3.16.7-ckt17 -stable review patch. If anyone has any objections, please let me know.
------------------
From: huaibin Wang <huaibin.wang@xxxxxxxxx>
commit d4257295ba1b389c693b79de857a96e4b7cd8ac0 upstream.
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 <xeb@xxxxxxx>
Fixes: c12b395a4664 ("gre: Support GRE over IPv6")
Signed-off-by: huaibin Wang <huaibin.wang@xxxxxxxxx>
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@xxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Luis Henriques <luis.henriques@xxxxxxxxxxxxx>
---
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 07506e7a8917..f5ea5aaf75f9 100644
--- a/net/ipv6/ip6_gre.c
+++ b/net/ipv6/ip6_gre.c
@@ -358,6 +358,7 @@ static void ip6gre_tunnel_uninit(struct net_device *dev)
struct ip6gre_net *ign = net_generic(t->net, ip6gre_net_id);
ip6gre_tunnel_unlink(ign, t);
+ ip6_tnl_dst_reset(t);
dev_put(dev);
}
--
To unsubscribe from this list: send the line "unsubscribe stable" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html