syzbot suspects this bug was fixed by commit:
commit 32c72165dbd0e246e69d16a3ad348a4851afd415 Author: Kadlecsik József kadlec@blackhole.kfki.hu Date: Sun Jan 19 21:06:49 2020 +0000
netfilter: ipset: use bitmap infrastructure completely
bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=122e7c1de00000 start commit: d5d359b0 Merge branch 'for-linus' of git://git.kernel.org/.. git tree: upstream kernel config: https://syzkaller.appspot.com/x/.config?x=cf8e288883e40aba dashboard link: https://syzkaller.appspot.com/bug?extid=7b6206fb525c1f5ec3f8 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=15909f21e00000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=141a1611e00000
If the result looks correct, please mark the bug fixed by replying with:
#syz fix: netfilter: ipset: use bitmap infrastructure completely
For information about bisection process see: https://goo.gl/tpsmEJ#bisection