------------[ cut here ]------------
workqueue: cannot queue hci_cmd_timeout on wq hci0
WARNING: kernel/workqueue.c:2353 at __queue_work+0xdc4/0x1120 kernel/workqueue.c:2352, CPU#1: ktimers/1/29
Modules linked in:
CPU: 1 UID: 0 PID: 29 Comm: ktimers/1 Tainted: G             L      syzkaller #0 PREEMPT_{RT,(full)} 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:__queue_work+0xde1/0x1120 kernel/workqueue.c:2352
Code: 81 c3 68 01 00 00 4c 8d 35 0c 9b 26 0e 48 89 f8 48 c1 e8 03 42 80 3c 20 00 74 05 e8 f9 d6 a3 00 49 8b 77 18 4c 89 f7 48 89 da <67> 48 0f b9 3a 4c 89 f8 48 c1 e8 03 42 80 3c 20 00 74 08 4c 89 ff
RSP: 0018:ffffc90000a3f988 EFLAGS: 00010046
RAX: 1ffff1100dac0953 RBX: ffff88802b5f7968 RCX: ffff88801d2c3e80
RDX: ffff88802b5f7968 RSI: ffffffff8a438190 RDI: ffffffff8fb45150
RBP: 0000000000000100 R08: 0000000000000100 R09: 0000000000000100
R10: dffffc0000000000 R11: ffffffff818dbd70 R12: dffffc0000000000
R13: 0000000000000008 R14: ffffffff8fb45150 R15: ffff88806d604a80
FS:  0000000000000000(0000) GS:ffff888125cea000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055ae3d743950 CR3: 0000000011a2e000 CR4: 00000000003526f0
DR0: ffffffffffffffff DR1: 00000000000001f8 DR2: 0000000000000002
DR3: ffffffffefffff15 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 call_timer_fn+0x18d/0x5f0 kernel/time/timer.c:1748
 expire_timers kernel/time/timer.c:1794 [inline]
 __run_timers kernel/time/timer.c:2374 [inline]
 __run_timer_base+0x73c/0x9b0 kernel/time/timer.c:2386
 run_timer_base kernel/time/timer.c:2395 [inline]
 run_timer_softirq+0xb7/0x170 kernel/time/timer.c:2405
 handle_softirqs+0x1da/0x6d0 kernel/softirq.c:645
 __do_softirq kernel/softirq.c:679 [inline]
 run_ktimerd+0x6a/0x100 kernel/softirq.c:1183
 smpboot_thread_fn+0x565/0xa70 kernel/smpboot.c:160
 kthread+0x38b/0x470 kernel/kthread.c:436
 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
----------------
Code disassembly (best guess):
   0:	81 c3 68 01 00 00    	add    $0x168,%ebx
   6:	4c 8d 35 0c 9b 26 0e 	lea    0xe269b0c(%rip),%r14        # 0xe269b19
   d:	48 89 f8             	mov    %rdi,%rax
  10:	48 c1 e8 03          	shr    $0x3,%rax
  14:	42 80 3c 20 00       	cmpb   $0x0,(%rax,%r12,1)
  19:	74 05                	je     0x20
  1b:	e8 f9 d6 a3 00       	call   0xa3d719
  20:	49 8b 77 18          	mov    0x18(%r15),%rsi
  24:	4c 89 f7             	mov    %r14,%rdi
  27:	48 89 da             	mov    %rbx,%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:	42 80 3c 20 00       	cmpb   $0x0,(%rax,%r12,1)
  3b:	74 08                	je     0x45
  3d:	4c 89 ff             	mov    %r15,%rdi