From: Paolo Abeni <[email protected]>
Date: Mon, 3 Aug 2020 18:40:39 +0200
> In case of memory pressure, mptcp_sendmsg() may call
> sk_stream_wait_memory() after succesfully xmitting some
> bytes. If the latter fails we currently return to the
> user-space the error code, ignoring the succeful xmit.
>
> Address the issue always checking for the xmitted bytes
> before mptcp_sendmsg() completes.
>
> Fixes: f296234c98a8 ("mptcp: Add handling of incoming MP_JOIN requests")
> Reviewed-by: Matthieu Baerts <[email protected]>
> Signed-off-by: Paolo Abeni <[email protected]>
Applied and queued up for v5.7+ -stable, thank you.
