Comment # 4 on bug 1125841 from Martin Kalivoda

It should be noted, that this is quite worrying me for another reason:
comments in /etc/libvirt/qemu.conf say that
# SUSE Note:
# Currently, Apparmor is the default security framework in SUSE
# distros.  If Apparmor is enabled on the host, libvirtd is
# generously confined but users must opt-in to confine qemu
# instances.  Change this to a non-zero value to enable default
# Apparmor confinement of qemu instances.
However, changing the value of security_default_confined to 1 will NOT trigger
the error and it will leave everything unconfined. Only reason why I got hit by
this is because I am cautious about default and changed the security_driver
explicitly.