diff --git a/[refs] b/[refs]
index 4e87b6673932..6a7c7a29ac5d 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 75e6bf9638992dfc0fec9c3ca10444c8e0d6a638
+refs/heads/master: 6a43e574c5af7d9bd084992b1c9c3cdbc3b6c0e9
diff --git a/trunk/drivers/pci/intel-iommu.c b/trunk/drivers/pci/intel-iommu.c
index dcf0295a9b60..53075424a434 100644
--- a/trunk/drivers/pci/intel-iommu.c
+++ b/trunk/drivers/pci/intel-iommu.c
@@ -826,8 +826,10 @@ static void dma_pte_free_pagetable(struct dmar_domain *domain,
 				continue;
 			}
 			do {
-				free_pgtable_page(phys_to_virt(dma_pte_addr(pte)));
-				dma_clear_pte(pte);
+				if (dma_pte_present(pte)) {
+					free_pgtable_page(phys_to_virt(dma_pte_addr(pte)));
+					dma_clear_pte(pte);
+				}
 				pte++;
 				tmp += level_size(level);
 			} while (!first_pte_in_page(pte) &&