syzbot suspects this issue was fixed by commit:
commit d068eebbd4822b6c14a7ea375dfe53ca5c69c776
Author: Michal Koutný <mkoutny@xxxxxxxx>
Date: Fri Dec 17 15:48:54 2021 +0000
cgroup/cpuset: Make child cpusets restrict parents on v1 hierarchy
bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=142f17f7700000
start commit: e5313968c41b Merge branch 'Split bpf_sk_lookup remote_port..
git tree: bpf-next
kernel config: https://syzkaller.appspot.com/x/.config?x=c40b67275bfe2a58
dashboard link: https://syzkaller.appspot.com/bug?extid=568dc81cd20b72d4a49f
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=13bb97ce700000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=12062c8e700000
If the result looks correct, please mark the issue as fixed by replying with:
#syz fix: cgroup/cpuset: Make child cpusets restrict parents on v1 hierarchy
For information about bisection process see: https://goo.gl/tpsmEJ#bisection
