Hello,

syzbot has tested the proposed patch and the reproducer did not trigger any issue:

Reported-and-tested-by: syzbot+283ce5a46486d6acdbaf@syzkaller.appspotmail.com

Tested on:

commit:         595fac5c cgroup: verify that source is a string
git tree:       https://gitlab.com/brauner/linux.git
kernel config:  https://syzkaller.appspot.com/x/.config?x=20276914ec6ad813
dashboard link: https://syzkaller.appspot.com/bug?extid=283ce5a46486d6acdbaf
compiler:       

Note: testing is done by a robot and is best-effort only.