diff mbox series

[v2,2/3] rpmsg: virtio: fix possible double free in rpmsg_virtio_add_ctrl_dev()

Message ID 20220426060536.15594-3-hbh25y@gmail.com (mailing list archive)
State Queued
Headers show
Series rpmsg: virtio: fix posseble double free | expand

Commit Message

Hangyu Hua April 26, 2022, 6:05 a.m. UTC
vch will be free in virtio_rpmsg_release_device() when
rpmsg_ctrldev_register_device() fails. There is no need to call
kfree() again.

Fixes: c486682ae1e2 ("rpmsg: virtio: Register the rpmsg_char device")
Signed-off-by: Hangyu Hua <hbh25y@gmail.com>
Tested-by: Arnaud Pouliquen <arnaud.pouliquen@foss.st.com>
---
 drivers/rpmsg/virtio_rpmsg_bus.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/drivers/rpmsg/virtio_rpmsg_bus.c b/drivers/rpmsg/virtio_rpmsg_bus.c
index 0130d0ba548c..291fc1cfab7f 100644
--- a/drivers/rpmsg/virtio_rpmsg_bus.c
+++ b/drivers/rpmsg/virtio_rpmsg_bus.c
@@ -851,7 +851,7 @@  static struct rpmsg_device *rpmsg_virtio_add_ctrl_dev(struct virtio_device *vdev
 
 	err = rpmsg_ctrldev_register_device(rpdev_ctrl);
 	if (err) {
-		kfree(vch);
+		/* vch will be free in virtio_rpmsg_release_device() */
 		return ERR_PTR(err);
 	}