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[2620:137:e000::1:20]) by mx.google.com with ESMTP id l19-20020a056402125300b0052246cfd29bsi1241283edw.543.2023.08.04.02.24.36; Fri, 04 Aug 2023 02:25:01 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=zte.com.cn Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229715AbjHDIxQ (ORCPT + 99 others); Fri, 4 Aug 2023 04:53:16 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44056 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229923AbjHDIwu (ORCPT ); Fri, 4 Aug 2023 04:52:50 -0400 X-Greylist: delayed 92 seconds by postgrey-1.37 at lindbergh.monkeyblade.net; Fri, 04 Aug 2023 01:50:19 PDT Received: from mxhk.zte.com.cn (mxhk.zte.com.cn [63.216.63.40]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EB58355B1 for ; Fri, 4 Aug 2023 01:50:19 -0700 (PDT) Received: from mse-fl2.zte.com.cn (unknown [10.5.228.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mxhk.zte.com.cn (FangMail) with ESMTPS id 4RHKD94pTFz7S5Hk; Fri, 4 Aug 2023 16:50:17 +0800 (CST) Received: from szxlzmapp02.zte.com.cn ([10.5.231.79]) by mse-fl2.zte.com.cn with SMTP id 3748nisU010349; Fri, 4 Aug 2023 16:49:44 +0800 (+08) (envelope-from yang.yang29@zte.com.cn) Received: from mapi (szxlzmapp01[null]) by mapi (Zmail) with MAPI id mid14; Fri, 4 Aug 2023 16:49:46 +0800 (CST) Date: Fri, 4 Aug 2023 16:49:46 +0800 (CST) X-Zmail-TransId: 2b0364ccbbaaffffffff989-81c32 X-Mailer: Zmail v1.0 Message-ID: <202308041649468563730@zte.com.cn> Mime-Version: 1.0 From: To: Cc: , , , , Subject: =?utf-8?q?=5BPATCH=5D_udp=5Ftunnel=5Fnic=3A_add_net_device_refcount?= =?utf-8?q?_tracker?= X-MAIL: mse-fl2.zte.com.cn 3748nisU010349 X-Fangmail-Gw-Spam-Type: 0 X-Fangmail-Anti-Spam-Filtered: true X-Fangmail-MID-QID: 64CCBBC9.001/4RHKD94pTFz7S5Hk X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,RCVD_IN_MSPIKE_H5, RCVD_IN_MSPIKE_WL,SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1773289971268256480 X-GMAIL-MSGID: 1773289971268256480 From: xu xin Add net device refcount tracker to udp_tunnel_nic.c. Signed-off-by: xu xin Reviewed-by: Yang Yang Cc: Kuang Mingfu --- net/ipv4/udp_tunnel_nic.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/net/ipv4/udp_tunnel_nic.c b/net/ipv4/udp_tunnel_nic.c index 029219749785..ce8f5c82b0a1 100644 --- a/net/ipv4/udp_tunnel_nic.c +++ b/net/ipv4/udp_tunnel_nic.c @@ -55,6 +55,9 @@ struct udp_tunnel_nic { */ static struct workqueue_struct *udp_tunnel_nic_workqueue; +/* To track netdev_hold and netdev_put */ +static netdevice_tracker udp_tunnel_nic_devtracker; + static const char *udp_tunnel_nic_tunnel_type_name(unsigned int type) { switch (type) { @@ -825,7 +828,7 @@ static int udp_tunnel_nic_register(struct net_device *dev) } utn->dev = dev; - dev_hold(dev); + netdev_hold(dev, &udp_tunnel_nic_devtracker, GFP_KERNEL); dev->udp_tunnel_nic = utn; if (!(info->flags & UDP_TUNNEL_NIC_INFO_OPEN_ONLY)) @@ -879,7 +882,7 @@ udp_tunnel_nic_unregister(struct net_device *dev, struct udp_tunnel_nic *utn) udp_tunnel_nic_free(utn); release_dev: dev->udp_tunnel_nic = NULL; - dev_put(dev); + netdev_put(dev, &udp_tunnel_nic_devtracker); } static int