diff --git a/drivers/usb/misc/usbtest.c b/drivers/usb/misc/usbtest.c
index 0cfbd789ddf2..d92b7ec9a230 100644
--- a/drivers/usb/misc/usbtest.c
+++ b/drivers/usb/misc/usbtest.c
@@ -1378,7 +1378,6 @@ static void iso_callback (struct urb *urb)
 			break;
 		}
 	}
-	simple_free_urb (urb);
 
 	ctx->pending--;
 	if (ctx->pending == 0) {
@@ -1495,6 +1494,7 @@ test_iso_queue (struct usbtest_dev *dev, struct usbtest_param *param,
 			}
 
 			simple_free_urb (urbs [i]);
+			urbs[i] = NULL;
 			context.pending--;
 			context.submit_error = 1;
 			break;
@@ -1504,6 +1504,10 @@ test_iso_queue (struct usbtest_dev *dev, struct usbtest_param *param,
 
 	wait_for_completion (&context.done);
 
+	for (i = 0; i < param->sglen; i++) {
+		if (urbs[i])
+			simple_free_urb(urbs[i]);
+	}
 	/*
 	 * Isochronous transfers are expected to fail sometimes.  As an
 	 * arbitrary limit, we will report an error if any submissions