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From:   Joel Fernandes <joel@joelfernandes.org>
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Subject: Re: [PATCH 6.4 000/227] 6.4.7-rc1 review
Date:   Thu, 27 Jul 2023 09:26:52 -0400
Message-Id: <78722041-D1F7-45FA-BA1C-41B92209BA6C@joelfernandes.org>
References: <ZMJWet00+9yIl/9c@duo.ucw.cz>
Cc:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        stable@vger.kernel.org, patches@lists.linux.dev,
        linux-kernel@vger.kernel.org, torvalds@linux-foundation.org,
        akpm@linux-foundation.org, linux@roeck-us.net, shuah@kernel.org,
        patches@kernelci.org, lkft-triage@lists.linaro.org,
        jonathanh@nvidia.com, f.fainelli@gmail.com,
        sudipm.mukherjee@gmail.com, srw@sladewatkins.net, rwarsow@gmx.de,
        conor@kernel.org, rcu@vger.kernel.org
In-Reply-To: <ZMJWet00+9yIl/9c@duo.ucw.cz>
To:     Pavel Machek <pavel@denx.de>
Precedence: bulk


> On Jul 27, 2023, at 7:35 AM, Pavel Machek <pavel@denx.de> wrote:
>=20
> =EF=BB=BFHi!
>=20
>>> This is the start of the stable review cycle for the 6.4.7 release.
>>> There are 227 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.
>>>=20
>>> Responses should be made by Thu, 27 Jul 2023 10:44:26 +0000.
>>> Anything received after that time might be too late.
>>>=20
>>> The whole patch series can be found in one patch at:
>>>    https://www.kernel.org/pub/linux/kernel/v6.x/stable-review/patch-6.4.=
7-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-6.4.y
>>> and the diffstat can be found below.
>>=20
>> I saw this when running rcutorture, this one happened in the TREE04
>> configuration. This is likely due to the stuttering issues we are discuss=
ing
>> in the other thread. Anyway I am just making a note here while I am
>> continuing to look into it.
>=20
> So is the stuttering new in 6.4.7?

No it is an old feature in RCU torture tests. But is dependent on timing. So=
mething
changed in recent kernels that is making the issues with it more likely. Its=
 hard to bisect as failure sometimes takes hours.

>=20
>> Other than that, all tests pass:
>> Tested-by: Joel Fernandes (Google) <joel@joelfernandes.org>
>=20
> ...or you still believe 6.4.7 is okay to release?

As such, it should be Ok. However naturally I am not happy that the RCU test=
ing
is intermittently failing. These issues have been seen in last several 6.4 s=
table releases
so since those were released, maybe this one can be too?
The fix for stuttering is currently being reviewed.

Thanks,=20

- Joel=20


>=20
> Best regards,
>                                Pavel
> --=20
> DENX Software Engineering GmbH,        Managing Director: Erika Unter
> HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany