Hi Hangyu, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on net-next/master] [also build test WARNING on net/master horms-ipvs/master linus/master v6.2 next-20230221] [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/Hangyu-Hua/net-dccp-delete-redundant-ackvec-record-in-dccp_insert_options/20230221-172448 patch link: https://lore.kernel.org/r/20230221092206.39741-1-hbh25y%40gmail.com patch subject: [PATCH] net: dccp: delete redundant ackvec record in dccp_insert_options() config: i386-randconfig-a013-20230220 (https://download.01.org/0day-ci/archive/20230221/202302212209.2xKQbnhl-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/ea44b55ba82bbe3f35b51212bf839f507a30b70b git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Hangyu-Hua/net-dccp-delete-redundant-ackvec-record-in-dccp_insert_options/20230221-172448 git checkout ea44b55ba82bbe3f35b51212bf839f507a30b70b # 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/dccp/ 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/202302212209.2xKQbnhl-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): net/dccp/options.c:594:8: error: implicit declaration of function 'dccp_ackvec_lookup' is invalid in C99 [-Werror,-Wimplicit-function-declaration] avr = dccp_ackvec_lookup(&av->av_records, DCCP_SKB_CB(skb)->dccpd_seq); ^ >> net/dccp/options.c:594:6: warning: incompatible integer to pointer conversion assigning to 'struct dccp_ackvec_record *' from 'int' [-Wint-conversion] avr = dccp_ackvec_lookup(&av->av_records, DCCP_SKB_CB(skb)->dccpd_seq); ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ net/dccp/options.c:596:18: error: use of undeclared identifier 'dccp_ackvec_record_slab'; did you mean 'dccp_ackvec_clear_state'? kmem_cache_free(dccp_ackvec_record_slab, avr); ^~~~~~~~~~~~~~~~~~~~~~~ dccp_ackvec_clear_state net/dccp/ackvec.h:110:6: note: 'dccp_ackvec_clear_state' declared here void dccp_ackvec_clear_state(struct dccp_ackvec *av, const u64 ackno); ^ 1 warning and 2 errors generated. vim +594 net/dccp/options.c 548 549 int dccp_insert_options(struct sock *sk, struct sk_buff *skb) 550 { 551 struct dccp_sock *dp = dccp_sk(sk); 552 struct dccp_ackvec *av = dp->dccps_hc_rx_ackvec; 553 struct dccp_ackvec_record *avr; 554 555 DCCP_SKB_CB(skb)->dccpd_opt_len = 0; 556 557 if (dp->dccps_send_ndp_count && dccp_insert_option_ndp(sk, skb)) 558 return -1; 559 560 if (DCCP_SKB_CB(skb)->dccpd_type != DCCP_PKT_DATA) { 561 562 /* Feature Negotiation */ 563 if (dccp_feat_insert_opts(dp, NULL, skb)) 564 return -1; 565 566 if (DCCP_SKB_CB(skb)->dccpd_type == DCCP_PKT_REQUEST) { 567 /* 568 * Obtain RTT sample from Request/Response exchange. 569 * This is currently used for TFRC initialisation. 570 */ 571 if (dccp_insert_option_timestamp(skb)) 572 return -1; 573 574 } else if (dccp_ackvec_pending(sk) && 575 dccp_insert_option_ackvec(sk, skb)) { 576 return -1; 577 } 578 } 579 580 if (dp->dccps_hc_rx_insert_options) { 581 if (ccid_hc_rx_insert_options(dp->dccps_hc_rx_ccid, sk, skb)) 582 goto delete_ackvec; 583 dp->dccps_hc_rx_insert_options = 0; 584 } 585 586 if (dp->dccps_timestamp_echo != 0 && 587 dccp_insert_option_timestamp_echo(dp, NULL, skb)) 588 goto delete_ackvec; 589 590 dccp_insert_option_padding(skb); 591 return 0; 592 593 delete_ackvec: > 594 avr = dccp_ackvec_lookup(&av->av_records, DCCP_SKB_CB(skb)->dccpd_seq); 595 list_del(&avr->avr_node); 596 kmem_cache_free(dccp_ackvec_record_slab, avr); 597 return -1; 598 } 599 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests
