Hi Kevin, FYI, the error/warning still remains. tree: git://people.freedesktop.org/~agd5f/linux.git amd-20.45 head: a3950d94b046fb206e58fd3ec717f071c0203ba3 commit: 641803ba0aabf8d823eb6cf6667dda3fdca58872 [198/2427] drm/amdgpu: [hybrid] add semaphore object support config: x86_64-randconfig-a004-20201214 (attached as .config) compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project a29ecca7819a6ed4250d3689b12b1f664bb790d7) 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 x86_64 cross compiling tool for clang build # apt-get install binutils-x86-64-linux-gnu git remote add radeon-alex git://people.freedesktop.org/~agd5f/linux.git git fetch --no-tags radeon-alex amd-20.45 git checkout 641803ba0aabf8d823eb6cf6667dda3fdca58872 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 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: ./usr/include/drm/amdgpu_drm.h:304:2: error: unknown type name 'uint32_t' uint32_t op; ^ ./usr/include/drm/amdgpu_drm.h:305:2: error: unknown type name 'uint32_t' uint32_t handle; ^ ./usr/include/drm/amdgpu_drm.h:306:2: error: unknown type name 'uint32_t' uint32_t ctx_id; ^ ./usr/include/drm/amdgpu_drm.h:307:2: error: unknown type name 'uint32_t' uint32_t ip_type; ^ ./usr/include/drm/amdgpu_drm.h:308:2: error: unknown type name 'uint32_t' uint32_t ip_instance; ^ ./usr/include/drm/amdgpu_drm.h:309:2: error: unknown type name 'uint32_t' uint32_t ring; ^ ./usr/include/drm/amdgpu_drm.h:310:2: error: unknown type name 'uint64_t' uint64_t seq; ^ int32_t fd; ^ ./usr/include/drm/amdgpu_drm.h:315:2: error: unknown type name 'uint32_t' uint32_t handle; ^ ./usr/include/drm/amdgpu_drm.h:939:4: error: unknown type name 'uint32_t' uint32_t aperture; ^ ./usr/include/drm/amdgpu_drm.h:940:4: error: unknown type name 'uint32_t' uint32_t _pad; ^ ./usr/include/drm/amdgpu_drm.h:1167:2: error: unknown type name 'uint64_t' uint64_t start; ^ ./usr/include/drm/amdgpu_drm.h:1168:2: error: unknown type name 'uint64_t' uint64_t end; ^ 13 errors generated. --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org