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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/18930
Modules linked in:
CPU: 1 UID: 0 PID: 18930 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 13 81 a2 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 e9 5a 26
RSP: 0018:ffffc90000a08c10 EFLAGS: 00010086
RAX: 1ffff11022c1b151 RBX: 0000000000000008 RCX: ffff8881198e1d40
RDX: ffff88811e013978 RSI: ffffffff8a9fae20 RDI: ffffffff90149e00
RBP: 0000000000000100 R08: ffffffff9011a7b7 R09: 1ffffffff20234f6
R10: dffffc0000000000 R11: ffffffff818d68a0 R12: dffffc0000000000
R13: ffff8881160d8a88 R14: ffffffff90149e00 R15: ffff88811e013978
FS:  0000555587939500(0000) GS:ffff8882a945d000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f744b04eddd CR3: 000000011d520000 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:lock_acquire+0x20b/0x2e0
Code: e9 30 ff ff ff e8 75 16 0d 0a f7 c3 00 02 00 00 0f 84 38 ff ff ff 65 48 8b 05 f1 a3 7a 11 48 3b 44 24 30 75 33 fb 48 83 c4 38 <5b> 41 5c 41 5d 41 5e 41 5f 5d e9 56 fc 0f 0a cc 48 8d 3d 2e 6f 73
RSP: 0018:ffffc90023d97808 EFLAGS: 00000282
RAX: b11a072272e78a00 RBX: 0000000000000246 RCX: 0000000000000046
RDX: 0000000000000001 RSI: ffffffff8e168ad5 RDI: ffffffff8c27c900
RBP: 0000000000000000 R08: 0000000000000008 R09: ffffffff964c0740
R10: 00000000c973f42d R11: 00000000e1ffa291 R12: 0000000000000000
R13: ffff88811e013948 R14: 0000000000000000 R15: 0000000000000001
 touch_wq_lockdep_map+0xcb/0x180
 __flush_workqueue+0x14b/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/0x23c0
 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: 0033:0x7fe5ad19c799
Code: Unable to access opcode bytes at 0x7fe5ad19c76f.
RSP: 002b:00007ffc98d6a458 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007fe5ad232075 RCX: 00007fe5ad19c799
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001
RBP: 0000000000000028 R08: 0000000000000000 R09: 00007fe5ad232050
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc98d6b710
R13: 00007fe5ad232050 R14: 00000000000691a5 R15: 00007ffc98d6d8d0
 </TASK>
