diff --git a/[refs] b/[refs]
index 772704d0f36c..af4a02532816 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: d6f882e10442c1ea6ed5f93365f48be4cb520be7
+refs/heads/master: b6a163875935ce8e8e85901a7f2b68f7a314d914
diff --git a/trunk/drivers/acpi/utils.c b/trunk/drivers/acpi/utils.c
index eba55b7d6c95..44ea60cf21c0 100644
--- a/trunk/drivers/acpi/utils.c
+++ b/trunk/drivers/acpi/utils.c
@@ -407,6 +407,12 @@ acpi_evaluate_reference(acpi_handle handle,
 			break;
 		}
 
+		if (!element->reference.handle) {
+			printk(KERN_WARNING PREFIX "Invalid reference in"
+			       " package %s\n", pathname);
+			status = AE_NULL_ENTRY;
+			break;
+		}
 		/* Get the  acpi_handle. */
 
 		list->handles[i] = element->reference.handle;