Hi Luuk, [auto build test ERROR on nf-next/master] [also build test ERROR on v4.4-rc5 next-20151216] url: https://github.com/0day-ci/linux/commits/Luuk-Paulussen/Add-tcindex-to-conntrack-and-add-netfilter-target-matches/20151216-082324 base: https://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-next master config: x86_64-randconfig-x019-12171138 (attached as .config) reproduce: # save the attached .config to linux build tree make ARCH=x86_64 All errors (new ones prefixed by >>): net/built-in.o: In function `conntcindex_tg_destroy': >> xt_conntcindex.c:(.text+0x7cf5d): undefined reference to `nf_ct_l3proto_module_put' net/built-in.o: In function `conntcindex_mt_destroy': xt_conntcindex.c:(.text+0x7cf71): undefined reference to `nf_ct_l3proto_module_put' net/built-in.o: In function `conntcindex_tg_check': >> xt_conntcindex.c:(.text+0x7d0aa): undefined reference to `nf_ct_l3proto_try_module_get' net/built-in.o: In function `conntcindex_mt_check': xt_conntcindex.c:(.text+0x7d0f2): undefined reference to `nf_ct_l3proto_try_module_get' --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation