[PATCH net] macvlan: fix leak in macvlan_handle_frame

[Sabrina Dubroca]

Reset pskb in macvlan_handle_frame in case skb_share_check returned a
clone.

Fixes: 8a4eb5734e8d ("net: introduce rx_handler results and logic around that")
Signed-off-by: Sabrina Dubroca <s...@queasysnail.net>
---
 drivers/net/macvlan.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/net/macvlan.c b/drivers/net/macvlan.c
index 86f6c6292c27..06c8bfeaccd6 100644
--- a/drivers/net/macvlan.c
+++ b/drivers/net/macvlan.c
@@ -415,6 +415,7 @@ static rx_handler_result_t macvlan_handle_frame(struct 
sk_buff **pskb)
                skb = ip_check_defrag(dev_net(skb->dev), skb, 
IP_DEFRAG_MACVLAN);
                if (!skb)
                        return RX_HANDLER_CONSUMED;
+               *pskb = skb;
                eth = eth_hdr(skb);
                macvlan_forward_source(skb, port, eth->h_source);
                src = macvlan_hash_lookup(port, eth->h_source);
@@ -456,6 +457,7 @@ static rx_handler_result_t macvlan_handle_frame(struct 
sk_buff **pskb)
                goto out;
        }
 
+       *pskb = skb;
        skb->dev = dev;
        skb->pkt_type = PACKET_HOST;
 
-- 
2.6.2

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