ACPICA: Fix possible memory leak on error in parser

Fixes a possible memory leak if an allocation failure happens in
the parse loop. Must terminate an executing control method.
Lin Ming, Bob Moore. ACPICA BZ 489.

http://www.acpica.org/bugzilla/show_bug.cgi?id=489

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>

1 files changed, 8 insertions, 0 deletions

diff --git a/drivers/acpi/parser/psparse.c b/drivers/acpi/parser/psparse.c
index 68e932f215ea..dfd3d9028018 100644
--- a/drivers/acpi/parser/psparse.c
+++ b/drivers/acpi/parser/psparse.c
@@ -451,6 +451,14 @@ acpi_status acpi_ps_parse_aml(struct acpi_walk_state *walk_state)
 
         thread = acpi_ut_create_thread_state();
         if (!thread) {
+                if (walk_state->method_desc) {
+
+                        /* Executing a control method - additional cleanup */
+
+                        acpi_ds_terminate_control_method(
+                                walk_state->method_desc, walk_state);
+                }
+
                 acpi_ds_delete_walk_state(walk_state);
                 return_ACPI_STATUS(AE_NO_MEMORY);
         }