syzbot

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workqueue: cannot queue hci_cmd_timeout on wq hci0
WARNING: kernel/workqueue.c:2306 at __queue_work+0x1050/0x1440 kernel/workqueue.c:2305, CPU#0: syz.4.235/5797
Modules linked in:
CPU: 0 UID: 0 PID: 5797 Comm: syz.4.235 Tainted: G             L      syzkaller #0 PREEMPT 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026
pstate: 634000c5 (nZCv daIF +PAN -UAO +TCO +DIT -SSBS BTYPE=--)
pc : __queue_work+0x1050/0x1440 kernel/workqueue.c:2305
lr : __queue_work+0x1050/0x1440 kernel/workqueue.c:2305
sp : ffff80008eae7b40
x29: ffff80008eae7b70 x28: 0000000000000008 x27: dfff800000000000
x26: ffff0000d3e5e9c0 x25: 1fffe00018a40001 x24: 0000000100000100
x23: 0000000000000100 x22: ffff0000d5ca4a70 x21: ffff0000d3e5e800
x20: ffff80008a116000 x19: ffff0000d5ca4a58 x18: 1fffe00035bce428
x17: ffff800125401000 x16: ffff80008eae0000 x15: 0000000000000000
x14: 0000000000000000 x13: 0000000000000001 x12: 0000000000000000
x11: 0000000000000000 x10: 0000000000000102 x9 : 718eb1c5a3397b00
x8 : 718eb1c5a3397b00 x7 : ffff80008048ce60 x6 : 0000000000000000
x5 : 0000000000000001 x4 : 0000000000000000 x3 : ffff8000802f7010
x2 : 0000000100000100 x1 : ffff0000c5200000 x0 : 0000000000000000
Call trace:
 __queue_work+0x1050/0x1440 kernel/workqueue.c:2305 (P)
 delayed_work_timer_fn+0x74/0x94 kernel/workqueue.c:2547
 call_timer_fn+0x194/0xa4c kernel/time/timer.c:1748
 expire_timers kernel/time/timer.c:1794 [inline]
 __run_timers kernel/time/timer.c:2374 [inline]
 __run_timer_base+0x558/0x744 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+0x2ec/0xd98 kernel/softirq.c:622
 __do_softirq+0x14/0x20 kernel/softirq.c:656
 ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:78
 call_on_irq_stack+0x30/0x48 arch/arm64/kernel/entry.S:889
 do_softirq_own_stack+0x20/0x2c arch/arm64/kernel/irq.c:83
 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:510 [inline]
 el1_interrupt+0x40/0x60 arch/arm64/kernel/entry-common.c:522
 el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:527
 el1h_64_irq+0x6c/0x70 arch/arm64/kernel/entry.S:590
 unix_skb_to_scm+0x6c/0x26c net/unix/af_unix.c:2000 (P)
 __unix_dgram_recvmsg+0x4c4/0x85c net/unix/af_unix.c:2633
 unix_dgram_recvmsg+0xcc/0xe4 net/unix/af_unix.c:2681
 sock_recvmsg_nosec+0x94/0x130 net/socket.c:1126
 ____sys_recvmsg+0x4fc/0x608 net/socket.c:2902
 ___sys_recvmsg+0x16c/0x1f4 net/socket.c:2946
 do_recvmmsg+0x288/0x7d4 net/socket.c:3041
 __sys_recvmmsg+0x1e0/0x270 net/socket.c:3115
 __do_sys_recvmmsg net/socket.c:3138 [inline]
 __se_sys_recvmmsg net/socket.c:3131 [inline]
 __arm64_sys_recvmmsg+0xdc/0x104 net/socket.c:3131
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x244 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0xec/0x23c arch/arm64/kernel/syscall.c:121
 do_el0_svc+0x4c/0x5c arch/arm64/kernel/syscall.c:140
 el0_svc+0x64/0x260 arch/arm64/kernel/entry-common.c:736
 el0t_64_sync_handler+0x48/0x148 arch/arm64/kernel/entry-common.c:755
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:594
irq event stamp: 494823
hardirqs last  enabled at (494822): [<ffff8000868e47ec>] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:178 [inline]
hardirqs last  enabled at (494822): [<ffff8000868e47ec>] _raw_spin_unlock_irqrestore+0x38/0x98 kernel/locking/spinlock.c:198
hardirqs last disabled at (494823): [<ffff8000868e4694>] __raw_spin_lock_irq include/linux/spinlock_api_smp.h:140 [inline]
hardirqs last disabled at (494823): [<ffff8000868e4694>] _raw_spin_lock_irq+0x28/0x70 kernel/locking/spinlock.c:174
softirqs last  enabled at (481002): [<ffff80008030eee8>] softirq_handle_end kernel/softirq.c:468 [inline]
softirqs last  enabled at (481002): [<ffff80008030eee8>] handle_softirqs+0xc28/0xd98 kernel/softirq.c:650
softirqs last disabled at (494809): [<ffff8000800204b0>] __do_softirq+0x14/0x20 kernel/softirq.c:656
---[ end trace 0000000000000000 ]---