------------[ cut here ]------------ WARNING: CPU: 1 PID: 6730 at kernel/workqueue.c:1441 __queue_work+0x10c8/0x136c kernel/workqueue.c:1441 Modules linked in: CPU: 1 PID: 6730 Comm: syz-executor.4 Not tainted 6.1.92-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 pstate: 004000c5 (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 : ffff800008017b70 x29: ffff800008017bb0 x28: 0000000000000008 x27: dfff800000000000 x26: ffff0000dd606000 x25: dfff800000000000 x24: 0000000000000100 x23: ffff0000dd6061c0 x22: ffff0000d022b788 x21: 1fffe0001a0456f1 x20: 00000000000b0012 x19: ffff0000f30d4bc0 x18: ffff80001bf67420 x17: ffff80019ebd6000 x16: ffff80001215fb9c x15: 0000000000010000 x14: 1ffff00002b0a0b0 x13: dfff800000000000 x12: 0000000055545a73 x11: 0000000000ff0100 x10: 0000000000000000 x9 : ffff80000821631c x8 : ffff0000d022b780 x7 : ffff8000083fb8a0 x6 : 0000000000000000 x5 : 0000000000000080 x4 : 0000000000000001 x3 : ffff800014299240 x2 : ffff0000f30d4bc0 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 __do_softirq+0x314/0xe38 kernel/softirq.c:571 ____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:650 irq_exit_rcu+0x14/0x84 kernel/softirq.c:662 __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:5003 hci_dev_do_close net/bluetooth/hci_core.c:554 [inline] hci_unregister_dev+0x1e0/0x4a4 net/bluetooth/hci_core.c:2736 vhci_release+0x7c/0xcc drivers/bluetooth/hci_vhci.c:573 __fput+0x30c/0x7bc fs/file_table.c:320 ____fput+0x20/0x30 fs/file_table.c:348 task_work_run+0x240/0x2f0 kernel/task_work.c:179 exit_task_work include/linux/task_work.h:38 [inline] do_exit+0x554/0x1a88 kernel/exit.c:869 do_group_exit+0x194/0x22c kernel/exit.c:1019 __do_sys_exit_group kernel/exit.c:1030 [inline] __se_sys_exit_group kernel/exit.c:1028 [inline] __wake_up_parent+0x0/0x60 kernel/exit.c:1028 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:206 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637 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: 191205 hardirqs last enabled at (191204): [] __do_softirq+0x1d8/0xe38 kernel/softirq.c:555 hardirqs last disabled at (191205): [] __raw_spin_lock_irq include/linux/spinlock_api_smp.h:117 [inline] hardirqs last disabled at (191205): [] _raw_spin_lock_irq+0x34/0x9c kernel/locking/spinlock.c:170 softirqs last enabled at (189680): [] sock_orphan include/net/sock.h:2147 [inline] softirqs last enabled at (189680): [] sk_common_release+0x10c/0x2ec net/core/sock.c:3710 softirqs last disabled at (191203): [] ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:80 ---[ end trace 0000000000000000 ]--- vkms_vblank_simulate: vblank timer overrun