tree: https://chromium.googlesource.com/chromiumos/third_party/kernel chromeos-5.4 head: 62f6761889a59411f5673ba61d7ae465372ca9c6 commit: bc0b0ae994e6bb17b12bfd882c2eb837eb29c078 [56/237] CHROMIUM: media: mtk-vcodec: Add vp9 slice api driver for mt8192 config: arm-randconfig-r024-20210416 (attached as .config) compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project 6a18cc23efad410db48a3ccfc233d215de7d4cb9) 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 arm cross compiling tool for clang build # apt-get install binutils-arm-linux-gnueabi git remote add chrome-os https://chromium.googlesource.com/chromiumos/third_party/kernel git fetch --no-tags chrome-os chromeos-5.4 git checkout bc0b0ae994e6bb17b12bfd882c2eb837eb29c078 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 ARCH=arm 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 >>): bs->size, offset); ^~~~~~~~ drivers/media/platform/mtk-vcodec/vdec/../mtk_vcodec_util.h:38:60: note: expanded from macro 'mtk_vcodec_err' ((struct mtk_vcodec_ctx *)h->ctx)->id, __func__, ##args) ^~~~ include/linux/printk.h:299:33: note: expanded from macro 'pr_err' printk(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__) ~~~ ^~~~~~~~~~~ 1 warning generated. vim +1107 drivers/media/platform/mtk-vcodec/vdec/vdec_vp9_req_lat_if.c 1059 1060 /* 1061 * parse tiles according to `6.4 Decode tiles syntax` 1062 * in "vp9-bitstream-specification" 1063 * 1064 * frame contains uncompress header, compressed header and several tiles. 1065 * this function parses tiles' position and size, stores them to tile buffer 1066 * for decoding. 1067 */ 1068 static int vdec_vp9_slice_setup_tile_buffer( 1069 struct vdec_vp9_slice_instance *instance, 1070 struct vdec_vp9_slice_vsi * vsi, 1071 struct mtk_vcodec_mem *bs) 1072 { 1073 struct vdec_vp9_slice_uncompressed_header *uh; 1074 unsigned int rows_log2; 1075 unsigned int cols_log2; 1076 unsigned int rows; 1077 unsigned int cols; 1078 unsigned int mi_row; 1079 unsigned int mi_col; 1080 unsigned int offset; 1081 unsigned int pa; 1082 unsigned int size; 1083 struct vdec_vp9_slice_tiles *tiles; 1084 unsigned char *pos; 1085 unsigned char *end; 1086 unsigned char *va; 1087 unsigned int *tb; 1088 int i; 1089 int j; 1090 1091 uh = &vsi->frame.uh; 1092 rows_log2 = uh->tile_rows_log2; 1093 cols_log2 = uh->tile_cols_log2; 1094 rows = 1 << rows_log2; 1095 cols = 1 << cols_log2; 1096 1097 if (rows > 4 || cols > 64) { 1098 mtk_vcodec_err(instance, "tile_rows %u tile_cols %u\n", 1099 rows, cols); 1100 return -EINVAL; 1101 } 1102 1103 offset = uh->uncompressed_header_size + 1104 uh->header_size_in_bytes; 1105 if (bs->size <= offset) { 1106 mtk_vcodec_err(instance, "bs size %lu tile offset %u\n", 1108 return -EINVAL; 1109 } 1110 1111 tiles = &vsi->frame.tiles; 1112 /* setup tile buffer */ 1113 1114 va = (unsigned char *)bs->va; 1115 pos = va + offset; 1116 end = va + bs->size; 1117 /* truncated */ 1118 pa = (unsigned int)bs->dma_addr + offset; 1119 tb = instance->tile.va; 1120 for (i = 0; i < rows; i++) { 1121 for (j = 0; j < cols; j++) { 1122 if (i == rows - 1 && 1123 j == cols - 1) { 1124 size = (unsigned int)(end - pos); 1125 } else { 1126 if (end - pos < 4) { 1127 mtk_vcodec_err(instance, 1128 "tile %px %px\n", end, pos); 1129 return -EINVAL; 1130 } 1131 size = (pos[0] << 24) | (pos[1] << 16) | 1132 (pos[2] << 8) | pos[3]; 1133 pos += 4; 1134 pa += 4; 1135 offset += 4; 1136 if (end - pos < size) { 1137 mtk_vcodec_err(instance, 1138 "tile %px %px %u\n", 1139 end, pos, size); 1140 return -EINVAL; 1141 } 1142 } 1143 tiles->size[i][j] = size; 1144 if (tiles->mi_rows[i]) { 1145 *tb++ = (size << 3) + ((offset << 3) & 0x7f); 1146 *tb++ = pa &~0xf; 1147 *tb++ = (pa << 3) & 0x7f; 1148 mi_row = (tiles->mi_rows[i] - 1) & 0x1ff; 1149 mi_col = (tiles->mi_cols[j] - 1) & 0x3f; 1150 *tb++ = (mi_row << 6) + mi_col; 1151 } 1152 pos += size; 1153 pa += size; 1154 offset += size; 1155 } 1156 } 1157 1158 return 0; 1159 } 1160 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org