reproduce (this is a W=1 build):
        git checkout 2e72b1e0aac24a12f3bf3eec620efaca7ab7d4de
        b4 shazam https://lore.kernel.org/r/20250319001521.53249-5-jdamato@fastly.com
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make W=1 O=build_dir ARCH=um olddefconfig
        make W=1 O=build_dir ARCH=um SHELL=/bin/bash