linux-kernel - [PATCH review for 3.18 12/12] [media] bt8xx: fix memory leak

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Message-ID: <20171007223752.25085-12-alexander.levin@verizon.com>
Date:   Sat, 7 Oct 2017 22:38:01 +0000
From:   "Levin, Alexander (Sasha Levin)" <alexander.levin@...izon.com>
To:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "stable@...r.kernel.org" <stable@...r.kernel.org>
Cc:     Sudip Mukherjee <sudipm.mukherjee@...il.com>,
        Sudip Mukherjee <sudip.mukherjee@...ethink.co.uk>,
        Hans Verkuil <hans.verkuil@...co.com>,
        Mauro Carvalho Chehab <mchehab@...pensource.com>,
        "Levin, Alexander (Sasha Levin)" <alexander.levin@...izon.com>
Subject: [PATCH review for 3.18 12/12] [media] bt8xx: fix memory leak

From: Sudip Mukherjee <sudipm.mukherjee@...il.com>

[ Upstream commit 6792eb0cf9310ec240b7e7c9bfa86dff4c758c68 ]

If dvb_attach() fails then we were just printing an error message and
exiting but the memory allocated to state was not released.

Signed-off-by: Sudip Mukherjee <sudip.mukherjee@...ethink.co.uk>
Signed-off-by: Hans Verkuil <hans.verkuil@...co.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@...pensource.com>
Signed-off-by: Sasha Levin <alexander.levin@...izon.com>
---
 drivers/media/pci/bt8xx/dvb-bt8xx.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/media/pci/bt8xx/dvb-bt8xx.c b/drivers/media/pci/bt8xx/dvb-bt8xx.c
index d407244fd1bc..bd0f5b195188 100644
--- a/drivers/media/pci/bt8xx/dvb-bt8xx.c
+++ b/drivers/media/pci/bt8xx/dvb-bt8xx.c
@@ -680,6 +680,7 @@ static void frontend_init(struct dvb_bt8xx_card *card, u32 type)
 		/*	DST is not a frontend, attaching the ASIC	*/
 		if (dvb_attach(dst_attach, state, &card->dvb_adapter) == NULL) {
 			pr_err("%s: Could not find a Twinhan DST\n", __func__);
+			kfree(state);
 			break;
 		}
 		/*	Attach other DST peripherals if any		*/
-- 
2.11.0