From mboxrd@z Thu Jan 1 00:00:00 1970 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 9863D36A378; Tue, 12 May 2026 18:14:57 +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=1778609697; cv=none; b=gy08uaHOMbkS5BA5/nQE22+GMl23ju6mhJLq+46ik6k//svc01kCW0RsnpxA1cAs7jHGh1zYXXJyqAS/nQ7ga+ipEaqU/6a1j2FB5LJtplpesHZ7ATKjxFKuKOeog7s62VDhD7h/J2CNXSikCwDnz4Sk/jieoaO/ECFIynyGJM8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778609697; c=relaxed/simple; bh=DaxzpXWFaTXdBHKNnmpzZxzQvS2OznJGnwgJx4C8g2M=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=tXh7ZvpoTa5uIq1krZ3LC+TDl0vRyidHjgEsrcjR5Rr5cjMEwBYF+KxXNMm1b6ACj7XmBWPAdbxG8j68jXKCogusIBKzzJxB0O/8nGqV8Ls+VZ9qRHisov3oHNbk9P3teH1GKY7kGBfY9L18Lae4OQDJomu8h2BledSDsCQ8VPk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=EtSlAl56; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="EtSlAl56" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 281D3C2BCB0; Tue, 12 May 2026 18:14:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1778609697; bh=DaxzpXWFaTXdBHKNnmpzZxzQvS2OznJGnwgJx4C8g2M=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=EtSlAl56MlytEsd50jaQbMJjo2dpDLAkRoe+vvZZ6UN3AupJnCQ5odYJtcXx4cTgG A+o8UiGF0QI48qvcHcinPxKqurm2zAs9MAMmagx5sI163uTRWVpKUAqCbgK0fyiSAM yCPSJvBnSmeMNPTKEbxFj8EePwibDsM3hKMmHuKI= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Paolo Abeni , Mat Martineau , "Matthieu Baerts (NGI0)" , Jakub Kicinski Subject: [PATCH 7.0 255/307] mptcp: sockopt: increase seq in mptcp_setsockopt_all_sf Date: Tue, 12 May 2026 19:40:50 +0200 Message-ID: <20260512173945.508274717@linuxfoundation.org> X-Mailer: git-send-email 2.54.0 In-Reply-To: <20260512173940.117428952@linuxfoundation.org> References: <20260512173940.117428952@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 7.0-stable review patch. If anyone has any objections, please let me know. ------------------ From: Matthieu Baerts (NGI0) commit 70ece9d7021c54cf40c72b31b066e9088f5f75f5 upstream. mptcp_setsockopt_all_sf() was missing a call to sockopt_seq_inc(). This is required not to cause missing synchronization for newer subflows created later on. This helper is called each time a socket option is set on subflows, and future ones will need to inherit this option after their creation. Fixes: 51c5fd09e1b4 ("mptcp: add TCP_MAXSEG sockopt support") Cc: stable@vger.kernel.org Suggested-by: Paolo Abeni Reviewed-by: Mat Martineau Signed-off-by: Matthieu Baerts (NGI0) Link: https://patch.msgid.link/20260501-net-mptcp-misc-fixes-7-1-rc3-v1-4-b70118df778e@kernel.org Signed-off-by: Jakub Kicinski Signed-off-by: Greg Kroah-Hartman --- net/mptcp/sockopt.c | 4 ++++ 1 file changed, 4 insertions(+) --- a/net/mptcp/sockopt.c +++ b/net/mptcp/sockopt.c @@ -812,6 +812,10 @@ static int mptcp_setsockopt_all_sf(struc if (ret) break; } + + if (!ret) + sockopt_seq_inc(msk); + return ret; }