diff options
| author | Nicolas Boichat <drinkcat@chromium.org> | 2020-09-03 03:05:58 +0300 |
|---|---|---|
| committer | Bjorn Andersson <bjorn.andersson@linaro.org> | 2020-09-15 06:43:24 +0300 |
| commit | 231331b2dbd71487159a0400d9ffd967eb0d0e08 (patch) | |
| tree | 9e4c301e2904354a19adb9e9ac659af32ba9accf /drivers/rpmsg/mtk_rpmsg.c | |
| parent | e69ee0cf655e8e0c4a80f4319e36019b74f17639 (diff) | |
| download | linux-231331b2dbd71487159a0400d9ffd967eb0d0e08.tar.xz | |
rpmsg: Avoid double-free in mtk_rpmsg_register_device
If rpmsg_register_device fails, it will call
mtk_rpmsg_release_device which already frees mdev.
Fixes: 7017996951fd ("rpmsg: add rpmsg support for mt8183 SCP.")
Signed-off-by: Nicolas Boichat <drinkcat@chromium.org>
Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Link: https://lore.kernel.org/r/20200903080547.v3.1.I56cf27cd59f4013bd074dc622c8b8248b034a4cc@changeid
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Diffstat (limited to 'drivers/rpmsg/mtk_rpmsg.c')
| -rw-r--r-- | drivers/rpmsg/mtk_rpmsg.c | 9 |
1 files changed, 1 insertions, 8 deletions
diff --git a/drivers/rpmsg/mtk_rpmsg.c b/drivers/rpmsg/mtk_rpmsg.c index 83f2b8804ee9..96a17ec29140 100644 --- a/drivers/rpmsg/mtk_rpmsg.c +++ b/drivers/rpmsg/mtk_rpmsg.c @@ -200,7 +200,6 @@ static int mtk_rpmsg_register_device(struct mtk_rpmsg_rproc_subdev *mtk_subdev, struct rpmsg_device *rpdev; struct mtk_rpmsg_device *mdev; struct platform_device *pdev = mtk_subdev->pdev; - int ret; mdev = kzalloc(sizeof(*mdev), GFP_KERNEL); if (!mdev) @@ -219,13 +218,7 @@ static int mtk_rpmsg_register_device(struct mtk_rpmsg_rproc_subdev *mtk_subdev, rpdev->dev.parent = &pdev->dev; rpdev->dev.release = mtk_rpmsg_release_device; - ret = rpmsg_register_device(rpdev); - if (ret) { - kfree(mdev); - return ret; - } - - return 0; + return rpmsg_register_device(rpdev); } static void mtk_register_device_work_function(struct work_struct *register_work) |