After following Adrians advice and contacting the kernel devs I received the following response:
https://lore.kernel.org/linuxppc-dev/[email protected]/ I've not tried rebuilding yet, but maybe this is worth trying. Thanks, Dan > On 30 Sep 2023, at 01:02, DistroHopper39B Business > <[email protected]> wrote: > > I rebuilt the kernel with CONFIG_KFENCE=n and the kernel panic persists (same > error). I used the source from the linux-source-6.5 package in Debian sid.

