WARNING: net/bluetooth/hci_conn.c:631 at hci_conn_timeout+0x16a/0x230 net/bluetooth/hci_conn.c:631, CPU#3: kworker/u34:0/64
Modules linked in:
CPU: 3 UID: 0 PID: 64 Comm: kworker/u34:0 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
Workqueue: hci1 hci_conn_timeout

RIP: 0010:hci_conn_timeout+0x16a/0x230 net/bluetooth/hci_conn.c:631
Code: 44 0f b6 2d c3 0c 6c 06 31 ff 41 83 e5 40 44 89 ee e8 2a 77 58 f7 45 84 ed 0f 84 02 ff ff ff e9 77 9c bf f6 e8 07 7d 58 f7 90 <0f> 0b 90 e8 fe 7c 58 f7 48 8d bb fd f5 ff ff 48 b8 00 00 00 00 00
RSP: 0018:ffffc90000d27c18 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff888059828a40 RCX: ffffffff8ab1e23f
RDX: ffff888023b78000 RSI: ffffffff8ab1e339 RDI: ffff888023b78000
RBP: 00000000ffffffff R08: 0000000000000005 R09: 0000000000000000
R10: 00000000ffffffff R11: 000000000000758b R12: ffff888059828000
R13: ffff888023b784c4 R14: ffffffff9122a7a4 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880d60dc000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f22e5e7eff8 CR3: 0000000025ee6000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 process_one_work+0xa23/0x1940 kernel/workqueue.c:3322
 process_scheduled_works kernel/workqueue.c:3405 [inline]
 worker_thread+0x5ef/0xe50 kernel/workqueue.c:3486
 kthread+0x370/0x450 kernel/kthread.c:436
 ret_from_fork+0x72b/0xd50 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>