Hi Frank, FYI, the error/warning still remains. tree: https://github.com/frank-w/BPI-R2-4.14 5.15-rtl8367dsa head: 28f07f3c9803750f442f4d4d16508e9ba873f4ac commit: 66b4718b5238ffbbea2a2562ab906dc676957a4f [32/62] rtl8367: add driver from openwrt config: i386-buildonly-randconfig-r004-20211107 (https://download.01.org/0day-ci/archive/20220110/202201101759.hJaYWnCk-lk...) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project cefc01fa65a7ebcc10cbf3c3bb2278a6a122deaf) 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://github.com/frank-w/BPI-R2-4.14/commit/66b4718b5238ffbbea2a2562ab9... git remote add frank-w-bpi-r2-4.14 https://github.com/frank-w/BPI-R2-4.14 git fetch --no-tags frank-w-bpi-r2-4.14 5.15-rtl8367dsa git checkout 66b4718b5238ffbbea2a2562ab906dc676957a4f # 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=i386 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 >>): In file included from <built-in>:1: #include <netlink/netlink.h> ^~~~~~~~~~~~~~~~~~~ 1 error generated. --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org