Hi Florian, I love your patch! Perhaps something to improve: [auto build test WARNING on nf-next/master] url: https://github.com/0day-ci/linux/commits/Florian-Westphal/netfilter-remove-xtables-pointers-from-struct-net/20210420-202627 base: https://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-next.git master config: x86_64-randconfig-a006-20210420 (attached as .config) compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project ca8eef7e3da8f750d7c7aa004fe426d1d34787ea) 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 # install x86_64 cross compiling tool for clang build # apt-get install binutils-x86-64-linux-gnu # https://github.com/0day-ci/linux/commit/8851cbce76d6751ac25fc0a7971f5fdea96e3d6f git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Florian-Westphal/netfilter-remove-xtables-pointers-from-struct-net/20210420-202627 git checkout 8851cbce76d6751ac25fc0a7971f5fdea96e3d6f # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 ARCH=x86_64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): >> net/ipv4/netfilter/ip_tables.c:1773:6: warning: no previous prototype for function 'ipt_unregister_table' [-Wmissing-prototypes] void ipt_unregister_table(struct net *net, struct xt_table *table) ^ net/ipv4/netfilter/ip_tables.c:1773:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void ipt_unregister_table(struct net *net, struct xt_table *table) ^ static 1 warning generated. vim +/ipt_unregister_table +1773 net/ipv4/netfilter/ip_tables.c 1772 > 1773 void ipt_unregister_table(struct net *net, struct xt_table *table) 1774 { 1775 __ipt_unregister_table(net, table); 1776 } 1777 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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