reproduce (this is a W=1 build):
        # https://github.com/kkdwivedi/linux/commit/7f0cc0308b8d63b2da18c50836efb14fafd63c57
        git remote add kkdwivedi https://github.com/kkdwivedi/linux
        git fetch --no-tags kkdwivedi res-lock-base
        git checkout 7f0cc0308b8d63b2da18c50836efb14fafd63c57
        # 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