linux-kernel - [PATCH 5.4 086/340] media: media/pci: Fix memleak in empress

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Message-Id: <20210301161052.558675614@linuxfoundation.org>
Date:   Mon,  1 Mar 2021 17:10:30 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Dinghao Liu <dinghao.liu@....edu.cn>,
        Hans Verkuil <hverkuil-cisco@...all.nl>,
        Mauro Carvalho Chehab <mchehab+huawei@...nel.org>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.4 086/340] media: media/pci: Fix memleak in empress_init

From: Dinghao Liu <dinghao.liu@....edu.cn>

[ Upstream commit 15d0c52241ecb1c9d802506bff6f5c3f7872c0df ]

When vb2_queue_init() fails, dev->empress_dev
should be released just like other error handling
paths.

Fixes: 2ada815fc48bb ("[media] saa7134: convert to vb2")
Signed-off-by: Dinghao Liu <dinghao.liu@....edu.cn>
Signed-off-by: Hans Verkuil <hverkuil-cisco@...all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@...nel.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/media/pci/saa7134/saa7134-empress.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/media/pci/saa7134/saa7134-empress.c b/drivers/media/pci/saa7134/saa7134-empress.c
index cb65d345fd3e9..e2666d1c68964 100644
--- a/drivers/media/pci/saa7134/saa7134-empress.c
+++ b/drivers/media/pci/saa7134/saa7134-empress.c
@@ -282,8 +282,11 @@ static int empress_init(struct saa7134_dev *dev)
 	q->lock = &dev->lock;
 	q->dev = &dev->pci->dev;
 	err = vb2_queue_init(q);
-	if (err)
+	if (err) {
+		video_device_release(dev->empress_dev);
+		dev->empress_dev = NULL;
 		return err;
+	}
 	dev->empress_dev->queue = q;
 	dev->empress_dev->device_caps = V4L2_CAP_READWRITE | V4L2_CAP_STREAMING |
 					V4L2_CAP_VIDEO_CAPTURE;
-- 
2.27.0