Hi Daniel, Thank you for the patch! Yet something to improve: [auto build test ERROR on bpf-next/master] url: https://github.com/intel-lab-lkp/linux/commits/Daniel-Xu/ip-frags-Return-actual-error-codes-from-ip_check_defrag/20230228-035449 base: https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master patch link: https://lore.kernel.org/r/bce083a4293eefb048a700b5a6086e8d8c957700.1677526810.git.dxu%40dxuuu.xyz patch subject: [PATCH bpf-next v2 5/8] bpf: net: ipv6: Add bpf_ipv6_frag_rcv() kfunc config: i386-defconfig (https://download.01.org/0day-ci/archive/20230228/202302281646.GYE1qnGb-lkp@xxxxxxxxx/config) compiler: gcc-11 (Debian 11.3.0-8) 11.3.0 reproduce (this is a W=1 build): # https://github.com/intel-lab-lkp/linux/commit/be4610312351d4a658435bd4649a3a830322396d git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Daniel-Xu/ip-frags-Return-actual-error-codes-from-ip_check_defrag/20230228-035449 git checkout be4610312351d4a658435bd4649a3a830322396d # save the config file mkdir build_dir && cp config build_dir/.config make W=1 O=build_dir ARCH=i386 olddefconfig make W=1 O=build_dir ARCH=i386 SHELL=/bin/bash If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Link: https://lore.kernel.org/oe-kbuild-all/202302281646.GYE1qnGb-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>): ld: net/ipv6/af_inet6.o: in function `inet6_init': >> af_inet6.c:(.init.text+0x22a): undefined reference to `register_ipv6_reassembly_bpf' -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests
