Re: FAILED: patch "[PATCH] mptcp: pm: re-using ID of unused removed subflows" failed to apply to 5.15-stable tree

[Matthieu Baerts <matttbe@kernel.org>]

Hi Greg,

On 26/08/2024 14:04, gregkh@linuxfoundation.org wrote:
> 
> The patch below does not apply to the 5.15-stable tree.
> If someone wants it applied there, or to any other stable or longterm
> tree, then please email the backport, including the original git commit
> id to <stable@vger.kernel.org>.

Thank you for the notification!

(...)

> ------------------ original commit in Linus's tree ------------------
> 
> From edd8b5d868a4d459f3065493001e293901af758d Mon Sep 17 00:00:00 2001
> From: "Matthieu Baerts (NGI0)" <matttbe@kernel.org>
> Date: Mon, 19 Aug 2024 21:45:21 +0200
> Subject: [PATCH] mptcp: pm: re-using ID of unused removed subflows
> 
> If no subflow is attached to the 'subflow' endpoint that is being
> removed, the addr ID will not be marked as available again.
> 
> Mark the linked ID as available when removing the 'subflow' endpoint if
> no subflow is attached to it.
> 
> While at it, the local_addr_used counter is decremented if the ID was
> marked as being used to reflect the reality, but also to allow adding
> new endpoints after that.
> 
> Fixes: b6c08380860b ("mptcp: remove addr and subflow in PM netlink")

Similar to my previous message linked to the backport of "mptcp: pm:
re-using ID of unused removed ADD_ADDR" where this patch depends on
86e39e04482b ("mptcp: keep track of local endpoint still available for
each msk"), I don't think we need to backport this patch to v5.15.

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