Hi Xin, Thank you for the patch! Yet something to improve: [auto build test ERROR on net-next/master] url: https://github.com/0day-ci/linux/commits/Xin-Long/sctp-Implement-RFC6951-UDP-Encapsulation-of-SCTP/20201008-175211 base: https://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git 9faebeb2d80065926dfbc09cb73b1bb7779a89cd config: arm-keystone_defconfig (attached as .config) compiler: arm-linux-gnueabi-gcc (GCC) 9.3.0 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/55d6ef371ddfab66c7767da14b490f7576262f1a git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Xin-Long/sctp-Implement-RFC6951-UDP-Encapsulation-of-SCTP/20201008-175211 git checkout 55d6ef371ddfab66c7767da14b490f7576262f1a # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arm If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): arm-linux-gnueabi-ld: net/sctp/protocol.o: in function `sctp_udp_sock_start': >> protocol.c:(.text+0x1084): undefined reference to `udp_sock_create4' >> arm-linux-gnueabi-ld: protocol.c:(.text+0x10b0): undefined reference to `setup_udp_tunnel_sock' arm-linux-gnueabi-ld: net/sctp/protocol.o: in function `sctp_udp_sock_stop': >> protocol.c:(.text+0x1108): undefined reference to `udp_tunnel_sock_release' --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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