Hi xiaolinkui, kernel test robot noticed the following build errors: [auto build test ERROR on netfilter-nf/main] [also build test ERROR on nf-next/master horms-ipvs/master linus/master v6.6-rc6 next-20231016] [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/xiaolinkui/netfilter-ipset-wait-for-xt_recseq-on-all-cpus/20231005-234042 base: git://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf.git main patch link: https://lore.kernel.org/r/20231005115022.12902-1-xiaolinkui%40126.com patch subject: [PATCH] netfilter: ipset: wait for xt_recseq on all cpus config: i386-randconfig-016-20231016 (https://download.01.org/0day-ci/archive/20231016/202310161728.mW3lt1Jl-lkp@xxxxxxxxx/config) compiler: gcc-12 (Debian 12.2.0-14) 12.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231016/202310161728.mW3lt1Jl-lkp@xxxxxxxxx/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202310161728.mW3lt1Jl-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>): ld: net/netfilter/ipset/ip_set_core.o: in function `wait_xt_recseq': >> net/netfilter/ipset/ip_set_core.c:1194: undefined reference to `xt_recseq' vim +1194 net/netfilter/ipset/ip_set_core.c 1187 1188 static void wait_xt_recseq(void) 1189 { 1190 unsigned int cpu; 1191 1192 /* wait for even xt_recseq on all cpus */ 1193 for_each_possible_cpu(cpu) { > 1194 seqcount_t *s = &per_cpu(xt_recseq, cpu); 1195 u32 seq = raw_read_seqcount(s); 1196 1197 if (seq & 1) { 1198 do { 1199 cond_resched(); 1200 cpu_relax(); 1201 } while (seq == raw_read_seqcount(s)); 1202 } 1203 } 1204 } 1205 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki