syzbot suspects this issue was fixed by commit: commit e9edc188fc76499b0b9bd60364084037f6d03773 Author: Eric Dumazet <edumazet@xxxxxxxxxx> Date: Fri Sep 17 22:15:56 2021 +0000 netfilter: conntrack: serialize hash resizes and cleanups bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=1633b4b0b00000 start commit: c84e1efae022 Merge tag 'asm-generic-fixes-5.10-2' of git:/.. git tree: upstream kernel config: https://syzkaller.appspot.com/x/.config?x=7be70951fca93701 dashboard link: https://syzkaller.appspot.com/bug?extid=dbec6695a6565a9c6bc0 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=17c607f1500000 If the result looks correct, please mark the issue as fixed by replying with: #syz fix: netfilter: conntrack: serialize hash resizes and cleanups For information about bisection process see: https://goo.gl/tpsmEJ#bisection