From: Sasha Levin <sashal@kernel.org>
To: Matthieu Baerts <matttbe@kernel.org>
Cc: stable@vger.kernel.org, Paolo Abeni <pabeni@redhat.com>,
Jakub Kicinski <kuba@kernel.org>
Subject: Re: [PATCH 6.18.y 1/2] mptcp: fix missing wakeups in edge scenarios
Date: Tue, 16 Jun 2026 08:33:34 -0400 [thread overview]
Message-ID: <ajFCnqgA-0upNshY@laps> (raw)
In-Reply-To: <a511d4e7-3b0c-41f3-830e-b32e27f9fe5a@kernel.org>
On Tue, Jun 16, 2026 at 01:01:34PM +0200, Matthieu Baerts wrote:
>Hi Sasha,
>
>On 16/06/2026 02:19, Sasha Levin wrote:
>> From: Paolo Abeni <pabeni@redhat.com>
>>
>> [ Upstream commit 9d8d28738f24b75616d6ca7a27cb4aed88520343 ]
>>
>> The mptcp_recvmsg() can fill MPTCP socket receive queue via
>> mptcp_move_skbs(), but currently does not try to wakeup any listener,
>> because the same process is going to check the receive queue soon.
>>
>> When multiple threads are reading from the same fd, the above can
>> cause stall. Add the missing wakeup.
>>
>> Fixes: 6771bfd9ee24 ("mptcp: update mptcp ack sequence from work queue")
>> Cc: stable@vger.kernel.org
>> Signed-off-by: Paolo Abeni <pabeni@redhat.com>
>> Reviewed-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
>> Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
>> Link: https://patch.msgid.link/20260602-net-mptcp-misc-fixes-7-1-rc7-v2-1-856831229976@kernel.org
>> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
>> Signed-off-by: Sasha Levin <sashal@kernel.org>
>
>Thank you for this patch. The subject shows "1/2", suggesting a 2nd
>patch is expected, but I don't see any, and it looks like no 2nd patch
>is needed here to resolve conflicts.
>
>So just to be sure: no patch 2/2 expected, right?
Yes, sorry, human error...
--
Thanks,
Sasha
prev parent reply other threads:[~2026-06-16 12:33 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-06-15 14:23 FAILED: patch "[PATCH] mptcp: fix missing wakeups in edge scenarios" failed to apply to 6.18-stable tree gregkh
2026-06-16 0:19 ` [PATCH 6.18.y 1/2] mptcp: fix missing wakeups in edge scenarios Sasha Levin
2026-06-16 11:01 ` Matthieu Baerts
2026-06-16 12:33 ` Sasha Levin [this message]
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