reproduce (this is a W=1 build):
        git checkout be8b93b5cc7d533eb8c9b0590cdac055ecafe13a
        b4 shazam https://lore.kernel.org/r/14c27df7-12a3-e432-a741-17672185c092@foxvalley.net
        # 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