syzbot suspects this issue was fixed by commit:

commit a97915559f5c5ff1972d678b94fd460c72a3b5f2
Author: JP Kobryn [off-list ref]
Date:   Fri Apr 4 01:10:48 2025 +0000

    cgroup: change rstat function signatures from cgroup-based to css-based

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=12ca4c82580000
start commit:   932fc2f19b74 Merge branch 'irq-save-restore'
git tree:       bpf-next
kernel config:  https://syzkaller.appspot.com/x/.config?x=50c7a61469ce77e7
dashboard link: https://syzkaller.appspot.com/bug?extid=31eb4d4e7d9bc1fc1312
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=161cdfc0580000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=12dfc8df980000

If the result looks correct, please mark the issue as fixed by replying with:

#syz fix: cgroup: change rstat function signatures from cgroup-based to css-based

For information about bisection process see: https://goo.gl/tpsmEJ#bisection