------------[ cut here ]------------
workqueue: cannot queue hci_cmd_timeout on wq hci0
WARNING: CPU: 0 PID: 5969 at kernel/workqueue.c:2256 __queue_work+0xd38/0xfb0 kernel/workqueue.c:2254
Modules linked in:
CPU: 0 UID: 0 PID: 5969 Comm: kworker/0:6 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
Workqueue: events rfkill_op_handler
RIP: 0010:__queue_work+0xd38/0xfb0 kernel/workqueue.c:2254
Code: 42 80 3c 20 00 74 08 4c 89 ef e8 f3 10 99 00 49 8b 75 00 49 81 c7 78 01 00 00 48 c7 c7 20 e1 89 8b 4c 89 fa e8 99 39 f9 ff 90 <0f> 0b 90 90 e9 1a f5 ff ff e8 2a 9e 35 00 90 0f 0b 90 e9 dd fc ff
RSP: 0018:ffffc90000007b10 EFLAGS: 00010046
RAX: b5e5ebcde9690f00 RBX: 0000000000000100 RCX: ffff8880338d9e00
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000002
RBP: 1ffff1100f8ccc38 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffffbfff1bfa22c R12: dffffc0000000000
R13: ffff8880240c0988 R14: 0000000000000008 R15: ffff88807c666178
FS:  0000000000000000(0000) GS:ffff888125c15000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f033f9c26d8 CR3: 0000000055f12000 CR4: 0000000000350ef0
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:1050 [inline]
 sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1050
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:lock_acquire+0x175/0x360 kernel/locking/lockdep.c:5872
Code: 00 00 00 00 9c 8f 44 24 30 f7 44 24 30 00 02 00 00 0f 85 cd 00 00 00 f7 44 24 08 00 02 00 00 74 01 fb 65 48 8b 05 7b 41 03 11 <48> 3b 44 24 58 0f 85 f2 00 00 00 48 83 c4 60 5b 41 5c 41 5d 41 5e
RSP: 0018:ffffc9000b3075a8 EFLAGS: 00000206
RAX: b5e5ebcde9690f00 RBX: 0000000000000000 RCX: b5e5ebcde9690f00
RDX: ffffffff9357afc8 RSI: ffffffff8dba91be RDI: ffffffff8be33c00
RBP: ffffffff818a6135 R08: 0000000000000008 R09: ffffffff960181e8
R10: 00000000700eddae R11: 00000000ceb5790c R12: 0000000000000000
R13: ffff88807c666148 R14: 0000000000000001 R15: 0000000000000246
 touch_wq_lockdep_map+0xcb/0x180 kernel/workqueue.c:3907
 __flush_workqueue+0x121/0x14b0 kernel/workqueue.c:3949
 drain_workqueue+0xd3/0x390 kernel/workqueue.c:4113
 hci_dev_close_sync+0x659/0x1330 net/bluetooth/hci_sync.c:5280
 hci_dev_do_close+0x2f/0x90 net/bluetooth/hci_core.c:501
 hci_rfkill_set_block+0x21d/0x2e0 net/bluetooth/hci_core.c:929
 rfkill_set_block+0x1d2/0x440 net/rfkill/core.c:346
 rfkill_epo+0x7e/0x180 net/rfkill/core.c:466
 __rfkill_handle_global_op net/rfkill/input.c:60 [inline]
 rfkill_op_handler+0x84/0x240 net/rfkill/input.c:108
 process_one_work kernel/workqueue.c:3236 [inline]
 process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3319
 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3400
 kthread+0x711/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x439/0x7d0 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
----------------
Code disassembly (best guess):
   0:	00 00                	add    %al,(%rax)
   2:	00 00                	add    %al,(%rax)
   4:	9c                   	pushf
   5:	8f 44 24 30          	pop    0x30(%rsp)
   9:	f7 44 24 30 00 02 00 	testl  $0x200,0x30(%rsp)
  10:	00
  11:	0f 85 cd 00 00 00    	jne    0xe4
  17:	f7 44 24 08 00 02 00 	testl  $0x200,0x8(%rsp)
  1e:	00
  1f:	74 01                	je     0x22
  21:	fb                   	sti
  22:	65 48 8b 05 7b 41 03 	mov    %gs:0x1103417b(%rip),%rax        # 0x110341a5
  29:	11
* 2a:	48 3b 44 24 58       	cmp    0x58(%rsp),%rax <-- trapping instruction
  2f:	0f 85 f2 00 00 00    	jne    0x127
  35:	48 83 c4 60          	add    $0x60,%rsp
  39:	5b                   	pop    %rbx
  3a:	41 5c                	pop    %r12
  3c:	41 5d                	pop    %r13
  3e:	41 5e                	pop    %r14