Hi Wenwen,
On 18/08/2019 06:58, Wenwen Wang wrote:
> In fdp1_open(), 'ctx' is allocated through kzalloc(). However, it is not
> deallocated if v4l2_ctrl_new_std() fails, leading to a memory leak bug. To
> fix this issue, free 'ctx' before going to the 'done' label.
We could also free it up in the error path, with an if (ret) kfree(ctx);
and remove the kfree which is in the "if (IS_ERR(ctx->fh.m2m_ctx))" check.
But I think that doesn't gain much really. So this is ok by me... If you
prefer that method, then feel free to submit a v2,
Otherwise I think this is fine:
Reviewed-by: Kieran Bingham <kieran.bingham+renesas@xxxxxxxxxxxxxxxx>
> Signed-off-by: Wenwen Wang <wenwen@xxxxxxxxxx>
> ---
> drivers/media/platform/rcar_fdp1.c | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/drivers/media/platform/rcar_fdp1.c b/drivers/media/platform/rcar_fdp1.c
> index 43aae9b..9e4b330 100644
> --- a/drivers/media/platform/rcar_fdp1.c
> +++ b/drivers/media/platform/rcar_fdp1.c
> @@ -2122,6 +2122,7 @@ static int fdp1_open(struct file *file)
> if (ctx->hdl.error) {
> ret = ctx->hdl.error;
> v4l2_ctrl_handler_free(&ctx->hdl);
> + kfree(ctx);
> goto done;
> }
>
>
