vhost/test: fix memory leak of vhost virtqueues

We need free the vqs in .release(), which are allocated in .open().

Signed-off-by: Xianting Tian <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Michael S. Tsirkin <[email protected]>
Acked-by: Jason Wang <[email protected]>

Author: Xianting Tian

drivers/vhost/test.c

@@ -166,6 +166,7 @@ static int vhost_test_release(struct inode *inode, struct file *f)
 	/* We do an extra flush before freeing memory,
 	 * since jobs can re-queue themselves. */
 	vhost_test_flush(n);
+	kfree(n->dev.vqs);
 	kfree(n);
 	return 0;
 }