From nobody Sat Jun 27 12:06:16 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 726F24219EB; Fri, 1 May 2026 19:36:22 +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=1777664182; cv=none; b=ovII98ODTMG8sdX+367YzuCrWx8St1EFOBONLnFqHEkxr2VUK3tdltcKRKPFn1hWX08LswLihVfMor/8vf6eej4AzFuNSseHrU1SosMyA+P7uvcaGMn7YTPo/h2pDAqZmw4OvK2FOo8vo+8D6rAhnLwEcPy+/FauUYiWi6SFvJE= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777664182; c=relaxed/simple; bh=YH7r1TqDwBvSYseUZJ6Hz6O11d1VtypwRVryXcDfqxA=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=JPvptolaVCZHmSYqXXkrSvrnRykBgTnkuF42ICQh1iyDDQx8ktI6axkE089Y4fFXcdskmWU+aAdShUAYKjG9k5hOb6eI8gIeYkViIKukhLIvcWOjrLXMT7G2ew+KVo2LdWFCTWBXEu6piP8MchjyEcllf6TBmwSwoPF6Oal56Wc= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=BvGlhk2A; 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="BvGlhk2A" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 10BA7C2BCC6; Fri, 1 May 2026 19:36:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1777664182; bh=YH7r1TqDwBvSYseUZJ6Hz6O11d1VtypwRVryXcDfqxA=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=BvGlhk2A7v1NrdA/ly4N2ArUC26zOsrnF9oD8LZv7QIG85CQjFKPbJfbgJAtTdctG wkL1E2q5zvmmvCGzoh9OOuK1+zcTIylDkVQCXLLvMdbNURtpfI4xsPSc0NesAcD/n4 J1bgV9HFHVauSGIv6YzURK1/Mo1PvJE1UqKMw/rEMxpT6aBezVa2bF9/hw7Dkwfwke PvbKnxUCsI5nRkFUOphwKeg4SVsnCvuSmgLSB4QoGQ35Z7aqUWqqG34OcHDoT2CnVR 6XGxj//6LbiUMj036RRxpYcLuoX9JEWXMqQQgFcxwYBMuQS/T4D1ADYZG3FMxVqaM4 LY0auJIwhBZQQ== From: "Matthieu Baerts (NGI0)" Date: Fri, 01 May 2026 21:35:37 +0200 Subject: [PATCH net 4/4] mptcp: sockopt: increase seq in mptcp_setsockopt_all_sf Precedence: bulk X-Mailing-List: mptcp@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20260501-net-mptcp-misc-fixes-7-1-rc3-v1-4-b70118df778e@kernel.org> References: <20260501-net-mptcp-misc-fixes-7-1-rc3-v1-0-b70118df778e@kernel.org> In-Reply-To: <20260501-net-mptcp-misc-fixes-7-1-rc3-v1-0-b70118df778e@kernel.org> To: Mat Martineau , Geliang Tang , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Simon Horman , Florian Westphal , Gang Yan , Dmytro Shytyi Cc: netdev@vger.kernel.org, mptcp@lists.linux.dev, linux-kernel@vger.kernel.org, "Matthieu Baerts (NGI0)" , stable@vger.kernel.org X-Mailer: b4 0.15.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=982; i=matttbe@kernel.org; h=from:subject:message-id; bh=YH7r1TqDwBvSYseUZJ6Hz6O11d1VtypwRVryXcDfqxA=; b=owGbwMvMwCVWo/Th0Gd3rumMp9WSGDK/Mqw47dMt4V6VUuPmEBG+ZdencNcmabattx98Xqnqc Lz59tvFHaUsDGJcDLJiiizSbZH5M59X8ZZ4+VnAzGFlAhnCwMUpABNRV2X4n/uFMd34zorfzUe0 +E98q+JQ0BB/LPxe+hP35e3m6ayCRxj+l6ROs/myLsgoL+3qzi0VFnwiC1fr1f9bs2xm3dO+V/H 9vAA= X-Developer-Key: i=matttbe@kernel.org; a=openpgp; fpr=E8CB85F76877057A6E27F77AF6B7824F4269A073 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) --- net/mptcp/sockopt.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/net/mptcp/sockopt.c b/net/mptcp/sockopt.c index 0efe40be2fde..1cf608e7357b 100644 --- a/net/mptcp/sockopt.c +++ b/net/mptcp/sockopt.c @@ -812,6 +812,10 @@ static int mptcp_setsockopt_all_sf(struct mptcp_sock *= msk, int level, if (ret) break; } + + if (!ret) + sockopt_seq_inc(msk); + return ret; } =20 --=20 2.53.0