Re: [PATCH bpf-next 03/10] bpf: Support bpf_dynptr-typed map key for bpf syscall

[kernel test robot <lkp@xxxxxxxxx>]

Hi Hou,

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/Hou-Tao/Add-support-for-qp-trie-map/20220917-231450
base:   https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master
config: arm-randconfig-r016-20220917 (https://download.01.org/0day-ci/archive/20220918/202209180234.jN58ZaBL-lkp@xxxxxxxxx/config)
compiler: clang version 16.0.0 (https://github.com/llvm/llvm-project 791a7ae1ba3efd6bca96338e10ffde557ba83920)
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
        # install arm cross compiling tool for clang build
        # apt-get install binutils-arm-linux-gnueabi
        # https://github.com/intel-lab-lkp/linux/commit/1995ae6874ef9089b4eee12c00ba9c5af264b8bc
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Hou-Tao/Add-support-for-qp-trie-map/20220917-231450
        git checkout 1995ae6874ef9089b4eee12c00ba9c5af264b8bc
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang 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 >>):

>> ld.lld: error: undefined symbol: __get_user_bad
   >>> referenced by syscall.c:1368 (kernel/bpf/syscall.c:1368)
   >>>               bpf/syscall.o:(bpf_copy_to_dynptr_ukey) in archive kernel/built-in.a

-- 
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https://01.org/lkp