[ovirt-users] libvirt memory leak?

After moving from 4.2 -> 4.3 libvirtd seems to be leaking memory, it recently crashed a host by eating 123GB of RAM. Seems to follow one specific VM around, this is the only VM i have created since 4.3, the others were all made in 4.2 them upgraded to 4.3 What logs would be applicable? Libvirt 4.5.0