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From: kernel test robot <lkp@intel.com>
To: Song Liu <songliubraving@fb.com>,
	bpf@vger.kernel.org, linux-kernel@vger.kernel.org
Cc: kbuild-all@lists.01.org, acme@kernel.org, peterz@infradead.org,
	mingo@redhat.com, kjain@linux.ibm.com, kernel-team@fb.com,
	Song Liu <songliubraving@fb.com>
Subject: Re: [PATCH v2 bpf-next 2/3] bpf: introduce helper bpf_get_branch_snapshot
Date: Fri, 27 Aug 2021 17:28:51 +0800	[thread overview]
Message-ID: <202108271742.khf29aRH-lkp@intel.com> (raw)
In-Reply-To: <20210826221306.2280066-3-songliubraving@fb.com>

[-- Attachment #1: Type: text/plain, Size: 1885 bytes --]

Hi Song,

I love your patch! Yet something to improve:

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

url:    https://github.com/0day-ci/linux/commits/Song-Liu/bpf-introduce-bpf_get_branch_snapshot/20210827-061705
base:   https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master
config: arm64-defconfig (attached as .config)
compiler: aarch64-linux-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/ad355675cf08d95b3f5171b681420cfc8e2f1b7e
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Song-Liu/bpf-introduce-bpf_get_branch_snapshot/20210827-061705
        git checkout ad355675cf08d95b3f5171b681420cfc8e2f1b7e
        # 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=arm64 SHELL=/bin/bash

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 >>):

   aarch64-linux-ld: kernel/bpf/trampoline.o: in function `__bpf_prog_enter':
>> trampoline.c:(.text+0x61c): undefined reference to `bpf_perf_branch_snapshot'
   aarch64-linux-ld: kernel/bpf/trampoline.o: relocation R_AARCH64_ADR_PREL_PG_HI21 against symbol `bpf_perf_branch_snapshot' which may bind externally can not be used when making a shared object; recompile with -fPIC
   trampoline.c:(.text+0x61c): dangerous relocation: unsupported relocation
>> aarch64-linux-ld: trampoline.c:(.text+0x624): undefined reference to `bpf_perf_branch_snapshot'

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

[-- Attachment #2: .config.gz --]
[-- Type: application/gzip, Size: 55207 bytes --]

  reply	other threads:[~2021-08-27  9:30 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-08-26 22:13 [PATCH v2 bpf-next 0/3] bpf: introduce bpf_get_branch_snapshot Song Liu
2021-08-26 22:13 ` [PATCH v2 bpf-next 1/3] perf: enable branch record for software events Song Liu
2021-08-30 10:22   ` Peter Zijlstra
2021-08-30 15:25     ` Song Liu
2021-08-30 16:06       ` Peter Zijlstra
2021-08-30 16:36         ` Song Liu
2021-09-01 17:09           ` Peter Zijlstra
2021-08-30 17:41     ` Song Liu
2021-08-30 18:07       ` Peter Zijlstra
2021-09-01 17:12         ` Peter Zijlstra
2021-09-04 23:01           ` Josh Poimboeuf
2021-08-30 10:43   ` Peter Zijlstra
2021-08-30 16:06     ` Song Liu
2021-08-26 22:13 ` [PATCH v2 bpf-next 2/3] bpf: introduce helper bpf_get_branch_snapshot Song Liu
2021-08-27  9:28   ` kernel test robot [this message]
2021-08-27 15:10   ` kernel test robot
2021-08-30 10:47     ` Peter Zijlstra
2021-08-26 22:13 ` [PATCH v2 bpf-next 3/3] selftests/bpf: add test for bpf_get_branch_snapshot Song Liu

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