linux-kernel - Re: [PATCH linux-next 2/3] drivers/platform/x86/intel: fix a memory leak in intel_vsec_add

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Date:   Wed, 08 Mar 2023 10:12:20 -0800
From:   "David E. Box" <david.e.box@...ux.intel.com>
To:     Dongliang Mu <dzm91@...t.edu.cn>,
        Hans de Goede <hdegoede@...hat.com>,
        Mark Gross <markgross@...nel.org>
Cc:     platform-driver-x86@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH linux-next 2/3] drivers/platform/x86/intel: fix a memory
 leak in intel_vsec_add_aux

Hi Dongliang,

Thanks for your patch. Do cc the mailing list next time.

Reviewed-by: David E. Box <david.e.box@...ux.intel.com>

On Wed, 2023-03-08 at 21:55 +0800, Dongliang Mu wrote:
> The first error handling code in intel_vsec_add_aux misses the
> deallocation of intel_vsec_dev->resource.
> 
> Fix this by adding kfree(intel_vsec_dev->resource) in the error handling
> code.
> 
> Signed-off-by: Dongliang Mu <dzm91@...t.edu.cn>
> ---
>  drivers/platform/x86/intel/vsec.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/platform/x86/intel/vsec.c
> b/drivers/platform/x86/intel/vsec.c
> index 13decf36c6de..2311c16cb975 100644
> --- a/drivers/platform/x86/intel/vsec.c
> +++ b/drivers/platform/x86/intel/vsec.c
> @@ -154,6 +154,7 @@ int intel_vsec_add_aux(struct pci_dev *pdev, struct device
> *parent,
>         ret = ida_alloc(intel_vsec_dev->ida, GFP_KERNEL);
>         mutex_unlock(&vsec_ida_lock);
>         if (ret < 0) {
> +               kfree(intel_vsec_dev->resource);
>                 kfree(intel_vsec_dev);
>                 return ret;
>         }