Re: [PATCH] tegra-hsp: fix a missing-check bug in tegra_hsp_doorbell_create()

Gen Zhang
2019-06-08T16:11:55Z

On Thu, May 30, 2019 at 09:19:20AM +0800, Gen Zhang wrote:
> In tegra_hsp_doorbell_create(), 'db->name' is allocated by
> devm_kstrdup_const(). It returns NULL when fails. So 'db->name' should
> be checked.
>
> Signed-off-by: Gen Zhang <blackgod016574@gmail.com>
> Acked-by: Thierry Reding <treding@nvidia.com>
> ---
> diff --git a/drivers/mailbox/tegra-hsp.c b/drivers/mailbox/tegra-hsp.c
> index 11fc9fd..b613c46 100644
> --- a/drivers/mailbox/tegra-hsp.c
> +++ b/drivers/mailbox/tegra-hsp.c
> @@ -292,6 +292,8 @@ tegra_hsp_doorbell_create(struct tegra_hsp *hsp, const char *name,
> db->channel.hsp = hsp;
>
> db->name = devm_kstrdup_const(hsp->dev, name, GFP_KERNEL);
> + if (!db->name)
> + return ERR_PTR(-ENOMEM);
> db->master = master;
> db->index = index;
>
> ---
Can anyone look into this patch? It's acked by Thierry Reding
<treding@nvidia.com>.

Thanks
Gen