syzbot suspects this issue was fixed by commit:
commit f7c6cb1d9728dea9d9f131ef57303d6821afb0f8
Author: Stanislav Fomichev <sdf@xxxxxxxxxx>
Date: Wed Jul 29 00:31:03 2020 +0000
bpf: Expose socket storage to BPF_PROG_TYPE_CGROUP_SOCK
bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=16480fa9900000
start commit: 3e968c9f Merge tag 'ext4_for_linus' of git://git.kernel.or..
git tree: upstream
kernel config: https://syzkaller.appspot.com/x/.config?x=7e8c053ac965e0dd
dashboard link: https://syzkaller.appspot.com/bug?extid=19b469021157c136116a
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=142d219b800000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=143029db800000
If the result looks correct, please mark the issue as fixed by replying with:
#syz fix: bpf: Expose socket storage to BPF_PROG_TYPE_CGROUP_SOCK
For information about bisection process see: https://goo.gl/tpsmEJ#bisection
