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=10620fcdb00000
start commit: 07f8c60fe60f Add linux-next specific files for 20211220
git tree: linux-next
final oops: https://syzkaller.appspot.com/x/report.txt?x=12620fcdb00000
console output: https://syzkaller.appspot.com/x/log.txt?x=14620fcdb00000
kernel config: https://syzkaller.appspot.com/x/.config?x=2060504830b9124a
dashboard link: https://syzkaller.appspot.com/bug?extid=8836466a79f4175961b0
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=12058fcbb00000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=17141adbb00000
Reported-by: syzbot+8836466a79f4175961b0@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
