3 files changed, 25 insertions, 9 deletions

diff --git a/drivers/acpi/utilities/utalloc.c b/drivers/acpi/utilities/utalloc.c
index e7bf34a7b1d2..7dcb67e0b215 100644
--- a/drivers/acpi/utilities/utalloc.c
+++ b/drivers/acpi/utilities/utalloc.c
@@ -242,10 +242,12 @@ acpi_ut_initialize_buffer(struct acpi_buffer * buffer,
 {
 	acpi_status status = AE_OK;
 
-	if (!required_length) {
-		WARN_ON(1);
-		return AE_ERROR;
+	/* Parameter validation */
+
+	if (!buffer || !required_length) {
+		return (AE_BAD_PARAMETER);
 	}
+
 	switch (buffer->length) {
 	case ACPI_NO_BUFFER:
 
diff --git a/drivers/acpi/utilities/utdelete.c b/drivers/acpi/utilities/utdelete.c
index c5c791a575c9..42609d3a8aa9 100644
--- a/drivers/acpi/utilities/utdelete.c
+++ b/drivers/acpi/utilities/utdelete.c
@@ -135,6 +135,10 @@ static void acpi_ut_delete_internal_obj(union acpi_operand_object *object)
 		obj_pointer = object->package.elements;
 		break;
 
+		/*
+		 * These objects have a possible list of notify handlers.
+		 * Device object also may have a GPE block.
+		 */
 	case ACPI_TYPE_DEVICE:
 
 		if (object->device.gpe_block) {
@@ -142,9 +146,14 @@ static void acpi_ut_delete_internal_obj(union acpi_operand_object *object)
 						       gpe_block);
 		}
 
-		/* Walk the handler list for this device */
+		/*lint -fallthrough */
+
+	case ACPI_TYPE_PROCESSOR:
+	case ACPI_TYPE_THERMAL:
+
+		/* Walk the notify handler list for this object */
 
-		handler_desc = object->device.handler;
+		handler_desc = object->common_notify.handler;
 		while (handler_desc) {
 			next_desc = handler_desc->address_space.next;
 			acpi_ut_remove_reference(handler_desc);
diff --git a/drivers/acpi/utilities/utobject.c b/drivers/acpi/utilities/utobject.c
index e25484495e65..916eff399eb3 100644
--- a/drivers/acpi/utilities/utobject.c
+++ b/drivers/acpi/utilities/utobject.c
@@ -425,6 +425,7 @@ acpi_ut_get_simple_object_size(union acpi_operand_object *internal_object,
 			       acpi_size * obj_length)
 {
 	acpi_size length;
+	acpi_size size;
 	acpi_status status = AE_OK;
 
 	ACPI_FUNCTION_TRACE_PTR(ut_get_simple_object_size, internal_object);
@@ -484,10 +485,14 @@ acpi_ut_get_simple_object_size(union acpi_operand_object *internal_object,
 			 * Get the actual length of the full pathname to this object.
 			 * The reference will be converted to the pathname to the object
 			 */
-			length +=
-			    ACPI_ROUND_UP_TO_NATIVE_WORD
-			    (acpi_ns_get_pathname_length
-			     (internal_object->reference.node));
+			size =
+			    acpi_ns_get_pathname_length(internal_object->
+							reference.node);
+			if (!size) {
+				return_ACPI_STATUS(AE_BAD_PARAMETER);
+			}
+
+			length += ACPI_ROUND_UP_TO_NATIVE_WORD(size);
 			break;
 
 		default: