------------[ cut here ]------------
workqueue: cannot queue hci_cmd_timeout on wq hci2
WARNING: CPU: 2 PID: 6183 at kernel/workqueue.c:2257 __queue_work+0xc9c/0x10f0 kernel/workqueue.c:2256
Modules linked in:
CPU: 2 UID: 0 PID: 6183 Comm: syz-executor Not tainted 6.14.0-rc4-syzkaller-00090-gdd83757f6e68 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:__queue_work+0xc9c/0x10f0 kernel/workqueue.c:2256
Code: 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 28 04 00 00 48 8b 75 18 4c 89 fa 48 c7 c7 e0 e3 6b 8b e8 a5 33 f7 ff 90 <0f> 0b 90 90 e9 96 f7 ff ff e8 66 03 37 00 90 0f 0b 90 e9 1b f6 ff
RSP: 0018:ffffc90000658be8 EFLAGS: 00010082
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff817a1229
RDX: ffff888028284880 RSI: ffffffff817a1236 RDI: 0000000000000001
RBP: ffff888030ba4930 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000002 R12: 1ffff920000cb18f
R13: 0000000000000001 R14: 0000000000000100 R15: ffff888027e65978
FS:  0000000000000000(0000) GS:ffff88806a800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb6029a6078 CR3: 00000000205d2000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 call_timer_fn+0x1a0/0x610 kernel/time/timer.c:1789
 expire_timers kernel/time/timer.c:1835 [inline]
 __run_timers+0x56a/0x930 kernel/time/timer.c:2414
 __run_timer_base kernel/time/timer.c:2426 [inline]
 __run_timer_base kernel/time/timer.c:2418 [inline]
 run_timer_base+0x114/0x190 kernel/time/timer.c:2435
 run_timer_softirq+0x1a/0x40 kernel/time/timer.c:2445
 handle_softirqs+0x213/0x8f0 kernel/softirq.c:561
 __do_softirq kernel/softirq.c:595 [inline]
 invoke_softirq kernel/softirq.c:435 [inline]
 __irq_exit_rcu+0x109/0x170 kernel/softirq.c:662
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:678
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
 sysvec_apic_timer_interrupt+0xa4/0xc0 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+0x1b2/0x2b0 kernel/locking/lockdep.c:6595
Code: 54 fd ff ff 48 89 df e8 9c c3 ff ff 89 c3 e8 05 d9 ff ff 9c 58 f6 c4 02 0f 85 92 00 00 00 41 f7 c5 00 02 00 00 74 01 fb 84 db <75> 4f 5b 5d 41 5c 41 5d 41 5e 41 5f e9 cd 99 0a 00 48 c7 c0 34 88
RSP: 0018:ffffc90003f37948 EFLAGS: 00000246
RAX: 0000000000000046 RBX: 0000000000000000 RCX: 0000000000000001
RDX: dffffc0000000000 RSI: ffffffff8b6cf040 RDI: ffffffff8bd35740
RBP: ffff888035f40298 R08: ffffffff9387faa4 R09: 0000000000026892
R10: ffffffff96e83b4f R11: 0000000000000001 R12: 0000000000000000
R13: 0000000000000246 R14: ffffffff97056e30 R15: ffff888035f402a0
 __qdisc_destroy+0x11a/0x4b0 net/sched/sch_generic.c:1080
 qdisc_put+0xab/0xe0 net/sched/sch_generic.c:1106
 dev_shutdown+0x1c5/0x430 net/sched/sch_generic.c:1494
 unregister_netdevice_many_notify+0x9fb/0x1f30 net/core/dev.c:11879
 unregister_netdevice_many net/core/dev.c:11954 [inline]
 unregister_netdevice_queue+0x307/0x3f0 net/core/dev.c:11824
 unregister_netdevice include/linux/netdevice.h:3337 [inline]
 __tun_detach+0x1241/0x1530 drivers/net/tun.c:685
 tun_detach drivers/net/tun.c:701 [inline]
 tun_chr_close+0xc2/0x230 drivers/net/tun.c:3517
 __fput+0x3ff/0xb70 fs/file_table.c:464
 task_work_run+0x14e/0x250 kernel/task_work.c:227
 exit_task_work include/linux/task_work.h:40 [inline]
 do_exit+0xad8/0x2d70 kernel/exit.c:938
 do_group_exit+0xd3/0x2a0 kernel/exit.c:1087
 __do_sys_exit_group kernel/exit.c:1098 [inline]
 __se_sys_exit_group kernel/exit.c:1096 [inline]
 __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1096
 x64_sys_call+0x151f/0x1720 arch/x86/include/generated/asm/syscalls_64.h:232
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb60278d169
Code: Unable to access opcode bytes at 0x7fb60278d13f.
RSP: 002b:00007ffe6383c668 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fb60278d169
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000043
RBP: 00007fb6027ed8d0 R08: 00007ffe6383a407 R09: 00007ffe6383c9f8
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffe6383c9f8 R14: 00000000ffffffff R15: 00007ffe6383c820
 </TASK>
----------------
Code disassembly (best guess), 4 bytes skipped:
   0:	48 89 df             	mov    %rbx,%rdi
   3:	e8 9c c3 ff ff       	call   0xffffc3a4
   8:	89 c3                	mov    %eax,%ebx
   a:	e8 05 d9 ff ff       	call   0xffffd914
   f:	9c                   	pushf
  10:	58                   	pop    %rax
  11:	f6 c4 02             	test   $0x2,%ah
  14:	0f 85 92 00 00 00    	jne    0xac
  1a:	41 f7 c5 00 02 00 00 	test   $0x200,%r13d
  21:	74 01                	je     0x24
  23:	fb                   	sti
  24:	84 db                	test   %bl,%bl
* 26:	75 4f                	jne    0x77 <-- trapping instruction
  28:	5b                   	pop    %rbx
  29:	5d                   	pop    %rbp
  2a:	41 5c                	pop    %r12
  2c:	41 5d                	pop    %r13
  2e:	41 5e                	pop    %r14
  30:	41 5f                	pop    %r15
  32:	e9 cd 99 0a 00       	jmp    0xa9a04
  37:	48                   	rex.W
  38:	c7                   	.byte 0xc7
  39:	c0                   	.byte 0xc0
  3a:	34 88                	xor    $0x88,%al