>>108838379
It's been a while since I had to set up Podman from scratch but I don't remember having to mess with /etc/sub{u,g}id nor installing pasta separately (Gentoo). I do remember having to
chown root:cgroup /sys/fs/cgroup
chmod 775 /sys/fs/cgroup
chown root:cgroup /sys/fs/cgroup/cgroup.{procs,subtree_control,threads}
chmod 664 /sys/fs/cgroup/cgroup.{procs,subtree_control,threads}
though but only because I'm not running a non-systemd distro