tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   e644645abf4788e919beeb97925fb6bf43e890a2
commit: b24ee6c64ca785739b3ef8d95fd6becaad1bde39 NFS: allow deprecation of NFS UDP protocol
date:   4 months ago
config: x86_64-defconfig (attached as .config)
compiler: gcc-7 (Ubuntu 7.5.0-6ubuntu2) 7.5.0
reproduce (this is a W=1 build):
        git checkout b24ee6c64ca785739b3ef8d95fd6becaad1bde39
        # save the attached .config to linux build tree
        make ARCH=x86_64 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kbuild test robot <lkp@intel.com>

smatch warnings:
fs/nfs/fs_context.c:1219 nfs_fs_context_validate() warn: inconsistent indenting

vim +1219 fs/nfs/fs_context.c

  1154	
  1155	/*
  1156	 * Validate the preparsed information in the config.
  1157	 */
  1158	static int nfs_fs_context_validate(struct fs_context *fc)
  1159	{
  1160		struct nfs_fs_context *ctx = nfs_fc2context(fc);
  1161		struct nfs_subversion *nfs_mod;
  1162		struct sockaddr *sap = (struct sockaddr *)&ctx->nfs_server.address;
  1163		int max_namelen = PAGE_SIZE;
  1164		int max_pathlen = NFS_MAXPATHLEN;
  1165		int port = 0;
  1166		int ret;
  1167	
  1168		if (!fc->source)
  1169			goto out_no_device_name;
  1170	
  1171		/* Check for sanity first. */
  1172		if (ctx->minorversion && ctx->version != 4)
  1173			goto out_minorversion_mismatch;
  1174	
  1175		if (ctx->options & NFS_OPTION_MIGRATION &&
  1176		    (ctx->version != 4 || ctx->minorversion != 0))
  1177			goto out_migration_misuse;
  1178	
  1179		/* Verify that any proto=/mountproto= options match the address
  1180		 * families in the addr=/mountaddr= options.
  1181		 */
  1182		if (ctx->protofamily != AF_UNSPEC &&
  1183		    ctx->protofamily != ctx->nfs_server.address.sa_family)
  1184			goto out_proto_mismatch;
  1185	
  1186		if (ctx->mountfamily != AF_UNSPEC) {
  1187			if (ctx->mount_server.addrlen) {
  1188				if (ctx->mountfamily != ctx->mount_server.address.sa_family)
  1189					goto out_mountproto_mismatch;
  1190			} else {
  1191				if (ctx->mountfamily != ctx->nfs_server.address.sa_family)
  1192					goto out_mountproto_mismatch;
  1193			}
  1194		}
  1195	
  1196		if (!nfs_verify_server_address(sap))
  1197			goto out_no_address;
  1198	
  1199		if (ctx->version == 4) {
  1200			if (IS_ENABLED(CONFIG_NFS_V4)) {
  1201				if (ctx->nfs_server.protocol == XPRT_TRANSPORT_RDMA)
  1202					port = NFS_RDMA_PORT;
  1203				else
  1204					port = NFS_PORT;
  1205				max_namelen = NFS4_MAXNAMLEN;
  1206				max_pathlen = NFS4_MAXPATHLEN;
  1207				nfs_validate_transport_protocol(ctx);
  1208				if (ctx->nfs_server.protocol == XPRT_TRANSPORT_UDP)
  1209					goto out_invalid_transport_udp;
  1210				ctx->flags &= ~(NFS_MOUNT_NONLM | NFS_MOUNT_NOACL |
  1211						NFS_MOUNT_VER3 | NFS_MOUNT_LOCAL_FLOCK |
  1212						NFS_MOUNT_LOCAL_FCNTL);
  1213			} else {
  1214				goto out_v4_not_compiled;
  1215			}
  1216		} else {
  1217			nfs_set_mount_transport_protocol(ctx);
  1218	#ifdef CONFIG_NFS_DISABLE_UDP_SUPPORT
> 1219		       if (ctx->nfs_server.protocol == XPRT_TRANSPORT_UDP)
  1220			       goto out_invalid_transport_udp;
  1221	#endif
  1222			if (ctx->nfs_server.protocol == XPRT_TRANSPORT_RDMA)
  1223				port = NFS_RDMA_PORT;
  1224		}
  1225	
  1226		nfs_set_port(sap, &ctx->nfs_server.port, port);
  1227	
  1228		ret = nfs_parse_source(fc, max_namelen, max_pathlen);
  1229		if (ret < 0)
  1230			return ret;
  1231	
  1232		/* Load the NFS protocol module if we haven't done so yet */
  1233		if (!ctx->nfs_mod) {
  1234			nfs_mod = get_nfs_version(ctx->version);
  1235			if (IS_ERR(nfs_mod)) {
  1236				ret = PTR_ERR(nfs_mod);
  1237				goto out_version_unavailable;
  1238			}
  1239			ctx->nfs_mod = nfs_mod;
  1240		}
  1241		return 0;
  1242	
  1243	out_no_device_name:
  1244		return nfs_invalf(fc, "NFS: Device name not specified");
  1245	out_v4_not_compiled:
  1246		nfs_errorf(fc, "NFS: NFSv4 is not compiled into kernel");
  1247		return -EPROTONOSUPPORT;
  1248	out_invalid_transport_udp:
  1249		return nfs_invalf(fc, "NFSv4: Unsupported transport protocol udp");
  1250	out_no_address:
  1251		return nfs_invalf(fc, "NFS: mount program didn't pass remote address");
  1252	out_mountproto_mismatch:
  1253		return nfs_invalf(fc, "NFS: Mount server address does not match mountproto= option");
  1254	out_proto_mismatch:
  1255		return nfs_invalf(fc, "NFS: Server address does not match proto= option");
  1256	out_minorversion_mismatch:
  1257		return nfs_invalf(fc, "NFS: Mount option vers=%u does not support minorversion=%u",
  1258				  ctx->version, ctx->minorversion);
  1259	out_migration_misuse:
  1260		return nfs_invalf(fc, "NFS: 'Migration' not supported for this NFS version");
  1261	out_version_unavailable:
  1262		nfs_errorf(fc, "NFS: Version unavailable");
  1263		return ret;
  1264	}
  1265	

---
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