From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from zg8tmja2lje4os4yms4ymjma.icoremail.net (zg8tmja2lje4os4yms4ymjma.icoremail.net [206.189.21.223]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 00F4C363C72; Wed, 15 Jul 2026 01:50:57 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=206.189.21.223 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784080270; cv=none; b=mZ76ZnJrrMXxCzb+IzIvYyXWacP1p0qGl0gnavTYQJQ9iUQ0Uvm2GoFm0Cx4eA0v7yHZzR81z8YcpbY8ZDxuFbVk3qB7vUG+hR3iWghUMO5JVE/1rErw+vYrsEvKYliD9J4yKwM6sK19pYT2dxtKRZL00PBPK254/zyXyjFdRpc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784080270; c=relaxed/simple; bh=KQ3mXgUJjubjkEK0GfnFyjyVi3zpnNH3ShlX8nN/2EM=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=SOBMZzwp0haG7DVQ2LEwsC6qA45LUfbAD9uhYciANq5M+boHOLikXRj1frWCRujknBd/nnpCE2VaK3c/HDwgW++rDyUpw9HLHw19kqyCNAAjnAzssZkTHhnTISgbq9Q4qORxeZf/kT5PEInBtwn7rDS9si92FOMVz0U2sg8HJvE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=lzu.edu.cn; spf=pass smtp.mailfrom=lzu.edu.cn; arc=none smtp.client-ip=206.189.21.223 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=lzu.edu.cn Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=lzu.edu.cn Received: from enjou-Legion-Y7000P-2019 (unknown [123.114.53.210]) by app2 (Coremail) with SMTP id zQmowADXcwtp51ZqEkZSAA--.21501S4; Wed, 15 Jul 2026 09:50:47 +0800 (CST) From: Ren Wei To: linux-sctp@vger.kernel.org, netdev@vger.kernel.org Cc: marcelo.leitner@gmail.com, lucien.xin@gmail.com, davem@davemloft.net, edumazet@google.com, pabeni@redhat.com, horms@kernel.org, matttbe@kernel.org, yuantan098@gmail.com, yifanwucs@gmail.com, tomapufckgml@gmail.com, bird@lzu.edu.cn, tpluszz77@gmail.com, roxy520tt@gmail.com, n05ec@lzu.edu.cn, sashiko-bot@kernel.org Subject: [PATCH net v3 2/2] sctp: close UDP tunnel sockets during netns teardown Date: Wed, 15 Jul 2026 09:50:11 +0800 Message-ID: <6dab75f22855cb219e2e30a5497cab03b970ab91.1784033357.git.roxy520tt@gmail.com> X-Mailer: git-send-email 2.51.0 In-Reply-To: References: Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CM-TRANSID:zQmowADXcwtp51ZqEkZSAA--.21501S4 X-Coremail-Antispam: 1UD129KBjvJXoW7uFy7CFWkGrykCF4kKr15urg_yoW8Xw1UpF 1fGayfKFW8J34vgrn3KF48KF1rCan5G39rCws8Kw1fZrsxCry5Ka40q3y8uF4IkFW0kFWa vF1vgr1DKan8AFUanT9S1TB71UUUUU7qnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDU0xBIdaVrnRJUUUB21xkIjI8I6I8E6xAIw20EY4v20xvaj40_Wr0E3s1l1IIY67AE w4v_Jr0_Jr4l8cAvFVAK0II2c7xJM28CjxkF64kEwVA0rcxSw2x7M28EF7xvwVC0I7IYx2 IY67AKxVW5JVW7JwA2z4x0Y4vE2Ix0cI8IcVCY1x0267AKxVW8Jr0_Cr1UM28EF7xvwVC2 z280aVAFwI0_GcCE3s1l84ACjcxK6I8E87Iv6xkF7I0E14v26rxl6s0DM2AIxVAIcxkEcV Aq07x20xvEncxIr21l5I8CrVACY4xI64kE6c02F40Ex7xfMcIj6xIIjxv20xvE14v26r1j 6r18McIj6I8E87Iv67AKxVWUJVW8JwAm72CE4IkC6x0Yz7v_Jr0_Gr1lF7xvr2IYc2Ij64 vIr41lF7I21c0EjII2zVCS5cI20VAGYxC7M4IIrI8v6xkF7I0E8cxan2IY04v7MxkF7I0E n4kS14v26r4a6rW5MxkIecxEwVAFwVWkMxAIw28IcxkI7VAKI48JMxAIw28IcVCjz48v1s IEY20_GrWl4I8I3I0E4IkC6x0Yz7v_Jr0_Gr1lx2IqxVAqx4xG67AKxVWUJVWUGwC20s02 6x8GjcxK67AKxVWUGVWUWwC2zVAF1VAY17CE14v26r4a6rW5MIIYrxkI7VAKI48JMIIF0x vE2Ix0cI8IcVAFwI0_Jr0_JF4lIxAIcVC0I7IYx2IY6xkF7I0E14v26r4j6F4UMIIF0xvE 42xK8VAvwI8IcIk0rVWUJVWUCwCI42IY6I8E87Iv67AKxVWUJVW8JwCI42IY6I8E87Iv6x kF7I0E14v26r4j6r4UJbIYCTnIWIevJa73UjIFyTuYvjTRMxRhDUUUU X-CM-SenderInfo: zqqvvuo6o23hxhgxhubq/1tbiAQAJCWpV8VkJxgAAsZ From: Zhiling Zou proc_sctp_do_udp_port() starts per-net SCTP UDP tunneling sockets when net.sctp.udp_port is set, and stops/restarts them when the sysctl value changes. The netns exit path does not stop these sockets, so a namespace can be torn down while its SCTP UDP tunnel sockets are still installed. Close the UDP tunnel sockets from sctp_ctrlsock_exit() after unregistering the per-net sysctl table. This prevents new sysctl writes from racing in while the sockets are being released, and closes the sockets before the control socket is destroyed. Fixes: 046c052b475e ("sctp: enable udp tunneling socks") Cc: stable@vger.kernel.org Reported-by: Sashiko Closes: https://sashiko.dev/#/patchset/b9f1f02b0780ad6a719e2413f5f0bb8eb7702d94.1782585631.git.roxy520tt%40gmail.com Signed-off-by: Zhiling Zou Signed-off-by: Ren Wei --- Changes in v3: - No code changes. net/sctp/protocol.c | 1 + 1 file changed, 1 insertion(+) diff --git a/net/sctp/protocol.c b/net/sctp/protocol.c index 49d9740b1e0f..27c26e12f95d 100644 --- a/net/sctp/protocol.c +++ b/net/sctp/protocol.c @@ -1460,6 +1460,7 @@ static int __net_init sctp_ctrlsock_init(struct net *net) static void __net_exit sctp_ctrlsock_exit(struct net *net) { sctp_sysctl_net_unregister(net); + sctp_udp_sock_stop(net); /* Free the control endpoint. */ inet_ctl_sock_destroy(net->sctp.ctl_sock); -- 2.43.0