Hi Joanne, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on bpf-next/master] url: https://github.com/intel-lab-lkp/linux/commits/Joanne-Koong/bpf-Allow-sk_buff-and-xdp_buff-as-valid-kfunc-arg-types/20230128-170947 base: https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master patch link: https://lore.kernel.org/r/20230126233439.3739120-5-joannelkoong%40gmail.com patch subject: [PATCH v8 bpf-next 4/5] bpf: Add xdp dynptrs config: ia64-allyesconfig (https://download.01.org/0day-ci/archive/20230128/202301282216.D4fgHBjZ-lkp@xxxxxxxxx/config) compiler: ia64-linux-gcc (GCC) 12.1.0 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/intel-lab-lkp/linux/commit/ca213ec890479169ac6661c55e4c3eb95b4d8464 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Joanne-Koong/bpf-Allow-sk_buff-and-xdp_buff-as-valid-kfunc-arg-types/20230128-170947 git checkout ca213ec890479169ac6661c55e4c3eb95b4d8464 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=ia64 olddefconfig COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=ia64 SHELL=/bin/bash net/core/ If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): net/core/filter.c:1866:5: warning: no previous prototype for 'bpf_dynptr_from_skb' [-Wmissing-prototypes] 1866 | int bpf_dynptr_from_skb(struct sk_buff *skb, u64 flags, | ^~~~~~~~~~~~~~~~~~~ >> net/core/filter.c:3858:5: warning: no previous prototype for 'bpf_dynptr_from_xdp' [-Wmissing-prototypes] 3858 | int bpf_dynptr_from_xdp(struct xdp_buff *xdp, u64 flags, struct bpf_dynptr_kern *ptr) | ^~~~~~~~~~~~~~~~~~~ vim +/bpf_dynptr_from_xdp +3858 net/core/filter.c 3857 > 3858 int bpf_dynptr_from_xdp(struct xdp_buff *xdp, u64 flags, struct bpf_dynptr_kern *ptr) 3859 { 3860 if (flags) { 3861 bpf_dynptr_set_null(ptr); 3862 return -EINVAL; 3863 } 3864 3865 bpf_dynptr_init(ptr, xdp, BPF_DYNPTR_TYPE_XDP, 0, xdp_get_buff_len(xdp)); 3866 3867 return 0; 3868 } 3869 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests
