reproduce (this is a W=1 build):
        # https://github.com/kkdwivedi/linux/commit/15ae81f222268f3e796b1a2ab478fa12eda2354d
        git remote add kkdwivedi https://github.com/kkdwivedi/linux
        git fetch --no-tags kkdwivedi arena-args
        git checkout 15ae81f222268f3e796b1a2ab478fa12eda2354d

        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make W=1 O=build_dir ARCH=x86_64 olddefconfig
        make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash