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Date: Mon, 4 Mar 2019 15:47:05 +0800
From: kbuild test robot <lkp@...el.com>
To: Su Yanjun <suyj.fnst@...fujitsu.com>
Cc: kbuild-all@...org, davem@...emloft.net,
steffen.klassert@...unet.com, fw@...len.de, netdev@...r.kernel.org,
linux-kernel@...r.kernel.org, suyj.fnst@...fujitsu.com
Subject: Re: [PATCH] net: xfrm: Add '_rcu' tag for rcu protected pointer in
netns_xfrm
Hi Su,
Thank you for the patch! Perhaps something to improve:
[auto build test WARNING on net-next/master]
[also build test WARNING on v5.0 next-20190301]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]
url: https://github.com/0day-ci/linux/commits/Su-Yanjun/net-xfrm-Add-_rcu-tag-for-rcu-protected-pointer-in-netns_xfrm/20190304-135248
reproduce:
# apt-get install sparse
make ARCH=x86_64 allmodconfig
make C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__'
All warnings (new ones prefixed by >>):
>> net/xfrm/xfrm_user.c:1198:39: sparse: warning: incorrect type in argument 1 (different address spaces)
net/xfrm/xfrm_user.c:1198:39: sparse: expected struct sock *sk
net/xfrm/xfrm_user.c:1198:39: sparse: got struct sock [noderef] <asn:4> *nlsk
net/xfrm/xfrm_user.c:1257:39: sparse: warning: incorrect type in argument 1 (different address spaces)
net/xfrm/xfrm_user.c:1257:39: sparse: expected struct sock *sk
net/xfrm/xfrm_user.c:1257:39: sparse: got struct sock [noderef] <asn:4> *nlsk
net/xfrm/xfrm_user.c:1277:46: sparse: warning: incorrect type in argument 1 (different address spaces)
net/xfrm/xfrm_user.c:1277:46: sparse: expected struct sock *sk
net/xfrm/xfrm_user.c:1277:46: sparse: got struct sock [noderef] <asn:4> *nlsk
net/xfrm/xfrm_user.c:1340:38: sparse: warning: incorrect type in argument 1 (different address spaces)
net/xfrm/xfrm_user.c:1340:38: sparse: expected struct sock *sk
net/xfrm/xfrm_user.c:1340:38: sparse: got struct sock [noderef] <asn:4> *nlsk
net/xfrm/xfrm_user.c:1906:54: sparse: warning: incorrect type in argument 1 (different address spaces)
net/xfrm/xfrm_user.c:1906:54: sparse: expected struct sock *sk
net/xfrm/xfrm_user.c:1906:54: sparse: got struct sock [noderef] <asn:4> *nlsk
net/xfrm/xfrm_user.c:2065:38: sparse: warning: incorrect type in argument 1 (different address spaces)
net/xfrm/xfrm_user.c:2065:38: sparse: expected struct sock *sk
net/xfrm/xfrm_user.c:2065:38: sparse: got struct sock [noderef] <asn:4> *nlsk
net/xfrm/xfrm_user.c:2655:60: sparse: warning: incorrect type in argument 1 (different address spaces)
net/xfrm/xfrm_user.c:2655:60: sparse: expected struct sock *ssk
net/xfrm/xfrm_user.c:2655:60: sparse: got struct sock [noderef] <asn:4> *nlsk
sparse warnings: (new ones prefixed by >>)
net/xfrm/xfrm_user.c:1198:39: sparse: warning: incorrect type in argument 1 (different address spaces)
>> net/xfrm/xfrm_user.c:1198:39: sparse: expected struct sock *sk
>> net/xfrm/xfrm_user.c:1198:39: sparse: got struct sock [noderef] <asn:4> *nlsk
net/xfrm/xfrm_user.c:1257:39: sparse: warning: incorrect type in argument 1 (different address spaces)
net/xfrm/xfrm_user.c:1257:39: sparse: expected struct sock *sk
net/xfrm/xfrm_user.c:1257:39: sparse: got struct sock [noderef] <asn:4> *nlsk
net/xfrm/xfrm_user.c:1277:46: sparse: warning: incorrect type in argument 1 (different address spaces)
net/xfrm/xfrm_user.c:1277:46: sparse: expected struct sock *sk
net/xfrm/xfrm_user.c:1277:46: sparse: got struct sock [noderef] <asn:4> *nlsk
net/xfrm/xfrm_user.c:1340:38: sparse: warning: incorrect type in argument 1 (different address spaces)
net/xfrm/xfrm_user.c:1340:38: sparse: expected struct sock *sk
net/xfrm/xfrm_user.c:1340:38: sparse: got struct sock [noderef] <asn:4> *nlsk
net/xfrm/xfrm_user.c:1906:54: sparse: warning: incorrect type in argument 1 (different address spaces)
net/xfrm/xfrm_user.c:1906:54: sparse: expected struct sock *sk
net/xfrm/xfrm_user.c:1906:54: sparse: got struct sock [noderef] <asn:4> *nlsk
net/xfrm/xfrm_user.c:2065:38: sparse: warning: incorrect type in argument 1 (different address spaces)
net/xfrm/xfrm_user.c:2065:38: sparse: expected struct sock *sk
net/xfrm/xfrm_user.c:2065:38: sparse: got struct sock [noderef] <asn:4> *nlsk
net/xfrm/xfrm_user.c:2655:60: sparse: warning: incorrect type in argument 1 (different address spaces)
>> net/xfrm/xfrm_user.c:2655:60: sparse: expected struct sock *ssk
net/xfrm/xfrm_user.c:2655:60: sparse: got struct sock [noderef] <asn:4> *nlsk
vim +1198 net/xfrm/xfrm_user.c
880a6fab Christophe Gouault 2014-08-29 1180
ecfd6b18 Jamal Hadi Salim 2007-04-28 1181 static int xfrm_get_spdinfo(struct sk_buff *skb, struct nlmsghdr *nlh,
5424f32e Thomas Graf 2007-08-22 1182 struct nlattr **attrs)
ecfd6b18 Jamal Hadi Salim 2007-04-28 1183 {
a6483b79 Alexey Dobriyan 2008-11-25 1184 struct net *net = sock_net(skb->sk);
ecfd6b18 Jamal Hadi Salim 2007-04-28 1185 struct sk_buff *r_skb;
7b67c857 Thomas Graf 2007-08-22 1186 u32 *flags = nlmsg_data(nlh);
15e47304 Eric W. Biederman 2012-09-07 1187 u32 sportid = NETLINK_CB(skb).portid;
ecfd6b18 Jamal Hadi Salim 2007-04-28 1188 u32 seq = nlh->nlmsg_seq;
2fc5f83b Gustavo A. R. Silva 2017-10-26 1189 int err;
ecfd6b18 Jamal Hadi Salim 2007-04-28 1190
7deb2264 Thomas Graf 2007-08-22 1191 r_skb = nlmsg_new(xfrm_spdinfo_msgsize(), GFP_ATOMIC);
ecfd6b18 Jamal Hadi Salim 2007-04-28 1192 if (r_skb == NULL)
ecfd6b18 Jamal Hadi Salim 2007-04-28 1193 return -ENOMEM;
ecfd6b18 Jamal Hadi Salim 2007-04-28 1194
2fc5f83b Gustavo A. R. Silva 2017-10-26 1195 err = build_spdinfo(r_skb, net, sportid, seq, *flags);
2fc5f83b Gustavo A. R. Silva 2017-10-26 1196 BUG_ON(err < 0);
ecfd6b18 Jamal Hadi Salim 2007-04-28 1197
15e47304 Eric W. Biederman 2012-09-07 @1198 return nlmsg_unicast(net->xfrm.nlsk, r_skb, sportid);
ecfd6b18 Jamal Hadi Salim 2007-04-28 1199 }
ecfd6b18 Jamal Hadi Salim 2007-04-28 1200
a1b831f2 Alexey Dobriyan 2017-09-21 1201 static inline unsigned int xfrm_sadinfo_msgsize(void)
7deb2264 Thomas Graf 2007-08-22 1202 {
7deb2264 Thomas Graf 2007-08-22 1203 return NLMSG_ALIGN(4)
7deb2264 Thomas Graf 2007-08-22 1204 + nla_total_size(sizeof(struct xfrmu_sadhinfo))
7deb2264 Thomas Graf 2007-08-22 1205 + nla_total_size(4); /* XFRMA_SAD_CNT */
7deb2264 Thomas Graf 2007-08-22 1206 }
7deb2264 Thomas Graf 2007-08-22 1207
e071041b Alexey Dobriyan 2010-01-23 1208 static int build_sadinfo(struct sk_buff *skb, struct net *net,
15e47304 Eric W. Biederman 2012-09-07 1209 u32 portid, u32 seq, u32 flags)
28d8909b Jamal Hadi Salim 2007-04-26 1210 {
af11e316 Jamal Hadi Salim 2007-05-04 1211 struct xfrmk_sadinfo si;
af11e316 Jamal Hadi Salim 2007-05-04 1212 struct xfrmu_sadhinfo sh;
28d8909b Jamal Hadi Salim 2007-04-26 1213 struct nlmsghdr *nlh;
1d1e34dd David S. Miller 2012-06-27 1214 int err;
28d8909b Jamal Hadi Salim 2007-04-26 1215 u32 *f;
28d8909b Jamal Hadi Salim 2007-04-26 1216
15e47304 Eric W. Biederman 2012-09-07 1217 nlh = nlmsg_put(skb, portid, seq, XFRM_MSG_NEWSADINFO, sizeof(u32), 0);
25985edc Lucas De Marchi 2011-03-30 1218 if (nlh == NULL) /* shouldn't really happen ... */
28d8909b Jamal Hadi Salim 2007-04-26 1219 return -EMSGSIZE;
28d8909b Jamal Hadi Salim 2007-04-26 1220
28d8909b Jamal Hadi Salim 2007-04-26 1221 f = nlmsg_data(nlh);
28d8909b Jamal Hadi Salim 2007-04-26 1222 *f = flags;
e071041b Alexey Dobriyan 2010-01-23 1223 xfrm_sad_getinfo(net, &si);
28d8909b Jamal Hadi Salim 2007-04-26 1224
af11e316 Jamal Hadi Salim 2007-05-04 1225 sh.sadhmcnt = si.sadhmcnt;
af11e316 Jamal Hadi Salim 2007-05-04 1226 sh.sadhcnt = si.sadhcnt;
af11e316 Jamal Hadi Salim 2007-05-04 1227
1d1e34dd David S. Miller 2012-06-27 1228 err = nla_put_u32(skb, XFRMA_SAD_CNT, si.sadcnt);
1d1e34dd David S. Miller 2012-06-27 1229 if (!err)
1d1e34dd David S. Miller 2012-06-27 1230 err = nla_put(skb, XFRMA_SAD_HINFO, sizeof(sh), &sh);
1d1e34dd David S. Miller 2012-06-27 1231 if (err) {
1d1e34dd David S. Miller 2012-06-27 1232 nlmsg_cancel(skb, nlh);
1d1e34dd David S. Miller 2012-06-27 1233 return err;
1d1e34dd David S. Miller 2012-06-27 1234 }
28d8909b Jamal Hadi Salim 2007-04-26 1235
053c095a Johannes Berg 2015-01-16 1236 nlmsg_end(skb, nlh);
053c095a Johannes Berg 2015-01-16 1237 return 0;
28d8909b Jamal Hadi Salim 2007-04-26 1238 }
28d8909b Jamal Hadi Salim 2007-04-26 1239
28d8909b Jamal Hadi Salim 2007-04-26 1240 static int xfrm_get_sadinfo(struct sk_buff *skb, struct nlmsghdr *nlh,
5424f32e Thomas Graf 2007-08-22 1241 struct nlattr **attrs)
28d8909b Jamal Hadi Salim 2007-04-26 1242 {
a6483b79 Alexey Dobriyan 2008-11-25 1243 struct net *net = sock_net(skb->sk);
28d8909b Jamal Hadi Salim 2007-04-26 1244 struct sk_buff *r_skb;
7b67c857 Thomas Graf 2007-08-22 1245 u32 *flags = nlmsg_data(nlh);
15e47304 Eric W. Biederman 2012-09-07 1246 u32 sportid = NETLINK_CB(skb).portid;
28d8909b Jamal Hadi Salim 2007-04-26 1247 u32 seq = nlh->nlmsg_seq;
2fc5f83b Gustavo A. R. Silva 2017-10-26 1248 int err;
28d8909b Jamal Hadi Salim 2007-04-26 1249
7deb2264 Thomas Graf 2007-08-22 1250 r_skb = nlmsg_new(xfrm_sadinfo_msgsize(), GFP_ATOMIC);
28d8909b Jamal Hadi Salim 2007-04-26 1251 if (r_skb == NULL)
28d8909b Jamal Hadi Salim 2007-04-26 1252 return -ENOMEM;
28d8909b Jamal Hadi Salim 2007-04-26 1253
2fc5f83b Gustavo A. R. Silva 2017-10-26 1254 err = build_sadinfo(r_skb, net, sportid, seq, *flags);
2fc5f83b Gustavo A. R. Silva 2017-10-26 1255 BUG_ON(err < 0);
28d8909b Jamal Hadi Salim 2007-04-26 1256
15e47304 Eric W. Biederman 2012-09-07 1257 return nlmsg_unicast(net->xfrm.nlsk, r_skb, sportid);
28d8909b Jamal Hadi Salim 2007-04-26 1258 }
28d8909b Jamal Hadi Salim 2007-04-26 1259
22e70050 Christoph Hellwig 2007-01-02 1260 static int xfrm_get_sa(struct sk_buff *skb, struct nlmsghdr *nlh,
5424f32e Thomas Graf 2007-08-22 1261 struct nlattr **attrs)
^1da177e Linus Torvalds 2005-04-16 1262 {
fc34acd3 Alexey Dobriyan 2008-11-25 1263 struct net *net = sock_net(skb->sk);
7b67c857 Thomas Graf 2007-08-22 1264 struct xfrm_usersa_id *p = nlmsg_data(nlh);
^1da177e Linus Torvalds 2005-04-16 1265 struct xfrm_state *x;
^1da177e Linus Torvalds 2005-04-16 1266 struct sk_buff *resp_skb;
eb2971b6 Masahide NAKAMURA 2006-08-23 1267 int err = -ESRCH;
^1da177e Linus Torvalds 2005-04-16 1268
fc34acd3 Alexey Dobriyan 2008-11-25 1269 x = xfrm_user_state_lookup(net, p, attrs, &err);
^1da177e Linus Torvalds 2005-04-16 1270 if (x == NULL)
^1da177e Linus Torvalds 2005-04-16 1271 goto out_noput;
^1da177e Linus Torvalds 2005-04-16 1272
^1da177e Linus Torvalds 2005-04-16 1273 resp_skb = xfrm_state_netlink(skb, x, nlh->nlmsg_seq);
^1da177e Linus Torvalds 2005-04-16 1274 if (IS_ERR(resp_skb)) {
^1da177e Linus Torvalds 2005-04-16 1275 err = PTR_ERR(resp_skb);
^1da177e Linus Torvalds 2005-04-16 1276 } else {
15e47304 Eric W. Biederman 2012-09-07 1277 err = nlmsg_unicast(net->xfrm.nlsk, resp_skb, NETLINK_CB(skb).portid);
^1da177e Linus Torvalds 2005-04-16 1278 }
^1da177e Linus Torvalds 2005-04-16 1279 xfrm_state_put(x);
^1da177e Linus Torvalds 2005-04-16 1280 out_noput:
^1da177e Linus Torvalds 2005-04-16 1281 return err;
^1da177e Linus Torvalds 2005-04-16 1282 }
^1da177e Linus Torvalds 2005-04-16 1283
22e70050 Christoph Hellwig 2007-01-02 1284 static int xfrm_alloc_userspi(struct sk_buff *skb, struct nlmsghdr *nlh,
5424f32e Thomas Graf 2007-08-22 1285 struct nlattr **attrs)
^1da177e Linus Torvalds 2005-04-16 1286 {
fc34acd3 Alexey Dobriyan 2008-11-25 1287 struct net *net = sock_net(skb->sk);
^1da177e Linus Torvalds 2005-04-16 1288 struct xfrm_state *x;
^1da177e Linus Torvalds 2005-04-16 1289 struct xfrm_userspi_info *p;
^1da177e Linus Torvalds 2005-04-16 1290 struct sk_buff *resp_skb;
^1da177e Linus Torvalds 2005-04-16 1291 xfrm_address_t *daddr;
^1da177e Linus Torvalds 2005-04-16 1292 int family;
^1da177e Linus Torvalds 2005-04-16 1293 int err;
6f26b61e Jamal Hadi Salim 2010-02-22 1294 u32 mark;
6f26b61e Jamal Hadi Salim 2010-02-22 1295 struct xfrm_mark m;
7e652640 Steffen Klassert 2018-06-12 1296 u32 if_id = 0;
^1da177e Linus Torvalds 2005-04-16 1297
7b67c857 Thomas Graf 2007-08-22 1298 p = nlmsg_data(nlh);
776e9dd9 Fan Du 2013-12-16 1299 err = verify_spi_info(p->info.id.proto, p->min, p->max);
^1da177e Linus Torvalds 2005-04-16 1300 if (err)
^1da177e Linus Torvalds 2005-04-16 1301 goto out_noput;
^1da177e Linus Torvalds 2005-04-16 1302
^1da177e Linus Torvalds 2005-04-16 1303 family = p->info.family;
^1da177e Linus Torvalds 2005-04-16 1304 daddr = &p->info.id.daddr;
^1da177e Linus Torvalds 2005-04-16 1305
^1da177e Linus Torvalds 2005-04-16 1306 x = NULL;
6f26b61e Jamal Hadi Salim 2010-02-22 1307
6f26b61e Jamal Hadi Salim 2010-02-22 1308 mark = xfrm_mark_get(attrs, &m);
7e652640 Steffen Klassert 2018-06-12 1309
7e652640 Steffen Klassert 2018-06-12 1310 if (attrs[XFRMA_IF_ID])
7e652640 Steffen Klassert 2018-06-12 1311 if_id = nla_get_u32(attrs[XFRMA_IF_ID]);
7e652640 Steffen Klassert 2018-06-12 1312
^1da177e Linus Torvalds 2005-04-16 1313 if (p->info.seq) {
6f26b61e Jamal Hadi Salim 2010-02-22 1314 x = xfrm_find_acq_byseq(net, mark, p->info.seq);
70e94e66 YOSHIFUJI Hideaki / 吉藤英明 2013-01-29 1315 if (x && !xfrm_addr_equal(&x->id.daddr, daddr, family)) {
^1da177e Linus Torvalds 2005-04-16 1316 xfrm_state_put(x);
^1da177e Linus Torvalds 2005-04-16 1317 x = NULL;
^1da177e Linus Torvalds 2005-04-16 1318 }
^1da177e Linus Torvalds 2005-04-16 1319 }
^1da177e Linus Torvalds 2005-04-16 1320
^1da177e Linus Torvalds 2005-04-16 1321 if (!x)
6f26b61e Jamal Hadi Salim 2010-02-22 1322 x = xfrm_find_acq(net, &m, p->info.mode, p->info.reqid,
7e652640 Steffen Klassert 2018-06-12 1323 if_id, p->info.id.proto, daddr,
^1da177e Linus Torvalds 2005-04-16 1324 &p->info.saddr, 1,
^1da177e Linus Torvalds 2005-04-16 1325 family);
^1da177e Linus Torvalds 2005-04-16 1326 err = -ENOENT;
^1da177e Linus Torvalds 2005-04-16 1327 if (x == NULL)
^1da177e Linus Torvalds 2005-04-16 1328 goto out_noput;
^1da177e Linus Torvalds 2005-04-16 1329
658b219e Herbert Xu 2007-10-09 1330 err = xfrm_alloc_spi(x, p->min, p->max);
658b219e Herbert Xu 2007-10-09 1331 if (err)
658b219e Herbert Xu 2007-10-09 1332 goto out;
^1da177e Linus Torvalds 2005-04-16 1333
^1da177e Linus Torvalds 2005-04-16 1334 resp_skb = xfrm_state_netlink(skb, x, nlh->nlmsg_seq);
^1da177e Linus Torvalds 2005-04-16 1335 if (IS_ERR(resp_skb)) {
^1da177e Linus Torvalds 2005-04-16 1336 err = PTR_ERR(resp_skb);
^1da177e Linus Torvalds 2005-04-16 1337 goto out;
^1da177e Linus Torvalds 2005-04-16 1338 }
^1da177e Linus Torvalds 2005-04-16 1339
15e47304 Eric W. Biederman 2012-09-07 @1340 err = nlmsg_unicast(net->xfrm.nlsk, resp_skb, NETLINK_CB(skb).portid);
^1da177e Linus Torvalds 2005-04-16 1341
^1da177e Linus Torvalds 2005-04-16 1342 out:
^1da177e Linus Torvalds 2005-04-16 1343 xfrm_state_put(x);
^1da177e Linus Torvalds 2005-04-16 1344 out_noput:
^1da177e Linus Torvalds 2005-04-16 1345 return err;
^1da177e Linus Torvalds 2005-04-16 1346 }
^1da177e Linus Torvalds 2005-04-16 1347
:::::: The code at line 1198 was first introduced by commit
:::::: 15e473046cb6e5d18a4d0057e61d76315230382b netlink: Rename pid to portid to avoid confusion
:::::: TO: Eric W. Biederman <ebiederm@...ssion.com>
:::::: CC: David S. Miller <davem@...emloft.net>
---
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