syzbot suspects this bug was fixed by commit: commit e7c87bd6cc4ec7b0ac1ed0a88a58f8206c577488 Author: Willem de Bruijn <willemb@xxxxxxxxxx> Date: Wed Jan 16 01:19:22 2019 +0000 bpf: in __bpf_redirect_no_mac pull mac only if present bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=1736f974600000 start commit: b36fdc68 Merge tag 'gpio-v4.19-2' of git://git.kernel.org/.. git tree: upstream kernel config: https://syzkaller.appspot.com/x/.config?x=4c7e83258d6e0156 dashboard link: https://syzkaller.appspot.com/bug?extid=e8c1d30881266e47eb33 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=14d42021400000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=13d09f1e400000 If the result looks correct, please mark the bug fixed by replying with: #syz fix: bpf: in __bpf_redirect_no_mac pull mac only if present For information about bisection process see: https://goo.gl/tpsmEJ#bisection