From 09e15086936e01d7588020be37ea724116bcefec Mon Sep 17 00:00:00 2001
From: Xiongfeng Wang <wangxiongfeng2@huawei.com>
Date: Thu, 9 Nov 2017 14:22:39 +0800
Subject: [PATCH] ACPI / utils: Fix memory leak in acpi_evaluate_reference()
 error path

When package.count is larger than ACPI_MAX_HANDLES, buffer.pointer is
not freed before the function returns AE_NO_MEMORY. Fix this possible
memory leak by kfree'ing it.

Signed-off-by: Xiongfeng Wang <wangxiongfeng2@huawei.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
---
 drivers/acpi/utils.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/acpi/utils.c b/drivers/acpi/utils.c
index 0a9e5979aaa9..9d49a1acebe3 100644
--- a/drivers/acpi/utils.c
+++ b/drivers/acpi/utils.c
@@ -355,6 +355,7 @@ acpi_evaluate_reference(acpi_handle handle,
 	}
 
 	if (package->package.count > ACPI_MAX_HANDLES) {
+		kfree(package);
 		return AE_NO_MEMORY;
 	}
 	list->count = package->package.count;
-- 
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