linux-kernel - Re: [PATCH 1/2] platform/x86: dell-smbios-wmi: Correct a memory leak

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Date:   Mon, 10 Sep 2018 13:51:39 -0700
From:   Darren Hart <dvhart@...radead.org>
To:     Mario Limonciello <mario.limonciello@...l.com>
Cc:     Andy Shevchenko <andy.shevchenko@...il.com>,
        LKML <linux-kernel@...r.kernel.org>,
        platform-driver-x86@...r.kernel.org, stable@...r.kernel.org
Subject: Re: [PATCH 1/2] platform/x86: dell-smbios-wmi: Correct a memory leak

On Mon, Sep 10, 2018 at 01:01:52PM -0500, Mario Limonciello wrote:
> ACPI buffers were being allocated but never freed.
> 
> Reported-by: Pinzhen Xu <pinzhen.xu@...el.com>
> Signed-off-by: Mario Limonciello <mario.limonciello@...l.com>
> Cc: stable@...r.kernel.org

Thanks Mario and Pinzhen, both queued. That's an easy one to miss, the usage not
being particularly obvious.

> ---
>  drivers/platform/x86/dell-smbios-wmi.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/platform/x86/dell-smbios-wmi.c b/drivers/platform/x86/dell-smbios-wmi.c
> index 88afe56..cf2229e 100644
> --- a/drivers/platform/x86/dell-smbios-wmi.c
> +++ b/drivers/platform/x86/dell-smbios-wmi.c
> @@ -78,6 +78,7 @@ static int run_smbios_call(struct wmi_device *wdev)
>  	dev_dbg(&wdev->dev, "result: [%08x,%08x,%08x,%08x]\n",
>  		priv->buf->std.output[0], priv->buf->std.output[1],
>  		priv->buf->std.output[2], priv->buf->std.output[3]);
> +	kfree(output.pointer);
>  
>  	return 0;
>  }
> -- 
> 2.7.4
> 
> 

-- 
Darren Hart
VMware Open Source Technology Center