------------[ cut here ]------------
workqueue: cannot queue hci_cmd_timeout on wq hci4
WARNING: CPU: 1 PID: 29 at kernel/workqueue.c:2256 __queue_work+0x2e5/0x1010 kernel/workqueue.c:2254
Modules linked in:
CPU: 1 UID: 0 PID: 29 Comm: ktimers/1 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
RIP: 0010:__queue_work+0x2e5/0x1010 kernel/workqueue.c:2254
Code: 42 80 3c 28 00 74 08 48 89 ef e8 86 b2 93 00 48 8b 75 00 49 81 c6 68 01 00 00 48 c7 c7 20 f0 09 8b 4c 89 f2 e8 ac 3c f9 ff 90 <0f> 0b 90 90 e9 f2 fe ff ff e8 cd 6b 34 00 eb 2e e8 c6 6b 34 00 e9
RSP: 0018:ffffc90000a3f828 EFLAGS: 00010046
RAX: a5ad0ab144d17500 RBX: 0000000000000000 RCX: ffff88801c6b1dc0
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000100
RBP: ffff888032dcc998 R08: 0000000000000000 R09: 0000000000000100
R10: dffffc0000000000 R11: ffffed1017124863 R12: dffffc0000000000
R13: dffffc0000000000 R14: ffff88804cd4f168 R15: ffff88801c6b28cc
FS:  0000000000000000(0000) GS:ffff8881269bc000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fce06a3214b CR3: 000000002669e000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 call_timer_fn+0x17e/0x5f0 kernel/time/timer.c:1747
 expire_timers kernel/time/timer.c:1793 [inline]
 __run_timers kernel/time/timer.c:2372 [inline]
 __run_timer_base+0x709/0x970 kernel/time/timer.c:2384
 run_timer_base kernel/time/timer.c:2393 [inline]
 run_timer_softirq+0xb7/0x180 kernel/time/timer.c:2403
 handle_softirqs+0x22f/0x710 kernel/softirq.c:579
 __do_softirq kernel/softirq.c:613 [inline]
 run_ktimerd+0xcf/0x190 kernel/softirq.c:1043
 smpboot_thread_fn+0x53f/0xa60 kernel/smpboot.c:160
 kthread+0x70e/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x436/0x7d0 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>