tree: https://github.com/zen-kernel/zen-kernel 5.9/clearlinux head: 2a08e6bb06ef6a673a88475b7697cba9d8a39c9d commit: 23c73dec0e7b76f8ff212d93e6b0698b3de678b9 [9/26] raid6: add Kconfig option to skip raid6 benchmarking config: arm64-allyesconfig (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://github.com/zen-kernel/zen-kernel/commit/23c73dec0e7b76f8ff212d93e... git remote add zen-kernel-zen-kernel https://github.com/zen-kernel/zen-kernel git fetch --no-tags zen-kernel-zen-kernel 5.9/clearlinux git checkout 23c73dec0e7b76f8ff212d93e6b0698b3de678b9 # 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 >>): lib/raid6/algos.c: In function 'raid6_select_algo': 138 | # error "TODO" | ^~~~~ lib/raid6/algos.c:130:28: warning: unused variable 'gen_fallback' [-Wunused-variable] 130 | const struct raid6_calls *gen_fallback; | ^~~~~~~~~~~~ vim +/TODO +138 lib/raid6/algos.c 123 124 #ifdef CONFIG_RAID6_FORCE_ALGO 125 /* TODO don't compile in algos that will never be used */ 126 int __init raid6_select_algo(void) 127 { 128 const struct raid6_recov_calls *recov_fallback = &raid6_recov_intx1; 129 const struct raid6_recov_calls *recov_algo; 130 const struct raid6_calls *gen_fallback; 131 const struct raid6_calls *gen_algo; 132 133 #if defined(__i386__) 134 gen_fallback = &raid6_intx32; 135 #elif defined(__x86_64__) 136 gen_fallback = &raid6_sse2x2; 137 #else 139 #endif 140 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org