linux-kernel - Re: [kbuild-all] Re: make[2]: *** [arch/powerpc/Makefile.postlink:31: vmlinux] Error 1

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Date:   Fri, 6 Aug 2021 18:30:37 +0800
From:   "Chen, Rong A" <rong.a.chen@...el.com>
To:     Randy Dunlap <rdunlap@...radead.org>,
        kernel test robot <lkp@...el.com>,
        Feng Tang <feng.tang@...el.com>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
        Masahiro Yamada <masahiroy@...nel.org>,
        Michael Ellerman <mpe@...erman.id.au>
Subject: Re: [kbuild-all] Re: make[2]: *** [arch/powerpc/Makefile.postlink:31:
 vmlinux] Error 1



On 8/6/2021 3:25 AM, Randy Dunlap wrote:
> On 8/5/21 3:28 AM, Chen, Rong A wrote:
>>
>>
>> On 8/4/2021 11:10 AM, Randy Dunlap wrote:
>>> On 7/30/21 1:29 AM, kernel test robot wrote:
>>>> tree: 
>>>> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 
>>>> master
>>>> head:   764a5bc89b12b82c18ce7ca5d7c1b10dd748a440
>>>> commit: cf536e185869d4815d506e777bcca6edd9966a6e Makefile: extend 
>>>> 32B aligned debug option to 64B aligned
>>>> date:   10 weeks ago
>>>> config: powerpc64-randconfig-c023-20210730 (attached as .config)
>>>> compiler: powerpc-linux-gcc (GCC) 10.3.0
>>>> 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://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=cf536e185869d4815d506e777bcca6edd9966a6e 
>>>>
>>>>          git remote add linus 
>>>> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
>>>>          git fetch --no-tags linus master
>>>>          git checkout cf536e185869d4815d506e777bcca6edd9966a6e
>>>>          # save the attached .config to linux build tree
>>>>          COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-10.3.0 
>>>> make.cross ARCH=powerpc64
>>>>
>>>> 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 >>):
>>>>
>>>>>> make[2]: *** [arch/powerpc/Makefile.postlink:31: vmlinux] Error 1
>>>>
>>>> ---
>>>
>>> Hi ktr/lkp,
>>>
>>> This is not "All errors". I suggest that you improve your output by
>>> (also) grepping for "ERROR:", so that the following lines would be
>>> included here:
>>>
>>> ERROR: start_text address is c000000000000200, should be 
>>> c000000000000100
>>> ERROR: try to enable LD_HEAD_STUB_CATCH config option
>>> ERROR: see comments in arch/powerpc/tools/head_check.sh
>>
>> Hi Randy,
>>
>> Thanks for the advice, the "ERROR:" lines weren't redirected to 
>> stderr, so the bot didn't notice them, it looks difficult to change 
>> the output.
> 
> Hi Rong,
> 
> So 0day bot only checks stderr for errors?

yes, as far as it goes.

Best Regards,
Rong Chen

> That is almost reasonable (IMO).
> 
> Michael, in the file arch/powerpc/tools/head_check.sh,
> what do you think about redirecting all of the ERROR: lines
> to stdout (echo "..." >&2)?
> 
> 
>> Best Regards,
>> Rong Chen
>>
>>>
>>>
>>> and yes, enabling LD_HEAD_STUB_CATCH does fix this build error.
> 
> 
> 
>>> thanks.
>