diff options
| author | Hangyu Hua <hbh25y@gmail.com> | 2022-04-26 09:05:34 +0300 |
|---|---|---|
| committer | Mathieu Poirier <mathieu.poirier@linaro.org> | 2022-04-26 18:23:41 +0300 |
| commit | c2eecefec5df1306eafce28ccdf1ca159a552ecc (patch) | |
| tree | 0d07092eeb23ebe340f685297d09a4a5976f941b /drivers/rpmsg | |
| parent | 1a358d35066487d228a68303d808bc4721c6b1b9 (diff) | |
| download | linux-c2eecefec5df1306eafce28ccdf1ca159a552ecc.tar.xz | |
rpmsg: virtio: Fix possible double free in rpmsg_probe()
vch will be free in virtio_rpmsg_release_device() when
rpmsg_ns_register_device() fails. There is no need to call kfree() again.
Fix this by changing error path from free_vch to free_ctrldev.
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>
Link: https://lore.kernel.org/r/20220426060536.15594-2-hbh25y@gmail.com
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Diffstat (limited to 'drivers/rpmsg')
| -rw-r--r-- | drivers/rpmsg/virtio_rpmsg_bus.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/drivers/rpmsg/virtio_rpmsg_bus.c b/drivers/rpmsg/virtio_rpmsg_bus.c index 3ede25b1f2e4..d4e453062062 100644 --- a/drivers/rpmsg/virtio_rpmsg_bus.c +++ b/drivers/rpmsg/virtio_rpmsg_bus.c @@ -973,7 +973,8 @@ static int rpmsg_probe(struct virtio_device *vdev) err = rpmsg_ns_register_device(rpdev_ns); if (err) - goto free_vch; + /* vch will be free in virtio_rpmsg_release_device() */ + goto free_ctrldev; } /* @@ -997,8 +998,6 @@ static int rpmsg_probe(struct virtio_device *vdev) return 0; -free_vch: - kfree(vch); free_ctrldev: rpmsg_virtio_del_ctrl_dev(rpdev_ctrl); free_coherent: |