tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 66f4beaa6c1d28161f534471484b2daa2de1dce0 commit: 4e2e619f3c9e3c49859f085995554a53e9fc0e02 scsi: message: mptlan: Replace one-element array with flexible-array member date: 8 months ago config: riscv-randconfig-s031-20211109 (attached as .config) compiler: riscv64-linux-gcc (GCC) 11.2.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # apt-get install sparse # sparse version: v0.6.4-dirty # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit... git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout 4e2e619f3c9e3c49859f085995554a53e9fc0e02 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=riscv If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; sparse warnings: (new ones prefixed by >>) drivers/message/fusion/mptlan.c:1172:21: sparse: sparse: cast to restricted __le16 drivers/message/fusion/mptlan.c:1234:52: sparse: expected unsigned int [usertype] TransactionContext drivers/message/fusion/mptlan.c:1234:52: sparse: got restricted __le32 [usertype] drivers/message/fusion/mptlan.c:1238:46: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned int [usertype] FlagsLength @@ got restricted __le32 [usertype] @@ drivers/message/fusion/mptlan.c:1238:46: sparse: expected unsigned int [usertype] FlagsLength drivers/message/fusion/mptlan.c:1238:46: sparse: got restricted __le32 [usertype] drivers/message/fusion/mptlan.c:1242:46: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned int [usertype] Low @@ got restricted __le32 [usertype] @@ drivers/message/fusion/mptlan.c:1242:46: sparse: expected unsigned int [usertype] Low drivers/message/fusion/mptlan.c:1242:46: sparse: got restricted __le32 [usertype] drivers/message/fusion/mptlan.c:1244:55: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned int [usertype] High @@ got restricted __le32 [usertype] @@ drivers/message/fusion/mptlan.c:1244:55: sparse: expected unsigned int [usertype] High drivers/message/fusion/mptlan.c:1244:55: sparse: got restricted __le32 [usertype] drivers/message/fusion/mptlan.c:1258:38: sparse: sparse: invalid assignment: |= drivers/message/fusion/mptlan.c:1258:38: sparse: left side has type unsigned int drivers/message/fusion/mptlan.c:1258:38: sparse: right side has type restricted __le32 drivers/message/fusion/mptlan.c:1260:39: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned int [usertype] BucketCount @@ got restricted __le32 [usertype] @@ drivers/message/fusion/mptlan.c:1260:39: sparse: expected unsigned int [usertype] BucketCount drivers/message/fusion/mptlan.c:1260:39: sparse: got restricted __le32 [usertype] drivers/message/fusion/mptlan.c:964:25: sparse: sparse: cast to restricted __le32 drivers/message/fusion/mptlan.c:969:9: sparse: sparse: cast to restricted __le16 drivers/message/fusion/mptlan.c:972:14: sparse: sparse: cast to restricted __le16 drivers/message/fusion/mptlan.c:976:15: sparse: sparse: cast to restricted __le32 drivers/message/fusion/mptlan.c:982:53: sparse: sparse: cast to restricted __le16 drivers/message/fusion/mptlan.c:986:18: sparse: sparse: cast to restricted __le32 drivers/message/fusion/mptlan.c:990:18: sparse: sparse: cast to restricted __le32 drivers/message/fusion/mptlan.c:1020:31: sparse: sparse: cast to restricted __le32 drivers/message/fusion/mptlan.c:612:9: sparse: sparse: cast to restricted __le16 drivers/message/fusion/mptlan.c:617:17: sparse: sparse: cast to restricted __le16 drivers/message/fusion/mptlan.c:641:23: sparse: sparse: cast to restricted __le32 drivers/message/fusion/mptlan.c:346:17: sparse: sparse: cast to restricted __le32 drivers/message/fusion/mptlan.c:1492:27: sparse: sparse: restricted __be16 degrades to integer drivers/message/fusion/mptlan.c:1529:29: sparse: sparse: incorrect type in return expression (different base types) @@ expected unsigned short @@ got restricted __be16 [usertype] ethertype @@ drivers/message/fusion/mptlan.c:1529:29: sparse: expected unsigned short drivers/message/fusion/mptlan.c:1529:29: sparse: got restricted __be16 [usertype] ethertype drivers/message/fusion/mptlan.c:1532:16: sparse: sparse: incorrect type in return expression (different base types) @@ expected unsigned short @@ got restricted __be16 [usertype] @@ drivers/message/fusion/mptlan.c:1532:16: sparse: expected unsigned short drivers/message/fusion/mptlan.c:1532:16: sparse: got restricted __be16 [usertype] drivers/message/fusion/mptlan.c:745:36: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned int [usertype] TransactionContext @@ got restricted __le32 [usertype] @@ drivers/message/fusion/mptlan.c:745:36: sparse: expected unsigned int [usertype] TransactionContext drivers/message/fusion/mptlan.c:745:36: sparse: got restricted __le32 [usertype] drivers/message/fusion/mptlan.c:753:39: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned int @@ got restricted __le32 [usertype] @@ drivers/message/fusion/mptlan.c:753:39: sparse: expected unsigned int drivers/message/fusion/mptlan.c:753:39: sparse: got restricted __le32 [usertype] drivers/message/fusion/mptlan.c:756:39: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned int @@ got restricted __le32 [usertype] @@ drivers/message/fusion/mptlan.c:756:39: sparse: expected unsigned int drivers/message/fusion/mptlan.c:756:39: sparse: got restricted __le32 [usertype] drivers/message/fusion/mptlan.c:766:30: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned int [usertype] FlagsLength @@ got restricted __le32 [usertype] @@ drivers/message/fusion/mptlan.c:766:30: sparse: expected unsigned int [usertype] FlagsLength drivers/message/fusion/mptlan.c:766:30: sparse: got restricted __le32 [usertype] drivers/message/fusion/mptlan.c:775:30: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned int [usertype] Low @@ got restricted __le32 [usertype] @@ drivers/message/fusion/mptlan.c:775:30: sparse: expected unsigned int [usertype] Low drivers/message/fusion/mptlan.c:775:30: sparse: got restricted __le32 [usertype] drivers/message/fusion/mptlan.c:777:39: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned int [usertype] High @@ got restricted __le32 [usertype] @@ drivers/message/fusion/mptlan.c:777:39: sparse: expected unsigned int [usertype] High drivers/message/fusion/mptlan.c:777:39: sparse: got restricted __le32 [usertype] drivers/message/fusion/mptlan.c:784:9: sparse: sparse: cast to restricted __le32 drivers/message/fusion/mptlan.c:819:23: sparse: sparse: incorrect type in assignment (different base types) @@ expected restricted __be16 [usertype] protocol @@ got unsigned short @@ drivers/message/fusion/mptlan.c:819:23: sparse: expected restricted __be16 [usertype] protocol drivers/message/fusion/mptlan.c:819:23: sparse: got unsigned short drivers/message/fusion/mptlan.c:919:23: sparse: sparse: cast to restricted __le32 vim +1234 drivers/message/fusion/mptlan.c 1134 1135 static void 1136 mpt_lan_post_receive_buckets(struct mpt_lan_priv *priv) 1137 { 1138 struct net_device *dev = priv->dev; 1139 MPT_ADAPTER *mpt_dev = priv->mpt_dev; 1140 MPT_FRAME_HDR *mf; 1141 LANReceivePostRequest_t *pRecvReq; 1142 SGETransaction32_t *pTrans; 1143 SGESimple64_t *pSimple; 1144 struct sk_buff *skb; 1145 dma_addr_t dma; 1146 u32 curr, buckets, count, max; 1147 u32 len = (dev->mtu + dev->hard_header_len + 4); 1148 unsigned long flags; 1149 int i; 1150 1151 curr = atomic_read(&priv->buckets_out); 1152 buckets = (priv->max_buckets_out - curr); 1153 1154 dioprintk((KERN_INFO MYNAM ": %s/%s: @%s, Start_buckets = %u, buckets_out = %u\n", 1155 IOC_AND_NETDEV_NAMES_s_s(dev), 1156 __func__, buckets, curr)); 1157 1158 max = (mpt_dev->req_sz - MPT_LAN_RECEIVE_POST_REQUEST_SIZE) / 1159 (sizeof(SGETransaction32_t) + sizeof(SGESimple64_t)); 1160 1161 while (buckets) { 1162 mf = mpt_get_msg_frame(LanCtx, mpt_dev); 1163 if (mf == NULL) { 1164 printk (KERN_ERR "%s: Unable to alloc request frame\n", 1165 __func__); 1166 dioprintk((KERN_ERR "%s: %u buckets remaining\n", 1167 __func__, buckets)); 1168 goto out; 1169 } 1170 pRecvReq = (LANReceivePostRequest_t *) mf; 1171 1172 i = le16_to_cpu(mf->u.frame.hwhdr.msgctxu.fld.req_idx); 1173 mpt_dev->RequestNB[i] = 0; 1174 count = buckets; 1175 if (count > max) 1176 count = max; 1177 1178 pRecvReq->Function = MPI_FUNCTION_LAN_RECEIVE; 1179 pRecvReq->ChainOffset = 0; 1180 pRecvReq->MsgFlags = 0; 1181 pRecvReq->PortNumber = priv->pnum; 1182 1183 pTrans = (SGETransaction32_t *) pRecvReq->SG_List; 1184 pSimple = NULL; 1185 1186 for (i = 0; i < count; i++) { 1187 int ctx; 1188 1189 spin_lock_irqsave(&priv->rxfidx_lock, flags); 1190 if (priv->mpt_rxfidx_tail < 0) { 1191 printk (KERN_ERR "%s: Can't alloc context\n", 1192 __func__); 1193 spin_unlock_irqrestore(&priv->rxfidx_lock, 1194 flags); 1195 break; 1196 } 1197 1198 ctx = priv->mpt_rxfidx[priv->mpt_rxfidx_tail--]; 1199 1200 skb = priv->RcvCtl[ctx].skb; 1201 if (skb && (priv->RcvCtl[ctx].len != len)) { 1202 pci_unmap_single(mpt_dev->pcidev, 1203 priv->RcvCtl[ctx].dma, 1204 priv->RcvCtl[ctx].len, 1205 PCI_DMA_FROMDEVICE); 1206 dev_kfree_skb(priv->RcvCtl[ctx].skb); 1207 skb = priv->RcvCtl[ctx].skb = NULL; 1208 } 1209 1210 if (skb == NULL) { 1211 skb = dev_alloc_skb(len); 1212 if (skb == NULL) { 1213 printk (KERN_WARNING 1214 MYNAM "/%s: Can't alloc skb\n", 1215 __func__); 1216 priv->mpt_rxfidx[++priv->mpt_rxfidx_tail] = ctx; 1217 spin_unlock_irqrestore(&priv->rxfidx_lock, flags); 1218 break; 1219 } 1220 1221 dma = pci_map_single(mpt_dev->pcidev, skb->data, 1222 len, PCI_DMA_FROMDEVICE); 1223 1224 priv->RcvCtl[ctx].skb = skb; 1225 priv->RcvCtl[ctx].dma = dma; 1226 priv->RcvCtl[ctx].len = len; 1227 } 1228 1229 spin_unlock_irqrestore(&priv->rxfidx_lock, flags); 1230 1231 pTrans->ContextSize = sizeof(u32); 1232 pTrans->DetailsLength = 0; 1233 pTrans->Flags = 0; 1235 1236 pSimple = (SGESimple64_t *) pTrans->TransactionDetails; 1237 1238 pSimple->FlagsLength = cpu_to_le32( 1239 ((MPI_SGE_FLAGS_END_OF_BUFFER | 1240 MPI_SGE_FLAGS_SIMPLE_ELEMENT | 1241 MPI_SGE_FLAGS_64_BIT_ADDRESSING) << MPI_SGE_FLAGS_SHIFT) | len); 1242 pSimple->Address.Low = cpu_to_le32((u32) priv->RcvCtl[ctx].dma); 1243 if (sizeof(dma_addr_t) > sizeof(u32)) 1244 pSimple->Address.High = cpu_to_le32((u32) ((u64) priv->RcvCtl[ctx].dma >> 32)); 1245 else 1246 pSimple->Address.High = 0; 1247 1248 pTrans = (SGETransaction32_t *) (pSimple + 1); 1249 } 1250 1251 if (pSimple == NULL) { 1252 /**/ printk (KERN_WARNING MYNAM "/%s: No buckets posted\n", 1253 /**/ __func__); 1254 mpt_free_msg_frame(mpt_dev, mf); 1255 goto out; 1256 } 1257 1258 pSimple->FlagsLength |= cpu_to_le32(MPI_SGE_FLAGS_END_OF_LIST << MPI_SGE_FLAGS_SHIFT); 1259 1260 pRecvReq->BucketCount = cpu_to_le32(i); 1261 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org