diff --git a/drivers/iommu/dmar.c b/drivers/iommu/dmar.c
index 86e2f4a..2623a57 100644
--- a/drivers/iommu/dmar.c
+++ b/drivers/iommu/dmar.c
@@ -1040,7 +1040,7 @@
 
 	qi->desc = page_address(desc_page);
 
-	qi->desc_status = kmalloc(QI_LENGTH * sizeof(int), GFP_ATOMIC);
+	qi->desc_status = kzalloc(QI_LENGTH * sizeof(int), GFP_ATOMIC);
 	if (!qi->desc_status) {
 		free_page((unsigned long) qi->desc);
 		kfree(qi);