------------[ cut here ]------------
workqueue: cannot queue hci_cmd_timeout on wq hci0
WARNING: CPU: 0 PID: 3 at kernel/workqueue.c:2258 __queue_work+0xd62/0xfe0 kernel/workqueue.c:2256
Modules linked in:
CPU: 0 UID: 0 PID: 3 Comm: pool_workqueue_ Not tainted 6.15.0-rc4-syzkaller-g079e5c56a5c4 #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:__queue_work+0xd62/0xfe0 kernel/workqueue.c:2256
Code: 42 80 3c 20 00 74 08 4c 89 ef e8 49 0d 97 00 49 8b 75 00 49 81 c7 78 01 00 00 48 c7 c7 e0 c7 69 8b 4c 89 fa e8 9f 40 f9 ff 90 <0f> 0b 90 90 e9 f1 f4 ff ff e8 c0 e2 34 00 90 0f 0b 90 e9 dd fc ff
RSP: 0018:ffffc90000007b08 EFLAGS: 00010046
RAX: 1f522549332e4f00 RBX: 0000000000000100 RCX: ffff8881412bbc00
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000002
RBP: 1ffff110022dec38 R08: ffff8880b8823e93 R09: 1ffff110171047d2
R10: dffffc0000000000 R11: ffffed10171047d3 R12: dffffc0000000000
R13: ffff8880477f0948 R14: 0000000000000008 R15: ffff8880116f6178
FS:  0000000000000000(0000) GS:ffff8881260c9000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb0c31b7bac CR3: 0000000079146000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 call_timer_fn+0x17b/0x5f0 kernel/time/timer.c:1789
 expire_timers kernel/time/timer.c:1835 [inline]
 __run_timers kernel/time/timer.c:2414 [inline]
 __run_timer_base+0x646/0x860 kernel/time/timer.c:2426
 run_timer_base kernel/time/timer.c:2435 [inline]
 run_timer_softirq+0xb7/0x180 kernel/time/timer.c:2445
 handle_softirqs+0x283/0x870 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:1049 [inline]
 sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1049
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:lockdep_unregister_key+0x2ba/0x310 kernel/locking/lockdep.c:6613
Code: 00 65 48 8b 05 c7 3e d7 10 48 3b 44 24 10 0f 84 30 fe ff ff e8 f7 e4 b7 09 e8 22 e6 b7 09 41 f7 c7 00 02 00 00 74 be fb 84 db <75> bd eb ce 90 0f 0b 90 31 db eb 89 90 0f 0b 90 e9 36 ff ff ff 48
RSP: 0018:ffffc90000087ca0 EFLAGS: 00000246
RAX: 1f522549332e4f00 RBX: 0000000000000000 RCX: 1f522549332e4f00
RDX: ffffffff93390708 RSI: ffffffff8d75e270 RDI: ffffffff8bc1d460
RBP: ffff888027753139 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: ffffffff81aaf8a8 R12: 0000000000000000
R13: 0000000000001000 R14: 0000000000000001 R15: 0000000000000206
 wq_unregister_lockdep kernel/workqueue.c:4816 [inline]
 pwq_release_workfn+0x6d5/0x870 kernel/workqueue.c:5112
 kthread_worker_fn+0x504/0xb60 kernel/kthread.c:1010
 kthread+0x70e/0x8a0 kernel/kthread.c:464
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:153
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
----------------
Code disassembly (best guess):
   0:	00 65 48             	add    %ah,0x48(%rbp)
   3:	8b 05 c7 3e d7 10    	mov    0x10d73ec7(%rip),%eax        # 0x10d73ed0
   9:	48 3b 44 24 10       	cmp    0x10(%rsp),%rax
   e:	0f 84 30 fe ff ff    	je     0xfffffe44
  14:	e8 f7 e4 b7 09       	call   0x9b7e510
  19:	e8 22 e6 b7 09       	call   0x9b7e640
  1e:	41 f7 c7 00 02 00 00 	test   $0x200,%r15d
  25:	74 be                	je     0xffffffe5
  27:	fb                   	sti
  28:	84 db                	test   %bl,%bl
* 2a:	75 bd                	jne    0xffffffe9 <-- trapping instruction
  2c:	eb ce                	jmp    0xfffffffc
  2e:	90                   	nop
  2f:	0f 0b                	ud2
  31:	90                   	nop
  32:	31 db                	xor    %ebx,%ebx
  34:	eb 89                	jmp    0xffffffbf
  36:	90                   	nop
  37:	0f 0b                	ud2
  39:	90                   	nop
  3a:	e9 36 ff ff ff       	jmp    0xffffff75
  3f:	48                   	rex.W