reproduce (this is a W=1 build):
        git clone https://github.com/intel/lkp-tests.git ~/lkp-tests
        # https://github.com/brauner/linux/commit/dabae7218d1c5a658029cb9fb7c099bd39b2e48c
        git remote add brauner-github https://github.com/brauner/linux.git
        git fetch --no-tags brauner-github vfs.fixes
        git checkout dabae7218d1c5a658029cb9fb7c099bd39b2e48c
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-13.3.0 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=alpha olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-13.3.0 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=alpha SHELL=/bin/bash fs/afs/