reproduce (this is a W=1 build):
        git remote add linuxtv-media-pending https://git.linuxtv.org/media-ci/media-pending.git
        git fetch linuxtv-media-pending master
        git checkout linuxtv-media-pending/master
        b4 shazam https://lore.kernel.org/r/20260323083031.30941-1-pengpeng@iscas.ac.cn

        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 drivers/media/v4l2-core/