reproduce (this is a W=1 build):
        git checkout c86e269c4da6dca2beaf99bdc6fd9f0a9f69035f
        b4 shazam https://lore.kernel.org/r/20250225222500.23535-8-kuurtb@gmail.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