syzbot suspects this bug was fixed by commit: commit 32c72165dbd0e246e69d16a3ad348a4851afd415 Author: Kadlecsik József <kadlec@xxxxxxxxxxxxxxxxx> 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=106f42a9e00000 start commit: 131701c6 Merge tag 'leds-5.5-rc8' of git://git.kernel.org/.. git tree: upstream kernel config: https://syzkaller.appspot.com/x/.config?x=83c00afca9cf5153 dashboard link: https://syzkaller.appspot.com/bug?extid=b96275fd6ad891076ced syz repro: https://syzkaller.appspot.com/x/repro.syz?x=15fba721e00000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1339726ee00000 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