reproduce (this is a W=1 build):
        git clone https://github.com/intel/lkp-tests.git ~/lkp-tests
        git remote add lwn git://git.lwn.net/linux.git
        git fetch lwn docs-next
        git checkout lwn/docs-next
        b4 shazam https://lore.kernel.org/r/4ad5eb8d4b819997c1615d2401581c22a32bb2c1.1744789777.git.mchehab+huawei@kernel.org
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-13.3.0 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=csky olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-13.3.0 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=csky prepare