linux-kernel - [PATCH 4.19 075/211] media: vsp1: fix memory leak of dl on error return path

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Message-Id: <20191003154504.857975194@linuxfoundation.org>
Date:   Thu,  3 Oct 2019 17:52:21 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Colin Ian King <colin.king@...onical.com>,
        Kieran Bingham <kieran.bingham+renesas@...asonboard.com>,
        Laurent Pinchart <laurent.pinchart+renesas@...asonboard.com>,
        Mauro Carvalho Chehab <mchehab+samsung@...nel.org>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 4.19 075/211] media: vsp1: fix memory leak of dl on error return path

From: Colin Ian King <colin.king@...onical.com>

[ Upstream commit 70c55c1ad1a76e804ee5330e134674f5d2741cb7 ]

Currently when the call vsp1_dl_body_get fails and returns null the
error return path leaks the allocation of dl. Fix this by kfree'ing
dl before returning.

Addresses-Coverity: ("Resource leak")

Fixes: 5d7936b8e27d ("media: vsp1: Convert display lists to use new body pool")
Signed-off-by: Colin Ian King <colin.king@...onical.com>
Reviewed-by: Kieran Bingham <kieran.bingham+renesas@...asonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@...asonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@...nel.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/media/platform/vsp1/vsp1_dl.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/media/platform/vsp1/vsp1_dl.c b/drivers/media/platform/vsp1/vsp1_dl.c
index 26289adaf658c..a5634ca85a316 100644
--- a/drivers/media/platform/vsp1/vsp1_dl.c
+++ b/drivers/media/platform/vsp1/vsp1_dl.c
@@ -557,8 +557,10 @@ static struct vsp1_dl_list *vsp1_dl_list_alloc(struct vsp1_dl_manager *dlm)
 
 	/* Get a default body for our list. */
 	dl->body0 = vsp1_dl_body_get(dlm->pool);
-	if (!dl->body0)
+	if (!dl->body0) {
+		kfree(dl);
 		return NULL;
+	}
 
 	header_offset = dl->body0->max_entries * sizeof(*dl->body0->entries);
 
-- 
2.20.1