Also, drop UID/GID validity checks from getpeercred() as the kernel will never pass us invalid UID/GID on userns, but the overflow UID/GID instead. Add a comment about this.
Also, drop UID/GID validity checks from getpeercred() as the kernel will never pass us invalid UID/GID on userns, but the overflow UID/GID instead. Add a comment about this.