===================================================== WARNING: HARDIRQ-safe -> HARDIRQ-unsafe lock order detected 6.8.0-syzkaller-08951-gfe46a7dd189e #0 Not tainted ----------------------------------------------------- pool_workqueue_/3 [HC0[0]:SC0[2]:HE0:SE0] is trying to acquire: ffff88802c466200 (&stab->lock){+...}-{2:2}, at: spin_lock_bh include/linux/spinlock.h:356 [inline] ffff88802c466200 (&stab->lock){+...}-{2:2}, at: __sock_map_delete net/core/sock_map.c:414 [inline] ffff88802c466200 (&stab->lock){+...}-{2:2}, at: sock_map_delete_elem+0xc8/0x150 net/core/sock_map.c:446 and this task is already holding: ffff8880172e8120 ((worker)->lock){....}-{2:2}, at: kthread_queue_work+0x23/0x170 kernel/kthread.c:1019 which would create a new lock dependency: ((worker)->lock){....}-{2:2} -> (&stab->lock){+...}-{2:2} but this new dependency connects a HARDIRQ-irq-safe lock: (&pool->lock){-.-.}-{2:2} ... which became HARDIRQ-irq-safe at: lock_acquire kernel/locking/lockdep.c:5754 [inline] lock_acquire+0x1b1/0x540 kernel/locking/lockdep.c:5719 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline] _raw_spin_lock+0x2e/0x40 kernel/locking/spinlock.c:154 __queue_work+0x39e/0x1170 kernel/workqueue.c:2360 queue_work_on+0xf4/0x120 kernel/workqueue.c:2435 tick_nohz_activate kernel/time/tick-sched.c:1491 [inline] tick_setup_sched_timer+0x47c/0x790 kernel/time/tick-sched.c:1592 hrtimer_switch_to_hres kernel/time/hrtimer.c:750 [inline] hrtimer_run_queues+0x33c/0x450 kernel/time/hrtimer.c:1918 run_local_timers kernel/time/timer.c:2453 [inline] update_process_times+0xcf/0x220 kernel/time/timer.c:2475 tick_periodic+0x7e/0x230 kernel/time/tick-common.c:100 tick_handle_periodic+0x45/0x120 kernel/time/tick-common.c:112 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline] __sysvec_apic_timer_interrupt+0x112/0x410 arch/x86/kernel/apic/apic.c:1049 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline] sysvec_apic_timer_interrupt+0x90/0xb0 arch/x86/kernel/apic/apic.c:1043 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 lock_acquire+0x1f2/0x540 kernel/locking/lockdep.c:5722 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline] _raw_spin_lock+0x2e/0x40 kernel/locking/spinlock.c:154 spin_lock include/linux/spinlock.h:351 [inline] d_alloc+0x6a/0x1e0 fs/dcache.c:1707 d_alloc_parallel+0xe9/0x12b0 fs/dcache.c:2462 __lookup_slow+0x194/0x460 fs/namei.c:1677 lookup_one_len+0x181/0x1b0 fs/namei.c:2756 tracefs_start_creating+0x110/0x2a0 fs/tracefs/inode.c:479 tracefs_create_file+0x9d/0x810 fs/tracefs/inode.c:567 trace_create_file+0x33/0x70 kernel/trace/trace.c:9167 event_trace_init+0xe5/0x1f0 kernel/trace/trace_events.c:4097 tracer_init_tracefs_work_func+0x12/0x3c0 kernel/trace/trace.c:10175 process_one_work+0x9ac/0x1a60 kernel/workqueue.c:3254 process_scheduled_works kernel/workqueue.c:3335 [inline] worker_thread+0x6c8/0xf70 kernel/workqueue.c:3416 kthread+0x2c4/0x3a0 kernel/kthread.c:388 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243 to a HARDIRQ-irq-unsafe lock: (&stab->lock){+...}-{2:2} ... which became HARDIRQ-irq-unsafe at: ... lock_acquire kernel/locking/lockdep.c:5754 [inline] lock_acquire+0x1b1/0x540 kernel/locking/lockdep.c:5719 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:126 [inline] _raw_spin_lock_bh+0x33/0x40 kernel/locking/spinlock.c:178 spin_lock_bh include/linux/spinlock.h:356 [inline] __sock_map_delete net/core/sock_map.c:414 [inline] sock_map_delete_elem+0xc8/0x150 net/core/sock_map.c:446 0xffffffffa00008f1 bpf_dispatcher_nop_func include/linux/bpf.h:1234 [inline] __bpf_prog_run include/linux/filter.h:657 [inline] bpf_prog_run include/linux/filter.h:664 [inline] __bpf_trace_run kernel/trace/bpf_trace.c:2381 [inline] bpf_trace_run2+0x154/0x420 kernel/trace/bpf_trace.c:2420 trace_sys_enter include/trace/events/syscalls.h:18 [inline] syscall_trace_enter+0x1c5/0x210 kernel/entry/common.c:61 syscall_enter_from_user_mode_work include/linux/entry-common.h:168 [inline] syscall_enter_from_user_mode include/linux/entry-common.h:198 [inline] do_syscall_64+0x1f6/0x260 arch/x86/entry/common.c:79 entry_SYSCALL_64_after_hwframe+0x6d/0x75 other info that might help us debug this: Chain exists of: &pool->lock --> (worker)->lock --> &stab->lock Possible interrupt unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&stab->lock); local_irq_disable(); lock(&pool->lock); lock((worker)->lock); lock(&pool->lock); *** DEADLOCK *** 3 locks held by pool_workqueue_/3: #0: ffffffff8d7c05b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:323 [inline] #0: ffffffff8d7c05b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x403/0x7a0 kernel/rcu/tree_exp.h:939 #1: ffff8880172e8120 ((worker)->lock){....}-{2:2}, at: kthread_queue_work+0x23/0x170 kernel/kthread.c:1019 #2: ffffffff8d7b49e0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:298 [inline] #2: ffffffff8d7b49e0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:750 [inline] #2: ffffffff8d7b49e0 (rcu_read_lock){....}-{1:2}, at: __bpf_trace_run kernel/trace/bpf_trace.c:2380 [inline] #2: ffffffff8d7b49e0 (rcu_read_lock){....}-{1:2}, at: bpf_trace_run2+0xe4/0x420 kernel/trace/bpf_trace.c:2420 the dependencies between HARDIRQ-irq-safe lock and the holding lock: -> (&pool->lock){-.-.}-{2:2} { IN-HARDIRQ-W at: lock_acquire kernel/locking/lockdep.c:5754 [inline] lock_acquire+0x1b1/0x540 kernel/locking/lockdep.c:5719 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline] _raw_spin_lock+0x2e/0x40 kernel/locking/spinlock.c:154 __queue_work+0x39e/0x1170 kernel/workqueue.c:2360 queue_work_on+0xf4/0x120 kernel/workqueue.c:2435 tick_nohz_activate kernel/time/tick-sched.c:1491 [inline] tick_setup_sched_timer+0x47c/0x790 kernel/time/tick-sched.c:1592 hrtimer_switch_to_hres kernel/time/hrtimer.c:750 [inline] hrtimer_run_queues+0x33c/0x450 kernel/time/hrtimer.c:1918 run_local_timers kernel/time/timer.c:2453 [inline] update_process_times+0xcf/0x220 kernel/time/timer.c:2475 tick_periodic+0x7e/0x230 kernel/time/tick-common.c:100 tick_handle_periodic+0x45/0x120 kernel/time/tick-common.c:112 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline] __sysvec_apic_timer_interrupt+0x112/0x410 arch/x86/kernel/apic/apic.c:1049 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline] sysvec_apic_timer_interrupt+0x90/0xb0 arch/x86/kernel/apic/apic.c:1043 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 lock_acquire+0x1f2/0x540 kernel/locking/lockdep.c:5722 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline] _raw_spin_lock+0x2e/0x40 kernel/locking/spinlock.c:154 spin_lock include/linux/spinlock.h:351 [inline] d_alloc+0x6a/0x1e0 fs/dcache.c:1707 d_alloc_parallel+0xe9/0x12b0 fs/dcache.c:2462 __lookup_slow+0x194/0x460 fs/namei.c:1677 lookup_one_len+0x181/0x1b0 fs/namei.c:2756 tracefs_start_creating+0x110/0x2a0 fs/tracefs/inode.c:479 tracefs_create_file+0x9d/0x810 fs/tracefs/inode.c:567 trace_create_file+0x33/0x70 kernel/trace/trace.c:9167 event_trace_init+0xe5/0x1f0 kernel/trace/trace_events.c:4097 tracer_init_tracefs_work_func+0x12/0x3c0 kernel/trace/trace.c:10175 process_one_work+0x9ac/0x1a60 kernel/workqueue.c:3254 process_scheduled_works kernel/workqueue.c:3335 [inline] worker_thread+0x6c8/0xf70 kernel/workqueue.c:3416 kthread+0x2c4/0x3a0 kernel/kthread.c:388 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243 IN-SOFTIRQ-W at: lock_acquire kernel/locking/lockdep.c:5754 [inline] lock_acquire+0x1b1/0x540 kernel/locking/lockdep.c:5719 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline] _raw_spin_lock+0x2e/0x40 kernel/locking/spinlock.c:154 __queue_work+0x39e/0x1170 kernel/workqueue.c:2360 call_timer_fn+0x1a3/0x5b0 kernel/time/timer.c:1792 expire_timers kernel/time/timer.c:1838 [inline] __run_timers+0x567/0xab0 kernel/time/timer.c:2408 __run_timer_base kernel/time/timer.c:2419 [inline] __run_timer_base kernel/time/timer.c:2412 [inline] run_timer_base+0x111/0x190 kernel/time/timer.c:2428 run_timer_softirq+0x1a/0x40 kernel/time/timer.c:2438 __do_softirq+0x21b/0x8de kernel/softirq.c:554 invoke_softirq kernel/softirq.c:428 [inline] __irq_exit_rcu kernel/softirq.c:633 [inline] irq_exit_rcu+0xb9/0x120 kernel/softirq.c:645 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline] sysvec_apic_timer_interrupt+0x95/0xb0 arch/x86/kernel/apic/apic.c:1043 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 native_safe_halt arch/x86/include/asm/irqflags.h:48 [inline] arch_safe_halt arch/x86/include/asm/irqflags.h:86 [inline] default_idle+0xf/0x20 arch/x86/kernel/process.c:742 default_idle_call+0x6d/0xb0 kernel/sched/idle.c:117 cpuidle_idle_call kernel/sched/idle.c:191 [inline] do_idle+0x32c/0x3f0 kernel/sched/idle.c:332 cpu_startup_entry+0x4f/0x60 kernel/sched/idle.c:430 rest_init+0x16f/0x2b0 init/main.c:730 arch_call_rest_init+0x13/0x40 init/main.c:831 start_kernel+0x3a3/0x490 init/main.c:1077 x86_64_start_reservations+0x18/0x30 arch/x86/kernel/head64.c:509 x86_64_start_kernel+0xb2/0xc0 arch/x86/kernel/head64.c:490 common_startup_64+0x13e/0x148 INITIAL USE at: lock_acquire kernel/locking/lockdep.c:5754 [inline] lock_acquire+0x1b1/0x540 kernel/locking/lockdep.c:5719 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline] _raw_spin_lock+0x2e/0x40 kernel/locking/spinlock.c:154 __queue_work+0x39e/0x1170 kernel/workqueue.c:2360 queue_work_on+0xf4/0x120 kernel/workqueue.c:2435 queue_work include/linux/workqueue.h:605 [inline] start_poll_synchronize_rcu_expedited+0x147/0x180 kernel/rcu/tree_exp.h:1017 rcu_init+0x1625/0x20c0 kernel/rcu/tree.c:5240 start_kernel+0x19e/0x490 init/main.c:969 x86_64_start_reservations+0x18/0x30 arch/x86/kernel/head64.c:509 x86_64_start_kernel+0xb2/0xc0 arch/x86/kernel/head64.c:490 common_startup_64+0x13e/0x148 } ... key at: [] __key.17+0x0/0x40 -> ((worker)->lock){....}-{2:2} { INITIAL USE at: lock_acquire kernel/locking/lockdep.c:5754 [inline] lock_acquire+0x1b1/0x540 kernel/locking/lockdep.c:5719 __raw_spin_lock_irq include/linux/spinlock_api_smp.h:119 [inline] _raw_spin_lock_irq+0x36/0x50 kernel/locking/spinlock.c:170 kthread_worker_fn+0x49d/0xab0 kernel/kthread.c:828 kthread+0x2c4/0x3a0 kernel/kthread.c:388 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243 } ... key at: [] __key.0+0x0/0x40 ... acquired at: __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x3a/0x60 kernel/locking/spinlock.c:162 kthread_queue_work+0x23/0x170 kernel/kthread.c:1019 put_pwq+0xf8/0x130 kernel/workqueue.c:1642 put_pwq_unlocked kernel/workqueue.c:1659 [inline] put_pwq_unlocked kernel/workqueue.c:1651 [inline] apply_wqattrs_cleanup.part.0+0xd7/0x2b0 kernel/workqueue.c:5098 apply_wqattrs_cleanup kernel/workqueue.c:5097 [inline] apply_workqueue_attrs_locked+0x9e/0xe0 kernel/workqueue.c:5219 apply_workqueue_attrs+0x2f/0x50 kernel/workqueue.c:5249 padata_setup_cpumasks kernel/padata.c:435 [inline] padata_alloc+0x225/0x410 kernel/padata.c:1014 pcrypt_init_padata+0x19/0x120 crypto/pcrypt.c:327 pcrypt_init+0x66/0x110 crypto/pcrypt.c:352 do_one_initcall+0x12b/0x690 init/main.c:1241 do_initcall_level init/main.c:1303 [inline] do_initcalls init/main.c:1319 [inline] do_basic_setup init/main.c:1338 [inline] kernel_init_freeable+0x69d/0xc40 init/main.c:1550 kernel_init+0x1c/0x2a0 init/main.c:1439 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243 the dependencies between the lock to be acquired and HARDIRQ-irq-unsafe lock: -> (&stab->lock){+...}-{2:2} { HARDIRQ-ON-W at: lock_acquire kernel/locking/lockdep.c:5754 [inline] lock_acquire+0x1b1/0x540 kernel/locking/lockdep.c:5719 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:126 [inline] _raw_spin_lock_bh+0x33/0x40 kernel/locking/spinlock.c:178 spin_lock_bh include/linux/spinlock.h:356 [inline] __sock_map_delete net/core/sock_map.c:414 [inline] sock_map_delete_elem+0xc8/0x150 net/core/sock_map.c:446 0xffffffffa00008f1 bpf_dispatcher_nop_func include/linux/bpf.h:1234 [inline] __bpf_prog_run include/linux/filter.h:657 [inline] bpf_prog_run include/linux/filter.h:664 [inline] __bpf_trace_run kernel/trace/bpf_trace.c:2381 [inline] bpf_trace_run2+0x154/0x420 kernel/trace/bpf_trace.c:2420 trace_sys_enter include/trace/events/syscalls.h:18 [inline] syscall_trace_enter+0x1c5/0x210 kernel/entry/common.c:61 syscall_enter_from_user_mode_work include/linux/entry-common.h:168 [inline] syscall_enter_from_user_mode include/linux/entry-common.h:198 [inline] do_syscall_64+0x1f6/0x260 arch/x86/entry/common.c:79 entry_SYSCALL_64_after_hwframe+0x6d/0x75 INITIAL USE at: lock_acquire kernel/locking/lockdep.c:5754 [inline] lock_acquire+0x1b1/0x540 kernel/locking/lockdep.c:5719 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:126 [inline] _raw_spin_lock_bh+0x33/0x40 kernel/locking/spinlock.c:178 spin_lock_bh include/linux/spinlock.h:356 [inline] __sock_map_delete net/core/sock_map.c:414 [inline] sock_map_delete_elem+0xc8/0x150 net/core/sock_map.c:446 0xffffffffa00008f1 bpf_dispatcher_nop_func include/linux/bpf.h:1234 [inline] __bpf_prog_run include/linux/filter.h:657 [inline] bpf_prog_run include/linux/filter.h:664 [inline] __bpf_trace_run kernel/trace/bpf_trace.c:2381 [inline] bpf_trace_run2+0x154/0x420 kernel/trace/bpf_trace.c:2420 trace_sys_enter include/trace/events/syscalls.h:18 [inline] syscall_trace_enter+0x1c5/0x210 kernel/entry/common.c:61 syscall_enter_from_user_mode_work include/linux/entry-common.h:168 [inline] syscall_enter_from_user_mode include/linux/entry-common.h:198 [inline] do_syscall_64+0x1f6/0x260 arch/x86/entry/common.c:79 entry_SYSCALL_64_after_hwframe+0x6d/0x75 } ... key at: [] __key.1+0x0/0x40 ... acquired at: lock_acquire kernel/locking/lockdep.c:5754 [inline] lock_acquire+0x1b1/0x540 kernel/locking/lockdep.c:5719 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:126 [inline] _raw_spin_lock_bh+0x33/0x40 kernel/locking/spinlock.c:178 spin_lock_bh include/linux/spinlock.h:356 [inline] __sock_map_delete net/core/sock_map.c:414 [inline] sock_map_delete_elem+0xc8/0x150 net/core/sock_map.c:446 bpf_prog_d247abf228e51871+0x69/0x71 bpf_dispatcher_nop_func include/linux/bpf.h:1234 [inline] __bpf_prog_run include/linux/filter.h:657 [inline] bpf_prog_run include/linux/filter.h:664 [inline] __bpf_trace_run kernel/trace/bpf_trace.c:2381 [inline] bpf_trace_run2+0x154/0x420 kernel/trace/bpf_trace.c:2420 __bpf_trace_sched_kthread_work_queue_work+0xbf/0x100 include/trace/events/sched.h:64 trace_sched_kthread_work_queue_work include/trace/events/sched.h:64 [inline] kthread_insert_work+0x29b/0x3e0 kernel/kthread.c:993 kthread_queue_work+0x104/0x170 kernel/kthread.c:1021 synchronize_rcu_expedited_queue_work kernel/rcu/tree_exp.h:469 [inline] synchronize_rcu_expedited+0x578/0x7a0 kernel/rcu/tree_exp.h:949 synchronize_rcu+0x2f9/0x3b0 kernel/rcu/tree.c:3611 wq_unregister_lockdep kernel/workqueue.c:4655 [inline] pwq_release_workfn+0x539/0x9d0 kernel/workqueue.c:4958 kthread_worker_fn+0x308/0xab0 kernel/kthread.c:841 kthread+0x2c4/0x3a0 kernel/kthread.c:388 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243 stack backtrace: CPU: 0 PID: 3 Comm: pool_workqueue_ Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:114 print_bad_irq_dependency kernel/locking/lockdep.c:2626 [inline] check_irq_usage+0xe3c/0x1490 kernel/locking/lockdep.c:2865 check_prev_add kernel/locking/lockdep.c:3138 [inline] check_prevs_add kernel/locking/lockdep.c:3253 [inline] validate_chain kernel/locking/lockdep.c:3869 [inline] __lock_acquire+0x248e/0x3b30 kernel/locking/lockdep.c:5137 lock_acquire kernel/locking/lockdep.c:5754 [inline] lock_acquire+0x1b1/0x540 kernel/locking/lockdep.c:5719 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:126 [inline] _raw_spin_lock_bh+0x33/0x40 kernel/locking/spinlock.c:178 spin_lock_bh include/linux/spinlock.h:356 [inline] __sock_map_delete net/core/sock_map.c:414 [inline] sock_map_delete_elem+0xc8/0x150 net/core/sock_map.c:446 bpf_prog_d247abf228e51871+0x69/0x71 bpf_dispatcher_nop_func include/linux/bpf.h:1234 [inline] __bpf_prog_run include/linux/filter.h:657 [inline] bpf_prog_run include/linux/filter.h:664 [inline] __bpf_trace_run kernel/trace/bpf_trace.c:2381 [inline] bpf_trace_run2+0x154/0x420 kernel/trace/bpf_trace.c:2420 __bpf_trace_sched_kthread_work_queue_work+0xbf/0x100 include/trace/events/sched.h:64 trace_sched_kthread_work_queue_work include/trace/events/sched.h:64 [inline] kthread_insert_work+0x29b/0x3e0 kernel/kthread.c:993 kthread_queue_work+0x104/0x170 kernel/kthread.c:1021 synchronize_rcu_expedited_queue_work kernel/rcu/tree_exp.h:469 [inline] synchronize_rcu_expedited+0x578/0x7a0 kernel/rcu/tree_exp.h:949 synchronize_rcu+0x2f9/0x3b0 kernel/rcu/tree.c:3611 wq_unregister_lockdep kernel/workqueue.c:4655 [inline] pwq_release_workfn+0x539/0x9d0 kernel/workqueue.c:4958 kthread_worker_fn+0x308/0xab0 kernel/kthread.c:841 kthread+0x2c4/0x3a0 kernel/kthread.c:388 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243 ------------[ cut here ]------------ raw_local_irq_restore() called with IRQs enabled WARNING: CPU: 0 PID: 3 at kernel/locking/irqflag-debug.c:10 warn_bogus_irq_restore+0x29/0x30 kernel/locking/irqflag-debug.c:10 Modules linked in: CPU: 0 PID: 3 Comm: pool_workqueue_ Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 RIP: 0010:warn_bogus_irq_restore+0x29/0x30 kernel/locking/irqflag-debug.c:10 Code: 90 f3 0f 1e fa 90 80 3d be b2 b5 04 00 74 06 90 e9 3c f8 03 00 c6 05 af b2 b5 04 01 90 48 c7 c7 00 c3 0c 8b e8 98 c2 7d f6 90 <0f> 0b 90 90 eb df 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 RSP: 0018:ffffc90000087ad8 EFLAGS: 00010286 RAX: 0000000000000000 RBX: ffff8880172e8108 RCX: ffffffff8150f3e9 RDX: ffff8880166cbc00 RSI: ffffffff8150f3f6 RDI: 0000000000000001 RBP: 0000000000000293 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000293 R13: ffff8880172e8108 R14: 0000000000000000 R15: ffff88802ddc2c78 FS: 0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f53a8344108 CR3: 000000005f4b2000 CR4: 0000000000350ef0 Call Trace: __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline] _raw_spin_unlock_irqrestore+0x74/0x80 kernel/locking/spinlock.c:194 kthread_queue_work+0xa8/0x170 kernel/kthread.c:1024 synchronize_rcu_expedited_queue_work kernel/rcu/tree_exp.h:469 [inline] synchronize_rcu_expedited+0x578/0x7a0 kernel/rcu/tree_exp.h:949 synchronize_rcu+0x2f9/0x3b0 kernel/rcu/tree.c:3611 wq_unregister_lockdep kernel/workqueue.c:4655 [inline] pwq_release_workfn+0x539/0x9d0 kernel/workqueue.c:4958 kthread_worker_fn+0x308/0xab0 kernel/kthread.c:841 kthread+0x2c4/0x3a0 kernel/kthread.c:388 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243