Check for nil before deferencing pointer in SG config

nathanleclaire · nathanleclaire · commit f17cce330c5b · 2016-01-13T12:07:45.000-08:00
Signed-off-by: Nathan LeClaire &lt;nathan.leclaire@gmail.com&gt;
diff --git a/drivers/amazonec2/amazonec2.go b/drivers/amazonec2/amazonec2.go
@@ -866,13 +866,15 @@ func (d *Driver) configureSecurityGroupPermissions(group *ec2.SecurityGroup) []*
 	hasDockerPort := false
 	hasSwarmPort := false
 	for _, p := range group.IpPermissions {
-		switch *p.FromPort {
-		case 22:
-			hasSshPort = true
-		case int64(dockerPort):
-			hasDockerPort = true
-		case int64(swarmPort):
-			hasSwarmPort = true
+		if p.FromPort != nil {
+			switch *p.FromPort {
+			case 22:
+				hasSshPort = true
+			case int64(dockerPort):
+				hasDockerPort = true
+			case int64(swarmPort):
+				hasSwarmPort = true
+			}
 		}
 	}
 
