4.14: Regression on ppc32 (early crash)

Hello,

on both my ppc32 systems I've tested (G4 PowerMac and G4 Mac-mini), I see a regression after upgrading from 4.14.74 to 4.14.76: Very soon after starting the kernel from yaboot, they drop me into a OF prompt, message is "invalid memory access at" on the mini, and another one I forgot on the PowerMac. FWIW, the ppc64 G5 PowerMac does fine.

Before I start bisecting - might take a few days -, is this already on radar?

Christoph