linux-kernel - [PATCH 1/1] rpmsg: virtio_rpmsg_bus: Fix rpmsg_create

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Date:   Wed, 25 Jul 2018 23:08:36 +0200
From:   Loic Pallardy <loic.pallardy@...com>
To:     <bjorn.andersson@...aro.org>, <ohad@...ery.com>
CC:     <linux-remoteproc@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <arnaud.pouliquen@...com>, <benjamin.gaignard@...aro.org>,
        Loic Pallardy <loic.pallardy@...com>
Subject: [PATCH 1/1] rpmsg: virtio_rpmsg_bus: Fix rpmsg_create_channel memory leak

In case of rpmsg_register_device() failure, vch previously
allocated must be free.

fixes: 6eed598a0491 ("rpmsg: Split off generic tail of create_channel()")

Signed-off-by: Loic Pallardy <loic.pallardy@...com>
---
 drivers/rpmsg/virtio_rpmsg_bus.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/rpmsg/virtio_rpmsg_bus.c b/drivers/rpmsg/virtio_rpmsg_bus.c
index 664f957..10f927e 100644
--- a/drivers/rpmsg/virtio_rpmsg_bus.c
+++ b/drivers/rpmsg/virtio_rpmsg_bus.c
@@ -431,8 +431,10 @@ static struct rpmsg_device *rpmsg_create_channel(struct virtproc_info *vrp,
 	rpdev->dev.parent = &vrp->vdev->dev;
 	rpdev->dev.release = virtio_rpmsg_release_device;
 	ret = rpmsg_register_device(rpdev);
-	if (ret)
+	if (ret) {
+		kfree(vch);
 		return NULL;
+	}
 
 	return rpdev;
 }
-- 
1.9.1