------------[ cut here ]------------
WARNING: CPU: 1 PID: 5432 at kernel/workqueue.c:2322 __queue_work+0xc13/0x1020 kernel/workqueue.c:2321
Modules linked in:
CPU: 1 PID: 5432 Comm: syz-executor.0 Not tainted 6.9.0-rc5-syzkaller-00036-g9d1ddab261f3 #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+0xc13/0x1020 kernel/workqueue.c:2321
Code: 07 83 c0 03 38 d0 7c 09 84 d2 74 05 e8 b6 29 91 00 8b 5b 2c 31 ff 83 e3 20 89 de e8 07 a1 34 00 85 db 75 2a e8 1e a6 34 00 90 <0f> 0b 90 e9 4d f9 ff ff e8 10 a6 34 00 90 0f 0b 90 e9 fc f8 ff ff
RSP: 0018:ffffc90000588bf0 EFLAGS: 00010046
RAX: 0000000000000000 RBX: 0000000000000100 RCX: ffffffff8159be5a
RDX: ffff88801893c880 RSI: ffffffff8159beb2 RDI: 0000000000000005
RBP: ffff88804b304c58 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000100 R11: 0000000000000002 R12: ffff88804b304c10
R13: 0000000000000001 R14: 0000000080000100 R15: ffff88804be07000
FS:  0000000000000000(0000) GS:ffff88802c300000(0000) knlGS:0000000000000000
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 00000000f7434044 CR3: 000000000d57a000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 call_timer_fn+0x1a0/0x610 kernel/time/timer.c:1793
 expire_timers kernel/time/timer.c:1839 [inline]
 __run_timers+0x567/0xaf0 kernel/time/timer.c:2418
 __run_timer_base kernel/time/timer.c:2429 [inline]
 __run_timer_base kernel/time/timer.c:2422 [inline]
 run_timer_base+0x111/0x190 kernel/time/timer.c:2438
 run_timer_softirq+0x1a/0x40 kernel/time/timer.c:2448
 __do_softirq+0x218/0x922 kernel/softirq.c:554
 invoke_softirq kernel/softirq.c:428 [inline]
 __irq_exit_rcu kernel/softirq.c:633 [inline]
 irq_exit_rcu+0xb9/0x120 kernel/softirq.c:645
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
 sysvec_apic_timer_interrupt+0x95/0xb0 arch/x86/kernel/apic/apic.c:1043
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:lock_acquire+0x1f2/0x560 kernel/locking/lockdep.c:5722
Code: c1 05 1a c5 95 7e 83 f8 01 0f 85 ea 02 00 00 9c 58 f6 c4 02 0f 85 d5 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:ffffc90002e87908 EFLAGS: 00000206
RAX: dffffc0000000000 RBX: 1ffff920005d0f23 RCX: 0000000000000001
RDX: 0000000000000001 RSI: ffffffff8b0cbb60 RDI: ffffffff8b6f2ae0
RBP: 0000000000000200 R08: 0000000000111ea8 R09: fffffbfff27e040d
R10: ffffffff93f0206f R11: 0000000000000003 R12: 0000000000000001
R13: 0000000000000000 R14: ffff88804be07148 R15: 0000000000000000
 touch_wq_lockdep_map+0x78/0x120 kernel/workqueue.c:3901
 __flush_workqueue+0x129/0x1200 kernel/workqueue.c:3943
 drain_workqueue+0x18f/0x3d0 kernel/workqueue.c:4107
 hci_dev_close_sync+0x2cf/0x12b0 net/bluetooth/hci_sync.c:5144
 hci_dev_do_close+0x2e/0x90 net/bluetooth/hci_core.c:554
 hci_unregister_dev+0x1eb/0x600 net/bluetooth/hci_core.c:2773
 vhci_release+0x7f/0x100 drivers/bluetooth/hci_vhci.c:674
 __fput+0x270/0xb80 fs/file_table.c:422
 task_work_run+0x14e/0x250 kernel/task_work.c:180
 exit_task_work include/linux/task_work.h:38 [inline]
 do_exit+0xa7d/0x2c10 kernel/exit.c:878
 do_group_exit+0xd3/0x2a0 kernel/exit.c:1027
 __do_sys_exit_group kernel/exit.c:1038 [inline]
 __se_sys_exit_group kernel/exit.c:1036 [inline]
 __ia32_sys_exit_group+0x3e/0x50 kernel/exit.c:1036
 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline]
 __do_fast_syscall_32+0x75/0x120 arch/x86/entry/common.c:386
 do_fast_syscall_32+0x32/0x80 arch/x86/entry/common.c:411
 entry_SYSENTER_compat_after_hwframe+0x84/0x8e
RIP: 0023:0xf72b7579
Code: Unable to access opcode bytes at 0xf72b754f.
RSP: 002b:00000000ff97608c EFLAGS: 00000286 ORIG_RAX: 00000000000000fc
RAX: ffffffffffffffda RBX: 0000000000000043 RCX: 00000000ff9760d8
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000f72fc106
RBP: 00000000f740eff4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 </TASK>
----------------
Code disassembly (best guess):
   0:	c1 05 1a c5 95 7e 83 	roll   $0x83,0x7e95c51a(%rip)        # 0x7e95c521
   7:	f8                   	clc
   8:	01 0f                	add    %ecx,(%rdi)
   a:	85 ea                	test   %ebp,%edx
   c:	02 00                	add    (%rax),%al
   e:	00 9c 58 f6 c4 02 0f 	add    %bl,0xf02c4f6(%rax,%rbx,2)
  15:	85 d5                	test   %edx,%ebp
  17:	02 00                	add    (%rax),%al
  19:	00 48 85             	add    %cl,-0x7b(%rax)
  1c:	ed                   	in     (%dx),%eax
  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