reproduce (this is a W=1 build):
        git remote add xfs-linux https://git.kernel.org/pub/scm/fs/xfs/xfs-linux.git
        git fetch xfs-linux for-next
        git checkout xfs-linux/for-next
        b4 shazam https://lore.kernel.org/r/20251114152147.66688-1-haoqinhuang7@gmail.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=$HOME/0day COMPILER=clang-20 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=x86_64 olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang-20 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash fs/xfs/