tree: https://git.kernel.org/pub/scm/linux/kernel/git/kabel/linux.git phy-supported-interfaces head: 2558f24b676985f6f62903284d6cb28b0618cd76 commit: 61a6d960b538322c4076c818bc6719d9f9418fa9 [20/22] net: phy: marvell10g: fill in supported_interfaces member config: arm64-defconfig (attached as .config) compiler: aarch64-linux-gcc (GCC) 9.3.0 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 # https://git.kernel.org/pub/scm/linux/kernel/git/kabel/linux.git/commit/?i... git remote add kabel https://git.kernel.org/pub/scm/linux/kernel/git/kabel/linux.git git fetch --no-tags kabel phy-supported-interfaces git checkout 61a6d960b538322c4076c818bc6719d9f9418fa9 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arm64 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 >>, old ones prefixed by <<): --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org