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workqueue: cannot queue hci_cmd_timeout on wq hci0
WARNING: kernel/workqueue.c:2353 at __queue_work+0xd83/0x10d0 kernel/workqueue.c:2352, 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+0xd9f/0x10d0 kernel/workqueue.c:2352
Code: 49 81 c7 70 01 00 00 4c 8d 35 7d f9 ee 0e 48 89 f8 48 c1 e8 03 80 3c 18 00 74 05 e8 5b 6b ab 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:ffffc90000007bc0 EFLAGS: 00010046
RAX: 1ffff110085d814e RBX: dffffc0000000000 RCX: ffff88803366a580
RDX: ffff8880444ef170 RSI: ffffffff8ad98fb0 RDI: ffffffff907d5fa0
RBP: 0000000000010000 R08: 0000000000000100 R09: 1ffffffff20f512f
R10: dffffc0000000000 R11: ffffffff818e6d40 R12: 0000000000000008
R13: ffff888042ec0a58 R14: ffffffff907d5fa0 R15: ffff8880444ef170
FS:  00007fa425b536c0(0000) GS:ffff88808c2bb000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa424df46b8 CR3: 000000001d0ef000 CR4: 0000000000352ef0
Call Trace:
 <IRQ>
 call_timer_fn+0x18d/0x5f0 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+0x226/0x860 kernel/softirq.c:645
 __do_softirq kernel/softirq.c:679 [inline]
 invoke_softirq kernel/softirq.c:519 [inline]
 __irq_exit_rcu+0xcb/0x220 kernel/softirq.c:758
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:775
 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+0x232/0x350 kernel/locking/lockdep.c:5947
Code: ff ff ff e8 30 ee 45 0a f7 44 24 10 00 02 00 00 0f 84 38 ff ff ff 65 48 8b 05 92 e8 f2 11 48 3b 44 24 50 75 33 fb 48 83 c4 58 <5b> 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc 48 8d 3d 47 5c da
RSP: 0018:ffffc9000c307908 EFLAGS: 00000282
RAX: 45a43ef6f7e3c900 RBX: 0000000000000001 RCX: 0000000000000046
RDX: ffff88803366b158 RSI: ffffffff8e6a3f12 RDI: ffffffff8c6dcd80
RBP: ffff88803366a580 R08: 0000000000000008 R09: ffffffff96bb4b78
R10: 00000000c8a2d8b5 R11: 0000000019fc19cb R12: ffff8880444ef140
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000246
 touch_wq_lockdep_map+0xcb/0x180 kernel/workqueue.c:4111
 __flush_workqueue+0x148/0x1470 kernel/workqueue.c:4153
 drain_workqueue+0xce/0x380 kernel/workqueue.c:4317
 hci_dev_close_sync+0x606/0x10c0 net/bluetooth/hci_sync.c:5603
 hci_dev_do_close net/bluetooth/hci_core.c:502 [inline]
 hci_dev_close+0x108/0x260 net/bluetooth/hci_core.c:527
 sock_do_ioctl+0x101/0x320 net/socket.c:1325
 sock_ioctl+0x57a/0x7e0 net/socket.c:1446
 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:61 [inline]
 do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fa424b9e199
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:00007fa425b52fe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fa424e25fa0 RCX: 00007fa424b9e199
RDX: 0000000000000000 RSI: 00000000400448ca RDI: 0000000000000005
RBP: 00007fa424c350b8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fa424e26038 R14: 00007fa424e25fa0 R15: 00007ffdef743438
 </TASK>
----------------
Code disassembly (best guess):
   0:	49 81 c7 70 01 00 00 	add    $0x170,%r15
   7:	4c 8d 35 7d f9 ee 0e 	lea    0xeeef97d(%rip),%r14        # 0xeeef98b
   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 5b 6b ab 00       	call   0xab6b7b
  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