From 106da663ff495e0aea3ac15b8317aa410754fcac Mon Sep 17 00:00:00 2001 From: Nicolas Dichtel Date: Mon, 13 Jun 2016 10:31:04 +0200 Subject: ovs/gre,geneve: fix error path when creating an iface 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 --- net/ipv4/ip_gre.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) (limited to 'net') diff --git a/net/ipv4/ip_gre.c b/net/ipv4/ip_gre.c index 4d2025f7ec57..08deba679c8c 100644 --- a/net/ipv4/ip_gre.c +++ b/net/ipv4/ip_gre.c @@ -1121,6 +1121,7 @@ struct net_device *gretap_fb_dev_create(struct net *net, const char *name, { struct nlattr *tb[IFLA_MAX + 1]; struct net_device *dev; + LIST_HEAD(list_kill); struct ip_tunnel *t; int err; @@ -1136,8 +1137,10 @@ struct net_device *gretap_fb_dev_create(struct net *net, const char *name, 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. @@ -1148,7 +1151,8 @@ struct net_device *gretap_fb_dev_create(struct net *net, const char *name, 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); -- cgit v1.2.3