Hi Gao, [auto build test WARNING on nf-next/master] url: https://github.com/0day-ci/linux/commits/Pablo-Neira-Ayuso/netfilter-nf_ct_helper-define-pr_fmt/20160104-195139 base: https://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-next master config: i386-randconfig-x008-01040616 (attached as .config) reproduce: # save the attached .config to linux build tree make ARCH=i386 Note: it may well be a FALSE warning. FWIW you are at least aware of it now. http://gcc.gnu.org/wiki/Better_Uninitialized_Warnings All warnings (new ones prefixed by >>): net/netfilter/nf_conntrack_helper.c: In function 'nf_conntrack_helpers_register': >> net/netfilter/nf_conntrack_helper.c:493:6: warning: 'err' may be used uninitialized in this function [-Wmaybe-uninitialized] int err; ^ vim +/err +493 net/netfilter/nf_conntrack_helper.c 477 helper->help = help; 478 helper->from_nlattr = from_nlattr; 479 helper->me = module; 480 481 if (spec_port == default_port) 482 snprintf(helper->name, sizeof(helper->name), "%s", name); 483 else 484 snprintf(helper->name, sizeof(helper->name), "%s-%u", name, 485 spec_port); 486 } 487 EXPORT_SYMBOL_GPL(nf_ct_helper_init); 488 489 int nf_conntrack_helpers_register(struct nf_conntrack_helper *helper, 490 unsigned int n) 491 { 492 unsigned int i; > 493 int err; 494 495 for (i = 0; i < n; i++) { 496 err = nf_conntrack_helper_register(&helper[i]); 497 if (err < 0) 498 goto err; 499 } 500 501 return err; --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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