linux-kernel - [PATCH] v4l: xilinx-vipp: Fix refcount leak in xvip_graph_dma

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <20220601042514.61780-1-linmq006@gmail.com>
Date:   Wed,  1 Jun 2022 08:25:14 +0400
From:   Miaoqian Lin <linmq006@...il.com>
To:     Hyun Kwon <hyun.kwon@...inx.com>,
        Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Michal Simek <michal.simek@...inx.com>,
        Radhey Shyam Pandey <radheys@...inx.com>,
        Hans Verkuil <hans.verkuil@...co.com>,
        linux-media@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Cc:     linmq006@...il.com
Subject: [PATCH] v4l: xilinx-vipp: Fix refcount leak in xvip_graph_dma_init

of_get_child_by_name() returns a node pointer with refcount
incremented, we should use of_node_put() on it when not need anymore.
Add missing of_node_put() to avoid refcount leak.

Fixes: df3305156f98 ("[media] v4l: xilinx: Add Xilinx Video IP core")
Signed-off-by: Miaoqian Lin <linmq006@...il.com>
---
 drivers/media/platform/xilinx/xilinx-vipp.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/media/platform/xilinx/xilinx-vipp.c b/drivers/media/platform/xilinx/xilinx-vipp.c
index f34f8b077e03..415579b63737 100644
--- a/drivers/media/platform/xilinx/xilinx-vipp.c
+++ b/drivers/media/platform/xilinx/xilinx-vipp.c
@@ -483,10 +483,12 @@ static int xvip_graph_dma_init(struct xvip_composite_device *xdev)
 		ret = xvip_graph_dma_init_one(xdev, port);
 		if (ret < 0) {
 			of_node_put(port);
+			of_node_put(ports);
 			return ret;
 		}
 	}
 
+	of_node_put(ports);
 	return 0;
 }
 
-- 
2.25.1