linux-kernel - Re: linux-next: build failure after merge of the perf tree

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Message-ID: <29e096e8-4ede-df66-4606-4bd0e5bda755@arm.com>
Date:   Wed, 7 Sep 2022 08:01:34 +0530
From:   Anshuman Khandual <anshuman.khandual@....com>
To:     Stephen Rothwell <sfr@...b.auug.org.au>,
        Arnaldo Carvalho de Melo <arnaldo.melo@...il.com>
Cc:     Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux Next Mailing List <linux-next@...r.kernel.org>
Subject: Re: linux-next: build failure after merge of the perf tree



On 9/7/22 00:35, Stephen Rothwell wrote:
> Hi all,
> 
> On Wed, 31 Aug 2022 08:34:52 +1000 Stephen Rothwell <sfr@...b.auug.org.au> wrote:
>>
>> After merging the perf tree, today's linux-next build (native perf)
>> failed like this:
>>
>> In file included from /usr/include/stdio.h:866,
>>                  from /home/sfr/next/next/tools/perf/util/branch.h:9,
>>                  from util/branch.c:2:
>> In function 'fprintf',
>>     inlined from 'branch_type_stat_display' at util/branch.c:152:4:
>> /usr/include/powerpc64le-linux-gnu/bits/stdio2.h:105:10: error: '%8s' directive argument is null [-Werror=format-overflow=]
>>   105 |   return __fprintf_chk (__stream, __USE_FORTIFY_LEVEL - 1, __fmt,
>>       |          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>>   106 |                         __va_arg_pack ());
>>       |                         ~~~~~~~~~~~~~~~~~
>> cc1: all warnings being treated as errors
>>
>> Presumably caused by commit
>>
>>   9781e500dcb8 ("perf branch: Extend branch type classification")
>>
>> "native" here is PowerPC64 LE.
>> $ gcc --version
>> gcc (Debian 11.2.0-10) 11.2.0
>>
>> I have used the perf tree from next-20220830 for today.
> 
> I am still seeing this build failure.

But did you apply the fix patch from Arnaldo that removes -Wno-format-overflow
compiler option for the file util/branch.c ?

https://lore.kernel.org/all/YxJBh3wvAGol+Ekq@kernel.org/

- Anshuman