[ast:syscall 2/5] ld.lld: error: undefined symbol: bpf_tracing_func_proto

[ast:syscall 2/5] ld.lld: error: undefined symbol: bpf_tracing_func_proto

[kernel test robot]

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tree:   https://git.kernel.org/pub/scm/linux/kernel/git/ast/bpf.git syscall
head:   69cd54d575c628351f0f773967fdf2c834a9da32
commit: 5ddc67dd8532e4e68bf88760e5f0c234cb86d106 [2/5] bpf: Introduce bpf_sys_bpf() helper and program type.
config: x86_64-randconfig-r031-20210225 (attached as .config)
compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project a921aaf789912d981cbb2036bdc91ad7289e1523)
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 x86_64 cross compiling tool for clang build
        # apt-get install binutils-x86-64-linux-gnu
        # https://git.kernel.org/pub/scm/linux/kernel/git/ast/bpf.git/commit/?id=5ddc67dd8532e4e68bf88760e5f0c234cb86d106
        git remote add ast https://git.kernel.org/pub/scm/linux/kernel/git/ast/bpf.git
        git fetch --no-tags ast syscall
        git checkout 5ddc67dd8532e4e68bf88760e5f0c234cb86d106
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 

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

All errors (new ones prefixed by >>):

>> ld.lld: error: undefined symbol: bpf_tracing_func_proto
   >>> referenced by syscall.c:4519 (kernel/bpf/syscall.c:4519)
   >>>               bpf/syscall.o:(syscall_prog_func_proto) in archive kernel/built-in.a

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

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