syzbot suspects this bug was fixed by commit:
commit 99b79c3900d4627672c85d9f344b5b0f06bc2a4d
Author: Cong Wang <xiyou.wangcong@xxxxxxxxx>
Date: Thu Feb 13 06:53:52 2020 +0000
netfilter: xt_hashlimit: unregister proc file before releasing mutex
bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=17446eb1e00000
start commit: f2850dd5 Merge tag 'kbuild-fixes-v5.6' of git://git.kernel..
git tree: upstream
kernel config: https://syzkaller.appspot.com/x/.config?x=735296e4dd620b10
dashboard link: https://syzkaller.appspot.com/bug?extid=84936245a918e2cddb32
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=17a96c29e00000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=12fcc65ee00000
If the result looks correct, please mark the bug fixed by replying with:
#syz fix: netfilter: xt_hashlimit: unregister proc file before releasing mutex
For information about bisection process see: https://goo.gl/tpsmEJ#bisection
