reproduce (this is a W=1 build):
        # https://git.kernel.org/pub/scm/linux/kernel/git/kpsingh/linux.git/commit/?id=dafa5a9ade0b77e70e942cb20ac68c41da19916b
        git remote add kpsingh https://git.kernel.org/pub/scm/linux/kernel/git/kpsingh/linux.git
        git fetch --no-tags kpsingh static_calls_type_1
        git checkout dafa5a9ade0b77e70e942cb20ac68c41da19916b
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make W=1 O=build_dir ARCH=i386 olddefconfig
        make W=1 O=build_dir ARCH=i386 SHELL=/bin/bash fs/bcachefs/ security/