linux-kernel - Re: selftests: ftrace: Internal error: Oops: sve_save

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Message-ID: <63e92a6a-9cb7-4272-b524-ccaf997aceb3@sirena.org.uk>
Date:   Thu, 19 Oct 2023 18:25:57 +0100
From:   Mark Brown <broonie@...nel.org>
To:     Naresh Kamboju <naresh.kamboju@...aro.org>
Cc:     Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        open list <linux-kernel@...r.kernel.org>,
        lkft-triage@...ts.linaro.org,
        linux-stable <stable@...r.kernel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Catalin Marinas <catalin.marinas@....com>,
        Steven Rostedt <rostedt@...dmis.org>,
        Masami Hiramatsu <mhiramat@...nel.org>,
        Marc Zyngier <maz@...nel.org>
Subject: Re: selftests: ftrace: Internal error: Oops: sve_save_state

On Thu, Oct 19, 2023 at 09:07:02PM +0530, Naresh Kamboju wrote:
> On Tue, 17 Oct 2023 at 17:52, Mark Brown <broonie@...nel.org> wrote:
> > On Tue, Oct 17, 2023 at 01:34:18PM +0530, Naresh Kamboju wrote:

> > > Following kernel crash noticed while running selftests: ftrace:
> > > ftracetest-ktap on FVP models running stable-rc 6.5.8-rc2.

> > > This is not an easy to reproduce issue and not seen on mainline and next.
> > > We are investigating this report.

> > To confirm have you seen this on other stables as well or is this only
> > v6.5?  For how long have you been seeing this?

> This is only seen on 6.5.8-rc2 and seen only once.
> I have checked on mainline / next and other stable branches and this crash
> is not seen anywhere else.

> However, I will keep checking them on other branches and next and mainline.

I see.  If the bug has never been reproduced I don't think we can draw
any conclusion about which branches are affected, I would be a bit
surprised by something that affects v6.5 only.

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