reproduce (this is a W=1 build):
        git clone https://github.com/intel/lkp-tests.git ~/lkp-tests
        # https://git.kernel.org/pub/scm/linux/kernel/git/horms/ipvs-next.git/commit/?id=4654467dc7e111e84f43ed1b70322873ae77e7be
        git remote add horms-ipvs-next https://git.kernel.org/pub/scm/linux/kernel/git/horms/ipvs-next.git
        git fetch --no-tags horms-ipvs-next main
        git checkout 4654467dc7e111e84f43ed1b70322873ae77e7be
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang-17 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=x86_64 olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang-17 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash