Hello I filled this bug in https://github.com/pftf/RPi4/issues/267
They replied me and pointed me to install UEFI v1.38. I have rebooted the system twice with v1.38 with no panics. Now it has been running a "cvs update -P" during half an hour and no panics at all. I will let the system running for hours or days with v1.38 doing intense work to fully confirm it.
For now: v1.37 runs ok v1.38 runs ok v1.39 runs BAD Regards. Ramiro.
