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rpmsg: virtio: Fix possible double free in rpmsg_virtio_add_ctrl_dev()

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[ Upstream commit 1680939e9e ]

vch will be free in virtio_rpmsg_release_device() when
rpmsg_ctrldev_register_device() fails. There is no need to call
kfree() again.

Fixes: c486682ae1 ("rpmsg: virtio: Register the rpmsg_char device")
Signed-off-by: Hangyu Hua <hbh25y@gmail.com>
Tested-by: Arnaud Pouliquen <arnaud.pouliquen@foss.st.com>
Link: https://lore.kernel.org/r/20220426060536.15594-3-hbh25y@gmail.com
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Hangyu Hua
2022-04-26 14:05:35 +08:00
committed by Greg Kroah-Hartman
parent eaf37bb6b4
commit b94d40c792
1 changed files with 1 additions and 1 deletions
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2
drivers/rpmsg/virtio_rpmsg_bus.c
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@@ -842,7 +842,7 @@ static struct rpmsg_device *rpmsg_virtio_add_ctrl_dev(struct virtio_device *vdev
err = rpmsg_chrdev_register_device(rpdev_ctrl);
if (err) {
kfree(vch);
/* vch will be free in virtio_rpmsg_release_device() */
return ERR_PTR(err);
}