From: Lin Ming <ming.m.lin@intel.com>
Date: Fri, 11 Dec 2009 06:36:47 +0000 (+0800)
Subject: ACPICA: Fix possible memory leak for module-level code execution
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=583061c59ffea1ea14f6dca735ab0f99238a7a92;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

ACPICA: Fix possible memory leak for module-level code execution

An object can be leaked for each block of executed module-level
code if the interpreter slack mode is enabled. The change deletes
any implicitly returned object in this case.

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/acpica/nseval.c b/drivers/acpi/acpica/nseval.c
index f771e978c403..65e0d1a260ea 100644
--- a/drivers/acpi/acpica/nseval.c
+++ b/drivers/acpi/acpica/nseval.c
@@ -415,6 +415,12 @@ acpi_ns_exec_module_code(union acpi_operand_object *method_obj,
 	ACPI_DEBUG_PRINT((ACPI_DB_INIT, "Executed module-level code at %p\n",
 			  method_obj->method.aml_start));
 
+	/* Delete a possible implicit return value (in slack mode) */
+
+	if (info->return_object) {
+		acpi_ut_remove_reference(info->return_object);
+	}
+
 	/* Detach the temporary method object */
 
 	acpi_ns_detach_object(parent_node);