From: Xiongfeng Wang <wangxiongfeng2@huawei.com>
Date: Thu, 9 Nov 2017 06:22:39 +0000 (+0800)
Subject: ACPI / utils: Fix memory leak in acpi_evaluate_reference() error path
X-Git-Tag: rel_imx_4.19.35_1.1.0~11236^2
X-Git-Url: https://git.somdevices.com/?a=commitdiff_plain;h=09e15086936e01d7588020be37ea724116bcefec;p=linux.git

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>
---

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;