Hi Justin, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on net-next/master] url: https://github.com/0day-ci/linux/commits/Justin-Iurman/Support-for-the-IOAM-Pre-allocated-Trace-with-IPv6/20210311-005727 base: https://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git d310ec03a34e92a77302edb804f7d68ee4f01ba0 config: x86_64-randconfig-a006-20210309 (attached as .config) compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project cd9a69289c7825d54450cb6829fef2c8e0f1963a) 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/f20771586508a195a44298f251d68446c10830ce git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Justin-Iurman/Support-for-the-IOAM-Pre-allocated-Trace-with-IPv6/20210311-005727 git checkout f20771586508a195a44298f251d68446c10830ce # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot All warnings (new ones prefixed by >>): >> net/ipv6/ioam6.c:856:1: warning: unused label 'out_unregister_genl' [-Wunused-label] out_unregister_genl: ^~~~~~~~~~~~~~~~~~~~ 1 warning generated. vim +/out_unregister_genl +856 net/ipv6/ioam6.c 851 852 pr_info("In-situ OAM (IOAM) with IPv6\n"); 853 854 out: 855 return err; > 856 out_unregister_genl: 857 genl_unregister_family(&ioam6_genl_family); 858 out_unregister_pernet_subsys: 859 unregister_pernet_subsys(&ioam6_net_ops); 860 goto out; 861 } 862 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org