reproduce (this is a W=1 build):
        # https://github.com/goldwynr/linux/commit/e6b9791039c5d27a523c8e22f54cf744ce184301
        git remote add goldwynr https://github.com/goldwynr/linux
        git fetch --no-tags goldwynr buffered.46
        git checkout e6b9791039c5d27a523c8e22f54cf744ce184301
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make W=1 O=build_dir ARCH=i386 olddefconfig
        make W=1 O=build_dir ARCH=i386 SHELL=/bin/bash