Hi Joanne, 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/Joanne-Koong/Add-skb-xdp-dynptrs/20220823-080022 base: https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master config: arm-buildonly-randconfig-r002-20220823 (https://download.01.org/0day-ci/archive/20220824/202208240728.59W00MTW-lkp@xxxxxxxxx/config) compiler: arm-linux-gnueabi-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/a2c8a74d8f0b7fd0b0008dc9bc5ccf9887317f36 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Joanne-Koong/Add-skb-xdp-dynptrs/20220823-080022 git checkout a2c8a74d8f0b7fd0b0008dc9bc5ccf9887317f36 # 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=arm SHELL=/bin/bash If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): arm-linux-gnueabi-ld: kernel/bpf/helpers.o: in function `bpf_dynptr_read': >> helpers.c:(.text+0xb1c): undefined reference to `__bpf_skb_load_bytes' arm-linux-gnueabi-ld: kernel/bpf/helpers.o: in function `bpf_dynptr_write': >> helpers.c:(.text+0xc30): undefined reference to `__bpf_skb_store_bytes' -- 0-DAY CI Kernel Test Service https://01.org/lkp