Hi Lin, [auto build test ERROR on net-next/master] url: https://github.com/0day-ci/linux/commits/Lin-Zhang/netfilter-conntrack-add-a-new-NF_CT_EXT_EXPAND-extension/20170627-000844 config: i386-allyesconfig (attached as .config) compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901 reproduce: # save the attached .config to linux build tree make ARCH=i386 All errors (new ones prefixed by >>): In function 'total_extension_size', inlined from 'nf_conntrack_init_start' at net//netfilter/nf_conntrack_core.c:1893:25: >> net//netfilter/nf_conntrack_core.c:1859:171: error: call to '__compiletime_assert_1859' declared with attribute error: BUILD_BUG_ON failed: NF_CT_EXT_NUM > 9 BUILD_BUG_ON(NF_CT_EXT_NUM > 9); ^ vim +/__compiletime_assert_1859 +1859 net//netfilter/nf_conntrack_core.c fae718dda Patrick McHardy 2007-12-24 1853 module_param_call(hashsize, nf_conntrack_set_hashsize, param_get_uint, 9fb9cbb10 Yasuyuki Kozakai 2005-11-09 1854 &nf_conntrack_htable_size, 0600); 9fb9cbb10 Yasuyuki Kozakai 2005-11-09 1855 ab71632c4 Geert Uytterhoeven 2017-05-03 1856 static __always_inline unsigned int total_extension_size(void) b3a5db109 Florian Westphal 2017-04-16 1857 { b3a5db109 Florian Westphal 2017-04-16 1858 /* remember to add new extensions below */ b3a5db109 Florian Westphal 2017-04-16 @1859 BUILD_BUG_ON(NF_CT_EXT_NUM > 9); b3a5db109 Florian Westphal 2017-04-16 1860 b3a5db109 Florian Westphal 2017-04-16 1861 return sizeof(struct nf_ct_ext) + b3a5db109 Florian Westphal 2017-04-16 1862 sizeof(struct nf_conn_help) b3a5db109 Florian Westphal 2017-04-16 1863 #if IS_ENABLED(CONFIG_NF_NAT) b3a5db109 Florian Westphal 2017-04-16 1864 + sizeof(struct nf_conn_nat) b3a5db109 Florian Westphal 2017-04-16 1865 #endif b3a5db109 Florian Westphal 2017-04-16 1866 + sizeof(struct nf_conn_seqadj) b3a5db109 Florian Westphal 2017-04-16 1867 + sizeof(struct nf_conn_acct) b3a5db109 Florian Westphal 2017-04-16 1868 #ifdef CONFIG_NF_CONNTRACK_EVENTS b3a5db109 Florian Westphal 2017-04-16 1869 + sizeof(struct nf_conntrack_ecache) b3a5db109 Florian Westphal 2017-04-16 1870 #endif b3a5db109 Florian Westphal 2017-04-16 1871 #ifdef CONFIG_NF_CONNTRACK_TIMESTAMP b3a5db109 Florian Westphal 2017-04-16 1872 + sizeof(struct nf_conn_tstamp) b3a5db109 Florian Westphal 2017-04-16 1873 #endif b3a5db109 Florian Westphal 2017-04-16 1874 #ifdef CONFIG_NF_CONNTRACK_TIMEOUT b3a5db109 Florian Westphal 2017-04-16 1875 + sizeof(struct nf_conn_timeout) b3a5db109 Florian Westphal 2017-04-16 1876 #endif b3a5db109 Florian Westphal 2017-04-16 1877 #ifdef CONFIG_NF_CONNTRACK_LABELS b3a5db109 Florian Westphal 2017-04-16 1878 + sizeof(struct nf_conn_labels) b3a5db109 Florian Westphal 2017-04-16 1879 #endif b3a5db109 Florian Westphal 2017-04-16 1880 #if IS_ENABLED(CONFIG_NETFILTER_SYNPROXY) b3a5db109 Florian Westphal 2017-04-16 1881 + sizeof(struct nf_conn_synproxy) b3a5db109 Florian Westphal 2017-04-16 1882 #endif b3a5db109 Florian Westphal 2017-04-16 1883 ; b3a5db109 Florian Westphal 2017-04-16 1884 }; b3a5db109 Florian Westphal 2017-04-16 1885 f94161c1b Gao feng 2013-01-21 1886 int nf_conntrack_init_start(void) 9fb9cbb10 Yasuyuki Kozakai 2005-11-09 1887 { f205c5e0c Patrick McHardy 2007-07-07 1888 int max_factor = 8; 0c5366b3a Florian Westphal 2016-05-09 1889 int ret = -ENOMEM; cc41c84b7 Florian Westphal 2017-04-14 1890 int i; 93bb0ceb7 Jesper Dangaard Brouer 2014-03-03 1891 b3a5db109 Florian Westphal 2017-04-16 1892 /* struct nf_ct_ext uses u8 to store offsets/size */ b3a5db109 Florian Westphal 2017-04-16 @1893 BUILD_BUG_ON(total_extension_size() > 255u); b3a5db109 Florian Westphal 2017-04-16 1894 a3efd8120 Florian Westphal 2016-04-18 1895 seqcount_init(&nf_conntrack_generation); a3efd8120 Florian Westphal 2016-04-18 1896 :::::: The code at line 1859 was first introduced by commit :::::: b3a5db109e0670d6d168e9cd9de4d272a68f7c35 netfilter: conntrack: use u8 for extension sizes again :::::: TO: Florian Westphal <fw@xxxxxxxxx> :::::: CC: Pablo Neira Ayuso <pablo@xxxxxxxxxxxxx> --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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