Hi Eric, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on horms-ipvs/master] [also build test WARNING on linus/master v6.3-rc3 next-20230324] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Eric-Sage/netfilter-nfnetlink_queue-enable-classid-socket-info-retrieval/20230324-034613 base: https://git.kernel.org/pub/scm/linux/kernel/git/horms/ipvs.git master patch link: https://lore.kernel.org/r/20230323184438.42218-1-eric_sage%40apple.com patch subject: [PATCH v3] netfilter: nfnetlink_queue: enable classid socket info retrieval config: i386-allyesconfig (https://download.01.org/0day-ci/archive/20230325/202303252207.P9ydXMRy-lkp@xxxxxxxxx/config) compiler: clang version 14.0.6 (https://github.com/llvm/llvm-project f28c006a5895fc0e329fe15fead81e37457cb1d1) 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 # https://github.com/intel-lab-lkp/linux/commit/5337cbc118f664da3b9316c76695fdd28eaeeb65 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Eric-Sage/netfilter-nfnetlink_queue-enable-classid-socket-info-retrieval/20230324-034613 git checkout 5337cbc118f664da3b9316c76695fdd28eaeeb65 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=i386 olddefconfig COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=i386 SHELL=/bin/bash net/netfilter/ If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Link: https://lore.kernel.org/oe-kbuild-all/202303252207.P9ydXMRy-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): >> net/netfilter/nfnetlink_queue.c:425:3: warning: expression result unused [-Wunused-value] + nla_total_size(sizeof(u_int32_t)); /* classid */ ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 1 warning generated. vim +425 net/netfilter/nfnetlink_queue.c 387 388 static struct sk_buff * 389 nfqnl_build_packet_message(struct net *net, struct nfqnl_instance *queue, 390 struct nf_queue_entry *entry, 391 __be32 **packet_id_ptr) 392 { 393 size_t size; 394 size_t data_len = 0, cap_len = 0; 395 unsigned int hlen = 0; 396 struct sk_buff *skb; 397 struct nlattr *nla; 398 struct nfqnl_msg_packet_hdr *pmsg; 399 struct nlmsghdr *nlh; 400 struct sk_buff *entskb = entry->skb; 401 struct net_device *indev; 402 struct net_device *outdev; 403 struct nf_conn *ct = NULL; 404 enum ip_conntrack_info ctinfo = 0; 405 const struct nfnl_ct_hook *nfnl_ct; 406 bool csum_verify; 407 char *secdata = NULL; 408 u32 seclen = 0; 409 ktime_t tstamp; 410 411 size = nlmsg_total_size(sizeof(struct nfgenmsg)) 412 + nla_total_size(sizeof(struct nfqnl_msg_packet_hdr)) 413 + nla_total_size(sizeof(u_int32_t)) /* ifindex */ 414 + nla_total_size(sizeof(u_int32_t)) /* ifindex */ 415 #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER) 416 + nla_total_size(sizeof(u_int32_t)) /* ifindex */ 417 + nla_total_size(sizeof(u_int32_t)) /* ifindex */ 418 #endif 419 + nla_total_size(sizeof(u_int32_t)) /* mark */ 420 + nla_total_size(sizeof(u_int32_t)) /* priority */ 421 + nla_total_size(sizeof(struct nfqnl_msg_packet_hw)) 422 + nla_total_size(sizeof(u_int32_t)) /* skbinfo */ 423 + nla_total_size(sizeof(u_int32_t)); /* cap_len */ 424 #if IS_ENABLED(CONFIG_CGROUP_NET_CLASSID) > 425 + nla_total_size(sizeof(u_int32_t)); /* classid */ 426 #endif 427 428 tstamp = skb_tstamp_cond(entskb, false); 429 if (tstamp) 430 size += nla_total_size(sizeof(struct nfqnl_msg_packet_timestamp)); 431 432 size += nfqnl_get_bridge_size(entry); 433 434 if (entry->state.hook <= NF_INET_FORWARD || 435 (entry->state.hook == NF_INET_POST_ROUTING && entskb->sk == NULL)) 436 csum_verify = !skb_csum_unnecessary(entskb); 437 else 438 csum_verify = false; 439 440 outdev = entry->state.out; 441 442 switch ((enum nfqnl_config_mode)READ_ONCE(queue->copy_mode)) { 443 case NFQNL_COPY_META: 444 case NFQNL_COPY_NONE: 445 break; 446 447 case NFQNL_COPY_PACKET: 448 if (!(queue->flags & NFQA_CFG_F_GSO) && 449 entskb->ip_summed == CHECKSUM_PARTIAL && 450 skb_checksum_help(entskb)) 451 return NULL; 452 453 data_len = READ_ONCE(queue->copy_range); 454 if (data_len > entskb->len) 455 data_len = entskb->len; 456 457 hlen = skb_zerocopy_headlen(entskb); 458 hlen = min_t(unsigned int, hlen, data_len); 459 size += sizeof(struct nlattr) + hlen; 460 cap_len = entskb->len; 461 break; 462 } 463 464 nfnl_ct = rcu_dereference(nfnl_ct_hook); 465 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests
