reproduce (this is a W=1 build):
        git clone https://github.com/intel/lkp-tests.git ~/lkp-tests
        git checkout 64f7b77f0bd9271861ed9e410e9856b6b0b21c48
        b4 shazam https://lore.kernel.org/r/20241111-v5_user_cfi_series-v8-24-dce14aa30207@rivosinc.com
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=riscv olddefconfig
        ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=riscv prepare