From 6d8c190531d0020870b93eee6a3933cb39fb1f52 Mon Sep 17 00:00:00 2001 From: huaibin Wang Date: Tue, 25 Aug 2015 16:20:34 +0200 Subject: ip6_gre: release cached dst on tunnel removal [ Upstream commit d4257295ba1b389c693b79de857a96e4b7cd8ac0 ] When a tunnel is deleted, the cached dst entry should be released. This problem may prevent the removal of a netns (seen with a x-netns IPv6 gre tunnel): unregister_netdevice: waiting for lo to become free. Usage count = 3 CC: Dmitry Kozlov Fixes: c12b395a4664 ("gre: Support GRE over IPv6") Signed-off-by: huaibin Wang Signed-off-by: Nicolas Dichtel Signed-off-by: David S. Miller Signed-off-by: Greg Kroah-Hartman --- net/ipv6/ip6_gre.c | 1 + 1 file changed, 1 insertion(+) diff --git a/net/ipv6/ip6_gre.c b/net/ipv6/ip6_gre.c index 65156a73b3f3..bf6233cdb753 100644 --- a/net/ipv6/ip6_gre.c +++ b/net/ipv6/ip6_gre.c @@ -359,6 +359,7 @@ static void ip6gre_tunnel_uninit(struct net_device *dev) struct ip6gre_net *ign = net_generic(net, ip6gre_net_id); ip6gre_tunnel_unlink(ign, netdev_priv(dev)); + ip6_tnl_dst_reset(netdev_priv(dev)); dev_put(dev); } -- cgit v1.2.3