linux-kernel - [syzbot] INFO: trying to register non-static key in sco_sock

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Date:   Tue, 08 Mar 2022 08:31:25 -0800
From:   syzbot <syzbot+c893cac8686270f25523@...kaller.appspotmail.com>
To:     davem@...emloft.net, johan.hedberg@...il.com, kuba@...nel.org,
        linux-bluetooth@...r.kernel.org, linux-kernel@...r.kernel.org,
        luiz.dentz@...il.com, marcel@...tmann.org, netdev@...r.kernel.org,
        syzkaller-bugs@...glegroups.com
Subject: [syzbot] INFO: trying to register non-static key in sco_sock_timeout

Hello,

syzbot found the following issue on:

HEAD commit:    91265a6da44d Add linux-next specific files for 20220303
git tree:       linux-next
console output: https://syzkaller.appspot.com/x/log.txt?x=1621ba59700000
kernel config:  https://syzkaller.appspot.com/x/.config?x=617f79440a35673a
dashboard link: https://syzkaller.appspot.com/bug?extid=c893cac8686270f25523
compiler:       gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2

Unfortunately, I don't have any reproducer for this issue yet.

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+c893cac8686270f25523@...kaller.appspotmail.com

INFO: trying to register non-static key.
The code is fine but needs lockdep annotation, or maybe
you didn't initialize this object before use?
turning off the locking correctness validator.
CPU: 0 PID: 21810 Comm: kworker/0:3 Not tainted 5.17.0-rc6-next-20220303-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events sco_sock_timeout
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
 assign_lock_key kernel/locking/lockdep.c:980 [inline]
 register_lock_class+0xf04/0x11b0 kernel/locking/lockdep.c:1293
 __lock_acquire+0x10a/0x56c0 kernel/locking/lockdep.c:4939
 lock_acquire kernel/locking/lockdep.c:5672 [inline]
 lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5637
 lock_sock_nested+0x36/0xf0 net/core/sock.c:3312
 lock_sock include/net/sock.h:1682 [inline]
 sco_sock_timeout+0xd2/0x290 net/bluetooth/sco.c:97
 process_one_work+0x996/0x1610 kernel/workqueue.c:2289
 worker_thread+0x665/0x1080 kernel/workqueue.c:2436
 kthread+0x2e9/0x3a0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>

---
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