diff --git a/tools/testing/cxl/test/mem.c b/tools/testing/cxl/test/mem.c
index 9a7cd3f46a1e..739343cd5802 100644
--- a/tools/testing/cxl/test/mem.c
+++ b/tools/testing/cxl/test/mem.c
@@ -1724,7 +1724,7 @@ static int cxl_mock_mem_probe(struct platform_device *pdev)
 		return -ENOMEM;
 	dev_set_drvdata(dev, mdata);
 
-	mdata->lsa = vmalloc(LSA_SIZE);
+	mdata->lsa = vzalloc(LSA_SIZE);
 	if (!mdata->lsa)
 		return -ENOMEM;
 	mdata->fw = vmalloc(FW_SIZE);