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/utmisc.c b/drivers/acpi/utilities/utmisc.c
index f34be67..9089a15 100644
--- a/drivers/acpi/utilities/utmisc.c
+++ b/drivers/acpi/utilities/utmisc.c
@@ -995,6 +995,15 @@
state->pkg.
this_target_obj, 0);
if (!state) {
+
+ /* 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(AE_NO_MEMORY);
}
}