linux-kernel - Re: [PATCH 5.10 00/63] 5.10.69-rc1 review

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Date:   Fri, 24 Sep 2021 15:11:51 -0700
From:   Florian Fainelli <f.fainelli@...il.com>
To:     Daniel Díaz <daniel.diaz@...aro.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-kernel@...r.kernel.org
Cc:     shuah@...nel.org, patches@...nelci.org,
        lkft-triage@...ts.linaro.org, jonathanh@...dia.com,
        stable@...r.kernel.org, pavel@...x.de, akpm@...ux-foundation.org,
        torvalds@...ux-foundation.org, linux@...ck-us.net
Subject: Re: [PATCH 5.10 00/63] 5.10.69-rc1 review

On 9/24/21 7:12 AM, Daniel Díaz wrote:
> Hello!
> 
> On 9/24/21 7:44 AM, Greg Kroah-Hartman wrote:
>> This is the start of the stable review cycle for the 5.10.69 release.
>> There are 63 patches in this series, all will be posted as a response
>> to this one.  If anyone has any issues with these being applied, please
>> let me know.
>>
>> Responses should be made by Sun, 26 Sep 2021 12:43:20 +0000.
>> Anything received after that time might be too late.
>>
>> The whole patch series can be found in one patch at:
>>     https://www.kernel.org/pub/linux/kernel/v5.x/stable-review/patch-5.10.69-rc1.gz
>>
>> or in the git tree and branch at:
>>     git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git
>> linux-5.10.y
>> and the diffstat can be found below.
>>
>> thanks,
>>
>> greg k-h
> 
> Regressions detected.
> 
> While building Perf for arm, arm64, i386 and x86, all with GCC 11, the
> following error was encountered:
> 
>   util/dso.c: In function 'dso__build_id_equal':
>   util/dso.c:1345:26: error: implicit declaration of function
> 'memchr_inv'; did you mean 'memchr'?
> [-Werror=implicit-function-declaration]
>    1345 |                         !memchr_inv(&dso->bid.data[bid->size], 0,
>         |                          ^~~~~~~~~~
>         |                          memchr
>   cc1: all warnings being treated as errors
>   make[4]: *** [/builds/linux/tools/build/Makefile.build:96:
> /home/tuxbuild/.cache/tuxmake/builds/current/util/dso.o] Error 1

Confirmed, with GCC 8.3 the warning is not a fatal error but we will
fail linking eventually anyway:

/local/stbopt_p/toolchains_303/stbgcc-8.3-0.3/bin/../lib/gcc/aarch64-unknown-linux-gnu/8.3.0/../../../../aarch64-unknown-linux-gnu/bin/ld:
/local/users/fainelli/buildroot/output/arm64/build/linux-custom/tools/perf/perf-in.o:
in function `dso__build_id_equal':
/local/users/fainelli/buildroot/output/arm64/build/linux-custom/tools/perf/util/dso.c:1345:
undefined reference to `memchr_inv'
collect2: error: ld returned 1 exit status
make[4]: *** [Makefile.perf:655:
/local/users/fainelli/buildroot/output/arm64/build/linux-custom/tools/perf/perf]
Error 1
make[3]: *** [Makefile.perf:229: sub-make] Error 2
make[2]: *** [Makefile:70: all] Error 2
make[1]: *** [package/pkg-generic.mk:271:
/local/users/fainelli/buildroot/output/arm64/build/linux-tools/.stamp_built]
Error 2
make: *** [Makefile:27: _all] Error 2

-- 
Florian