reproduce (this is a W=1 build):
        git clone https://github.com/intel/lkp-tests.git ~/lkp-tests
        # https://github.com/norov/linux/commit/0beaccbbf4cc7a3ecbb1ee89ac6428265f123b20
        git remote add norov https://github.com/norov/linux
        git fetch --no-tags norov smp3
        git checkout 0beaccbbf4cc7a3ecbb1ee89ac6428265f123b20
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-15.1.0 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=m68k olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-15.1.0 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=m68k SHELL=/bin/bash fs/