Is there a limit on the size of UID ranges usable for subuid? I'm trying to run a rootless container, and in that container use sssd user info from Active Directory. sssd produces very large UID and GID values, which I think is the problem that's being reported. First of all, the host system can resolve information for a user named build: [gitlab-runner@dvpackerbld03 ~]$ id build uid=1985001175(build) gid=1985001156(development) groups=1985001156(development),987(docker) And I can run the container that I've created, and resolve information for that user there, too: [gitlab-runner@dvpackerbld03 ~]$ podman run -it \ uid=1985001175(build) gid=1985001156(development) groups=1985001156(development),996(docker) But if I try to run "su build" within that container, I get an error: [gitlab-runner@dvpackerbld03 ~]$ podman run -it \ --volume=/var/lib/sss/pipes/:/var/lib/sss/pipes/:rw \ --volume=/etc/sssd/:/etc/sssd/:ro \ --volume=/etc/krb5.conf:/etc/krb5.conf:ro \ --volume=/etc/ipa/ca.crt:/etc/ipa/ca.crt:ro \ --volume=/etc/nsswitch.conf:/etc/nsswitch.conf:ro \ e1f5919f1888 su build -c ls su: cannot set groups: Invalid argument subuid and subgid are set up as: [gitlab-runner@dvpackerbld03 ~]$ cat /etc/subuid gitlab-runner:110000:3000000000 [gitlab-runner@dvpackerbld03 ~]$ cat /etc/subgid gitlab-runner:110000:3000000000