diff --git a/[refs] b/[refs]
index a01d5d15ab0c..21822b4479a1 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 2ff729f5445cc47d1910386c36e53fc6b1c5e47a
+refs/heads/master: 8211a7b5857914058c52ae977c96463e419b37ab
diff --git a/trunk/drivers/pci/dmar.c b/trunk/drivers/pci/dmar.c
index 380b60e677e0..3264b626725a 100644
--- a/trunk/drivers/pci/dmar.c
+++ b/trunk/drivers/pci/dmar.c
@@ -1226,7 +1226,7 @@ irqreturn_t dmar_fault(int irq, void *dev_id)
 				source_id, guest_addr);
 
 		fault_index++;
-		if (fault_index > cap_num_fault_regs(iommu->cap))
+		if (fault_index >= cap_num_fault_regs(iommu->cap))
 			fault_index = 0;
 		spin_lock_irqsave(&iommu->register_lock, flag);
 	}