------------[ cut here ]------------
workqueue: cannot queue hci_cmd_timeout on wq hci0
WARNING: kernel/workqueue.c:2258 at __queue_work+0xd38/0xfb0 kernel/workqueue.c:2256, CPU#1: kworker/1:3/13260
Modules linked in:
CPU: 1 UID: 0 PID: 13260 Comm: kworker/1:3 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
Workqueue: events blkg_free_workfn
RIP: 0010:__queue_work+0xd38/0xfb0 kernel/workqueue.c:2256
Code: 42 80 3c 20 00 74 08 4c 89 ef e8 83 27 9a 00 49 8b 75 00 49 81 c7 78 01 00 00 48 c7 c7 80 dc a9 8b 4c 89 fa e8 a9 34 f9 ff 90 <0f> 0b 90 90 e9 1a f5 ff ff e8 4a a5 35 00 90 0f 0b 90 e9 dd fc ff
RSP: 0018:ffffc90000a08b10 EFLAGS: 00010046
RAX: c155f6702f67cd00 RBX: 0000000000000100 RCX: ffff8880341d8000
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000002
RBP: 1ffff11004f97538 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffffbfff1c3a6c8 R12: dffffc0000000000
R13: ffff8880525e0990 R14: 0000000000000008 R15: ffff888027cba978
FS:  0000000000000000(0000) GS:ffff888125ae8000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055557f906808 CR3: 000000007faa6000 CR4: 00000000003526f0
Call Trace:
 <IRQ>
 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+0x646/0x860 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+0x286/0x870 kernel/softirq.c:579
 __do_softirq kernel/softirq.c:613 [inline]
 invoke_softirq kernel/softirq.c:453 [inline]
 __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:696
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1052 [inline]
 sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1052
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:preempt_schedule_irq+0xb0/0x150 kernel/sched/core.c:7291
Code: 24 20 f6 44 24 21 02 74 0c 90 0f 0b 48 f7 03 08 00 00 00 74 64 bf 01 00 00 00 e8 db cd 0b f6 e8 f6 34 43 f6 fb bf 01 00 00 00 <e8> 5b ab ff ff 48 c7 44 24 40 00 00 00 00 9c 8f 44 24 40 8b 44 24
RSP: 0018:ffffc90003027820 EFLAGS: 00000282
RAX: c155f6702f67cd00 RBX: 0000000000000000 RCX: c155f6702f67cd00
RDX: 0000000000000006 RSI: ffffffff8dbbd648 RDI: 0000000000000001
RBP: ffffc900030278d0 R08: ffffffff8fc3f337 R09: 1ffffffff1f87e66
R10: dffffc0000000000 R11: fffffbfff1f87e67 R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff92000604f04
 irqentry_exit+0x6f/0x90 kernel/entry/common.c:211
 asm_sysvec_reschedule_ipi+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:lockdep_unregister_key+0x2c5/0x310 kernel/locking/lockdep.c:6616
Code: 65 48 8b 05 dd fe 25 11 48 3b 44 24 10 0f 84 26 fe ff ff e8 9d 7f e5 09 e8 c8 80 e5 09 41 f7 c7 00 02 00 00 74 bd fb 40 84 ed <75> bc eb cd 90 0f 0b 90 e9 19 ff ff ff 90 0f 0b 90 e9 2a ff ff ff
RSP: 0018:ffffc90003027998 EFLAGS: 00000246
RAX: c155f6702f67cd00 RBX: ffff888142b51e40 RCX: c155f6702f67cd00
RDX: ffffffff93c74378 RSI: ffffffff8dbd2232 RDI: ffffffff8c036f00
RBP: ffff888142b51e00 R08: 0000000000000000 R09: ffffffff81aa7b98
R10: dffffc0000000000 R11: fffff52000604ee9 R12: 0000000000000000
R13: 0000000000001000 R14: 0000000000000000 R15: 0000000000000a06
 blk_free_queue block/blk-core.c:265 [inline]
 blk_put_queue+0x104/0x150 block/blk-core.c:279
 blkg_free_workfn+0x3ef/0x440 block/blk-cgroup.c:138
 process_one_work kernel/workqueue.c:3263 [inline]
 process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3346
 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3427
 kthread+0x711/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x4bc/0x870 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
----------------
Code disassembly (best guess):
   0:	24 20                	and    $0x20,%al
   2:	f6 44 24 21 02       	testb  $0x2,0x21(%rsp)
   7:	74 0c                	je     0x15
   9:	90                   	nop
   a:	0f 0b                	ud2
   c:	48 f7 03 08 00 00 00 	testq  $0x8,(%rbx)
  13:	74 64                	je     0x79
  15:	bf 01 00 00 00       	mov    $0x1,%edi
  1a:	e8 db cd 0b f6       	call   0xf60bcdfa
  1f:	e8 f6 34 43 f6       	call   0xf643351a
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
* 2a:	e8 5b ab ff ff       	call   0xffffab8a <-- trapping instruction
  2f:	48 c7 44 24 40 00 00 	movq   $0x0,0x40(%rsp)
  36:	00 00
  38:	9c                   	pushf
  39:	8f 44 24 40          	pop    0x40(%rsp)
  3d:	8b                   	.byte 0x8b
  3e:	44                   	rex.R
  3f:	24                   	.byte 0x24