Cool. Thanks for digging, I found some of the same links while looking into this.
While I wait for the patch going into KVM, what is the different ways to prevent this? Is there anything I can do to disable SSM and/or something on host or VM? (bios/kernel/proxmox/vm-config) - except to stay on...
So from the changelog
pve-qemu-kvm (6.0.0-4) bullseye; urgency=medium
* drop the ancient workaround that force disabled SMM due to observing VM
hangs on old kernel versions.
* monitor/qmp: fix race with clients disconnecting early resulting in other
clients receiving a message...
Hi. Last night I did a dist-upgrade of the my whole home 3 node proxmox cluster. I was allready 7.0 and upgraded a few packages to their latest version
root@foxtrot:/var/log# egrep " (upgrade) " dpkg.log
2021-09-14 13:35:30 upgrade libpve-storage-perl:all 7.0-10 7.0-11