[kbuild-all] [linux-next:master 2750/4901] ld.lld: error: undefined symbol: ptp_clock_index

tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: 395a61741f7ea29e1f4a0d6e160197fe8e377572 commit: 966f2e1a4a340ef17fef4e35ddbff3f2043ce8d7 [2750/4901] net: lan966x: Implement get_ts_info config: arm64-buildonly-randconfig-r005-20220209 (https://download.01.org/0day-ci/archive/20220210/202202101833.UDN2d73E-lk...) compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project e8bff9ae54a55b4dbfeb6ba55f723abbd81bf494) reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # install arm64 cross compiling tool for clang build # apt-get install binutils-aarch64-linux-gnu # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commi... git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git git fetch --no-tags linux-next master git checkout 966f2e1a4a340ef17fef4e35ddbff3f2043ce8d7 # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm64 SHELL=/bin/bash If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org