Comment # 8 on bug 1175642 from James Fehlig

BTW, Virtuozzo has also observed crashes on shutdown. It sure smells like you
are encountering some of these now. They have been working on a patch series to
address the crashes, some of which have been ACKed but none pushed yet

https://www.redhat.com/archives/libvir-list/2020-July/msg01606.html

If you are willing to test the latest libvirt packages from the Virtualization
repo we may be able to help review/test the series. E.g. it would be
interesting to see if you can reproduce with libvirt 6.6.0, then add that
series on top and see if it helps.