[PATCH linux-next 2/4] ipvlan: fix possible NULL pointer dereference in ipvlan_get_iflink

[Honggang Li]

Signed-off-by: Honggang Li <honli@xxxxxxxxxx>
---
 drivers/net/ipvlan/ipvlan_main.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ipvlan/ipvlan_main.c b/drivers/net/ipvlan/ipvlan_main.c
index 77b92a0..479fcf7 100644
--- a/drivers/net/ipvlan/ipvlan_main.c
+++ b/drivers/net/ipvlan/ipvlan_main.c
@@ -308,7 +308,10 @@ static int ipvlan_get_iflink(const struct net_device *dev)
 {
 	struct ipvl_dev *ipvlan = netdev_priv(dev);
 
-	return ipvlan->phy_dev->ifindex;
+	if (ipvlan && pvlan->phy_dev)
+		return ipvlan->phy_dev->ifindex;
+	else
+		return 0;
 }
 
 static const struct net_device_ops ipvlan_netdev_ops = {
-- 
1.8.3.1

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