Re: [PATCH -next] mtd: docg3: Fix a possible memory leak of mtd->name

[Boris Brezillon]

On Wed, 23 Jan 2019 14:59:43 +0800
YueHaibing <yuehaibing@xxxxxxxxxx> wrote:

> In case DOC_CHIPID_G3, mtd->name should be freed in the
> err handling path, which is alloced by kasprintf.
> 
> Fixes: ae9d4934b2d7 ("mtd: docg3: add multiple floor support")
> Signed-off-by: YueHaibing <yuehaibing@xxxxxxxxxx>
> ---
>  drivers/mtd/devices/docg3.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/mtd/devices/docg3.c b/drivers/mtd/devices/docg3.c
> index 60ddc38..cbd25f9 100644
> --- a/drivers/mtd/devices/docg3.c
> +++ b/drivers/mtd/devices/docg3.c
> @@ -1867,6 +1867,7 @@ doc_probe_device(struct docg3_cascade *cascade, int floor, struct device *dev)
>  
>  nomem4:
>  	kfree(docg3->bbt);
> +	kfree(mtd->name);

Please use devm_kasprintf() instead.

>  nomem3:
>  	kfree(mtd);
>  nomem2: