------------[ cut here ]------------ WARNING: CPU: 1 PID: 4415 at kernel/workqueue.c:1441 __queue_work+0x10c8/0x136c kernel/workqueue.c:1441 Modules linked in: CPU: 1 PID: 4415 Comm: syz.3.4 Not tainted 6.1.108-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 pstate: 404000c5 (nZcv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : __queue_work+0x10c8/0x136c kernel/workqueue.c:1441 lr : __queue_work+0x10c8/0x136c kernel/workqueue.c:1441 sp : ffff800008017b50 x29: ffff800008017b90 x28: 0000000000000008 x27: dfff800000000000 x26: ffff0000d9049000 x25: dfff800000000000 x24: 0000000100000100 x23: ffff0000d90491c0 x22: ffff0000d4ef8008 x21: 1fffe0001a9df001 x20: 00000000000b0012 x19: ffff0000d9afcbc0 x18: ffff800021797060 x17: ffff80019e3f6000 x16: ffff80001228de9c x15: 0000000000000000 x14: 1ffff00002b3a0b0 x13: dfff800000000000 x12: 00000000a5a6aa42 x11: 0000000000ff0100 x10: 0000000000000000 x9 : ffff800008216a70 x8 : ffff0000d4ef8000 x7 : ffff8000083fb17c x6 : 0000000000000000 x5 : 0000000000000080 x4 : 0000000000000001 x3 : ffff8000143fa560 x2 : ffff0000d9afcbc0 x1 : 0000000000000100 x0 : 0000000000000000 Call trace: __queue_work+0x10c8/0x136c kernel/workqueue.c:1441 delayed_work_timer_fn+0x74/0x90 kernel/workqueue.c:1646 call_timer_fn+0x1c0/0xa1c kernel/time/timer.c:1504 expire_timers kernel/time/timer.c:1544 [inline] __run_timers+0x584/0x718 kernel/time/timer.c:1820 run_timer_softirq+0x7c/0x114 kernel/time/timer.c:1833 handle_softirqs+0x318/0xd58 kernel/softirq.c:571 __do_softirq+0x14/0x20 kernel/softirq.c:605 ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:80 call_on_irq_stack+0x24/0x4c arch/arm64/kernel/entry.S:893 do_softirq_own_stack+0x20/0x2c arch/arm64/kernel/irq.c:85 invoke_softirq kernel/softirq.c:452 [inline] __irq_exit_rcu+0x264/0x4d4 kernel/softirq.c:654 irq_exit_rcu+0x14/0x84 kernel/softirq.c:666 __el1_irq arch/arm64/kernel/entry-common.c:472 [inline] el1_interrupt+0x38/0x68 arch/arm64/kernel/entry-common.c:486 el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:491 el1h_64_irq+0x64/0x68 arch/arm64/kernel/entry.S:581 arch_local_irq_restore arch/arm64/include/asm/irqflags.h:122 [inline] lock_acquire+0x2ac/0x7cc kernel/locking/lockdep.c:5665 __flush_workqueue+0x14c/0x11c4 kernel/workqueue.c:2812 drain_workqueue+0xb8/0x32c kernel/workqueue.c:2977 hci_dev_close_sync+0x38c/0xf6c net/bluetooth/hci_sync.c:5051 hci_dev_do_close net/bluetooth/hci_core.c:510 [inline] hci_unregister_dev+0x200/0x4c4 net/bluetooth/hci_core.c:2710 vhci_release+0x7c/0xcc drivers/bluetooth/hci_vhci.c:573 __fput+0x1c8/0x7c8 fs/file_table.c:320 ____fput+0x20/0x30 fs/file_table.c:348 task_work_run+0x240/0x2f0 kernel/task_work.c:203 exit_task_work include/linux/task_work.h:39 [inline] do_exit+0x554/0x1a88 kernel/exit.c:871 do_group_exit+0x194/0x22c kernel/exit.c:1021 get_signal+0x14a0/0x158c kernel/signal.c:2870 do_signal arch/arm64/kernel/signal.c:1076 [inline] do_notify_resume+0x3ac/0x3474 arch/arm64/kernel/signal.c:1129 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:137 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:142 [inline] el0_svc+0x9c/0x168 arch/arm64/kernel/entry-common.c:638 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 irq event stamp: 7263 hardirqs last enabled at (7262): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline] hardirqs last enabled at (7262): [] _raw_spin_unlock_irqrestore+0x48/0xac kernel/locking/spinlock.c:194 hardirqs last disabled at (7263): [] __raw_spin_lock_irq include/linux/spinlock_api_smp.h:117 [inline] hardirqs last disabled at (7263): [] _raw_spin_lock_irq+0x34/0x9c kernel/locking/spinlock.c:170 softirqs last enabled at (5196): [] softirq_handle_end kernel/softirq.c:414 [inline] softirqs last enabled at (5196): [] handle_softirqs+0xb84/0xd58 kernel/softirq.c:599 softirqs last disabled at (7209): [] __do_softirq+0x14/0x20 kernel/softirq.c:605 ---[ end trace 0000000000000000 ]--- sched: RT throttling activated