Bluetooth: hci3: unexpected event for opcode 0x2003
------------[ cut here ]------------
refcnt < 0
WARNING: net/bluetooth/hci_conn.c:641 at hci_conn_timeout+0x16a/0x230 net/bluetooth/hci_conn.c:641, CPU#0: kworker/u9:0/52
Modules linked in:
CPU: 0 UID: 0 PID: 52 Comm: kworker/u9:0 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/05/2026
Workqueue: hci4 hci_conn_timeout
RIP: 0010:hci_conn_timeout+0x16a/0x230 net/bluetooth/hci_conn.c:641
Code: 44 0f b6 2d 9b 41 7a 06 31 ff 41 83 e5 40 44 89 ee e8 1a b4 45 f7 45 84 ed 0f 84 02 ff ff ff e9 37 bd ab f6 e8 f7 b9 45 f7 90 <0f> 0b 90 e8 ee b9 45 f7 48 8d bb ed f5 ff ff 48 b8 00 00 00 00 00
RSP: 0018:ffffc90000bc7bf8 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff88801e7c4a50 RCX: 0000000000000000
RDX: ffff88801cfa8000 RSI: ffffffff8ac65c19 RDI: ffff88801cfa8000
RBP: 00000000ffffffff R08: 0000000000000005 R09: 0000000000000000
R10: 00000000ffffffff R11: 000000000000762b R12: ffff88801e7c4000
R13: ffff88801cfa84c4 R14: 0000000000000000 R15: ffff88804511ac00
FS:  0000000000000000(0000) GS:ffff888123b5a000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0950b556c8 CR3: 000000005187e000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000460
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
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>