From nobody Mon Feb 9 19:37:24 2026 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 BB7FBB665 for ; Tue, 3 Feb 2026 03:47:59 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1770090479; cv=none; b=czljhZTYy+vFQTDAXQ48ccZ+3tKIH2fGt2CPHkx774N2Buc7ugrxkMd3AbydEj1sHXQ7FU29VsNHM5MQz7XXjTve5w2UmppDCDLPPpJ+3+GPxbzMTjNa7q/jA4neTMAybL3wH88ETTKKmNBOLsV3UI2ibvcb0fHAq7mfykYxiS4= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1770090479; c=relaxed/simple; bh=vov6tkqC87cnSOm8by38/8go1MTToOlVyH1VKguG0gg=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=JS6zrozWaqSTpSZwZCKBAFNnn0zPoX12zTZZ/GSKwrxMPk0pDt8rJpNG/3M8K/bNM6RkFMrn+Jrhc2Ic/OOiX7RouU1wGZHqLvGXvAkEUoorLw9s85e4/ZZ1xH3s1QaLt9GwUfvsbaKs5DXqbo5k4N88BqOUcK3y/gqIJDeYHgk= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=abA1YyLm; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="abA1YyLm" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2862FC2BC87; Tue, 3 Feb 2026 03:47:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1770090479; bh=vov6tkqC87cnSOm8by38/8go1MTToOlVyH1VKguG0gg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=abA1YyLmrlwkmyttZd77Pu165vZ9lVF8AqrFZZyyowNbQLsRl22hA9uo00JlFzRmi XzosE9Dk0zCSCOBzcVZPAWRPkfl5TKj10LSK0UH6xwdL30JgnMFDSSWwShouWXDvkS oPnAQyl9yLD7AJmACdvXP5XQxcV8wkY0H6GOg2+sUKSaORMqrUqUlJzmWxKhTruy4C NYRzoJiAtYuX3TknXW5swdNE9gVFPZptcMwQ4khXk7DZaxXrC0XBpvv0XzNQ/zB4l4 PXWaNzDBpqMv2X8kWskuuLS+yR9cCwIXuZzqsQbWCz6rT6erGl+Y5NRIZswEIys3Zo rlMgTkt9YocOw== From: Geliang Tang To: mptcp@lists.linux.dev Cc: Gang Yan , Geliang Tang Subject: [PATCH mptcp-next v2 1/2] mptcp: check desc->count in read_sock Date: Tue, 3 Feb 2026 11:47:44 +0800 Message-ID: X-Mailer: git-send-email 2.52.0 In-Reply-To: References: Precedence: bulk X-Mailing-List: mptcp@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Gang Yan In __tcp_read_sock(), it checks whether desc->count equals 0 within the loop and breaks the loop if true. This check should also be synchronized to __mptcp_read_sock(). Co-developed-by: Geliang Tang Signed-off-by: Geliang Tang Signed-off-by: Gang Yan --- net/mptcp/protocol.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/net/mptcp/protocol.c b/net/mptcp/protocol.c index c88882062c40..fd9a574d1dda 100644 --- a/net/mptcp/protocol.c +++ b/net/mptcp/protocol.c @@ -4382,6 +4382,8 @@ static int __mptcp_read_sock(struct sock *sk, read_de= scriptor_t *desc, } =20 mptcp_eat_recv_skb(sk, skb); + if (!desc->count) + break; } =20 if (noack) --=20 2.52.0