I haven't seen an error like that, and cannot reproduce it here.
Another way to test that apparmor is causing the problem would be to add
/dev/** rw,
at the bottom of the file /etc/apparmor.d/abstractions/libvirt-qemu. When you next start the vm apparmor should allow it full access to all devices.
I haven't seen an error like that, and cannot reproduce it here.
Another way to test that apparmor is causing the problem would be to add
/dev/** rw,
at the bottom of the file /etc/apparmor. d/abstractions/ libvirt- qemu. When you next start the vm apparmor should allow it full access to all devices.