ACPICA: Fix possible memory leak, error exit path
Fixed two possible memory leaks in the error exit paths of
acpi_ut_update_objerct_reference() and
acpi_ut_walk_package_tree()
These functions are similar in that they use a stack of state objects in
order to eliminate recursion. The stack must be fully deallocated
if an error occurs.
http://www.acpica.org/bugzilla/show_bug.cgi?id=383
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
diff --git a/drivers/acpi/utilities/utdelete.c b/drivers/acpi/utilities/utdelete.c
index 5c21975..d197c6b 100644
--- a/drivers/acpi/utilities/utdelete.c
+++ b/drivers/acpi/utilities/utdelete.c
@@ -585,6 +585,13 @@
ACPI_EXCEPTION((AE_INFO, status,
"Could not update object reference count"));
+ /* Free any stacked Update State objects */
+
+ while (state_list) {
+ state = acpi_ut_pop_generic_state(&state_list);
+ acpi_ut_delete_generic_state(state);
+ }
+
return_ACPI_STATUS(status);
}