reproduce (this is a W=1 build):
        # https://github.com/zen-kernel/zen-kernel/commit/332c0f76c995d92d920da1a7ba19825db065a713
        git remote add zen https://github.com/zen-kernel/zen-kernel
        git fetch --no-tags zen 6.17/zen-sauce
        git checkout 332c0f76c995d92d920da1a7ba19825db065a713
        # install loongarch cross compiling tool for clang build
        # apt-get install binutils-loongarch-linux-gnu
        # clang-22 might not be officially released. Try a lower version if installation fails.
        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=$HOME/0day COMPILER=clang-22 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=loongarch olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang-22 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=loongarch SHELL=/bin/bash drivers/scsi/