linux-kernel - Re: [kbuild-all] Re: [linux-stable-rc:linux-5.10.y 4948/4972] tools/testing/selftests/bpf/prog_tests/core_reloc.c:860: undefined reference to `ASSERT

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Date:   Wed, 11 Aug 2021 11:36:51 +0800
From:   "Chen, Rong A" <rong.a.chen@...el.com>
To:     Andrii Nakryiko <andrii.nakryiko@...il.com>,
        kernel test robot <lkp@...el.com>
Cc:     Andrii Nakryiko <andrii@...nel.org>, kbuild-all@...ts.01.org,
        open list <linux-kernel@...r.kernel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Alexei Starovoitov <ast@...nel.org>,
        Sasha Levin <sashal@...nel.org>
Subject: Re: [kbuild-all] Re: [linux-stable-rc:linux-5.10.y 4948/4972]
 tools/testing/selftests/bpf/prog_tests/core_reloc.c:860: undefined reference
 to `ASSERT_FALSE'



On 8/10/2021 11:11 PM, Andrii Nakryiko wrote:
> On Tue, Aug 10, 2021 at 4:25 AM kernel test robot <lkp@...el.com> wrote:
>>
>> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-5.10.y
>> head:   e97bd1e03e6ef58ec47ee7f085f8c14ed6329cf7
>> commit: 183d9ebd449c20658a1aaf580f311140bbc7421d [4948/4972] selftests/bpf: Fix core_reloc test runner
>> config: x86_64-rhel-8.3-kselftests (attached as .config)
>> compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
>> reproduce:
>>          # apt-get install sparse
>>          # sparse version: v0.6.3-348-gf0e6938b-dirty
>>          # https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git/commit/?id=183d9ebd449c20658a1aaf580f311140bbc7421d
>>          git remote add linux-stable-rc https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git
>>          git fetch --no-tags linux-stable-rc linux-5.10.y
>>          git checkout 183d9ebd449c20658a1aaf580f311140bbc7421d
>>          # save the attached .config to linux build tree
>>          make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=x86_64 SHELL=/bin/bash -C tools/testing/selftests/bpf install
>>
>> If you fix the issue, kindly add following tag as appropriate
>> Reported-by: kernel test robot <lkp@...el.com>
>>
>> All errors (new ones prefixed by >>):
>>
>>     /usr/bin/ld: tools/testing/selftests/bpf/core_reloc.test.o: in function `test_core_reloc':
>>>> tools/testing/selftests/bpf/prog_tests/core_reloc.c:860: undefined reference to `ASSERT_FALSE'
>>     collect2: error: ld returned 1 exit status
>> --
>>     /usr/bin/ld: tools/testing/selftests/bpf/no_alu32/core_reloc.test.o: in function `test_core_reloc':
>>>> tools/testing/selftests/bpf/prog_tests/core_reloc.c:860: undefined reference to `ASSERT_FALSE'
>>     collect2: error: ld returned 1 exit status
>>
> 
> ASSERT_FALSE() macro is defined in test_progs.h, which is included
> from core_reloc.c. There must be something wrong about how kernel test
> robot is building selftests/bpf.

Hi Andrii,

The issue was found in a stable branch, and commit 7a2fa70aaffc 
(selftests/bpf: Add remaining ASSERT_xxx() variants) seems not in the 
branch, There are some conflicts that I failed to cherry-pick it to the 
head to test.

Best Regards,
Rong Chen

> 
>>
>> vim +860 tools/testing/selftests/bpf/prog_tests/core_reloc.c
>>
>>     765
>>     766  void test_core_reloc(void)
>>     767  {
>>     768          const size_t mmap_sz = roundup_page(sizeof(struct data));
>>     769          struct bpf_object_load_attr load_attr = {};
>>     770          struct core_reloc_test_case *test_case;
>>     771          const char *tp_name, *probe_name;
>>     772          int err, i, equal;
>>     773          struct bpf_link *link = NULL;
>>     774          struct bpf_map *data_map;
>>     775          struct bpf_program *prog;
>>     776          struct bpf_object *obj;
>>     777          uint64_t my_pid_tgid;
>>     778          struct data *data;
>>     779          void *mmap_data = NULL;
>>     780
> 
> [...]
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