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apparmor DENIED on domain shutdown

Hi. I upgraded one of my servers to Ubuntu 20.04. Since then domains
won't shutdown. They are in the "in shutdown" state.

I googled around and I found it is probably because of apparmor.

I see this message in the logs:

kernel: [740222.848210] audit: type=1400 audit(1606983397.013:338): apparmor="DENIED" operation="signal" profile="libvirt-a2c1456f-3371-49eb-9fa4-f8576ca4e878" pid=2375 comm="libvirtd" requested_mask="receive" denied_mask="receive" signal=term peer="libvirtd"

I tried to run this but it does nothing:

   aa-complain /usr/sbin/libvirtd

The only solution I found was to run aa-disable to the machine id
so it can be shut down.

I found some similar issues but I can't figure out what I have to tweak
in the apparmor files. If you can point me to some doc may be I skipped
I will or any solution I would appreciate it.

This is
 - Ubuntu 20.04
 - libvirt 6.0.0-0
 - qemu-kvm 1:4.2-3

Thank you very much.

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