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Message-ID: <6447b32f-abb9-4459-aca5-3d510a66b685@kernel.org>
Date:   Tue, 10 Oct 2023 18:51:15 +0200
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Subject: Re: [PATCH 6.1 000/162] 6.1.57-rc1 review
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To:     Naresh Kamboju <naresh.kamboju@linaro.org>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc:     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, pavel@denx.de,
        jonathanh@nvidia.com, f.fainelli@gmail.com,
        sudipm.mukherjee@gmail.com, srw@sladewatkins.net, rwarsow@gmx.de,
        conor@kernel.org, "David S. Miller" <davem@davemloft.net>,
        David Ahern <dsahern@kernel.org>,
        Eric Dumazet <edumazet@google.com>,
        Jakub Kicinski <kuba@kernel.org>,
        Paolo Abeni <pabeni@redhat.com>,
        Netdev <netdev@vger.kernel.org>, bpf <bpf@vger.kernel.org>,
        MPTCP Upstream <mptcp@lists.linux.dev>
References: <20231009130122.946357448@linuxfoundation.org>
 <CA+G9fYvWCf4fYuQsVLu0NdN+=W73bW1hr1hiokajktNzPFyYtA@mail.gmail.com>
From:   Matthieu Baerts <matttbe@kernel.org>
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Organization: Tessares
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Hi Naresh,

On 09/10/2023 22:43, Naresh Kamboju wrote:
> On Mon, 9 Oct 2023 at 18:46, Greg Kroah-Hartman
> <gregkh@linuxfoundation.org> wrote:
>>
>> This is the start of the stable review cycle for the 6.1.57 release.
>> There are 162 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, 11 Oct 2023 13:00:55 +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-6.1.57-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-6.1.y
>> and the diffstat can be found below.
>>
>> thanks,
>>
>> greg k-h
> 
> 
> The following kernel warnings were noticed several times on arm x15 devices
> running stable-rc 6.1.57-rc1 while running  selftests: net: mptcp_connect.sh
> and netfilter: nft_fib.sh.
> 
> The possible unsafe locking scenario detected.
> 
> FYI,
> Stable-rc/ linux.6.1.y kernel running stable/ linux.6.5.y selftest in this case.
> 
> Reported-by: Linux Kernel Functional Testing <lkft@linaro.org>
> 
> kselftest: Running tests in net/mptcp

Thank you for having reported the issue and having added MPTCP ML in Cc!

Just to avoid confusions: the "WARNING" you shared when running
'mptcp_connect.sh' selftest appeared before creating the first MPTCP
connection. It looks like there is no reference to MPTCP in the
calltraces. Also, because you have the same issue with nft_fib.sh, I
would say that this issue is not linked to MPTCP but rather to a recent
modification in the IPv6 stack.

By chance, did you start a "git bisect" to identify the commit causing
this issue?

Cheers,
Matt
-- 
Tessares | Belgium | Hybrid Access Solutions
www.tessares.net