linux-kernel - [PATCH] rpmsg: glink: Release driver

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Date:   Mon, 9 Jan 2023 14:38:18 -0800
From:   Bjorn Andersson <quic_bjorande@...cinc.com>
To:     Bjorn Andersson <andersson@...nel.org>,
        Mathieu Poirier <mathieu.poirier@...aro.org>
CC:     "open list:ARM/QUALCOMM SUPPORT" <linux-arm-msm@...r.kernel.org>,
        "open list:REMOTE PROCESSOR MESSAGING (RPMSG) SUBSYSTEM" 
        <linux-remoteproc@...r.kernel.org>,
        open list <linux-kernel@...r.kernel.org>,
        Chris Lew <quic_clew@...cinc.com>
Subject: [PATCH] rpmsg: glink: Release driver_override

Upon termination of the rpmsg_device, driver_override needs to be freed
to avoid leaking the potentially assigned string.

Fixes: 42cd402b8fd4 ("rpmsg: Fix kfree() of static memory on setting driver_override")
Fixes: 39e47767ec9b ("rpmsg: Add driver_override device attribute for rpmsg_device")
Signed-off-by: Bjorn Andersson <quic_bjorande@...cinc.com>
---
 drivers/rpmsg/qcom_glink_native.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/rpmsg/qcom_glink_native.c b/drivers/rpmsg/qcom_glink_native.c
index 8620eea1dc8a..046271e439c5 100644
--- a/drivers/rpmsg/qcom_glink_native.c
+++ b/drivers/rpmsg/qcom_glink_native.c
@@ -1454,6 +1454,7 @@ static void qcom_glink_rpdev_release(struct device *dev)
 {
 	struct rpmsg_device *rpdev = to_rpmsg_device(dev);
 
+	kfree(rpdev->driver_override);
 	kfree(rpdev);
 }
 
@@ -1697,6 +1698,7 @@ static void qcom_glink_device_release(struct device *dev)
 
 	/* Release qcom_glink_alloc_channel() reference */
 	kref_put(&channel->refcount, qcom_glink_channel_release);
+	kfree(rpdev->driver_override);
 	kfree(rpdev);
 }
 
-- 
2.37.3