ACPI: fix boot oops regression in thermal
Fix a memory overflow bug when copying
NULL internal package element object to external.
http://bugzilla.kernel.org/show_bug.cgi?id=10132
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
diff --git a/drivers/acpi/utilities/utobject.c b/drivers/acpi/utilities/utobject.c
index 76ee766..e08b3fa 100644
--- a/drivers/acpi/utilities/utobject.c
+++ b/drivers/acpi/utilities/utobject.c
@@ -432,7 +432,7 @@
* element -- which is legal)
*/
if (!internal_object) {
- *obj_length = 0;
+ *obj_length = sizeof(union acpi_object);
return_ACPI_STATUS(AE_OK);
}