tree: https://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux.git crypto-pending head: 67824d3cb5325de4264ad344174a7e4ea69e5303 commit: 67824d3cb5325de4264ad344174a7e4ea69e5303 [7/7] crypto: arm64/polyval: Add PMULL accelerated implementation of POLYVAL config: arm64-randconfig-r033-20220216 (https://download.01.org/0day-ci/archive/20220216/202202161205.0mACsVya-lk...) compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 0e628a783b935c70c80815db6c061ec84f884af5) 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/ebiggers/linux.git/commit... git remote add ebiggers https://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux.git git fetch --no-tags ebiggers crypto-pending git checkout 67824d3cb5325de4264ad344174a7e4ea69e5303 # 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 arch/arm64/crypto/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): static const struct cpu_feature polyval_cpu_feature[] = { ^ 1 warning generated. vim +/polyval_cpu_feature +355 arch/arm64/crypto/polyval-ce-glue.c 354 356 { cpu_feature(PMULL) }, { } 357 }; 358 MODULE_DEVICE_TABLE(cpu, polyval_cpu_feature); 359 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org