------------[ cut here ]------------
WARNING: CPU: 1 PID: 12357 at kernel/workqueue.c:1728 __queue_work+0xdc6/0x11d0 kernel/workqueue.c:1727
Modules linked in:
CPU: 1 PID: 12357 Comm: syz-executor.2 Not tainted 6.8.0-rc5-syzkaller-00278-g603c04e27c3e #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:__queue_work+0xdc6/0x11d0 kernel/workqueue.c:1727
Code: 07 83 c0 03 38 d0 7c 09 84 d2 74 05 e8 83 b1 8c 00 8b 5b 2c 31 ff 83 e3 20 89 de e8 e4 7d 33 00 85 db 75 56 e8 fb 82 33 00 90 <0f> 0b 90 e9 ac f8 ff ff e8 ed 82 33 00 90 0f 0b 90 e9 5b f8 ff ff
RSP: 0018:ffffc90000890c28 EFLAGS: 00010046
RAX: 0000000000000000 RBX: 0000000000000100 RCX: ffffffff8157cb1c
RDX: ffff888029850000 RSI: ffffffff8157cb75 RDI: 0000000000000005
RBP: ffff88803fa2cc58 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000100 R11: 0000000000000002 R12: ffff88803fa2cc10
R13: 0000000000000100 R14: ffffffff8157d530 R15: ffff88803dd11000
FS:  0000000000000000(0000) GS:ffff88806b300000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffecb387b58 CR3: 0000000024f9c000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 call_timer_fn+0x193/0x5a0 kernel/time/timer.c:1700
 expire_timers kernel/time/timer.c:1746 [inline]
 __run_timers+0x57e/0xaa0 kernel/time/timer.c:2038
 run_timer_softirq+0x58/0xd0 kernel/time/timer.c:2051
 __do_softirq+0x21c/0x8e7 kernel/softirq.c:553
 invoke_softirq kernel/softirq.c:427 [inline]
 __irq_exit_rcu kernel/softirq.c:632 [inline]
 irq_exit_rcu+0xbb/0x120 kernel/softirq.c:644
 sysvec_apic_timer_interrupt+0x95/0xb0 arch/x86/kernel/apic/apic.c:1076
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:649
RIP: 0010:lock_acquire+0x1ef/0x520 kernel/locking/lockdep.c:5722
Code: c1 05 fd c5 97 7e 83 f8 01 0f 85 b8 02 00 00 9c 58 f6 c4 02 0f 85 a3 02 00 00 48 85 ed 74 01 fb 48 b8 00 00 00 00 00 fc ff df <48> 01 c3 48 c7 03 00 00 00 00 48 c7 43 08 00 00 00 00 48 8b 84 24
RSP: 0018:ffffc900039678c0 EFLAGS: 00000206
RAX: dffffc0000000000 RBX: 1ffff9200072cf1a RCX: 0000000000000001
RDX: 0000000000000001 RSI: ffffffff8b0cb6c0 RDI: ffffffff8b6e9a00
RBP: 0000000000000200 R08: 000000000013a0e8 R09: fffffbfff27dca02
R10: ffffffff93ee5017 R11: 1ffffffff26b992d R12: 0000000000000001
R13: 0000000000000000 R14: ffff88803dd11138 R15: 0000000000000000
 __flush_workqueue+0x14b/0x1340 kernel/workqueue.c:3146
 drain_workqueue+0x18f/0x3d0 kernel/workqueue.c:3311
 hci_dev_close_sync+0x326/0x1160 net/bluetooth/hci_sync.c:4939
 hci_dev_do_close+0x2e/0x90 net/bluetooth/hci_core.c:554
 hci_unregister_dev+0x1eb/0x600 net/bluetooth/hci_core.c:2739
 vhci_release+0x7f/0x100 drivers/bluetooth/hci_vhci.c:674
 __fput+0x270/0xb80 fs/file_table.c:376
 task_work_run+0x14f/0x250 kernel/task_work.c:180
 exit_task_work include/linux/task_work.h:38 [inline]
 do_exit+0xa8a/0x2ad0 kernel/exit.c:871
 do_group_exit+0xd4/0x2a0 kernel/exit.c:1020
 __do_sys_exit_group kernel/exit.c:1031 [inline]
 __se_sys_exit_group kernel/exit.c:1029 [inline]
 __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1029
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xd5/0x270 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7f38fca7dda9
Code: Unable to access opcode bytes at 0x7f38fca7dd7f.
RSP: 002b:00007fff2a605d58 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f38fca7dda9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000043
RBP: 00007f38fcadb288 R08: 00007fff2a603af7 R09: 000000000007feb2
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 000000000007feb2 R14: 0000000000000000 R15: 0000000000000005
 </TASK>
----------------
Code disassembly (best guess):
   0:	c1 05 fd c5 97 7e 83 	roll   $0x83,0x7e97c5fd(%rip)        # 0x7e97c604
   7:	f8                   	clc
   8:	01 0f                	add    %ecx,(%rdi)
   a:	85 b8 02 00 00 9c    	test   %edi,-0x63fffffe(%rax)
  10:	58                   	pop    %rax
  11:	f6 c4 02             	test   $0x2,%ah
  14:	0f 85 a3 02 00 00    	jne    0x2bd
  1a:	48 85 ed             	test   %rbp,%rbp
  1d:	74 01                	je     0x20
  1f:	fb                   	sti
  20:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  27:	fc ff df
* 2a:	48 01 c3             	add    %rax,%rbx <-- trapping instruction
  2d:	48 c7 03 00 00 00 00 	movq   $0x0,(%rbx)
  34:	48 c7 43 08 00 00 00 	movq   $0x0,0x8(%rbx)
  3b:	00
  3c:	48                   	rex.W
  3d:	8b                   	.byte 0x8b
  3e:	84                   	.byte 0x84
  3f:	24                   	.byte 0x24