diff options
| author | Wen Yang <wenyang@linux.alibaba.com> | 2019-11-30 21:08:42 +0800 |
|---|---|---|
| committer | Enric Balletbo i Serra <enric.balletbo@collabora.com> | 2019-12-02 12:14:42 +0100 |
| commit | 856a0a6e2d09d31fd8f00cc1fc6645196a509d56 (patch) | |
| tree | 575abfd3e15af1a79f88cdb4f73b4ca9c4e5cc01 /drivers/platform | |
| parent | 74c166b58895a7b536d6434235b23b51e64adf68 (diff) | |
platform/chrome: wilco_ec: fix use after free issue
This is caused by dereferencing 'dev_data' after put_device() in
the telem_device_remove() function.
This patch just moves the put_device() down a bit to avoid this
issue.
Fixes: 1210d1e6bad1 ("platform/chrome: wilco_ec: Add telemetry char device interface")
Signed-off-by: Wen Yang <wenyang@linux.alibaba.com>
Cc: Benson Leung <bleung@chromium.org>
Cc: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Cc: Nick Crews <ncrews@chromium.org>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Diffstat (limited to 'drivers/platform')
| -rw-r--r-- | drivers/platform/chrome/wilco_ec/telemetry.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/platform/chrome/wilco_ec/telemetry.c b/drivers/platform/chrome/wilco_ec/telemetry.c index b9d03c33d8dc..1176d543191a 100644 --- a/drivers/platform/chrome/wilco_ec/telemetry.c +++ b/drivers/platform/chrome/wilco_ec/telemetry.c @@ -406,8 +406,8 @@ static int telem_device_remove(struct platform_device *pdev) struct telem_device_data *dev_data = platform_get_drvdata(pdev); cdev_device_del(&dev_data->cdev, &dev_data->dev); - put_device(&dev_data->dev); ida_simple_remove(&telem_ida, MINOR(dev_data->dev.devt)); + put_device(&dev_data->dev); return 0; } |