Hi Pavel, I love your patch! Yet something to improve: [auto build test ERROR on net/master] [also build test ERROR on net-next/master klassert-ipsec/master horms-ipvs/master linus/master v5.16 next-20220115] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/0day-ci/linux/commits/Pavel-Begunkov/udp-optimisation/... base: https://git.kernel.org/pub/scm/linux/kernel/git/davem/net.git dd3ca4c5184ea98e40acb8eb293d85b88ea04ee2 config: s390-randconfig-r044-20220113 (https://download.01.org/0day-ci/archive/20220115/202201152052.qh2PH81Z-lk...) compiler: s390-linux-gcc (GCC) 11.2.0 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 # https://github.com/0day-ci/linux/commit/e90b74891027be09208b388b5ff57657f... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Pavel-Begunkov/udp-optimisation/20220111-092653 git checkout e90b74891027be09208b388b5ff57657fce17c4a # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=s390 SHELL=/bin/bash If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>, old ones prefixed by <<): --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org