reproduce (this is a W=1 build):
        git checkout 63804fed149a6750ffd28610c5c1c98cce6bd377
        b4 shazam https://lore.kernel.org/r/20260126111939.1332983-2-mpenttil@redhat.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 mm/