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authorhuaibin Wang <huaibin.wang@6wind.com>2015-08-25 16:20:34 +0200
committerDavid S. Miller <davem@davemloft.net>2015-08-25 14:33:00 -0700
commitd4257295ba1b389c693b79de857a96e4b7cd8ac0 (patch)
treeb8e26b3e31c6db69e4c5ce38c6150016495195b8
parent8b63ec1837fa4c1ea604b278d201454eb3b85066 (diff)
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ip6_gre: release cached dst on tunnel removal
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@mail.ru> Fixes: c12b395a4664 ("gre: Support GRE over IPv6") Signed-off-by: huaibin Wang <huaibin.wang@6wind.com> Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--net/ipv6/ip6_gre.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/net/ipv6/ip6_gre.c b/net/ipv6/ip6_gre.c
index a38d3ac0f18f..69f4f689f06a 100644
--- a/net/ipv6/ip6_gre.c
+++ b/net/ipv6/ip6_gre.c
@@ -361,6 +361,7 @@ 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);
}