reproduce (this is a W=1 build):
        git remote add driver-core https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core.git
        git fetch driver-core driver-core-testing
        git checkout driver-core/driver-core-testing
        b4 shazam https://lore.kernel.org/r/20240119033227.14113-1-shijie@os.amperecomputing.com
        # 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