syzbot suspects this issue was fixed by commit: commit cc00bcaa589914096edef7fb87ca5cee4a166b5c Author: Subash Abhinov Kasiviswanathan <subashab@xxxxxxxxxxxxxx> Date: Wed Nov 25 18:27:22 2020 +0000 netfilter: x_tables: Switch synchronization to RCU bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=1445cb37500000 start commit: 7cc2a8ea Merge tag 'block-5.8-2020-07-01' of git://git.ker.. git tree: upstream kernel config: https://syzkaller.appspot.com/x/.config?x=7be693511b29b338 dashboard link: https://syzkaller.appspot.com/bug?extid=3654c027d861c6df4b06 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=12948233100000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=11344c05100000 If the result looks correct, please mark the issue as fixed by replying with: #syz fix: netfilter: x_tables: Switch synchronization to RCU For information about bisection process see: https://goo.gl/tpsmEJ#bisection