Comment # 2 on bug 1175642 from James Fehlig

I'm not able to reproduce the crash. Along with my question in #1, does the
crash happen if simply starting libvirtd, then stopping it? Or do you need to
run a guest, perhaps one that uses nwfilter rules?

If we are encountering a double free, valgrind may help find it. Can you run
libvirtd under valgrind and attach the outputs when reproducing the crash? E.g.
something like

valgrind --trace-children=yes --log-file="/tmp/libvirt-%p-log.out"
--leak-check=full /usr/sbin/libvirtd