Re: [libvirt] Fwd: libvirtd failing on MacOS in setgroups

>>>> I get the following error when running libvirtd on MacOS as root: >>>> >>>> 2019-07-11 00:12:33.673+0000: 123145573953536: error : >>>> qemuProcessQMPLaunch:8501 : internal error: Failed to start QEMU >>>> binary /usr/local/bin/qemu-system-x86_64 for probing: libvirt: error >>>> : cannot set supplemental groups: Invalid argument >>>

> +++ b/src/util/virutil.c > @@ -1043,6 +1043,7 @@ virSetUIDGID(uid_t uid, gid_t gid, gid_t *groups ATTRIBUTE_UNUSED, > } > > # if HAVE_SETGROUPS > + VIR_DEBUG("setgroups %d max %d", ngroups, NGROUPS_MAX); > if (gid != (gid_t)-1 && setgroups(ngroups, groups) < 0) { > virReportSystemError(errno, "%s", > _("cannot set supplemental groups")); > > Yes, there's an overflow: 2019-08-21 18:25:37.943+0000: 123145413914624: debug : virSetUIDGID:1046 : setgroups 23 max 16 Related samba ticket (it also has references to the python and dovecot issues): https://bugzilla.samba.org/show_bug.cgi?id=8773