------------[ cut here ]------------ workqueue: cannot queue hci_cmd_timeout on wq hci1 WARNING: CPU: 0 PID: 3 at kernel/workqueue.c:2258 __queue_work+0xe10/0x1210 kernel/workqueue.c:2256 Modules linked in: CPU: 0 UID: 0 PID: 3 Comm: pool_workqueue_ Not tainted syzkaller #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 pstate: 634000c5 (nZCv daIF +PAN -UAO +TCO +DIT -SSBS BTYPE=--) pc : __queue_work+0xe10/0x1210 kernel/workqueue.c:2256 lr : __queue_work+0xe10/0x1210 kernel/workqueue.c:2256 sp : ffff800097927b20 x29: ffff800097927b70 x28: dfff800000000000 x27: ffff700012f24f84 x26: 0000000000000008 x25: dfff800000000000 x24: ffff0000caaa5800 x23: ffff0000caaa59c0 x22: 0000000000000100 x21: 1fffe00019554b38 x20: ffff800092bf7000 x19: ffff0000cb13c990 x18: 1fffe000337db690 x17: ffff80010ca0e000 x16: ffff800082deb6c0 x15: 0000000000000001 x14: 1ffff00012233aa4 x13: 0000000000000000 x12: 0000000000000000 x11: ffff700012233aa5 x10: 0000000000ff0100 x9 : e82cb7284cd38200 x8 : e82cb7284cd38200 x7 : ffff800080564a40 x6 : 0000000000000000 x5 : 0000000000000001 x4 : 0000000000000000 x3 : ffff8000807d5f04 x2 : 0000000000000002 x1 : 0000000000000100 x0 : 0000000000000000 Call trace: __queue_work+0xe10/0x1210 kernel/workqueue.c:2256 (P) delayed_work_timer_fn+0x74/0x90 kernel/workqueue.c:2487 call_timer_fn+0x1b4/0x818 kernel/time/timer.c:1747 expire_timers kernel/time/timer.c:1793 [inline] __run_timers kernel/time/timer.c:2372 [inline] __run_timer_base+0x54c/0x76c kernel/time/timer.c:2384 run_timer_base kernel/time/timer.c:2393 [inline] run_timer_softirq+0xcc/0x194 kernel/time/timer.c:2403 handle_softirqs+0x328/0xc88 kernel/softirq.c:622 __do_softirq+0x14/0x20 kernel/softirq.c:656 ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:68 call_on_irq_stack+0x30/0x48 arch/arm64/kernel/entry.S:891 do_softirq_own_stack+0x20/0x2c arch/arm64/kernel/irq.c:73 invoke_softirq kernel/softirq.c:503 [inline] __irq_exit_rcu+0x1b0/0x478 kernel/softirq.c:723 irq_exit_rcu+0x14/0x84 kernel/softirq.c:739 __el1_irq arch/arm64/kernel/entry-common.c:520 [inline] el1_interrupt+0x40/0x60 arch/arm64/kernel/entry-common.c:532 el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:537 el1h_64_irq+0x6c/0x70 arch/arm64/kernel/entry.S:592 __daif_local_irq_restore arch/arm64/include/asm/irqflags.h:175 [inline] (P) arch_local_irq_restore arch/arm64/include/asm/irqflags.h:195 [inline] (P) lockdep_unregister_key+0x2e8/0x3cc kernel/locking/lockdep.c:6614 (P) wq_unregister_lockdep kernel/workqueue.c:4848 [inline] pwq_release_workfn+0x5ac/0x6e4 kernel/workqueue.c:5144 kthread_worker_fn+0x43c/0xb34 kernel/kthread.c:1010 kthread+0x5fc/0x75c kernel/kthread.c:463 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:844 irq event stamp: 10303 hardirqs last enabled at (10302): [] __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:159 [inline] hardirqs last enabled at (10302): [] _raw_spin_unlock_irq+0x30/0x80 kernel/locking/spinlock.c:202 hardirqs last disabled at (10303): [] __raw_spin_lock_irq include/linux/spinlock_api_smp.h:117 [inline] hardirqs last disabled at (10303): [] _raw_spin_lock_irq+0x28/0x70 kernel/locking/spinlock.c:170 softirqs last enabled at (10254): [] softirq_handle_end kernel/softirq.c:468 [inline] softirqs last enabled at (10254): [] handle_softirqs+0xaf8/0xc88 kernel/softirq.c:650 softirqs last disabled at (10291): [] __do_softirq+0x14/0x20 kernel/softirq.c:656 ---[ end trace 0000000000000000 ]--- vkms_vblank_simulate: vblank timer overrun