Bluetooth: hci1: command 0x0c1a tx timeout
------------[ cut here ]------------
refcnt < 0
WARNING: net/bluetooth/hci_conn.c:649 at hci_conn_timeout+0x16a/0x230 net/bluetooth/hci_conn.c:649, CPU#0: kworker/u9:2/5600
Modules linked in:
CPU: 0 UID: 0 PID: 5600 Comm: kworker/u9:2 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026
Workqueue: hci1 hci_conn_timeout
RIP: 0010:hci_conn_timeout+0x16a/0x230 net/bluetooth/hci_conn.c:649
Code: 44 0f b6 2d 33 af 78 06 31 ff 41 83 e5 40 44 89 ee e8 ba 20 44 f7 45 84 ed 0f 84 02 ff ff ff e9 c9 01 aa f6 e8 97 26 44 f7 90 <0f> 0b 90 e8 8e 26 44 f7 48 8d bb ed f5 ff ff 48 b8 00 00 00 00 00
RSP: 0018:ffffc90003ab7bf8 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff888034468a50 RCX: 0000000000000000
RDX: ffff8880330fa580 RSI: ffffffff8ac820f9 RDI: ffff8880330fa580
RBP: 00000000ffffffff R08: 0000000000000005 R09: 0000000000000000
R10: 00000000ffffffff R11: 000000000000763b R12: ffff888034468000
R13: ffff8880330faa44 R14: 0000000000000000 R15: ffff888037b56c00
FS:  0000000000000000(0000) GS:ffff888123b4f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f97f7deb840 CR3: 000000000eb96000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 process_one_work+0xac7/0x1b10 kernel/workqueue.c:3396
 process_scheduled_works kernel/workqueue.c:3479 [inline]
 worker_thread+0x5ef/0xe50 kernel/workqueue.c:3560
 kthread+0x373/0x450 kernel/kthread.c:436
 ret_from_fork+0x730/0xd60 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>