[CRIU] [PATCH bpf-next v1 2/8] bpf: Add bpf_page_to_pfn helper

[kernel test robot]

Hi Kumar,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on bpf-next/master]

url:    https://github.com/0day-ci/linux/commits/Kumar-Kartikeya-Dwivedi/Introduce-BPF-iterators-for-io_uring-and-epoll/20211116-140234
base:   https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master
config: arm-randconfig-r006-20211116 (attached as .config)
compiler: arm-linux-gnueabi-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/567c9b678d5ade1a63c993cfa10394902d4671ca
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Kumar-Kartikeya-Dwivedi/Introduce-BPF-iterators-for-io_uring-and-epoll/20211116-140234
        git checkout 567c9b678d5ade1a63c993cfa10394902d4671ca
        # save the attached .config to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=arm SHELL=/bin/bash

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp at intel.com>

All errors (new ones prefixed by >>):

   arm-linux-gnueabi-ld: kernel/trace/bpf_trace.o: in function `bpf_tracing_func_proto':
>> bpf_trace.c:(.text+0x1930): undefined reference to `bpf_page_to_pfn_proto'
>> arm-linux-gnueabi-ld: bpf_trace.c:(.text+0x1934): undefined reference to `bpf_page_to_pfn_proto'

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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