linux-kernel - [Patch v2 12/13] nouveau: fix memory leak in ACPI

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Date:	Thu, 19 Dec 2013 20:38:21 +0800
From:	Jiang Liu <jiang.liu@...ux.intel.com>
To:	"Rafael J . Wysocki" <rafael.j.wysocki@...el.com>,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	Lv Zheng <lv.zheng@...el.com>, Len Brown <lenb@...nel.org>,
	David Airlie <airlied@...ux.ie>
Cc:	Jiang Liu <jiang.liu@...ux.intel.com>,
	Tony Luck <tony.luck@...el.com>, linux-acpi@...r.kernel.org,
	linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org
Subject: [Patch v2 12/13] nouveau: fix memory leak in ACPI _DSM related code

Fix memory leak in function nouveau_optimus_dsm() and nouveau_dsm().

Signed-off-by: Jiang Liu <jiang.liu@...ux.intel.com>
---
 drivers/gpu/drm/nouveau/nouveau_acpi.c |    5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/nouveau/nouveau_acpi.c b/drivers/gpu/drm/nouveau/nouveau_acpi.c
index 95c7404..03d4911 100644
--- a/drivers/gpu/drm/nouveau/nouveau_acpi.c
+++ b/drivers/gpu/drm/nouveau/nouveau_acpi.c
@@ -110,6 +110,7 @@ static int nouveau_optimus_dsm(acpi_handle handle, int func, int arg, uint32_t *
 
 	if (obj->type == ACPI_TYPE_INTEGER)
 		if (obj->integer.value == 0x80000002) {
+			kfree(output.pointer);
 			return -ENODEV;
 		}
 
@@ -156,8 +157,10 @@ static int nouveau_dsm(acpi_handle handle, int func, int arg, uint32_t *result)
 	obj = (union acpi_object *)output.pointer;
 
 	if (obj->type == ACPI_TYPE_INTEGER)
-		if (obj->integer.value == 0x80000002)
+		if (obj->integer.value == 0x80000002) {
+			kfree(output.pointer);
 			return -ENODEV;
+		}
 
 	if (obj->type == ACPI_TYPE_BUFFER) {
 		if (obj->buffer.length == 4 && result) {
-- 
1.7.10.4

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