tree: https://git.kernel.org/pub/scm/linux/kernel/git/leon/linux-rdma.git rdma-next head: 7f9a863f2a4067a38cc6ad330b9425b3fd2dc67b commit: a209fe95d542e8e566c74a8cbd2ec49452b9d110 [59/63] net/core: Add support for getting VF GUIDs If you fix the issue, kindly add following tag Reported-by: kbuild test robot Reported-by: Dan Carpenter smatch warnings: net/core/rtnetlink.c:1279 rtnl_fill_vfinfo() warn: check that 'node_guid' doesn't leak information (struct has a hole after 'vf') net/core/rtnetlink.c:1281 rtnl_fill_vfinfo() warn: check that 'port_guid' doesn't leak information (struct has a hole after 'vf') # https://git.kernel.org/pub/scm/linux/kernel/git/leon/linux-rdma.git/commit/?id=a209fe95d542e8e566c74a8cbd2ec49452b9d110 git remote add leon-rdma https://git.kernel.org/pub/scm/linux/kernel/git/leon/linux-rdma.git git remote update leon-rdma git checkout a209fe95d542e8e566c74a8cbd2ec49452b9d110 vim +1279 net/core/rtnetlink.c b22b941b2c253a Hannes Frederic Sowa 2015-11-17 1189 static noinline_for_stack int rtnl_fill_vfinfo(struct sk_buff *skb, b22b941b2c253a Hannes Frederic Sowa 2015-11-17 1190 struct net_device *dev, b22b941b2c253a Hannes Frederic Sowa 2015-11-17 1191 int vfs_num, b22b941b2c253a Hannes Frederic Sowa 2015-11-17 1192 struct nlattr *vfinfo) b22b941b2c253a Hannes Frederic Sowa 2015-11-17 1193 { 01a3d796813d63 Vlad Zolotarov 2015-03-30 1194 struct ifla_vf_rss_query_en vf_rss_query_en; 79aab093a0b537 Moshe Shemesh 2016-09-22 1195 struct nlattr *vf, *vfstats, *vfvlanlist; b22b941b2c253a Hannes Frederic Sowa 2015-11-17 1196 struct ifla_vf_link_state vf_linkstate; 79aab093a0b537 Moshe Shemesh 2016-09-22 1197 struct ifla_vf_vlan_info vf_vlan_info; b22b941b2c253a Hannes Frederic Sowa 2015-11-17 1198 struct ifla_vf_spoofchk vf_spoofchk; b22b941b2c253a Hannes Frederic Sowa 2015-11-17 1199 struct ifla_vf_tx_rate vf_tx_rate; 3b766cd832328f Eran Ben Elisha 2015-06-15 1200 struct ifla_vf_stats vf_stats; dd461d6aa89476 Hiroshi Shimamoto 2015-08-28 1201 struct ifla_vf_trust vf_trust; b22b941b2c253a Hannes Frederic Sowa 2015-11-17 1202 struct ifla_vf_vlan vf_vlan; b22b941b2c253a Hannes Frederic Sowa 2015-11-17 1203 struct ifla_vf_rate vf_rate; b22b941b2c253a Hannes Frederic Sowa 2015-11-17 1204 struct ifla_vf_mac vf_mac; 75345f888f700c Denis Kirjanov 2019-06-17 1205 struct ifla_vf_broadcast vf_broadcast; b22b941b2c253a Hannes Frederic Sowa 2015-11-17 1206 struct ifla_vf_info ivi; a209fe95d542e8 Danit Goldberg 2019-11-06 1207 struct ifla_vf_guid node_guid; a209fe95d542e8 Danit Goldberg 2019-11-06 1208 struct ifla_vf_guid port_guid; 5f8444a3fa6170 Greg Rose 2011-10-08 1209 0eed9cf58446b2 Mintz, Yuval 2017-06-07 1210 memset(&ivi, 0, sizeof(ivi)); 0eed9cf58446b2 Mintz, Yuval 2017-06-07 1211 b22b941b2c253a Hannes Frederic Sowa 2015-11-17 1212 /* Not all SR-IOV capable drivers support the 01a3d796813d63 Vlad Zolotarov 2015-03-30 1213 * spoofcheck and "RSS query enable" query. Preset to 01a3d796813d63 Vlad Zolotarov 2015-03-30 1214 * -1 so the user space tool can detect that the driver 01a3d796813d63 Vlad Zolotarov 2015-03-30 1215 * didn't report anything. 5f8444a3fa6170 Greg Rose 2011-10-08 1216 */ 5f8444a3fa6170 Greg Rose 2011-10-08 1217 ivi.spoofchk = -1; 01a3d796813d63 Vlad Zolotarov 2015-03-30 1218 ivi.rss_query_en = -1; dd461d6aa89476 Hiroshi Shimamoto 2015-08-28 1219 ivi.trusted = -1; 1d8faf48c74b83 Rony Efraim 2013-06-13 1220 /* The default value for VF link state is "auto" 1d8faf48c74b83 Rony Efraim 2013-06-13 1221 * IFLA_VF_LINK_STATE_AUTO which equals zero 1d8faf48c74b83 Rony Efraim 2013-06-13 1222 */ 1d8faf48c74b83 Rony Efraim 2013-06-13 1223 ivi.linkstate = 0; 79aab093a0b537 Moshe Shemesh 2016-09-22 1224 /* VLAN Protocol by default is 802.1Q */ 79aab093a0b537 Moshe Shemesh 2016-09-22 1225 ivi.vlan_proto = htons(ETH_P_8021Q); b22b941b2c253a Hannes Frederic Sowa 2015-11-17 1226 if (dev->netdev_ops->ndo_get_vf_config(dev, vfs_num, &ivi)) b22b941b2c253a Hannes Frederic Sowa 2015-11-17 1227 return 0; b22b941b2c253a Hannes Frederic Sowa 2015-11-17 1228 775f4f05501b3e Dan Carpenter 2016-10-13 1229 memset(&vf_vlan_info, 0, sizeof(vf_vlan_info)); 775f4f05501b3e Dan Carpenter 2016-10-13 1230 5f8444a3fa6170 Greg Rose 2011-10-08 1231 vf_mac.vf = 5f8444a3fa6170 Greg Rose 2011-10-08 1232 vf_vlan.vf = 79aab093a0b537 Moshe Shemesh 2016-09-22 1233 vf_vlan_info.vf = ed616689a3d95e Sucheta Chakraborty 2014-05-22 1234 vf_rate.vf = 5f8444a3fa6170 Greg Rose 2011-10-08 1235 vf_tx_rate.vf = 1d8faf48c74b83 Rony Efraim 2013-06-13 1236 vf_spoofchk.vf = 01a3d796813d63 Vlad Zolotarov 2015-03-30 1237 vf_linkstate.vf = dd461d6aa89476 Hiroshi Shimamoto 2015-08-28 1238 vf_rss_query_en.vf = dd461d6aa89476 Hiroshi Shimamoto 2015-08-28 1239 vf_trust.vf = ivi.vf; 5f8444a3fa6170 Greg Rose 2011-10-08 1240 c02db8c6290bb9 Chris Wright 2010-05-16 1241 memcpy(vf_mac.mac, ivi.mac, sizeof(ivi.mac)); 75345f888f700c Denis Kirjanov 2019-06-17 1242 memcpy(vf_broadcast.broadcast, dev->broadcast, dev->addr_len); c02db8c6290bb9 Chris Wright 2010-05-16 1243 vf_vlan.vlan = ivi.vlan; c02db8c6290bb9 Chris Wright 2010-05-16 1244 vf_vlan.qos = ivi.qos; 79aab093a0b537 Moshe Shemesh 2016-09-22 1245 vf_vlan_info.vlan = ivi.vlan; 79aab093a0b537 Moshe Shemesh 2016-09-22 1246 vf_vlan_info.qos = ivi.qos; 79aab093a0b537 Moshe Shemesh 2016-09-22 1247 vf_vlan_info.vlan_proto = ivi.vlan_proto; ed616689a3d95e Sucheta Chakraborty 2014-05-22 1248 vf_tx_rate.rate = ivi.max_tx_rate; ed616689a3d95e Sucheta Chakraborty 2014-05-22 1249 vf_rate.min_tx_rate = ivi.min_tx_rate; ed616689a3d95e Sucheta Chakraborty 2014-05-22 1250 vf_rate.max_tx_rate = ivi.max_tx_rate; 5f8444a3fa6170 Greg Rose 2011-10-08 1251 vf_spoofchk.setting = ivi.spoofchk; 1d8faf48c74b83 Rony Efraim 2013-06-13 1252 vf_linkstate.link_state = ivi.linkstate; 01a3d796813d63 Vlad Zolotarov 2015-03-30 1253 vf_rss_query_en.setting = ivi.rss_query_en; dd461d6aa89476 Hiroshi Shimamoto 2015-08-28 1254 vf_trust.setting = ivi.trusted; ae0be8de9a53cd Michal Kubecek 2019-04-26 1255 vf = nla_nest_start_noflag(skb, IFLA_VF_INFO); 79aab093a0b537 Moshe Shemesh 2016-09-22 1256 if (!vf) 79aab093a0b537 Moshe Shemesh 2016-09-22 1257 goto nla_put_vfinfo_failure; a6574349d068cb David S. Miller 2012-04-01 1258 if (nla_put(skb, IFLA_VF_MAC, sizeof(vf_mac), &vf_mac) || 75345f888f700c Denis Kirjanov 2019-06-17 1259 nla_put(skb, IFLA_VF_BROADCAST, sizeof(vf_broadcast), &vf_broadcast) || a6574349d068cb David S. Miller 2012-04-01 1260 nla_put(skb, IFLA_VF_VLAN, sizeof(vf_vlan), &vf_vlan) || ed616689a3d95e Sucheta Chakraborty 2014-05-22 1261 nla_put(skb, IFLA_VF_RATE, sizeof(vf_rate), ed616689a3d95e Sucheta Chakraborty 2014-05-22 1262 &vf_rate) || a6574349d068cb David S. Miller 2012-04-01 1263 nla_put(skb, IFLA_VF_TX_RATE, sizeof(vf_tx_rate), a6574349d068cb David S. Miller 2012-04-01 1264 &vf_tx_rate) || a6574349d068cb David S. Miller 2012-04-01 1265 nla_put(skb, IFLA_VF_SPOOFCHK, sizeof(vf_spoofchk), 1d8faf48c74b83 Rony Efraim 2013-06-13 1266 &vf_spoofchk) || 1d8faf48c74b83 Rony Efraim 2013-06-13 1267 nla_put(skb, IFLA_VF_LINK_STATE, sizeof(vf_linkstate), 01a3d796813d63 Vlad Zolotarov 2015-03-30 1268 &vf_linkstate) || 01a3d796813d63 Vlad Zolotarov 2015-03-30 1269 nla_put(skb, IFLA_VF_RSS_QUERY_EN, 01a3d796813d63 Vlad Zolotarov 2015-03-30 1270 sizeof(vf_rss_query_en), dd461d6aa89476 Hiroshi Shimamoto 2015-08-28 1271 &vf_rss_query_en) || dd461d6aa89476 Hiroshi Shimamoto 2015-08-28 1272 nla_put(skb, IFLA_VF_TRUST, dd461d6aa89476 Hiroshi Shimamoto 2015-08-28 1273 sizeof(vf_trust), &vf_trust)) 79aab093a0b537 Moshe Shemesh 2016-09-22 1274 goto nla_put_vf_failure; a209fe95d542e8 Danit Goldberg 2019-11-06 1275 if (dev->netdev_ops->ndo_get_vf_guid && a209fe95d542e8 Danit Goldberg 2019-11-06 1276 !dev->netdev_ops->ndo_get_vf_guid(dev, vfs_num, &node_guid, a209fe95d542e8 Danit Goldberg 2019-11-06 1277 &port_guid)) { a209fe95d542e8 Danit Goldberg 2019-11-06 1278 if (nla_put(skb, IFLA_VF_IB_NODE_GUID, sizeof(node_guid), a209fe95d542e8 Danit Goldberg 2019-11-06 @1279 &node_guid) || a209fe95d542e8 Danit Goldberg 2019-11-06 1280 nla_put(skb, IFLA_VF_IB_PORT_GUID, sizeof(port_guid), a209fe95d542e8 Danit Goldberg 2019-11-06 @1281 &port_guid)) These definitely seem like real bugs. We need to memset(&node_guid, 0, sizeof(node_guid)); memset(&port_guid, 0, sizeof(port_guid)); Using an initializer = {} is not sufficient to clear struct holes. I hope that we don't need to memzero_explicit() these like the very paranoid folks say. :( a209fe95d542e8 Danit Goldberg 2019-11-06 1282 goto nla_put_vf_failure; a209fe95d542e8 Danit Goldberg 2019-11-06 1283 } ae0be8de9a53cd Michal Kubecek 2019-04-26 1284 vfvlanlist = nla_nest_start_noflag(skb, IFLA_VF_VLAN_LIST); 79aab093a0b537 Moshe Shemesh 2016-09-22 1285 if (!vfvlanlist) 79aab093a0b537 Moshe Shemesh 2016-09-22 1286 goto nla_put_vf_failure; 79aab093a0b537 Moshe Shemesh 2016-09-22 1287 if (nla_put(skb, IFLA_VF_VLAN_INFO, sizeof(vf_vlan_info), 79aab093a0b537 Moshe Shemesh 2016-09-22 1288 &vf_vlan_info)) { 79aab093a0b537 Moshe Shemesh 2016-09-22 1289 nla_nest_cancel(skb, vfvlanlist); 79aab093a0b537 Moshe Shemesh 2016-09-22 1290 goto nla_put_vf_failure; 79aab093a0b537 Moshe Shemesh 2016-09-22 1291 } 79aab093a0b537 Moshe Shemesh 2016-09-22 1292 nla_nest_end(skb, vfvlanlist); --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org Intel Corporation