------------[ cut here ]------------ workqueue: cannot queue hci_cmd_timeout on wq hci3 WARNING: kernel/workqueue.c:2252 at __queue_work+0xfa0/0x121c kernel/workqueue.c:2250, CPU#0: syz-executor/7118 Modules linked in: CPU: 0 UID: 0 PID: 7118 Comm: syz-executor 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+0xfa0/0x121c kernel/workqueue.c:2250 lr : __queue_work+0xfa0/0x121c kernel/workqueue.c:2250 sp : ffff800097bc7b20 x29: ffff800097bc7b70 x28: dfff800000000000 x27: ffff700012f78f84 x26: ffff0000d0627800 x25: 0000000000000008 x24: 1fffe000199a6391 x23: dfff800000000000 x22: ffff0000d06279c0 x21: 0000000000000100 x20: ffff800092e87000 x19: ffff000123530a88 x18: 00000000ffffffff x17: ffff80010c42d000 x16: ffff800082e5e68c x15: 0000000000000001 x14: 1fffe0003377d0fa x13: 0000000000000000 x12: 0000000000000000 x11: ffff60003377d0fb x10: 0000000000ff0100 x9 : 93097fd4077aea00 x8 : 93097fd4077aea00 x7 : ffff8000805761f8 x6 : 0000000000000000 x5 : 0000000000000001 x4 : 0000000000000000 x3 : ffff8000807f1034 x2 : 0000000000000001 x1 : 0000000100000100 x0 : 0000000000000000 Call trace: __queue_work+0xfa0/0x121c kernel/workqueue.c:2250 (P) delayed_work_timer_fn+0x74/0x90 kernel/workqueue.c:2481 call_timer_fn+0x19c/0x814 kernel/time/timer.c:1748 expire_timers kernel/time/timer.c:1794 [inline] __run_timers kernel/time/timer.c:2373 [inline] __run_timer_base+0x54c/0x76c kernel/time/timer.c:2385 run_timer_base kernel/time/timer.c:2394 [inline] run_timer_softirq+0xcc/0x194 kernel/time/timer.c:2404 handle_softirqs+0x31c/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:498 [inline] el1_interrupt+0x40/0x60 arch/arm64/kernel/entry-common.c:510 el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:515 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+0x16c/0x2e0 kernel/locking/lockdep.c:5871 (P) touch_wq_lockdep_map+0xa8/0x164 kernel/workqueue.c:3940 __flush_workqueue+0xfc/0x109c kernel/workqueue.c:3982 drain_workqueue+0xa4/0x310 kernel/workqueue.c:4146 hci_dev_close_sync+0x4b8/0xfd0 net/bluetooth/hci_sync.c:5312 hci_dev_do_close net/bluetooth/hci_core.c:501 [inline] hci_unregister_dev+0x204/0x52c 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:233 exit_task_work include/linux/task_work.h:40 [inline] do_exit+0x52c/0x1a1c kernel/exit.c:971 do_group_exit+0x194/0x22c kernel/exit.c:1112 __do_sys_exit_group kernel/exit.c:1123 [inline] __se_sys_exit_group kernel/exit.c:1121 [inline] pid_child_should_wake+0x0/0x1dc kernel/exit.c:1121 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x254 arch/arm64/kernel/syscall.c:49 el0_svc_common+0xe8/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x5c/0x26c arch/arm64/kernel/entry-common.c:724 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:743 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 irq event stamp: 176607 hardirqs last enabled at (176606): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline] hardirqs last enabled at (176606): [] _raw_spin_unlock_irqrestore+0x38/0x98 kernel/locking/spinlock.c:194 hardirqs last disabled at (176607): [] __raw_spin_lock_irq include/linux/spinlock_api_smp.h:117 [inline] hardirqs last disabled at (176607): [] _raw_spin_lock_irq+0x28/0x70 kernel/locking/spinlock.c:170 softirqs last enabled at (174784): [] sock_orphan include/net/sock.h:2120 [inline] softirqs last enabled at (174784): [] sk_common_release+0x120/0x300 net/core/sock.c:4003 softirqs last disabled at (176563): [] __do_softirq+0x14/0x20 kernel/softirq.c:656 ---[ end trace 0000000000000000 ]---