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workqueue: cannot queue hci_cmd_timeout on wq hci2
WARNING: kernel/workqueue.c:2271 at __queue_work+0xd53/0x1020, CPU#1: syz-executor/5823
Modules linked in:
CPU: 1 UID: 0 PID: 5823 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:__queue_work+0xd7e/0x1020
Code: 83 c5 18 4c 89 e8 48 c1 e8 03 42 80 3c 20 00 74 08 4c 89 ef e8 23 5e a1 00 49 8b 75 00 49 81 c7 78 01 00 00 4c 89 f7 4c 89 fa <67> 48 0f b9 3a 48 83 c4 58 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc
RSP: 0018:ffffc90000a18c10 EFLAGS: 00010086
RAX: 1ffff1102375d951 RBX: 0000000000000008 RCX: ffff88810b5657c0
RDX: ffff888114a93978 RSI: ffffffff8a9d75c0 RDI: ffffffff9014de70
RBP: 0000000000000100 R08: ffffffff9011e7b7 R09: 1ffffffff2023cf6
R10: dffffc0000000000 R11: ffffffff818d5e10 R12: dffffc0000000000
R13: ffff88811baeca88 R14: ffffffff9014de70 R15: ffff888114a93978
FS:  0000555594a41500(0000) GS:ffff8882a9462000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe0251863c0 CR3: 000000016a256000 CR4: 00000000000006f0
Call Trace:
 <IRQ>
 call_timer_fn+0x192/0x640
 __run_timer_base+0x67e/0x8b0
 run_timer_softirq+0xb7/0x170
 handle_softirqs+0x22a/0x870
 __irq_exit_rcu+0x5f/0x150
 irq_exit_rcu+0x9/0x30
 sysvec_apic_timer_interrupt+0xa6/0xc0
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:_raw_spin_unlock_irq+0x29/0x50
Code: 90 f3 0f 1e fa 53 48 89 fb 48 83 c7 18 48 8b 74 24 08 e8 aa d1 f2 f5 48 89 df e8 e2 46 f3 f5 e8 8d 9e 1e f6 fb bf 01 00 00 00 <e8> 32 04 e5 f5 65 8b 05 1b 02 6d 07 85 c0 74 07 5b e9 01 48 00 00
RSP: 0018:ffffc9000677f810 EFLAGS: 00000202
RAX: 000000000004833b RBX: ffff8881001e1000 RCX: 0000000080000001
RDX: 0000000000000006 RSI: ffffffff8defcba0 RDI: 0000000000000001
RBP: dffffc0000000000 R08: ffffffff9011e7b7 R09: 1ffffffff2023cf6
R10: dffffc0000000000 R11: fffffbfff2023cf7 R12: ffff888114a93800
R13: ffff8881001e1000 R14: 0000000000000001 R15: ffff8881176f7c10
 flush_workqueue_prep_pwqs+0x3e9/0x4f0
 __flush_workqueue+0x45d/0x14f0
 drain_workqueue+0xd3/0x390
 hci_dev_close_sync+0x62f/0x10e0
 hci_unregister_dev+0x21a/0x5a0
 vhci_release+0x152/0x1a0
 __fput+0x44f/0xa70
 task_work_run+0x1d9/0x270
 do_exit+0x70f/0x22c0
 do_group_exit+0x21b/0x2d0
 __x64_sys_exit_group+0x3f/0x40
 x64_sys_call+0x221a/0x2240
 do_syscall_64+0x14d/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f07eb99c819
Code: Unable to access opcode bytes at 0x7f07eb99c7ef.
RSP: 002b:00007ffd423ff8d8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007f07eba3206d RCX: 00007f07eb99c819
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001
RBP: 0000000000000005 R08: 0000000000000000 R09: 00007f07eba32048
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd42400b90
R13: 00007f07eba32048 R14: 000000000001178d R15: 00007ffd42401c60
 </TASK>
