tree: https://gitlab.freedesktop.org/agd5f/linux.git drm-next head: ebeff894af6654fef910e5b6da4f515aa7c73583 commit: de4b7cd8cb87c12559e0545d9c9c631cb2e8ee6f [17/61] drm/amd/pm/swsmu: unify the init soft gpu metrics function config: riscv-randconfig-r012-20210209 (attached as .config) compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project c9439ca36342fb6013187d0a69aef92736951476) 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 riscv cross compiling tool for clang build # apt-get install binutils-riscv64-linux-gnu git remote add agd5f https://gitlab.freedesktop.org/agd5f/linux.git git fetch --no-tags agd5f drm-next git checkout de4b7cd8cb87c12559e0545d9c9c631cb2e8ee6f # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=riscv 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 >>): default: ^~~~~~~ drivers/gpu/drm/amd/amdgpu/../pm/swsmu/smu_cmn.c:770:23: note: uninitialized use occurs here memset(header, 0xFF, structure_size); ^~~~~~~~~~~~~~ drivers/gpu/drm/amd/amdgpu/../pm/swsmu/smu_cmn.c:753:25: note: initialize the variable 'structure_size' to silence this warning uint16_t structure_size; ^ = 0 1 warning generated. vim +/structure_size +764 drivers/gpu/drm/amd/amdgpu/../pm/swsmu/smu_cmn.c 756 757 switch (METRICS_VERSION(frev, crev)) { 758 case METRICS_VERSION(1, 0): 759 structure_size = sizeof(struct gpu_metrics_v1_0); 760 break; 761 case METRICS_VERSION(2, 0): 762 structure_size = sizeof(struct gpu_metrics_v2_0); 763 break; 765 break; 766 } 767 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org