Re: [PATCH mptcp-net] mptcp: reclaim forward-allocated memory on RX path errors
Matthieu Baerts <[email protected]> Tue, 28 Jul 2026 11:11:05 +0200
| Newsgroups | dev.linux.lists.mptcp |
|---|---|
| Organization | NGI0 Core |
| Message-ID | <[email protected]> |
Hi Paolo,
On 27/07/2026 19:36, Paolo Abeni wrote:
> After commit 9db5b3cec4ec ("mptcp: borrow forward memory from subflow"),
> errors in the receive path prior to queueing skbs into the receive
> queue do not trigger forward-allocated memory reclaiming.
>
> Prevent forward memory from growing unboundedly in pathological drop
> scenarios by explicitly reclaiming memory when skbs are dropped.
Thank you for this fix, it looks good to me:
Reviewed-by: Matthieu Baerts (NGI0) <[email protected]>
New patches for t/upstream-net and t/upstream:
- 0ab6395f5005: mptcp: reclaim forward-allocated memory on RX path errors
- Results: c37d29475f67..2668d30f6377 (export-net)
- Results: aca5be746b7a..a596e199424d (export)
Tests are now in progress:
- export-net:
https://github.com/multipath-tcp/mptcp_net-next/commit/ad1a23355073cf3bf47b6f544c590998f451a9d5/checks
- export:
https://github.com/multipath-tcp/mptcp_net-next/commit/288eb31a56e9cd5a843c911085bb7968bb25057f/checks
Cheers,
Matt
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