I'll build a kernel locally. What should I test? The patch mentioned above against 5.18.0, the debug patch from Hannes or both? Regarding stack overflow or such: This is an 8GB raspberry pi4 and it is only crashing when running a huge VM (7.5GB) as OBS build job, building a package (kodi) which actually uses all this memory. It's always this one build job crashing the machine, relatively reliably. I have seen my other 8GB raspi4 which is running 2 "smaller" (3.7G) build jobs at once crash at least once with a similar log message, but after enabling kdump it has not happened again.