------------[ cut here ]------------
workqueue: cannot queue hci_cmd_timeout on wq hci4
WARNING: CPU: 0 PID: 8300 at kernel/workqueue.c:2258 __queue_work+0xe10/0x1210 kernel/workqueue.c:2256
Modules linked in:
CPU: 0 UID: 0 PID: 8300 Comm: syz.2.256 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:2256
lr : __queue_work+0xe10/0x1210 kernel/workqueue.c:2256
sp : ffff800097927b20
x29: ffff800097927b70 x28: dfff800000000000 x27: ffff700012f24f84
x26: 0000000000000008 x25: dfff800000000000 x24: ffff0000ca42f800
x23: ffff0000ca42f9c0 x22: 0000000000000100 x21: 1fffe00019485f38
x20: ffff800092bf9000 x19: ffff0000dd7e4990 x18: 1fffe000337db690
x17: ffff80010ca0e000 x16: ffff800082de9540 x15: 0000000000000001
x14: 1fffe000337db6fa x13: 0000000000000000 x12: 0000000000000000
x11: ffff6000337db6fb x10: 0000000000ff0100 x9 : 04c9ce5121213200
x8 : 04c9ce5121213200 x7 : ffff8000805638d4 x6 : 0000000000000000
x5 : 0000000000000001 x4 : 0000000000000000 x3 : ffff8000807d4f2c
x2 : 0000000000000001 x1 : 0000000100000100 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)
 lock_acquire+0x178/0x2e0 kernel/locking/lockdep.c:5871 (P)
 touch_wq_lockdep_map+0xa8/0x164 kernel/workqueue.c:3936
 __flush_workqueue+0xfc/0x109c kernel/workqueue.c:3978
 drain_workqueue+0xa4/0x310 kernel/workqueue.c:4142
 hci_dev_close_sync+0x4b8/0x1154 net/bluetooth/hci_sync.c:5289
 hci_dev_do_close net/bluetooth/hci_core.c:501 [inline]
 hci_unregister_dev+0x204/0x4c0 net/bluetooth/hci_core.c:2715
 vhci_release+0x12c/0x17c drivers/bluetooth/hci_vhci.c:690
 __fput+0x340/0x75c fs/file_table.c:468
 ____fput+0x20/0x58 fs/file_table.c:496
 task_work_run+0x1dc/0x260 kernel/task_work.c:227
 exit_task_work include/linux/task_work.h:40 [inline]
 do_exit+0x524/0x1a14 kernel/exit.c:966
 do_group_exit+0x194/0x22c kernel/exit.c:1107
 get_signal+0x11dc/0x12f8 kernel/signal.c:3034
 arch_do_signal_or_restart+0x274/0x4414 arch/arm64/kernel/signal.c:1619
 exit_to_user_mode_loop+0x7c/0x178 kernel/entry/common.c:40
 exit_to_user_mode_prepare include/linux/irq-entry-common.h:225 [inline]
 arm64_exit_to_user_mode arch/arm64/kernel/entry-common.c:103 [inline]
 el0_svc+0x170/0x254 arch/arm64/kernel/entry-common.c:747
 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:765
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596
irq event stamp: 2703
hardirqs last  enabled at (2702): [<ffff8000803d6b84>] handle_softirqs+0x1f4/0xc88 kernel/softirq.c:606
hardirqs last disabled at (2703): [<ffff80008ae11ac4>] __raw_spin_lock_irq include/linux/spinlock_api_smp.h:117 [inline]
hardirqs last disabled at (2703): [<ffff80008ae11ac4>] _raw_spin_lock_irq+0x28/0x70 kernel/locking/spinlock.c:170
softirqs last  enabled at (2066): [<ffff8000803d7488>] softirq_handle_end kernel/softirq.c:468 [inline]
softirqs last  enabled at (2066): [<ffff8000803d7488>] handle_softirqs+0xaf8/0xc88 kernel/softirq.c:650
softirqs last disabled at (2701): [<ffff800080022024>] __do_softirq+0x14/0x20 kernel/softirq.c:656
---[ end trace 0000000000000000 ]---
vkms_vblank_simulate: vblank timer overrun
F2FS-fs (loop1): inject read IO error in f2fs_read_end_io of bio_endio+0x858/0x894 block/bio.c:1672