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 60D6433ADBA; Tue, 12 May 2026 18:00:25 +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=1778608825; cv=none; b=LDtcgTGElsDXP57RdD3OLkFVSSTbTxBX8Nv5WSnyJR59JMi4Mp+DQrY1Blri5iTHEkH3tVjsyh5Z744a6O8RWdAdiIkyoxQ0PC2DpXrCApZHEwyPX4CFdt4mjqNvxlJDc5CS10knBIX8bl5soTBqp8nSCD/1KFTypnZkcYDfZqk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778608825; c=relaxed/simple; bh=IzfvR/2I6SJ2pQrJPnkmniwFKG1sbqYjfaUHPQ3RI3M=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=EjOL1EllqpZXDl2o+U0MWjxZ2SCKMloOFTnyEJ6+FSXMXF9JJwDP0tOO2xbhfyOf7/ORYsow/vY9NLvPucEYTW3NDeaqkSkBhIhAZ3LX4Tgz/J7IGvF16/gueze1ZP3GL2lq1Iewmq2NWjy941JTO3mzUaWHRRD8331MqDm05Vk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=DYXVfZAj; 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="DYXVfZAj" Received: by smtp.kernel.org (Postfix) with ESMTPSA id E2442C2BCB0; Tue, 12 May 2026 18:00:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1778608825; bh=IzfvR/2I6SJ2pQrJPnkmniwFKG1sbqYjfaUHPQ3RI3M=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=DYXVfZAjweslrYNGU05gmWTcR87FcpXMxXapIIigzLdauMSva2I/0Qx4tqlCYyV4c trVjG2n3mtVshZOsQvIyzoGOy8XgoQt9+9MWxI3fsk+HW6V5lD2NjDLP8IWrGvGH5p HdXLzjFf13ABiE3LdAlJ6luqUxnlmz2MjCCXk7sE= 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 6.18 212/270] mptcp: sockopt: increase seq in mptcp_setsockopt_all_sf Date: Tue, 12 May 2026 19:40:13 +0200 Message-ID: <20260512173942.910704020@linuxfoundation.org> X-Mailer: git-send-email 2.54.0 In-Reply-To: <20260512173938.452574370@linuxfoundation.org> References: <20260512173938.452574370@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 6.18-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; }