reproduce (this is a W=1 build):
        # https://github.com/kkdwivedi/linux/commit/6b89b1fcfbb4a0cc3ff978fdb42667cd3163c785
        git remote add kkdwivedi https://github.com/kkdwivedi/linux
        git fetch --no-tags kkdwivedi res-lock-base
        git checkout 6b89b1fcfbb4a0cc3ff978fdb42667cd3163c785
        # 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 net/