------------[ cut here ]------------ workqueue: cannot queue hci_cmd_timeout on wq hci0 WARNING: CPU: 1 PID: 3 at kernel/workqueue.c:2256 __queue_work+0xe10/0x1210 kernel/workqueue.c:2254 Modules linked in: CPU: 1 UID: 0 PID: 3 Comm: pool_workqueue_ Not tainted syzkaller #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 pstate: 634000c5 (nZCv daIF +PAN -UAO +TCO +DIT -SSBS BTYPE=--) pc : __queue_work+0xe10/0x1210 kernel/workqueue.c:2254 lr : __queue_work+0xe10/0x1210 kernel/workqueue.c:2254 sp : ffff8000978d7b20 x29: ffff8000978d7b70 x28: dfff800000000000 x27: ffff700012f1af84 x26: 0000000000000008 x25: dfff800000000000 x24: ffff0000c8a61000 x23: ffff0000c8a611c0 x22: 0000000000000100 x21: 1fffe0001914c238 x20: ffff800092bb0000 x19: ffff0000df3d4988 x18: 1fffe000337ed688 x17: ffff80010cab5000 x16: ffff80008ad3f804 x15: 0000000000000001 x14: 1ffff00012229558 x13: 0000000000000000 x12: 0000000000000000 x11: ffff700012229559 x10: 0000000000ff0100 x9 : c11d82bfec82f300 x8 : c11d82bfec82f300 x7 : ffff800080561378 x6 : 0000000000000000 x5 : 0000000000000001 x4 : 0000000000000000 x3 : ffff8000807cf24c x2 : 0000000000000002 x1 : 0000000000000100 x0 : 0000000000000000 Call trace: __queue_work+0xe10/0x1210 kernel/workqueue.c:2254 (P) delayed_work_timer_fn+0x74/0x90 kernel/workqueue.c:2485 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:579 __do_softirq+0x14/0x20 kernel/softirq.c:613 ____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:460 [inline] __irq_exit_rcu+0x1b0/0x478 kernel/softirq.c:680 irq_exit_rcu+0x14/0x84 kernel/softirq.c:696 __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:4816 [inline] pwq_release_workfn+0x5ac/0x6e4 kernel/workqueue.c:5112 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: 24187 hardirqs last enabled at (24186): [] handle_softirqs+0x1f4/0xc88 kernel/softirq.c:563 hardirqs last disabled at (24187): [] __raw_spin_lock_irq include/linux/spinlock_api_smp.h:117 [inline] hardirqs last disabled at (24187): [] _raw_spin_lock_irq+0x28/0x70 kernel/locking/spinlock.c:170 softirqs last enabled at (24132): [] softirq_handle_end kernel/softirq.c:425 [inline] softirqs last enabled at (24132): [] handle_softirqs+0xaf8/0xc88 kernel/softirq.c:607 softirqs last disabled at (24185): [] __do_softirq+0x14/0x20 kernel/softirq.c:613 ---[ end trace 0000000000000000 ]--- vkms_vblank_simulate: vblank timer overrun IPVS: lc: UDP 224.0.0.2:0 - no destination available IPVS: lc: UDP 224.0.0.2:0 - no destination available IPVS: lc: UDP 224.0.0.2:0 - no destination available IPVS: lc: UDP 224.0.0.2:0 - no destination available IPVS: lc: UDP 224.0.0.2:0 - no destination available IPVS: lc: UDP 224.0.0.2:0 - no destination available IPVS: lc: UDP 224.0.0.2:0 - no destination available IPVS: lc: UDP 224.0.0.2:0 - no destination available IPVS: lc: UDP 224.0.0.2:0 - no destination available IPVS: lc: UDP 224.0.0.2:0 - no destination available