reproduce (this is a W=1 build):
        git checkout 0636e6205beed850d985276dc56fd73d785bea5c
        b4 shazam https://lore.kernel.org/r/67b7aa0157b9cf5de111ab6b2725d207ec98aae9.1770572936.git.u.kleine-koenig@baylibre.com

        git clone https://github.com/intel/lkp-tests.git ~/lkp-tests

        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-15.2.0 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=csky olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-15.2.0 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=csky SHELL=/bin/bash