diff --git a/drivers/block/xen-blkfront.c b/drivers/block/xen-blkfront.c
index b6c8ce25435994558885e9e4b9c4ac6aafaa9357..8f905089b72b7e49c2434d1b6abba9fa76321051 100644
--- a/drivers/block/xen-blkfront.c
+++ b/drivers/block/xen-blkfront.c
@@ -977,6 +977,8 @@ static void backend_changed(struct xenbus_device *dev,
 		break;
 
 	case XenbusStateClosing:
+		if (info->gd == NULL)
+			xenbus_dev_fatal(dev, -ENODEV, "gd is NULL");
 		bd = bdget_disk(info->gd, 0);
 		if (bd == NULL)
 			xenbus_dev_fatal(dev, -ENODEV, "bdget failed");