syzbot has bisected this issue to:
commit e4b8954074f6d0db01c8c97d338a67f9389c042f
Author: Eric Dumazet <edumazet@xxxxxxxxxx>
Date: Tue Dec 7 01:30:37 2021 +0000
netlink: add net device refcount tracker to struct ethnl_req_info
bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=15c42532700000
start commit: e5313968c41b Merge branch 'Split bpf_sk_lookup remote_port..
git tree: bpf-next
final oops: https://syzkaller.appspot.com/x/report.txt?x=17c42532700000
console output: https://syzkaller.appspot.com/x/log.txt?x=13c42532700000
kernel config: https://syzkaller.appspot.com/x/.config?x=c40b67275bfe2a58
dashboard link: https://syzkaller.appspot.com/bug?extid=568dc81cd20b72d4a49f
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=13bb97ce700000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=12062c8e700000
Reported-by: syzbot+568dc81cd20b72d4a49f@xxxxxxxxxxxxxxxxxxxxxxxxx
Fixes: e4b8954074f6 ("netlink: add net device refcount tracker to struct ethnl_req_info")
For information about bisection process see: https://goo.gl/tpsmEJ#bisection
