linux-kernel - Re: [PATCH linux-next v2 3/3] drivers/platform/x86/intel: fix a memory leak in intel_vsec_add

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Date:   Mon, 20 Mar 2023 11:31:34 +0100
From:   Hans de Goede <hdegoede@...hat.com>
To:     Dongliang Mu <dzm91@...t.edu.cn>,
        "David E. Box" <david.e.box@...ux.intel.com>,
        Mark Gross <markgross@...nel.org>
Cc:     platform-driver-x86@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH linux-next v2 3/3] drivers/platform/x86/intel: fix a
 memory leak in intel_vsec_add_aux

Hi,

On 3/9/23 05:01, 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.
> 
> Reviewed-by: David E. Box <david.e.box@...ux.intel.com>
> Signed-off-by: Dongliang Mu <dzm91@...t.edu.cn>

Thank you for your patch, I've applied this patch (as first patch
in the series) to my review-hans branch:
https://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86.git/log/?h=review-hans

Note it will show up in my review-hans branch once I've pushed my
local branch there, which might take a while.

Once I've run some tests on this branch the patches there will be
added to the platform-drivers-x86/for-next branch and eventually
will be included in the pdx86 pull-request to Linus for the next
merge-window.

Regards,

Hans


> ---
>  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;
>  	}