reproduce (this is a W=1 build):
        # https://github.com/goldwynr/linux/commit/130adc41eba33396b72c405d403e80da56be7b24
        git remote add goldwynr https://github.com/goldwynr/linux
        git fetch --no-tags goldwynr buffered.46
        git checkout 130adc41eba33396b72c405d403e80da56be7b24
        # 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