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workqueue: cannot queue hci_cmd_timeout on wq hci0
WARNING: kernel/workqueue.c:2306 at __queue_work+0xd4a/0x10a0 kernel/workqueue.c:2305, CPU#0: syz.0.0/5323
Modules linked in:
CPU: 0 UID: 0 PID: 5323 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
RIP: 0010:__queue_work+0xd66/0x10a0 kernel/workqueue.c:2305
Code: 49 81 c7 70 01 00 00 4c 8d 35 16 dc a8 0e 48 89 f8 48 c1 e8 03 80 3c 18 00 74 05 e8 64 56 a8 00 49 8b 75 18 4c 89 f7 4c 89 fa <67> 48 0f b9 3a 4c 89 e8 48 c1 e8 03 80 3c 18 00 74 08 4c 89 ef e8
RSP: 0018:ffffc90000007bc8 EFLAGS: 00010046
RAX: 1ffff11009c5d94e RBX: dffffc0000000000 RCX: ffff88803e1f2540
RDX: ffff88803f5b5970 RSI: ffffffff8aa83a10 RDI: ffffffff90362590
RBP: 0000000000000100 R08: ffffffff9032faf7 R09: 1ffffffff2065f5e
R10: dffffc0000000000 R11: ffffffff818d50a0 R12: 0000000000000008
R13: ffff88804e2eca58 R14: ffffffff90362590 R15: ffff88803f5b5970
FS:  00007f85a73d36c0(0000) GS:ffff88808c818000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555e09420a10 CR3: 000000003ebbf000 CR4: 0000000000352ef0
Call Trace:
 <IRQ>
 call_timer_fn+0x192/0x5e0 kernel/time/timer.c:1748
 expire_timers kernel/time/timer.c:1794 [inline]
 __run_timers kernel/time/timer.c:2374 [inline]
 __run_timer_base+0x67e/0x8b0 kernel/time/timer.c:2386
 run_timer_base kernel/time/timer.c:2395 [inline]
 run_timer_softirq+0xb7/0x170 kernel/time/timer.c:2405
 handle_softirqs+0x225/0x840 kernel/softirq.c:622
 __do_softirq kernel/softirq.c:656 [inline]
 invoke_softirq kernel/softirq.c:496 [inline]
 __irq_exit_rcu+0xca/0x220 kernel/softirq.c:735
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:752
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1062 [inline]
 sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1062
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:lock_acquire+0x221/0x350 kernel/locking/lockdep.c:5872
Code: ff ff ff e8 81 f0 13 0a f7 44 24 08 00 02 00 00 0f 84 3a ff ff ff 65 48 8b 05 6b 5b 9e 11 48 3b 44 24 58 75 33 fb 48 83 c4 60 <5b> 41 5c 41 5d 41 5e 41 5f 5d e9 90 f0 16 0a cc 48 8d 3d b8 63 94
RSP: 0018:ffffc90005c3f908 EFLAGS: 00000282
RAX: 9b3bca052ddbb700 RBX: 0000000000000000 RCX: 0000000000000046
RDX: ffffffff93ef3338 RSI: ffffffff8e260bc4 RDI: ffffffff8c2aaf80
RBP: ffffffff818d8a75 R08: 0000000000000008 R09: ffffffff9667afd8
R10: 00000000a663162c R11: 0000000009b9b76d R12: 0000000000000000
R13: ffff88803f5b5940 R14: 0000000000000001 R15: 0000000000000246
 touch_wq_lockdep_map+0xcb/0x180 kernel/workqueue.c:4037
 __flush_workqueue+0x148/0x1470 kernel/workqueue.c:4079
 drain_workqueue+0xce/0x380 kernel/workqueue.c:4243
 hci_dev_close_sync+0x60e/0x10a0 net/bluetooth/hci_sync.c:5391
 hci_dev_do_reset net/bluetooth/hci_core.c:539 [inline]
 hci_dev_reset+0x14d/0x350 net/bluetooth/hci_core.c:571
 sock_do_ioctl+0x101/0x320 net/socket.c:1300
 sock_ioctl+0x57a/0x7e0 net/socket.c:1421
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:597 [inline]
 __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:583
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f85a659ce59
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f85a73d2fe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f85a6815fa0 RCX: 00007f85a659ce59
RDX: 0000000000000000 RSI: 00000000400448cb RDI: 000000000000000b
RBP: 00007f85a6632e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f85a6816038 R14: 00007f85a6815fa0 R15: 00007fffbd0ffec8
 </TASK>
----------------
Code disassembly (best guess):
   0:	49 81 c7 70 01 00 00 	add    $0x170,%r15
   7:	4c 8d 35 16 dc a8 0e 	lea    0xea8dc16(%rip),%r14        # 0xea8dc24
   e:	48 89 f8             	mov    %rdi,%rax
  11:	48 c1 e8 03          	shr    $0x3,%rax
  15:	80 3c 18 00          	cmpb   $0x0,(%rax,%rbx,1)
  19:	74 05                	je     0x20
  1b:	e8 64 56 a8 00       	call   0xa85684
  20:	49 8b 75 18          	mov    0x18(%r13),%rsi
  24:	4c 89 f7             	mov    %r14,%rdi
  27:	4c 89 fa             	mov    %r15,%rdx
* 2a:	67 48 0f b9 3a       	ud1    (%edx),%rdi <-- trapping instruction
  2f:	4c 89 e8             	mov    %r13,%rax
  32:	48 c1 e8 03          	shr    $0x3,%rax
  36:	80 3c 18 00          	cmpb   $0x0,(%rax,%rbx,1)
  3a:	74 08                	je     0x44
  3c:	4c 89 ef             	mov    %r13,%rdi
  3f:	e8                   	.byte 0xe8