INFO: trying to register non-static key in neigh_periodic_work

[syzbot]

Hello,

syzbot found the following issue on:

HEAD commit: cf256fbc Linux 4.14.231
git tree: linux-4.14.y
console output: https://syzkaller.appspot.com/x/log.txt?x=1709ad4dd00000
kernel config: https://syzkaller.appspot.com/x/.config?x=403e68efdb1dcca6
dashboard link: https://syzkaller.appspot.com/bug?extid=4c79bfd3ac30dbddd0ca

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+4c79bf...@syzkaller.appspotmail.com

INFO: trying to register non-static key.
the code is fine but needs lockdep annotation.
turning off the locking correctness validator.
CPU: 1 PID: 2127 Comm: kworker/1:18 Not tainted 4.14.231-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events_power_efficient neigh_periodic_work
Call Trace:
__dump_stack lib/dump_stack.c:17 [inline]
dump_stack+0x1b2/0x281 lib/dump_stack.c:58
register_lock_class+0x32b/0x1320 kernel/locking/lockdep.c:768
__lock_acquire+0x167/0x3f20 kernel/locking/lockdep.c:3378
lock_acquire+0x170/0x3f0 kernel/locking/lockdep.c:3998
__raw_write_lock include/linux/rwlock_api_smp.h:210 [inline]
_raw_write_lock+0x2a/0x40 kernel/locking/spinlock.c:296
neigh_periodic_work+0x27b/0x8b0 net/core/neighbour.c:826
process_one_work+0x793/0x14a0 kernel/workqueue.c:2116
worker_thread+0x5cc/0xff0 kernel/workqueue.c:2250
kthread+0x30d/0x420 kernel/kthread.c:232
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404
ufs: ufs was compiled with read-only support, can't be mounted as read-write


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[syzbot]

Auto-closing this bug as obsolete.
Crashes did not happen for a while, no reproducer and no activity.