I don't have any kernel panics that I can share, but my machine with a ZFS volume was the only machine that had troubles installing BigSur 11.1
It got into an endless reboot loop during install until I unplugged my ZFS volume.
The first time through a working boot it still wasn't stable, after doing a startup disk repair in the repair boot, I rebooted and the system appears (fingers crossed) to be stable. I was then able to mount my ZFS volume.