reproduce (this is a W=1 build):
        # https://github.com/jimc/linux/commit/6d0e01538bf8aa880118f706ea96e92d3df34fab
        git remote add jimc https://github.com/jimc/linux.git
        git fetch --no-tags jimc must-be-lval
        git checkout 6d0e01538bf8aa880118f706ea96e92d3df34fab

        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=$HOME/0day COMPILER=gcc-15.1.0 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=alpha olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-15.1.0 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=alpha SHELL=/bin/bash lib/