reproduce (this is a W=1 build):
        # https://github.com/thierryreding/linux/commit/531ec318e70783dd2865c62ad274ed77b88c2dea
        git remote add thierryreding https://github.com/thierryreding/linux
        git fetch --no-tags thierryreding for-gvs
        git checkout 531ec318e70783dd2865c62ad274ed77b88c2dea

        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=$HOME/0day COMPILER=clang-20 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=x86_64 olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang-20 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash