From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 43ABD18EB0 for ; Tue, 16 Jun 2026 12:33:36 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1781613217; cv=none; b=gzKYFZWI8wpDoVRbZZyJN1D+3kRZ+Hm48guEKWcpWr8KOCadvRJH1OIbFBUaFXFpgJSWNgHbXTQrauWVWslf077EszJNTlyIaWdn7Q7Okqsu22jm/LXhFx/NUz0mmK2s64z4xh0dkhJ0UyYAag+c0fAVfNQWzhFolkKkyysgsV8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1781613217; c=relaxed/simple; bh=pP/6N83U74VjqkF4C5mfZhgqsr2GfrlZ9A/Wx1S1qSM=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=B7dbYnDhvYqdqX3Emmr6u1HG+4r3bd3AD1FUODC0ZQ/p1yitgUxKx9yVc8xFBJk0MZboDB6gYQibTIZMKH/lTYS50W4cpn4LxvkrFsczmRhiByrraB0SPgJ2rq+ebDyQo4u9otR1lGER6GgJEBRD0BEWkE5pKmKe3+rBfQwdwPQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=nfihxwc1; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="nfihxwc1" Received: by smtp.kernel.org (Postfix) with ESMTPSA id B46211F000E9; Tue, 16 Jun 2026 12:33:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1781613216; bh=Id9yBHu3CT8/NqxH8Dpt0XSrySuOcaeUeQN3N5/9EPE=; h=Date:From:To:Cc:Subject:References:In-Reply-To; b=nfihxwc1hlWeiFclq+ycdIvmoyvLmeoOwMJG0vMV8xYC5VJhDfxEnK+S8blApelPB 65Yr/Qd2gEJB2rhY3E7GK17EK/SCRE3VReCsAnDmIZMk+ZCn+yM5WqoWZ54QGM9Sht wCcA9qx+ky+MBrQO6gORI5Yhz4g5fe9gwZa/i4ZuB2Rqddv0e+qY/7SQQIQg5pQ+Ro tTRaALLRIAvl0+JRreaO0CxyP55plozBLVsrD8rHqWb/c3oLnD+RIl1M14Vd6u1u9X Oob1+hCq82l2ak4K6/muiGCYp3XAByUUYoBry9CX+IaZUzyqkN/aZJdTwAZ1/KmI0X yMmmm3c7lPfAg== Date: Tue, 16 Jun 2026 08:33:34 -0400 From: Sasha Levin To: Matthieu Baerts Cc: stable@vger.kernel.org, Paolo Abeni , Jakub Kicinski Subject: Re: [PATCH 6.18.y 1/2] mptcp: fix missing wakeups in edge scenarios Message-ID: References: <2026061533-ninja-scrabble-539d@gregkh> <20260616001959.2587348-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Disposition: inline In-Reply-To: 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 >> >> [ 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 >> Reviewed-by: Matthieu Baerts (NGI0) >> Signed-off-by: Matthieu Baerts (NGI0) >> Link: https://patch.msgid.link/20260602-net-mptcp-misc-fixes-7-1-rc7-v2-1-856831229976@kernel.org >> Signed-off-by: Jakub Kicinski >> Signed-off-by: Sasha Levin > >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