linux-kernel - Re: [PATCH 5.10 00/73] 5.10.213-rc1 review

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Date: Mon, 25 Mar 2024 00:55:35 -0600
From: Daniel Díaz <daniel.diaz@...aro.org>
To: Sasha Levin <sashal@...nel.org>, linux-kernel@...r.kernel.org,
 stable@...r.kernel.org
Cc: torvalds@...ux-foundation.org, akpm@...ux-foundation.org,
 linux@...ck-us.net, shuah@...nel.org, patches@...nelci.org,
 lkft-triage@...ts.linaro.org, pavel@...x.de, tzimmermann@...e.de
Subject: Re: [PATCH 5.10 00/73] 5.10.213-rc1 review

Hello!

On 13/03/24 10:45 a. m., Sasha Levin wrote:
> This is the start of the stable review cycle for the 5.10.213 release.
> There are 73 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 Fri Mar 15 04:46:39 PM UTC 2024.
> Anything received after that time might be too late.
> 
> The whole patch series can be found in one patch at:
>          https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git/patch/?id=linux-5.10.y&id2=v5.10.212
> 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,
> Sasha

We're seeing regressions while building PowerPC with GCC 8 and 12 with ppc6xx_defconfig:

-----8<-----
   /builds/linux/drivers/macintosh/via-pmu-backlight.c:22:20: error: 'FB_BACKLIGHT_LEVELS' undeclared here (not in a function)
      22 | static u8 bl_curve[FB_BACKLIGHT_LEVELS];
         |                    ^~~~~~~~~~~~~~~~~~~
   In file included from /builds/linux/include/linux/kernel.h:15,
                    from /builds/linux/include/asm-generic/bug.h:20,
                    from /builds/linux/arch/powerpc/include/asm/bug.h:109,
                    from /builds/linux/include/linux/bug.h:5,
                    from /builds/linux/include/linux/thread_info.h:12,
                    from /builds/linux/arch/powerpc/include/asm/ptrace.h:264,
                    from /builds/linux/drivers/macintosh/via-pmu-backlight.c:11:
----->8-----

Bisection points to:

   commit ee550f669e91c4cb0c884f38aa915497bc201585
   Author: Thomas Zimmermann <tzimmermann@...e.de>
   Date:   Wed Mar 6 13:28:20 2024 +0100
       arch/powerpc: Remove <linux/fb.h> from backlight code


Reverting that commit made the build pass again.

Reproducer:

   tuxmake --runtime podman --target-arch powerpc --toolchain gcc-12 --kconfig ppc6xx_defconfig

Reported-by: Linux Kernel Functional Testing <lkft@...aro.org>


Greetings!

Daniel Díaz
daniel.diaz@...aro.org