Re: [PATCH v4] Makefile.compiler: replace cc-ifversion with compiler-specific macros

From: Masahiro Yamada <masahiroy@kernel.org>
To: Shreeya Patel <shreeya.patel@collabora.com>
Cc: "Linux regressions mailing list" <regressions@lists.linux.dev>,
	"Greg KH" <gregkh@linuxfoundation.org>,
	"Maksim Panchenko" <maks@meta.com>,
	"Ricardo Cañuelo" <ricardo.canuelo@collabora.com>,
	"Michal Marek" <michal.lkml@markovi.net>,
	"Linux Kernel Mailing List" <linux-kernel@vger.kernel.org>,
	clang-built-linux <llvm@lists.linux.dev>,
	"Bill Wendling" <morbo@google.com>,
	"Nathan Chancellor" <nathan@kernel.org>,
	"gustavo.padovan@collabora.com" <gustavo.padovan@collabora.com>,
	"Guillaume Charles Tucker" <guillaume.tucker@collabora.com>,
	denys.f@collabora.com,
	"Nick Desaulniers" <ndesaulniers@google.com>,
	kernelci@lists.linux.dev,
	"Collabora Kernel ML" <kernel@collabora.com>
Subject: Re: [PATCH v4] Makefile.compiler: replace cc-ifversion with compiler-specific macros
Date: Sat, 30 Sep 2023 19:24:11 +0900	[thread overview]
Message-ID: <CAK7LNAQCNVHg=brV-iPL__HAhoNtAKzCiiG2M3Q9jkMvTnrbog@mail.gmail.com> (raw)
In-Reply-To: <b31cae57-89ab-eb8b-1085-1d7476735d58@collabora.com>

On Fri, Sep 15, 2023 at 6:33 PM Shreeya Patel
<shreeya.patel@collabora.com> wrote:
>
> On 11/09/23 15:35, Thorsten Leemhuis wrote:
>
> Hi Thorsten,
>
> > On 29.08.23 13:28, Linux regression tracking (Thorsten Leemhuis) wrote:
> >> On 11.07.23 13:16, Shreeya Patel wrote:
> >>> On 10/07/23 17:39, Linux regression tracking (Thorsten Leemhuis) wrote:
> >>>> Hi, Thorsten here, the Linux kernel's regression tracker. Top-posting
> >>>> for once, to make this easily accessible to everyone.
> >>>>
> >>>> Shreeya Patel, Masahiro Yamada: what's the status of this? Was any
> >>>> progress made to address this? Or is this maybe (accidentally?) fixed
> >>>> with 6.5-rc1?
> >>> I still see the regression happening so it doesn't seem to be fixed.
> >>> https://linux.kernelci.org/test/case/id/64ac675a8aebf63753bb2a8c/
> >>>
> >>> Masahiro had submitted a fix for this issue here.
> >>>
> >>> https://lore.kernel.org/lkml/ZJEni98knMMkU%2Fcl@buildd.core.avm.de/T/#t
> >>>
> >>> But I don't see any movement there. Masahiro, are you planning to send a
> >>> v2 for it?
> >> That was weeks ago and we didn't get a answer. :-/ Was this fixed in
> >> between? Doesn't look like it from here, but I might be missing something.
> > Still no reply. :-/
> >
> > Shreeya Patel, does the problem still happen with 6.6-rc1 and do you
> > still want to see it fixed? In that case our only option to get things
> > rolling again might be to involve Linus, unless someone in the CC list
> > has a idea to resolve this. Might also be good to know if reverting the
> > culprit fixes the problem.
>
>
> I don't see this issue happening on 6.6-rc1 kernel and it was only last
> seen in 6.5 kernel.
> But there was no fix added to Kbuild in the meantime so not sure which
> commit really fixed this issue.
>
> For now we can mark this as resolved and I'll keep an eye on the future
> test results to see if this pops up again.
>
>
> Thanks,
> Shreeya Patel
>
> #regzbot resolve: Fixed in 6.6-rc1 kernel, fix commit is unknown.

Not fixed in 6.6-rc1.

I submitted a patch to shoot the root cause.

https://lore.kernel.org/all/20230925110023.1796789-1-masahiroy@kernel.org/

Now it is in Russell's patch tracker.

-- 
Best Regards
Masahiro Yamada