Hi Dinghao,
Thank you for the patch.
On Wed, Aug 19, 2020 at 04:22:28PM +0800, Dinghao Liu wrote:
> When verify_crc_source() fails, source needs to be freed.
> However, current code is returning directly and ends up
> leaking memory.
>
> Fixes: c0811a7d5befe ("drm/crc: Cleanup crtc_crc_open function")
I think the issue was introduced in d5cc15a0c66e ("drm: crc: Introduce
verify_crc_source callback"). Apart from that,
Reviewed-by: Laurent Pinchart <laurent.pinch...@ideasonboard.com>
> Signed-off-by: Dinghao Liu <dinghao....@zju.edu.cn>
> ---
> drivers/gpu/drm/drm_debugfs_crc.c | 4 +++-
> 1 file changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/drm_debugfs_crc.c
> b/drivers/gpu/drm/drm_debugfs_crc.c
> index 5d67a41f7c3a..3dd70d813f69 100644
> --- a/drivers/gpu/drm/drm_debugfs_crc.c
> +++ b/drivers/gpu/drm/drm_debugfs_crc.c
> @@ -144,8 +144,10 @@ static ssize_t crc_control_write(struct file *file,
> const char __user *ubuf,
> source[len - 1] = '\0';
>
> ret = crtc->funcs->verify_crc_source(crtc, source, &values_cnt);
> - if (ret)
> + if (ret) {
> + kfree(source);
> return ret;
> + }
>
> spin_lock_irq(&crc->lock);
>
--
Regards,
Laurent Pinchart
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