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Message-ID: <CAHk-=wiTzjgRRPmfkwOr89uMuk5wdoG_6edMAnEdubX9bq8OSw@mail.gmail.com>
Date: Thu, 10 Aug 2023 12:36:41 -0700
From: Linus Torvalds <torvalds@...ux-foundation.org>
To: Daniel Díaz <daniel.diaz@...aro.org>
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
stable@...r.kernel.org, patches@...ts.linux.dev,
linux-kernel@...r.kernel.org, akpm@...ux-foundation.org,
linux@...ck-us.net, shuah@...nel.org, patches@...nelci.org,
lkft-triage@...ts.linaro.org, pavel@...x.de, jonathanh@...dia.com,
f.fainelli@...il.com, sudipm.mukherjee@...il.com,
srw@...dewatkins.net, rwarsow@....de, conor@...nel.org,
lyude@...hat.com
Subject: Re: [PATCH 4.19 000/323] 4.19.291-rc1 review
On Thu, 10 Aug 2023 at 12:28, Daniel Díaz <daniel.diaz@...aro.org> wrote:
>
> Two new warnings are introduced on x86_64 with GCC-8 (defconfig):
>
> -----8<-----
> drivers/gpu/drm/drm_edid.o: warning: objtool:
> drm_mode_std.isra.34()+0xbc: return with modified stack frame
> drivers/gpu/drm/drm_edid.o: warning: objtool:
> drm_mode_std.isra.34()+0x0: stack state mismatch: cfa1=7+112 cfa2=7+8
> ----->8-----
>
> Bisection points to the quoted commit ("drm/edid: Fix uninitialized
> variable in drm_cvt_modes()"), 991fcb77f490 upstream. Reverting makes
> the warnings disappear.
Bah. Stable should pick up commit d652d5f1eeeb ("drm/edid: fix objtool
warning in drm_cvt_modes()") from mainline too.
Sadly it didn't have a 'Fixes:' tag, so it didn't get picked up
automatically. My bad.
Although it's not like the commits it fixes were actually ever marked
for stable either. I guess commit 3f649ab728cd ("treewide: Remove
uninitialized_var() usage") got picked up as some kind of "make it
easier to apply other patches" thing.
Linus
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