call Trace: context_switch kernel/sched/core.c:5301 [inline] __schedule+0x25d0/0x5a70 kernel/sched/core.c:6619 schedule+0xde/0x1b0 kernel/sched/core.c:6695 schedule_timeout+0x14e/0x2a0 kernel/time/timer.c:2167 synchronize_rcu_expedited_wait_once kernel/rcu/tree_exp.h:572 [inline] synchronize_rcu_expedited_wait kernel/rcu/tree_exp.h:624 [inline] rcu_exp_wait_wake+0x2ab/0x1220 kernel/rcu/tree_exp.h:693 process_one_work+0x9bf/0x1750 kernel/workqueue.c:2293 worker_thread+0x669/0x1090 kernel/workqueue.c:2440 kthread+0x2e8/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 2 locks held by kworker/1:7/5219: #0: ffff888012472538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888012472538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888012472538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888012472538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff888012472538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff888012472538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x86d/0x1750 kernel/workqueue.c:2264 #1: ffffc900049dfda8 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work+0x8a1/0x1750 kernel/workqueue.c:2268 task:kworker/1:8 state:D stack:25888 pid:5220 ppid:2 flags:0x00004000 Workqueue: events pwq_unbound_release_workfn Call Trace: context_switch kernel/sched/core.c:5301 [inline] __schedule+0x25d0/0x5a70 kernel/sched/core.c:6619 schedule+0xde/0x1b0 kernel/sched/core.c:6695 exp_funnel_lock kernel/rcu/tree_exp.h:316 [inline] synchronize_rcu_expedited+0x706/0x770 kernel/rcu/tree_exp.h:992 synchronize_rcu+0x302/0x3b0 kernel/rcu/tree.c:3482 lockdep_unregister_key+0x282/0x460 kernel/locking/lockdep.c:6362 wq_unregister_lockdep kernel/workqueue.c:3501 [inline] pwq_unbound_release_workfn+0x258/0x340 kernel/workqueue.c:3739 process_one_work+0x9bf/0x1750 kernel/workqueue.c:2293 worker_thread+0x669/0x1090 kernel/workqueue.c:2440 kthread+0x2e8/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 2 locks held by kworker/1:8/5220: #0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x86d/0x1750 kernel/workqueue.c:2264 #1: ffffc90004a6fda8 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x8a1/0x1750 kernel/workqueue.c:2268 task:kworker/1:9 state:D stack:28224 pid:5243 ppid:2 flags:0x00004000 Workqueue: events pwq_unbound_release_workfn Call Trace: context_switch kernel/sched/core.c:5301 [inline] __schedule+0x25d0/0x5a70 kernel/sched/core.c:6619 schedule+0xde/0x1b0 kernel/sched/core.c:6695 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6754 __mutex_lock_common kernel/locking/mutex.c:679 [inline] __mutex_lock+0xa48/0x1360 kernel/locking/mutex.c:747 exp_funnel_lock kernel/rcu/tree_exp.h:325 [inline] synchronize_rcu_expedited+0x400/0x770 kernel/rcu/tree_exp.h:992 synchronize_rcu+0x302/0x3b0 kernel/rcu/tree.c:3482 lockdep_unregister_key+0x282/0x460 kernel/locking/lockdep.c:6362 wq_unregister_lockdep kernel/workqueue.c:3501 [inline] pwq_unbound_release_workfn+0x258/0x340 kernel/workqueue.c:3739 process_one_work+0x9bf/0x1750 kernel/workqueue.c:2293 worker_thread+0x669/0x1090 kernel/workqueue.c:2440 kthread+0x2e8/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 3 locks held by kworker/1:9/5243: #0: ffff888012470d38 ( (wq_completion)events ){+.+.}-{0:0} , at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] , at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] , at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] , at: set_work_data kernel/workqueue.c:636 [inline] , at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] , at: process_one_work+0x86d/0x1750 kernel/workqueue.c:2264 #1: ffffc90004a9fda8 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x8a1/0x1750 kernel/workqueue.c:2268 #2: ffffffff8c79f138 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:325 [inline] #2: ffffffff8c79f138 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x400/0x770 kernel/rcu/tree_exp.h:992 task:kworker/u4:10 state:D stack:23168 pid:5774 ppid:2 flags:0x00004000 Workqueue: netns cleanup_net Call Trace: context_switch kernel/sched/core.c:5301 [inline] __schedule+0x25d0/0x5a70 kernel/sched/core.c:6619 schedule+0xde/0x1b0 kernel/sched/core.c:6695 synchronize_rcu_expedited+0x5e2/0x770 kernel/rcu/tree_exp.h:1007 synchronize_rcu+0x302/0x3b0 kernel/rcu/tree.c:3482 synchronize_net+0x4e/0x60 net/core/dev.c:10749 nf_conntrack_cleanup_net_list+0x9e/0x5d0 net/netfilter/nf_conntrack_core.c:2555 ops_exit_list+0x125/0x170 net/core/net_namespace.c:174 cleanup_net+0x4ee/0xb10 net/core/net_namespace.c:606 process_one_work+0x9bf/0x1750 kernel/workqueue.c:2293 worker_thread+0x669/0x1090 kernel/workqueue.c:2440 kthread+0x2e8/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 4 locks held by kworker/u4:10/5774: #0: ffff8880125df938 ((wq_completion)netns){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff8880125df938 ((wq_completion)netns){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff8880125df938 ((wq_completion)netns){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff8880125df938 ((wq_completion)netns){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff8880125df938 ((wq_completion)netns){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff8880125df938 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x86d/0x1750 kernel/workqueue.c:2264 #1: ffffc9000c647da8 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x8a1/0x1750 kernel/workqueue.c:2268 #2: ffffffff8e0b3510 ( pernet_ops_rwsem ){++++}-{3:3} , at: cleanup_net+0x9f/0xb10 net/core/net_namespace.c:568 #3: ffffffff8c79f138 (rcu_state.exp_mutex ){+.+.}-{3:3} , at: exp_funnel_lock kernel/rcu/tree_exp.h:293 [inline] , at: synchronize_rcu_expedited+0x658/0x770 kernel/rcu/tree_exp.h:992 task:syz-executor.1 state:D stack:28184 pid:6138 ppid:5115 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:5301 [inline] __schedule+0x25d0/0x5a70 kernel/sched/core.c:6619 schedule+0xde/0x1b0 kernel/sched/core.c:6695 rwsem_down_read_slowpath+0x5a7/0xb20 kernel/locking/rwsem.c:1095 __down_read_common kernel/locking/rwsem.c:1260 [inline] __down_read kernel/locking/rwsem.c:1269 [inline] down_read+0xe6/0x450 kernel/locking/rwsem.c:1511 mmap_read_lock include/linux/mmap_lock.h:117 [inline] do_user_addr_fault+0xa51/0x1210 arch/x86/mm/fault.c:1379 handle_page_fault arch/x86/mm/fault.c:1519 [inline] exc_page_fault+0x98/0x170 arch/x86/mm/fault.c:1575 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570 RIP: 0033:0x7f7a544276c6 RSP: 002b:00007fff0aca9988 EFLAGS: 00010287 RAX: 0000001b32622000 RBX: 00007f7a545ac018 RCX: 0000001b32620000 RDX: 0000001b32622004 RSI: 0000001b326217a0 RDI: 00000000324f59f0 RBP: 00000000324f59f0 R08: 0000001b32a20000 R09: 00000000324f59f4 R10: 00007fff0ad6b090 R11: 0000000000012500 R12: 00007f7a545a0000 R13: 0000000000000001 R14: 00000000000030fb R15: ffffffff89b98eca 1 lock held by syz-executor.1/6138: #0: ffff88807a628198 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_lock include/linux/mmap_lock.h:117 [inline] #0: ffff88807a628198 (&mm->mmap_lock){++++}-{3:3}, at: do_user_addr_fault+0xa51/0x1210 arch/x86/mm/fault.c:1379 task:syz-executor.1 state:R running task stack:26944 pid:6140 ppid:5115 flags:0x00004006 Call Trace: context_switch kernel/sched/core.c:5301 [inline] __schedule+0x25d0/0x5a70 kernel/sched/core.c:6619 2 locks held by syz-executor.1/6140: task:kworker/1:10 state:D stack:29296 pid:7200 ppid:2 flags:0x00004000 Workqueue: events pwq_unbound_release_workfn Call Trace: context_switch kernel/sched/core.c:5301 [inline] __schedule+0x25d0/0x5a70 kernel/sched/core.c:6619 schedule+0xde/0x1b0 kernel/sched/core.c:6695 exp_funnel_lock kernel/rcu/tree_exp.h:316 [inline] synchronize_rcu_expedited+0x706/0x770 kernel/rcu/tree_exp.h:992 synchronize_rcu+0x302/0x3b0 kernel/rcu/tree.c:3482 lockdep_unregister_key+0x282/0x460 kernel/locking/lockdep.c:6362 wq_unregister_lockdep kernel/workqueue.c:3501 [inline] pwq_unbound_release_workfn+0x258/0x340 kernel/workqueue.c:3739 process_one_work+0x9bf/0x1750 kernel/workqueue.c:2293 worker_thread+0x669/0x1090 kernel/workqueue.c:2440 kthread+0x2e8/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 2 locks held by kworker/1:10/7200: #0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x86d/0x1750 kernel/workqueue.c:2264 #1: ffffc900175e7da8 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x8a1/0x1750 kernel/workqueue.c:2268 task:kworker/1:11 state:D stack:28304 pid:7201 ppid:2 flags:0x00004000 Workqueue: events pwq_unbound_release_workfn Call Trace: context_switch kernel/sched/core.c:5301 [inline] __schedule+0x25d0/0x5a70 kernel/sched/core.c:6619 schedule+0xde/0x1b0 kernel/sched/core.c:6695 exp_funnel_lock kernel/rcu/tree_exp.h:316 [inline] synchronize_rcu_expedited+0x706/0x770 kernel/rcu/tree_exp.h:992 synchronize_rcu+0x302/0x3b0 kernel/rcu/tree.c:3482 lockdep_unregister_key+0x282/0x460 kernel/locking/lockdep.c:6362 wq_unregister_lockdep kernel/workqueue.c:3501 [inline] pwq_unbound_release_workfn+0x258/0x340 kernel/workqueue.c:3739 process_one_work+0x9bf/0x1750 kernel/workqueue.c:2293 worker_thread+0x669/0x1090 kernel/workqueue.c:2440 kthread+0x2e8/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 2 locks held by kworker/1:11/7201: #0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x86d/0x1750 kernel/workqueue.c:2264 #1: ffffc90017597da8 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x8a1/0x1750 kernel/workqueue.c:2268 task:kworker/1:12 state:D stack:28304 pid:7481 ppid:2 flags:0x00004000 Workqueue: events pwq_unbound_release_workfn Call Trace: context_switch kernel/sched/core.c:5301 [inline] __schedule+0x25d0/0x5a70 kernel/sched/core.c:6619 schedule+0xde/0x1b0 kernel/sched/core.c:6695 exp_funnel_lock kernel/rcu/tree_exp.h:316 [inline] synchronize_rcu_expedited+0x706/0x770 kernel/rcu/tree_exp.h:992