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 --]
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next prev parent 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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