reproduce (this is a W=1 build):
        git checkout fd93b3350b4314eebd8fbf0fea3ca7fe48d777e3
        b4 shazam https://lore.kernel.org/r/20250509115126.63190-20-byungchul@sk.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 drivers/net/netdevsim/