------------[ cut here ]------------
workqueue: cannot queue hci_cmd_timeout on wq hci6
WARNING: CPU: 1 PID: 18112 at kernel/workqueue.c:2255 __queue_work+0xd03/0x1160 kernel/workqueue.c:2254
Modules linked in:
CPU: 1 UID: 0 PID: 18112 Comm: syz.1.3049 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:__queue_work+0xd03/0x1160 kernel/workqueue.c:2254
Code: 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 4b 04 00 00 48 8b 75 18 4c 89 fa 48 c7 c7 a0 00 ac 8b e8 be 1e f7 ff 90 <0f> 0b 90 90 e9 2f f7 ff ff e8 ef 78 38 00 90 0f 0b 90 e9 b4 f5 ff
RSP: 0018:ffffc90000a08be8 EFLAGS: 00010082
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff817a3358
RDX: ffff88807afac880 RSI: ffffffff817a3365 RDI: 0000000000000001
RBP: ffff88806c7a8970 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 000000000000f1f0 R12: 1ffff9200014118f
R13: 0000000080000100 R14: ffffffff81832460 R15: ffff888032816978
FS:  00007f31bde706c0(0000) GS:ffff8881247b9000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000000a40 CR3: 0000000022719000 CR4: 00000000003526f0
Call Trace:
 <IRQ>
 call_timer_fn+0x197/0x620 kernel/time/timer.c:1747
 expire_timers kernel/time/timer.c:1793 [inline]
 __run_timers+0x569/0x960 kernel/time/timer.c:2372
 __run_timer_base kernel/time/timer.c:2384 [inline]
 __run_timer_base kernel/time/timer.c:2376 [inline]
 run_timer_base+0x114/0x190 kernel/time/timer.c:2393
 run_timer_softirq+0x1a/0x40 kernel/time/timer.c:2403
 handle_softirqs+0x216/0x8e0 kernel/softirq.c:579
 __do_softirq kernel/softirq.c:613 [inline]
 invoke_softirq kernel/softirq.c:453 [inline]
 __irq_exit_rcu+0x109/0x170 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+0xa4/0xc0 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+0x62/0x350 kernel/locking/lockdep.c:5872
Code: a9 3e 12 83 f8 07 0f 87 bc 02 00 00 89 c0 48 0f a3 05 52 85 13 0f 0f 82 74 02 00 00 8b 35 0a b7 13 0f 85 f6 0f 85 8d 00 00 00 <48> 8b 44 24 30 65 48 2b 05 a9 a8 3e 12 0f 85 c7 02 00 00 48 83 c4
RSP: 0018:ffffc90003f4f878 EFLAGS: 00000206
RAX: 0000000000000046 RBX: ffff888032816948 RCX: 0000000000000001
RDX: 0000000000000000 RSI: ffffffff8de2acf0 RDI: ffffffff8c162900
RBP: 0000000000000000 R08: d04b942bc18e39f5 R09: ffffffff96d751b8
R10: 0000000000000008 R11: 0000000000000001 R12: 0000000000000001
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 touch_wq_lockdep_map+0xad/0x1c0 kernel/workqueue.c:3907
 __flush_workqueue+0x128/0x1230 kernel/workqueue.c:3949
 drain_workqueue+0x199/0x3d0 kernel/workqueue.c:4113
 hci_dev_close_sync+0x39b/0x11d0 net/bluetooth/hci_sync.c:5280
 hci_dev_do_close+0x2e/0x90 net/bluetooth/hci_core.c:501
 hci_rfkill_set_block+0x225/0x360 net/bluetooth/hci_core.c:929
 rfkill_set_block+0x1fe/0x550 net/rfkill/core.c:346
 rfkill_fop_write+0x2c0/0x580 net/rfkill/core.c:1301
 vfs_write+0x29d/0x11d0 fs/read_write.c:684
 ksys_write+0x1f8/0x250 fs/read_write.c:738
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xcd/0x4c0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f31bcf8ebe9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f31bde70038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f31bd1b6180 RCX: 00007f31bcf8ebe9
RDX: 0000000000000008 RSI: 0000200000000080 RDI: 000000000000000c
RBP: 00007f31bd011e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f31bd1b6218 R14: 00007f31bd1b6180 R15: 00007ffd225845a8
 </TASK>
----------------
Code disassembly (best guess), 1 bytes skipped:
   0:	3e 12 83 f8 07 0f 87 	ds adc -0x78f0f808(%rbx),%al
   7:	bc 02 00 00 89       	mov    $0x89000002,%esp
   c:	c0 48 0f a3          	rorb   $0xa3,0xf(%rax)
  10:	05 52 85 13 0f       	add    $0xf138552,%eax
  15:	0f 82 74 02 00 00    	jb     0x28f
  1b:	8b 35 0a b7 13 0f    	mov    0xf13b70a(%rip),%esi        # 0xf13b72b
  21:	85 f6                	test   %esi,%esi
  23:	0f 85 8d 00 00 00    	jne    0xb6
* 29:	48 8b 44 24 30       	mov    0x30(%rsp),%rax <-- trapping instruction
  2e:	65 48 2b 05 a9 a8 3e 	sub    %gs:0x123ea8a9(%rip),%rax        # 0x123ea8df
  35:	12
  36:	0f 85 c7 02 00 00    	jne    0x303
  3c:	48                   	rex.W
  3d:	83                   	.byte 0x83
  3e:	c4                   	.byte 0xc4