mlx4_en: Consider napi_get_frags() failure.

If failed to get skb frags using napi_get_frags(),
the packet is dropped.

Reported-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: Yevgeny Petrilin <yevgenyp@mellanox.co.il>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/net/mlx4/en_rx.c b/drivers/net/mlx4/en_rx.c
index c4aad7f2beb9..570f2508fb30 100644
--- a/drivers/net/mlx4/en_rx.c
+++ b/drivers/net/mlx4/en_rx.c
@@ -591,6 +591,8 @@ int mlx4_en_process_rx_cq(struct net_device *dev, struct mlx4_en_cq *cq, int bud
                                  * - not an IP fragment */
                                 if (dev->features & NETIF_F_GRO) {
                                         struct sk_buff *gro_skb = napi_get_frags(&cq->napi);
+                                        if (!gro_skb)
+                                                goto next;
 
                                         nr = mlx4_en_complete_rx_desc(
                                                 priv, rx_desc,