reproduce (this is a W=1 build):
        # https://github.com/jimc/linux/commit/409d5f2c32913392326ac7923364665eca17c1bb
        git remote add jimc https://github.com/jimc/linux.git
        git fetch --no-tags jimc dd-drm-fix
        git checkout 409d5f2c32913392326ac7923364665eca17c1bb

        git clone https://github.com/intel/lkp-tests.git ~/lkp-tests

        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-15.2.0 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=m68k olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-15.2.0 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=m68k SHELL=/bin/bash