linux-kernel - Re: [PATCH 4.9 00/78] 4.9.262-rc1 review

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Date:   Sun, 28 Mar 2021 22:37:48 +0200
From:   Ben Hutchings <ben@...adent.org.uk>
To:     Florian Fainelli <f.fainelli@...il.com>,
        gregkh@...uxfoundation.org, linux-kernel@...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, jonathanh@...dia.com,
        stable@...r.kernel.org
Subject: Re: [PATCH 4.9 00/78] 4.9.262-rc1 review

On Mon, 2021-03-15 at 13:42 -0700, Florian Fainelli wrote:
> 
> 
> On 3/15/2021 6:51 AM, gregkh@...uxfoundation.org wrote:
> > From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
> > 
> > This is the start of the stable review cycle for the 4.9.262
> > release.
> > There are 78 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 Wed, 17 Mar 2021 13:51:58 +0000.
> > Anything received after that time might be too late.
> > 
> > The whole patch series can be found in one patch at:
> >         
> > https://www.kernel.org/pub/linux/kernel/v4.x/stable-review/patch-4.9.262-rc1.gz
> > or in the git tree and branch at:
> >         git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-
> > stable-rc.git linux-4.9.y
> > and the diffstat can be found below.
> > 
> > thanks,
> > 
> > greg k-h
> 
> On ARCH_BRCMSTB using 32-bit and 64-bit kernels, still seeing the
> following futex warning, unfortunately simply running the function
> tracers does not allow me to trigger the warning, so I am having a
> hard
> time coming up with a simple reproducer:
[...]

I've now also seen this warning on x86_64 when running Firefox.  I
don't know why it didn't show up in my earlier testing.

I remain sceptical that a cherry-picking approach is going to work for
fixing futexes on 4.9.  But I now have an additional patch series that
seems to fix this warning (and some other older bugs that I didn't
reproduce) and continues to pass the self-tests.  I'll send that along
shortly.

Ben.

-- 
Ben Hutchings
It is a miracle that curiosity survives formal education.
                                                      - Albert Einstein

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