Kernel panic on 1.5.4

Keep having soft cpu lock messages when I remote viewing the vm on my kvm for some weeks. Then the Vm completely freezes.

Nothing’s changed. Still same hardware, the VL has 4G to run with, plenty of cores and is running from a raid array. It’s a kvm setup under Ubuntu 18.04.

I’ve made a github issue but no response yet.
Has anyone have any leads ?