Re: [PATCH 6.12 162/265] selftests: mptcp: join: check removing signal+subflow endp

Matthieu Baerts
2026-03-13T09:54:11Z

Hi Greg,

On 12/03/2026 21:09, Greg Kroah-Hartman wrote:
> 6.12-stable review patch. If anyone has any objections, please let me know.
>
> ------------------
>
> From: Matthieu Baerts (NGI0) <matttbe@kernel.org>
>
> commit 1777f349ff41b62dfe27454b69c27b0bc99ffca5 upstream.
>
> This validates the previous commit: endpoints with both the signal and
> subflow flags should always be marked as used even if it was not
> possible to create new subflows due to the MPTCP PM limits.

FYI, this patch adds a new subtest in the MPTCP selftests to validate
that the upstream parent commit -- 579a752464a6 ("mptcp: pm: in-kernel:
always mark signal+subflow endp as used") -- fixes a warning. Except
that this commit had a conflict and is currently not in v6.12. Sasha
sent a version without the conflict (BTW, thank you for that!):

https://lore.kernel.org/20260309153846.1288656-1-sashal@kernel.org

I guess that's probably fine like that because the issue exposed by this
new test is not new, and it will be fixed by the missing patch soon I
suppose. Probably no need to modify this RC, and the fix can wait the
next version, but I prefer to send this message just in case people hit
the issue.

Cheers,
Matt
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