linux-kernel - Re: [PATCH 6.6 00/76] 6.6.85-rc2 review

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Message-ID: <CA+G9fYtdg6OopeUQWkVmW9CYoprtqzWVTQfaoaY1vUtXKEXD2Q@mail.gmail.com>
Date: Fri, 28 Mar 2025 20:12:45 +0530
From: Naresh Kamboju <naresh.kamboju@...aro.org>
To: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: stable@...r.kernel.org, patches@...ts.linux.dev, 
	linux-kernel@...r.kernel.org, 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, f.fainelli@...il.com, sudipm.mukherjee@...il.com, 
	srw@...dewatkins.net, rwarsow@....de, conor@...nel.org, hargar@...rosoft.com, 
	broonie@...nel.org, Johannes Weiner <hannes@...xchg.org>, Michal Hocko <mhocko@...nel.org>, 
	Roman Gushchin <roman.gushchin@...ux.dev>, Cgroups <cgroups@...r.kernel.org>, 
	linux-mm <linux-mm@...ck.org>, Shakeel Butt <shakeelb@...gle.com>
Subject: Re: [PATCH 6.6 00/76] 6.6.85-rc2 review

On Fri, 28 Mar 2025 at 17:14, Naresh Kamboju <naresh.kamboju@...aro.org> wrote:
>
> On Wed, 26 Mar 2025 at 21:16, Greg Kroah-Hartman
> <gregkh@...uxfoundation.org> wrote:
> >
> > This is the start of the stable review cycle for the 6.6.85 release.
> > There are 76 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 Fri, 28 Mar 2025 15:43:33 +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/v6.x/stable-review/patch-6.6.85-rc2.gz
> > or in the git tree and branch at:
> >         git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-6.6.y
> > and the diffstat can be found below.
> >
> > thanks,
> >
> > greg k-h
>
> Regressions on arm64 devices cpu hotplug tests failed with gcc-13 and
> clang-20 the stable-rc 6.6.85-rc2
>
> These regressions are the same as stable-rc 6.1 cpu hotplug regressions.
>
> First seen on the 6.6.85-rc2
> Good: v6.6.83
> Bad: 6.6.85-rc2

I have reverted this patch and confirms that reported regressions fixed,
  memcg: drain obj stock on cpu hotplug teardown
  commit 9f01b4954490d4ccdbcc2b9be34a9921ceee9cbb upstream.

-  Naresh