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workqueue: cannot queue hci_cmd_timeout on wq hci2
WARNING: CPU: 0 PID: 26644 at kernel/workqueue.c:2257 __queue_work+0xd03/0x1160 kernel/workqueue.c:2256
Modules linked in:
CPU: 0 UID: 0 PID: 26644 Comm: syz.6.6753 Not tainted syzkaller #0 PREEMPT(full) 
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+0xd03/0x1160 kernel/workqueue.c:2256
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 20 27 8c 8b e8 1e 15 f7 ff 90 <0f> 0b 90 90 e9 2f f7 ff ff e8 5f e5 38 00 90 0f 0b 90 e9 b4 f5 ff
RSP: 0018:ffffc90000007be8 EFLAGS: 00010082
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff817b3ee8
RDX: ffff88802c152480 RSI: ffffffff817b3ef5 RDI: 0000000000000001
RBP: ffff888062a58978 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: 1ffff92000000f8f
R13: 0000000000000100 R14: ffffffff81843990 R15: ffff888065049978
FS:  00007f501b9766c0(0000) GS:ffff8880d6a08000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f501ade7dac CR3: 00000000654fa000 CR4: 0000000000352ef0
DR0: ffffffffffffffff DR1: 00000000000001f8 DR2: 0000000000000083
DR3: ffffffffefffff15 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 call_timer_fn+0x19a/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+0x219/0x8e0 kernel/softirq.c:622
 __do_softirq kernel/softirq.c:656 [inline]
 invoke_softirq kernel/softirq.c:496 [inline]
 __irq_exit_rcu+0x109/0x170 kernel/softirq.c:723
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:739
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1052 [inline]
 sysvec_apic_timer_interrupt+0xa4/0xc0 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:lockdep_unregister_key+0xe9/0x140 kernel/locking/lockdep.c:6616
Code: 48 89 ef e8 b9 e5 ff ff 48 83 2d 29 bf 28 14 01 89 c3 e8 da ee ff ff 9c 58 f6 c4 02 75 52 41 f7 c4 00 02 00 00 74 01 fb 84 db <75> 1b 5b 5d 41 5c e9 bc 79 0a 00 8b 05 aa a9 e9 0e 31 db 85 c0 74
RSP: 0018:ffffc900066b7378 EFLAGS: 00000246
RAX: 0000000000000046 RBX: 0000000000000000 RCX: 0000000000000001
RDX: 0000000000000000 RSI: ffffffff8db1a930 RDI: ffffffff8bf07040
RBP: ffffffff97284a88 R08: 000000000003a7e9 R09: ffffffff95c899f2
R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000246
R13: ffff88812010c000 R14: ffff8880470af800 R15: 0000000000000700
 __qdisc_destroy+0x11a/0x4d0 net/sched/sch_generic.c:1083
 qdisc_put+0xab/0xe0 net/sched/sch_generic.c:1109
 qdisc_graft+0xa2b/0x17c0 net/sched/sch_api.c:1137
 __tc_modify_qdisc net/sched/sch_api.c:1756 [inline]
 tc_modify_qdisc+0xf5c/0x2170 net/sched/sch_api.c:1812
 rtnetlink_rcv_msg+0x3c9/0xe90 net/core/rtnetlink.c:6960
 netlink_rcv_skb+0x158/0x420 net/netlink/af_netlink.c:2552
 netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline]
 netlink_unicast+0x5aa/0x870 net/netlink/af_netlink.c:1346
 netlink_sendmsg+0x8c8/0xdd0 net/netlink/af_netlink.c:1896
 sock_sendmsg_nosec net/socket.c:727 [inline]
 __sock_sendmsg net/socket.c:742 [inline]
 ____sys_sendmsg+0xa98/0xc70 net/socket.c:2630
 ___sys_sendmsg+0x134/0x1d0 net/socket.c:2684
 __sys_sendmsg+0x16d/0x220 net/socket.c:2716
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xcd/0xfa0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f501ab8f6c9
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:00007f501b976038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f501ade6090 RCX: 00007f501ab8f6c9
RDX: 0000000000000000 RSI: 00002000000007c0 RDI: 0000000000000006
RBP: 00007f501ac11f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f501ade6128 R14: 00007f501ade6090 R15: 00007ffe817d9be8
 </TASK>
----------------
Code disassembly (best guess):
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	e8 b9 e5 ff ff       	call   0xffffe5c1
   8:	48 83 2d 29 bf 28 14 	subq   $0x1,0x1428bf29(%rip)        # 0x1428bf39
   f:	01
  10:	89 c3                	mov    %eax,%ebx
  12:	e8 da ee ff ff       	call   0xffffeef1
  17:	9c                   	pushf
  18:	58                   	pop    %rax
  19:	f6 c4 02             	test   $0x2,%ah
  1c:	75 52                	jne    0x70
  1e:	41 f7 c4 00 02 00 00 	test   $0x200,%r12d
  25:	74 01                	je     0x28
  27:	fb                   	sti
  28:	84 db                	test   %bl,%bl
* 2a:	75 1b                	jne    0x47 <-- trapping instruction
  2c:	5b                   	pop    %rbx
  2d:	5d                   	pop    %rbp
  2e:	41 5c                	pop    %r12
  30:	e9 bc 79 0a 00       	jmp    0xa79f1
  35:	8b 05 aa a9 e9 0e    	mov    0xee9a9aa(%rip),%eax        # 0xee9a9e5
  3b:	31 db                	xor    %ebx,%ebx
  3d:	85 c0                	test   %eax,%eax
  3f:	74                   	.byte 0x74