reproduce (this is a W=1 build):
        git clone https://github.com/intel/lkp-tests.git ~/lkp-tests
        # https://github.com/bytedance/kernel/commit/88bb8f5cf88161aabcb97ddd06b1a1c50a9a9768
        git remote add bytedance https://github.com/bytedance/kernel.git
        git fetch --no-tags bytedance 6.6-velinux
        git checkout 88bb8f5cf88161aabcb97ddd06b1a1c50a9a9768
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-14.2.0 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=loongarch olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-14.2.0 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=loongarch SHELL=/bin/bash