linux-kernel - Re: mainline build failure due to f1e4c916f97f ("drm/edid: add EDID block count and size helpers")

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Date:   Sat, 28 May 2022 11:07:59 +0100
From:   Sudip Mukherjee <sudipm.mukherjee@...il.com>
To:     Linus Torvalds <torvalds@...ux-foundation.org>
Cc:     Jani Nikula <jani.nikula@...el.com>,
        Ville Syrjälä 
        <ville.syrjala@...ux.intel.com>,
        Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Maxime Ripard <mripard@...nel.org>,
        Thomas Zimmermann <tzimmermann@...e.de>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        dri-devel <dri-devel@...ts.freedesktop.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: mainline build failure due to f1e4c916f97f ("drm/edid: add EDID
 block count and size helpers")

Hi Linus,

On Fri, May 27, 2022 at 06:04:14PM -0700, Linus Torvalds wrote:
> On Fri, May 27, 2022 at 4:41 PM Sudip Mukherjee
> <sudipm.mukherjee@...il.com> wrote:
> >
> > I just tested with various values, sizeof(*edid) is 144 bytes at that place.
> 
> Hmm. What compiler do you have? Because it seems very broken.

I am using gcc version 11.3.1 20220517 (GCC). And I am not just building
spear3xx_defconfig, I am building all the arm configs with the same
compiler in the same setup and only spear3xx_defconfig started failing.
I am attaching a build summary report generated on 26th May, all arm builds
passed, even allmodconfig.

> 

<snip>

> 
> But it obviously doesn't happen for me or for most other people, so
> it's something in your setup. Unusual compiler?

And, just to verify its not my setup or the compiler I use, I took a fresh
Debian Bullseye docker, installed 'gcc-arm-linux-gnueabi' from Debian and I see
the same build failure with spear3xx_defconfig. This gcc from Debian Bullseye
is: gcc version 10.2.1 20210110 (Debian 10.2.1-6).

--
Regards
Sudip

View attachment "report_babf0bb978e3.log" of type "text/plain" (2712 bytes)