syzbot

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workqueue: cannot queue hci_cmd_timeout on wq hci0
WARNING: kernel/workqueue.c:2298 at __queue_work+0xf6c/0x12f8 kernel/workqueue.c:2296, CPU#0: pr/ttyAMA-1/41
Modules linked in:
CPU: 0 UID: 0 PID: 41 Comm: pr/ttyAMA-1 Tainted: G             L      syzkaller #0 PREEMPT 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
pstate: 634000c5 (nZCv daIF +PAN -UAO +TCO +DIT -SSBS BTYPE=--)
pc : __queue_work+0xf6c/0x12f8 kernel/workqueue.c:2296
lr : __queue_work+0xf6c/0x12f8 kernel/workqueue.c:2296
sp : ffff80008e8d7b10
x29: ffff80008e8d7b50 x28: dfff800000000000 x27: ffff700011d1af84
x26: ffff0000d281f800 x25: 0000000000000008 x24: ffff0000d281f9c0
x23: dfff800000000000 x22: ffff0000c24d0008 x21: 0000000000000100
x20: ffff800089f06000 x19: ffff0000cda34a70 x18: 1fffe00035c20e20
x17: ffff800125887000 x16: ffff80008e8d0000 x15: 0000000000000000
x14: 0000000000000000 x13: 0000000000000001 x12: 0000000000000000
x11: 0000000000000000 x10: 0000000000ff0100 x9 : ee6e915eeea4d800
x8 : ee6e915eeea4d800 x7 : ffff8000804886d0 x6 : 0000000000000000
x5 : 0000000000000001 x4 : 0000000000000000 x3 : ffff8000802f13b0
x2 : 0000000000000101 x1 : ffff0000c24d0000 x0 : 0000000000000000
Call trace:
 __queue_work+0xf6c/0x12f8 kernel/workqueue.c:2296 (P)
 delayed_work_timer_fn+0x74/0x90 kernel/workqueue.c:2527
 call_timer_fn+0x19c/0xa4c kernel/time/timer.c:1748
 expire_timers kernel/time/timer.c:1794 [inline]
 __run_timers kernel/time/timer.c:2374 [inline]
 __run_timer_base+0x554/0x74c kernel/time/timer.c:2386
 run_timer_base+0x84/0x1b8 kernel/time/timer.c:2395
 run_timer_softirq+0x20/0x48 kernel/time/timer.c:2405
 handle_softirqs+0x2e4/0xd34 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:889
 do_softirq_own_stack+0x20/0x2c arch/arm64/kernel/irq.c:73
 invoke_softirq kernel/softirq.c:503 [inline]
 __irq_exit_rcu+0x1ac/0x428 kernel/softirq.c:735
 irq_exit_rcu+0x14/0x84 kernel/softirq.c:752
 __el1_irq arch/arm64/kernel/entry-common.c:497 [inline]
 el1_interrupt+0x40/0x60 arch/arm64/kernel/entry-common.c:509
 el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:514
 el1h_64_irq+0x6c/0x70 arch/arm64/kernel/entry.S:590
 __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)
 __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:178 [inline] (P)
 _raw_spin_unlock_irqrestore+0x44/0x98 kernel/locking/spinlock.c:198 (P)
 spin_unlock_irqrestore include/linux/spinlock.h:408 [inline]
 __uart_port_unlock_irqrestore include/linux/serial_core.h:616 [inline]
 pl011_console_device_unlock+0x90/0xc8 drivers/tty/serial/amba-pl011.c:2668
 nbcon_emit_one+0x158/0x1dc kernel/printk/nbcon.c:1165
 nbcon_kthread_func+0x55c/0x6bc kernel/printk/nbcon.c:1271
 kthread+0x2f0/0x3c0 kernel/kthread.c:436
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:842
irq event stamp: 159271
hardirqs last  enabled at (159270): [<ffff80008030866c>] handle_softirqs+0x1cc/0xd34 kernel/softirq.c:606
hardirqs last disabled at (159271): [<ffff800086743ef0>] __raw_spin_lock_irq include/linux/spinlock_api_smp.h:140 [inline]
hardirqs last disabled at (159271): [<ffff800086743ef0>] _raw_spin_lock_irq+0x28/0x70 kernel/locking/spinlock.c:174
softirqs last  enabled at (159248): [<ffff800080309064>] softirq_handle_end kernel/softirq.c:468 [inline]
softirqs last  enabled at (159248): [<ffff800080309064>] handle_softirqs+0xbc4/0xd34 kernel/softirq.c:650
softirqs last disabled at (159269): [<ffff8000800204b0>] __do_softirq+0x14/0x20 kernel/softirq.c:656
---[ end trace 0000000000000000 ]---