[popcornmix]

Looks like I spoke too soon. It did not survive a 2nd, 3rd, 4th reboot. Hung each time just displaying the build number.
Disabling overclock booted/rebooted consistently.

But no panic now?
Does reducing the overclock a little avoid the hang?
Does reverting the firmware back produce the panic again?

Note: there is a bug in last night's build that can crash Kodi when displaying the splash screen.
I'm not sure if you can be hitting that (I saw it restart kodi a few times before setting, but possibly there are other ways it can fail).
Perhaps revert to preiovious build and then update firmware.