I've tried reproducing this several times (~20) on both the original qemu-kvm-1.5.3-101.el7 version, as well as on qemu-kvm-rhev-2.3.0-22.el7.x86_64.
This bug is a clone of BZ #1257910, and the last comment in that bug indicates that the problem is not seen at all anymore in ~150 runs of the autotest script. Can you check and see if this is true for the -rhev version (this bug) as well? Thanks.