Re: Patch "mptcp: Fix proto fallback detection with BPF" has been added to the 6.1-stable tree

Re: Patch "mptcp: Fix proto fallback detection with BPF" has been added to the 6.1-stable tree

[Matthieu Baerts]

Hi Greg, Sasha, Jiayuan,

On 27/11/2025 14:41, gregkh@linuxfoundation.org wrote:
> 
> This is a note to let you know that I've just added the patch titled
> 
>     mptcp: Fix proto fallback detection with BPF
> 
> to the 6.1-stable tree which can be found at:
>     http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
> 
> The filename of the patch is:
>      mptcp-fix-proto-fallback-detection-with-bpf.patch
> and it can be found in the queue-6.1 subdirectory.
> 
> If you, or anyone else, feels it should not be added to the stable tree,
> please let <stable@vger.kernel.org> know about it.

@Sasha: thank you for having resolved the conflicts for this patch (and
many others related to MPTCP recently). Sadly, it is causing troubles.

@Greg/Sasha: is it possible to remove it from 6.1, 5.15 and 5.10 queues
please?
(The related patch in 6.6 and above is OK)

@Jiayuan: did you not specify you initially saw this issue on a v6.1
kernel? By chance, do you already have a fix for that version?

Cheers,
Matt
-- 
Sponsored by the NGI0 Core fund.

Re: Patch "mptcp: Fix proto fallback detection with BPF" has been added to the 6.1-stable tree

[Sasha Levin]

On Fri, Nov 28, 2025 at 06:03:38PM +0100, Matthieu Baerts wrote:
>Hi Greg, Sasha, Jiayuan,
>
>On 27/11/2025 14:41, gregkh@linuxfoundation.org wrote:
>>
>> This is a note to let you know that I've just added the patch titled
>>
>>     mptcp: Fix proto fallback detection with BPF
>>
>> to the 6.1-stable tree which can be found at:
>>     http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
>>
>> The filename of the patch is:
>>      mptcp-fix-proto-fallback-detection-with-bpf.patch
>> and it can be found in the queue-6.1 subdirectory.
>>
>> If you, or anyone else, feels it should not be added to the stable tree,
>> please let <stable@vger.kernel.org> know about it.
>
>@Sasha: thank you for having resolved the conflicts for this patch (and
>many others related to MPTCP recently). Sadly, it is causing troubles.
>
>@Greg/Sasha: is it possible to remove it from 6.1, 5.15 and 5.10 queues
>please?
>(The related patch in 6.6 and above is OK)

Dropped it from the older trees, thanks!

-- 
Thanks,
Sasha

Re: Patch "mptcp: Fix proto fallback detection with BPF" has been added to the 6.1-stable tree

[Jiayuan Chen]

2025/11/29 01:03, "Matthieu Baerts" <matttbe@kernel.org mailto:matttbe@kernel.org?to=%22Matthieu%20Baerts%22%20%3Cmatttbe%40kernel.org%3E > wrote:


> 
> Hi Greg, Sasha, Jiayuan,
> 
> On 27/11/2025 14:41, gregkh@linuxfoundation.org wrote:
> 
> > 
> > This is a note to let you know that I've just added the patch titled
> >  
> >  mptcp: Fix proto fallback detection with BPF
> >  
> >  to the 6.1-stable tree which can be found at:
> >  http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
> >  
> >  The filename of the patch is:
> >  mptcp-fix-proto-fallback-detection-with-bpf.patch
> >  and it can be found in the queue-6.1 subdirectory.
> >  
> >  If you, or anyone else, feels it should not be added to the stable tree,
> >  please let <stable@vger.kernel.org> know about it.
> > 
> @Sasha: thank you for having resolved the conflicts for this patch (and
> many others related to MPTCP recently). Sadly, it is causing troubles.
> 
> @Greg/Sasha: is it possible to remove it from 6.1, 5.15 and 5.10 queues
> please?
> (The related patch in 6.6 and above is OK)
> 
> @Jiayuan: did you not specify you initially saw this issue on a v6.1
> kernel? By chance, do you already have a fix for that version?
> 

Hi Matthieu,
I’ll send a separate patch for v6.1 immediately — the issue causes a panic in v6.1.