------------[ cut here ]------------
workqueue: cannot queue hci_conn_timeout on wq hci0
WARNING: kernel/workqueue.c:2437 at __queue_work+0xdfc/0x1360 kernel/workqueue.c:2436, CPU#0: syz.1.11/5888
Modules linked in:
CPU: 0 UID: 0 PID: 5888 Comm: syz.1.11 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/15/2026
RIP: 0010:__queue_work+0xe1a/0x1360 kernel/workqueue.c:2436
Code: 28 78 01 00 00 4c 8d 35 24 d6 31 10 48 89 f8 48 c1 e8 03 80 3c 18 00 74 05 e8 22 60 b1 00 49 8b 77 18 4c 89 f7 48 8b 54 24 28 <67> 48 0f b9 3a 4c 89 f8 48 c1 e8 03 80 3c 18 00 74 08 4c 89 ff e8
RSP: 0018:ffffc90000007be8 EFLAGS: 00010046
RAX: 1ffff1100ff1414d RBX: dffffc0000000000 RCX: ffff888031bbddc0
RDX: ffff88807f0e2178 RSI: ffffffff8af492b0 RDI: ffffffff91c0c490
RBP: 0000000000010000 R08: 0000000000000100 R09: 1ffffffff237bdd7
R10: dffffc0000000000 R11: ffffffff818ef7a0 R12: ffff88807f0e21c0
R13: 0000000000000008 R14: ffffffff91c0c490 R15: ffff88807f8a0a50
FS:  0000000000000000(0000) GS:ffff888123410000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f242d5e79b0 CR3: 000000003704c000 CR4: 0000000000350ef0
Call Trace:
 <IRQ>
 call_timer_fn+0x18d/0x5f0 kernel/time/timer.c:1749
 expire_timers kernel/time/timer.c:1795 [inline]
 __run_timers kernel/time/timer.c:2375 [inline]
 __run_timer_base+0x67e/0x8b0 kernel/time/timer.c:2387
 run_timer_base kernel/time/timer.c:2396 [inline]
 run_timer_softirq+0xb7/0x170 kernel/time/timer.c:2406
 handle_softirqs+0x265/0x8d0 kernel/softirq.c:669
 __do_softirq kernel/softirq.c:703 [inline]
 invoke_softirq kernel/softirq.c:542 [inline]
 __irq_exit_rcu+0xc6/0x220 kernel/softirq.c:786
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:809
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1062 [inline]
 sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1062
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:lock_acquire+0x232/0x350 kernel/locking/lockdep.c:5947
Code: ff ff ff e8 00 40 60 0a f7 44 24 10 00 02 00 00 0f 84 38 ff ff ff 65 48 8b 05 02 ea 3c 13 48 3b 44 24 50 75 33 fb 48 83 c4 58 <5b> 41 5c 41 5d 41 5e 41 5f 5d e9 ca 2a 6c ff cc 48 8d 3d c7 12 1d
RSP: 0018:ffffc90004f0f568 EFLAGS: 00000282
RAX: 442b78cda6ec3b00 RBX: 0000000000000001 RCX: 0000000000000046
RDX: ffff888031bbe998 RSI: ffffffff8e933c05 RDI: ffffffff8c8e9d80
RBP: ffff888031bbddc0 R08: 0000000000000008 R09: ffffffff9818eae8
R10: 000000001e99e612 R11: 000000003bb21661 R12: ffff88807f0e2148
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000246
 touch_wq_lockdep_map+0xcb/0x180 kernel/workqueue.c:4272
 __flush_workqueue+0x148/0x10b0 kernel/workqueue.c:4314
 drain_workqueue+0xce/0x380 kernel/workqueue.c:4478
 hci_dev_close_sync+0x5d6/0xf90 net/bluetooth/hci_sync.c:5667
 hci_dev_do_close net/bluetooth/hci_core.c:502 [inline]
 hci_unregister_dev+0x23a/0x5c0 net/bluetooth/hci_core.c:2694
 vhci_release+0x16d/0x1c0 drivers/bluetooth/hci_vhci.c:704
 __fput+0x408/0xa40 fs/file_table.c:512
 fput_close_sync+0x11f/0x240 fs/file_table.c:618
 filp_close_sync+0x6e/0xa0 fs/open.c:1573
 close_files fs/file.c:572 [inline]
 put_files_struct+0x230/0x3c0 fs/file.c:584
 do_exit+0x6f0/0x2360 kernel/exit.c:977
 do_group_exit+0x22d/0x2f0 kernel/exit.c:1123
 get_signal+0x136a/0x1430 kernel/signal.c:3113
 arch_do_signal_or_restart+0xbb/0x860 arch/x86/kernel/signal.c:337
 __exit_to_user_mode_loop kernel/entry/common.c:66 [inline]
 exit_to_user_mode_loop+0x10e/0x770 kernel/entry/common.c:101
 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:207 [inline]
 syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:230 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:343 [inline]
 do_syscall_64+0x328/0x520 arch/x86/entry/syscall_64.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7efd43d6034e
Code: Unable to access opcode bytes at 0x7efd43d60324.
RSP: 002b:00007efd44ba7f58 EFLAGS: 00000246 ORIG_RAX: 00000000000000e6
RAX: fffffffffffffdfc RBX: 00007efd44ba86c0 RCX: 00007efd43d6034e
RDX: 00007efd44ba7fb0 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007efd43e37b70 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007efd44026038 R14: 00007efd44025fa0 R15: 00007ffc4cbac918
 </TASK>
----------------
Code disassembly (best guess):
   0:	28 78 01             	sub    %bh,0x1(%rax)
   3:	00 00                	add    %al,(%rax)
   5:	4c 8d 35 24 d6 31 10 	lea    0x1031d624(%rip),%r14        # 0x1031d630
   c:	48 89 f8             	mov    %rdi,%rax
   f:	48 c1 e8 03          	shr    $0x3,%rax
  13:	80 3c 18 00          	cmpb   $0x0,(%rax,%rbx,1)
  17:	74 05                	je     0x1e
  19:	e8 22 60 b1 00       	call   0xb16040
  1e:	49 8b 77 18          	mov    0x18(%r15),%rsi
  22:	4c 89 f7             	mov    %r14,%rdi
  25:	48 8b 54 24 28       	mov    0x28(%rsp),%rdx
* 2a:	67 48 0f b9 3a       	ud1    (%edx),%rdi <-- trapping instruction
  2f:	4c 89 f8             	mov    %r15,%rax
  32:	48 c1 e8 03          	shr    $0x3,%rax
  36:	80 3c 18 00          	cmpb   $0x0,(%rax,%rbx,1)
  3a:	74 08                	je     0x44
  3c:	4c 89 ff             	mov    %r15,%rdi
  3f:	e8                   	.byte 0xe8