tree: git://people.freedesktop.org/~thomash/linux topic/ttm_branch_v3 head: ed0bde777934916c30fbecb2b351f549eb3a0d0f commit: 5cf45c08b6b528f8a76679408deb4ce96dc44d88 [7/14] drm/i915/ttm Add a generic TTM memcpy move for page-based iomem config: x86_64-randconfig-a003-20210519 (attached as .config) compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project 8e93d10633d751a3e9169bf9fa68326925ffa097) 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 thomash git://people.freedesktop.org/~thomash/linux git fetch --no-tags thomash topic/ttm_branch_v3 git checkout 5cf45c08b6b528f8a76679408deb4ce96dc44d88 # 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 warnings (new ones prefixed by >>): vim +190 drivers/gpu/drm/i915/gem/i915_gem_ttm_bo_util.c 179 180 /** 181 * ttm_kmap_iter_tt_init - Initialize a struct i915_ttm_kmap_iter_tt 182 * @iter_tt: The struct i915_ttm_kmap_iter_tt to initialize. 183 * @tt: Struct ttm_tt holding page pointers of the struct ttm_resource. 184 * 185 * Return: Pointer to the embedded struct i915_ttm_kmap_iter. 186 */ 187 struct i915_ttm_kmap_iter * 188 i915_ttm_kmap_iter_tt_init(struct i915_ttm_kmap_iter_tt *iter_tt, 189 struct ttm_tt *tt) --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org