linux-kernel - [jolsa-perf:bpf/tramp_11 16/21] ld.lld: error: undefined symbol: btf_obj

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Date:   Fri, 24 Jun 2022 02:35:12 +0800
From:   kernel test robot <lkp@...el.com>
To:     Jiri Olsa <jolsa@...nel.org>
Cc:     llvm@...ts.linux.dev, kbuild-all@...ts.01.org,
        linux-kernel@...r.kernel.org
Subject: [jolsa-perf:bpf/tramp_11 16/21] ld.lld: error: undefined symbol:
 btf_obj_id

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/jolsa/perf.git bpf/tramp_11
head:   c807110aa605281263da02a78af57847f5c4275e
commit: 314f5bc24b05d05202084c23723269fe449b067b [16/21] bpf: Add bpf_tramp_id object
config: i386-randconfig-a006 (https://download.01.org/0day-ci/archive/20220624/202206240253.PHH3073a-lkp@intel.com/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 46be5faaf03466c3751f8a2882bef5a217e15926)
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://git.kernel.org/pub/scm/linux/kernel/git/jolsa/perf.git/commit/?id=314f5bc24b05d05202084c23723269fe449b067b
        git remote add jolsa-perf https://git.kernel.org/pub/scm/linux/kernel/git/jolsa/perf.git
        git fetch --no-tags jolsa-perf bpf/tramp_11
        git checkout 314f5bc24b05d05202084c23723269fe449b067b
        # 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=i386 SHELL=/bin/bash

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@...el.com>

All errors (new ones prefixed by >>):

>> ld.lld: error: undefined symbol: btf_obj_id
   >>> referenced by trampoline.c:98 (kernel/bpf/trampoline.c:98)
   >>>               vmlinux.o:(bpf_tramp_id_init)

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp