reproduce (this is a W=1 build):
        # https://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse.git/commit/?id=a6ca1a573e1fd9474c6226412fb743b4ef7e3472
        git remote add mszeredi-fuse https://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse.git
        git fetch --no-tags mszeredi-fuse for-next
        git checkout a6ca1a573e1fd9474c6226412fb743b4ef7e3472

        git clone https://github.com/intel/lkp-tests.git ~/lkp-tests
        # apt-get install llvm-dev

        # save the config file
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-14.2.0 ~/lkp-tests/kbuild/make.cross W=1 ARCH=s390 olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-14.2.0 ~/lkp-tests/kbuild/make.cross W=1 ARCH=s390 
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-14.2.0 ~/lkp-tests/kbuild/make.cross W=1 headers_install
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-14.2.0 ~/lkp-tests/kbuild/make.cross W=1 -C tools/testing/selftests