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916c1689a0
skb_cow called in vlan_reorder_header does not free the skb when it failed, and vlan_reorder_header returns NULL to reset original skb when it is called in vlan_untag, lead to a memory leak. Signed-off-by: Li RongQing <roy.qing.li@gmail.com> Acked-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>