From: Xin Long lucien.xin@gmail.com
[ Upstream commit 28e486037747c2180470b77c290d4090ad42f259 ]
In ip6erspan_tunnel_xmit(), if the skb will not be sent out, it has to be freed on the tx_err path. Otherwise when deleting a netns, it would cause dst/dev to leak, and dmesg shows:
unregister_netdevice: waiting for lo to become free. Usage count = 1
Fixes: ef7baf5e083c ("ip6_gre: add ip6 erspan collect_md mode") Signed-off-by: Xin Long lucien.xin@gmail.com Acked-by: William Tu u9012063@gmail.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- net/ipv6/ip6_gre.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/net/ipv6/ip6_gre.c +++ b/net/ipv6/ip6_gre.c @@ -988,7 +988,7 @@ static netdev_tx_t ip6erspan_tunnel_xmit if (unlikely(!tun_info || !(tun_info->mode & IP_TUNNEL_INFO_TX) || ip_tunnel_info_af(tun_info) != AF_INET6)) - return -EINVAL; + goto tx_err;
key = &tun_info->key; memset(&fl6, 0, sizeof(fl6));