From patchwork Fri May 8 12:30:58 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 226089 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.8 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3AA65C38A2A for ; Fri, 8 May 2020 13:21:21 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1512A24991 for ; Fri, 8 May 2020 13:21:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1588944081; bh=vwci9RWDmnCqqO27ReEHvvAjO3atjmtDijjFMQmolW4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=yaAhGuLB8GAfVSvxbla/t0KQRTSxEcT2Ymvbnfbris/8C0AopuB8ihlKP8R+Lf/og uLp7gCSXmZKmyLysqvZcravdOVwHZpL256zizopLR/olvhPKnraFsRQ2iuWP0KaPbN V1Xcz/pd6uMJIqmqr8MWxroRmTwClGIIPtA75rYU= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727096AbgEHNVS (ORCPT ); Fri, 8 May 2020 09:21:18 -0400 Received: from mail.kernel.org ([198.145.29.99]:33934 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728617AbgEHMk0 (ORCPT ); Fri, 8 May 2020 08:40:26 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 54E882495C; Fri, 8 May 2020 12:40:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1588941625; bh=vwci9RWDmnCqqO27ReEHvvAjO3atjmtDijjFMQmolW4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=uZjJpqavKiQYH6MGKuAzHfABqVT/grDRODJhnXSTt8PzSsT9zaTRdeHL2kzZLMAd2 yw3BaJV6g0Z/kEiDASWI6QRt6BDeiZX9OZFWhyLmNf1N+P4Axxbd8aReuH9qM9oJBw f+cmU4Nt+i2A7awbvh+OCMpVGRWic6bPWMPDkQoQ= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, David Wragg , Nicolas Dichtel , "David S. Miller" Subject: [PATCH 4.4 067/312] ovs/gre, geneve: fix error path when creating an iface Date: Fri, 8 May 2020 14:30:58 +0200 Message-Id: <20200508123129.264117885@linuxfoundation.org> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200508123124.574959822@linuxfoundation.org> References: <20200508123124.574959822@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Nicolas Dichtel commit 106da663ff495e0aea3ac15b8317aa410754fcac upstream. After ipgre_newlink()/geneve_configure() call, the netdev is registered. Fixes: 7e059158d57b ("vxlan, gre, geneve: Set a large MTU on ovs-created tunnel devices") CC: David Wragg Signed-off-by: Nicolas Dichtel Signed-off-by: David S. Miller Signed-off-by: Greg Kroah-Hartman --- drivers/net/geneve.c | 10 +++++++--- net/ipv4/ip_gre.c | 10 +++++++--- 2 files changed, 14 insertions(+), 6 deletions(-) --- a/drivers/net/geneve.c +++ b/drivers/net/geneve.c @@ -1340,6 +1340,7 @@ struct net_device *geneve_dev_create_fb( { struct nlattr *tb[IFLA_MAX + 1]; struct net_device *dev; + LIST_HEAD(list_kill); int err; memset(tb, 0, sizeof(tb)); @@ -1350,8 +1351,10 @@ struct net_device *geneve_dev_create_fb( err = geneve_configure(net, dev, &geneve_remote_unspec, 0, 0, 0, htons(dst_port), true); - if (err) - goto err; + if (err) { + free_netdev(dev); + return ERR_PTR(err); + } /* openvswitch users expect packet sizes to be unrestricted, * so set the largest MTU we can. @@ -1363,7 +1366,8 @@ struct net_device *geneve_dev_create_fb( return dev; err: - free_netdev(dev); + geneve_dellink(dev, &list_kill); + unregister_netdevice_many(&list_kill); return ERR_PTR(err); } EXPORT_SYMBOL_GPL(geneve_dev_create_fb); --- a/net/ipv4/ip_gre.c +++ b/net/ipv4/ip_gre.c @@ -1230,6 +1230,7 @@ struct net_device *gretap_fb_dev_create( { struct nlattr *tb[IFLA_MAX + 1]; struct net_device *dev; + LIST_HEAD(list_kill); struct ip_tunnel *t; int err; @@ -1245,8 +1246,10 @@ struct net_device *gretap_fb_dev_create( t->collect_md = true; err = ipgre_newlink(net, dev, tb, NULL); - if (err < 0) - goto out; + if (err < 0) { + free_netdev(dev); + return ERR_PTR(err); + } /* openvswitch users expect packet sizes to be unrestricted, * so set the largest MTU we can. @@ -1257,7 +1260,8 @@ struct net_device *gretap_fb_dev_create( return dev; out: - free_netdev(dev); + ip_tunnel_dellink(dev, &list_kill); + unregister_netdevice_many(&list_kill); return ERR_PTR(err); } EXPORT_SYMBOL_GPL(gretap_fb_dev_create);