@@ -469,6 +469,7 @@ static int csi2rx_probe(struct platform_device *pdev)
return 0;
err_cleanup:
+ v4l2_async_nf_unregister(&csi2rx->notifier);
v4l2_async_nf_cleanup(&csi2rx->notifier);
err_free_priv:
kfree(csi2rx);
@@ -479,6 +480,8 @@ static int csi2rx_remove(struct platform_device *pdev)
{
struct csi2rx_priv *csi2rx = platform_get_drvdata(pdev);
+ v4l2_async_nf_unregister(&csi2rx->notifier);
+ v4l2_async_nf_cleanup(&csi2rx->notifier);
v4l2_async_unregister_subdev(&csi2rx->subdev);
kfree(csi2rx);
The notifier is added to the global notifier list when registered. When the module is removed, the struct csi2rx_priv in which the notifier is embedded, is destroyed. As a result the notifier list has a reference to a notifier that no longer exists. This causes invalid memory accesses when the list is iterated over. Similar for when the probe fails. Unregister and clean up the notifier to avoid this. Fixes: 1fc3b37f34f6 ("media: v4l: cadence: Add Cadence MIPI-CSI2 RX driver") Signed-off-by: Pratyush Yadav <p.yadav@ti.com> --- (no changes since v3) Changes in v3: - New in v3. drivers/media/platform/cadence/cdns-csi2rx.c | 3 +++ 1 file changed, 3 insertions(+)