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workqueue: cannot queue hci_cmd_timeout on wq hci0
WARNING: kernel/workqueue.c:2298 at __queue_work+0xd1f/0xfc0, CPU#1: syz-executor/14540
Modules linked in:
CPU: 1 UID: 0 PID: 14540 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+0xd4a/0xfc0
Code: 83 c5 18 4c 89 e8 48 c1 e8 03 42 80 3c 20 00 74 08 4c 89 ef e8 c7 ae a3 00 49 8b 75 00 49 81 c7 70 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:ffffc90000a08bf0 EFLAGS: 00010082
RAX: 1ffff11022afb94e RBX: 0000000000000008 RCX: ffff88811c541d80
RDX: ffff8881174e1970 RSI: ffffffff8a9b3050 RDI: ffffffff90338d70
RBP: 0000000000000100 R08: ffffffff903096f7 R09: 1ffffffff20612de
R10: dffffc0000000000 R11: ffffffff818d3630 R12: dffffc0000000000
R13: ffff8881157dca70 R14: ffffffff90338d70 R15: ffff8881174e1970
FS:  0000555566d8b500(0000) GS:ffff8882a9293000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555566d9e9b8 CR3: 00000001133ee000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 call_timer_fn+0x192/0x5e0
 __run_timer_base+0x67e/0x8b0
 run_timer_softirq+0xb7/0x170
 handle_softirqs+0x22a/0x840
 __irq_exit_rcu+0xca/0x220
 irq_exit_rcu+0x9/0x30
 sysvec_apic_timer_interrupt+0xa6/0xc0
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:lock_acquire+0x221/0x350
Code: ff ff ff e8 e1 14 06 0a f7 44 24 08 00 02 00 00 0f 84 3a ff ff ff 65 48 8b 05 cb 2f 97 11 48 3b 44 24 58 75 33 fb 48 83 c4 60 <5b> 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc 48 8d 3d 98 4c 92
RSP: 0018:ffffc90003657808 EFLAGS: 00000282
RAX: 122dc542407b4300 RBX: 0000000000000000 RCX: 0000000000000046
RDX: 0000000000000001 RSI: ffffffff8e217007 RDI: ffffffff8c28aa60
RBP: ffffffff818d7115 R08: 0000000000000008 R09: ffffffff965c7ea0
R10: 000000002dc6bf0c R11: 00000000bacd4c31 R12: 0000000000000000
R13: ffff8881174e1940 R14: 0000000000000001 R15: 0000000000000246
 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/0xa60
 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+0x15f/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f7592f9cdd9
Code: Unable to access opcode bytes at 0x7f7592f9cdaf.
RSP: 002b:00007fff507d5618 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f7592f9cdd9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000043
RBP: 00007f7593033cdc R08: 0000000000000000 R09: 00000000000927c0
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000000000b
R13: 00000000000927c0 R14: 000000000005dbe3 R15: 00007fff507d57d0
 </TASK>
