>> To be sure we are not in front of a long lasting bug, could you try >> CONFIG_KASAN=y on v5.9 ? > > Indeed it started to fail somewhere between v5.6 and v5.7. > > v5.7 fails early with few messages on the console with reboot, v5.8 and > later hang right at bootloader. > > I'm bisecting now.
(side note: I tried FB_OF=y instead of DRM_RADEON + DRM_FBDEV_* to speed up bisection and it turns out in that configuration KASAN never worked, down to commit 305d600123046, hanging right after bootloader or even with invalid access in the bootloader itself).
