FreeBSD 13.1 Kernel panic in VM

[tomp (Thomas Parrott)]

Here’s the tutorial

Run FreeBSD 13.1 / OPNsense 22.7 / pfSense 2.7.0 (and newer?) under LXD VM

Premise: Currently, starting with FreeBSD 13.1, the kernel throws a panic at boot with the default settings under LXD. This also prevents distributions using recent FreeBSD kernels from booting as well, including OPNsense 22.7 and pfSense 2.7.0. The issue appears to stem from the fact that by default, LXD tells QEMU to passthrough all supported Hyper-V enlightenments to the virtual-machines and that, presumably, causes FreeBSD’s kernel to interpret the CPU wrong. Solution: You can prevent LX…