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From: Miaoqian Lin <linmq006@gmail.com>
To: Bjorn Andersson <bjorn.andersson@linaro.org>,
	Mathieu Poirier <mathieu.poirier@linaro.org>,
	Shawn Guo <shawnguo@kernel.org>,
	Sascha Hauer <s.hauer@pengutronix.de>,
	Pengutronix Kernel Team <kernel@pengutronix.de>,
	Fabio Estevam <festevam@gmail.com>,
	NXP Linux Team <linux-imx@nxp.com>, Peng Fan <peng.fan@nxp.com>,
	Oleksij Rempel <linux@rempel-privat.de>,
	linux-remoteproc@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org
Cc: linmq006@gmail.com
Subject: [PATCH] remoteproc: imx_rproc: Fix refcount leak in imx_rproc_addr_init
Date: Thu, 12 May 2022 08:55:58 +0400	[thread overview]
Message-ID: <20220512045558.7142-1-linmq006@gmail.com> (raw)

of_parse_phandle() returns a node pointer with refcount
incremented, we should use of_node_put() on it when not needed anymore.
This function has two paths missing of_node_put().

Fixes: 6e962bfe56b9 ("remoteproc: imx_rproc: add missing of_node_put")
Fixes: a0ff4aa6f010 ("remoteproc: imx_rproc: add a NXP/Freescale imx_rproc driver")
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
---
 drivers/remoteproc/imx_rproc.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/remoteproc/imx_rproc.c b/drivers/remoteproc/imx_rproc.c
index 7a096f1891e6..6363ed40854a 100644
--- a/drivers/remoteproc/imx_rproc.c
+++ b/drivers/remoteproc/imx_rproc.c
@@ -559,16 +559,17 @@ static int imx_rproc_addr_init(struct imx_rproc *priv,
 
 		node = of_parse_phandle(np, "memory-region", a);
 		/* Not map vdevbuffer, vdevring region */
-		if (!strncmp(node->name, "vdev", strlen("vdev")))
+		if (!strncmp(node->name, "vdev", strlen("vdev"))) {
+			of_node_put(node);
 			continue;
+		}
 		err = of_address_to_resource(node, 0, &res);
+		of_node_put(node);
 		if (err) {
 			dev_err(dev, "unable to resolve memory region\n");
 			return err;
 		}
 
-		of_node_put(node);
-
 		if (b >= IMX_RPROC_MEM_MAX)
 			break;
 
-- 
2.25.1


WARNING: multiple messages have this Message-ID (diff)
From: Miaoqian Lin <linmq006@gmail.com>
To: Bjorn Andersson <bjorn.andersson@linaro.org>,
	Mathieu Poirier <mathieu.poirier@linaro.org>,
	Shawn Guo <shawnguo@kernel.org>,
	Sascha Hauer <s.hauer@pengutronix.de>,
	Pengutronix Kernel Team <kernel@pengutronix.de>,
	Fabio Estevam <festevam@gmail.com>,
	NXP Linux Team <linux-imx@nxp.com>, Peng Fan <peng.fan@nxp.com>,
	Oleksij Rempel <linux@rempel-privat.de>,
	linux-remoteproc@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org
Cc: linmq006@gmail.com
Subject: [PATCH] remoteproc: imx_rproc: Fix refcount leak in imx_rproc_addr_init
Date: Thu, 12 May 2022 08:55:58 +0400	[thread overview]
Message-ID: <20220512045558.7142-1-linmq006@gmail.com> (raw)

of_parse_phandle() returns a node pointer with refcount
incremented, we should use of_node_put() on it when not needed anymore.
This function has two paths missing of_node_put().

Fixes: 6e962bfe56b9 ("remoteproc: imx_rproc: add missing of_node_put")
Fixes: a0ff4aa6f010 ("remoteproc: imx_rproc: add a NXP/Freescale imx_rproc driver")
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
---
 drivers/remoteproc/imx_rproc.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/remoteproc/imx_rproc.c b/drivers/remoteproc/imx_rproc.c
index 7a096f1891e6..6363ed40854a 100644
--- a/drivers/remoteproc/imx_rproc.c
+++ b/drivers/remoteproc/imx_rproc.c
@@ -559,16 +559,17 @@ static int imx_rproc_addr_init(struct imx_rproc *priv,
 
 		node = of_parse_phandle(np, "memory-region", a);
 		/* Not map vdevbuffer, vdevring region */
-		if (!strncmp(node->name, "vdev", strlen("vdev")))
+		if (!strncmp(node->name, "vdev", strlen("vdev"))) {
+			of_node_put(node);
 			continue;
+		}
 		err = of_address_to_resource(node, 0, &res);
+		of_node_put(node);
 		if (err) {
 			dev_err(dev, "unable to resolve memory region\n");
 			return err;
 		}
 
-		of_node_put(node);
-
 		if (b >= IMX_RPROC_MEM_MAX)
 			break;
 
-- 
2.25.1


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             reply	other threads:[~2022-05-12  4:56 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-05-12  4:55 Miaoqian Lin [this message]
2022-05-12  4:55 ` [PATCH] remoteproc: imx_rproc: Fix refcount leak in imx_rproc_addr_init Miaoqian Lin
2022-06-22 16:48 ` Mathieu Poirier
2022-06-22 16:48   ` Mathieu Poirier

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