------------[ cut here ]------------
workqueue: cannot queue hci_tx_work on wq hci1
WARNING: kernel/workqueue.c:2298 at __queue_work+0xd3f/0x1040 kernel/workqueue.c:2296, CPU#1: syz.5.4040/21529
Modules linked in:
CPU: 1 UID: 0 PID: 21529 Comm: syz.5.4040 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
RIP: 0010:__queue_work+0xd67/0x1040 kernel/workqueue.c:2296
Code: a6 0e 49 8d 7d 18 48 89 f8 48 c1 e8 03 42 80 3c 20 00 74 05 e8 0a de a3 00 49 8b 75 18 49 81 c7 70 01 00 00 4c 89 f7 4c 89 fa <67> 48 0f b9 3a 4c 89 e8 48 c1 e8 03 42 80 3c 20 00 74 08 4c 89 ef
RSP: 0018:ffffc900057475a0 EFLAGS: 00010082
RAX: 1ffff1100b21298a RBX: 0000000000000008 RCX: 0000000000080000
RDX: ffff8880377ed170 RSI: ffffffff8a9a5c90 RDI: ffffffff903333b0
RBP: 0000000000000000 R08: ffff888059094c3f R09: 1ffff1100b212987
R10: dffffc0000000000 R11: ffffed100b212988 R12: dffffc0000000000
R13: ffff888059094c38 R14: ffffffff903333b0 R15: ffff8880377ed170
FS:  00007f45a7ca66c0(0000) GS:ffff8881253a0000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9e6bb29e9c CR3: 0000000041512000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 queue_work_on+0x106/0x1d0 kernel/workqueue.c:2444
 l2cap_send_conn_req+0x243/0x370 net/bluetooth/l2cap_core.c:1255
 l2cap_start_connection net/bluetooth/l2cap_core.c:1410 [inline]
 l2cap_do_start+0x63e/0x810 net/bluetooth/l2cap_core.c:1476
 l2cap_chan_connect+0xa9d/0xed0 net/bluetooth/l2cap_core.c:7321
 l2cap_sock_connect+0x5ea/0x7f0 net/bluetooth/l2cap_sock.c:256
 kernel_connect+0x141/0x1c0 net/socket.c:3740
 rfcomm_session_create net/bluetooth/rfcomm/core.c:811 [inline]
 __rfcomm_dlc_open net/bluetooth/rfcomm/core.c:388 [inline]
 rfcomm_dlc_open+0x61d/0x1210 net/bluetooth/rfcomm/core.c:431
 rfcomm_sock_connect+0x2f7/0x640 net/bluetooth/rfcomm/sock.c:422
 __sys_connect_file net/socket.c:2148 [inline]
 __sys_connect+0x312/0x450 net/socket.c:2167
 __do_sys_connect net/socket.c:2173 [inline]
 __se_sys_connect net/socket.c:2170 [inline]
 __x64_sys_connect+0x7a/0x90 net/socket.c:2170
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f45a6d9ce59
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f45a7ca6028 EFLAGS: 00000246 ORIG_RAX: 000000000000002a
RAX: ffffffffffffffda RBX: 00007f45a7015fa0 RCX: 00007f45a6d9ce59
RDX: 000000000000000a RSI: 0000200000000040 RDI: 0000000000000009
RBP: 00007f45a6e32d6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f45a7016038 R14: 00007f45a7015fa0 R15: 00007ffd21e89618
 </TASK>
----------------
Code disassembly (best guess), 2 bytes skipped:
   0:	49 8d 7d 18          	lea    0x18(%r13),%rdi
   4:	48 89 f8             	mov    %rdi,%rax
   7:	48 c1 e8 03          	shr    $0x3,%rax
   b:	42 80 3c 20 00       	cmpb   $0x0,(%rax,%r12,1)
  10:	74 05                	je     0x17
  12:	e8 0a de a3 00       	call   0xa3de21
  17:	49 8b 75 18          	mov    0x18(%r13),%rsi
  1b:	49 81 c7 70 01 00 00 	add    $0x170,%r15
  22:	4c 89 f7             	mov    %r14,%rdi
  25:	4c 89 fa             	mov    %r15,%rdx
* 28:	67 48 0f b9 3a       	ud1    (%edx),%rdi <-- trapping instruction
  2d:	4c 89 e8             	mov    %r13,%rax
  30:	48 c1 e8 03          	shr    $0x3,%rax
  34:	42 80 3c 20 00       	cmpb   $0x0,(%rax,%r12,1)
  39:	74 08                	je     0x43
  3b:	4c 89 ef             	mov    %r13,%rdi