linux-kernel - Re: [PATCH] acer-wmi: fix memory leaks in wmab

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Date:	Fri, 9 Jul 2010 21:53:55 +0100
From:	Carlos Corbacho <carlos@...angeworlds.co.uk>
To:	Axel Lin <axel.lin@...il.com>
Cc:	"linux-kernel" <linux-kernel@...r.kernel.org>,
	Matthew Garrett <mjg@...hat.com>,
	Thomas Renninger <trenn@...e.de>,
	Alan Jenkins <alan-jenkins@...fmail.co.uk>,
	platform-driver-x86@...r.kernel.org
Subject: Re: [PATCH] acer-wmi: fix memory leaks in wmab_execute error path

On Friday 09 July 2010 04:51:15 Axel Lin wrote:
> When acpi_evaluate_object() is passed ACPI_ALLOCATE_BUFFER,
> the caller must kfree the returned buffer if AE_OK is returned.
> 
> Call Trace:
> wmab_execute
>   -> wmi_evaluate_method
>     -> acpi_evaluate_object
> 
> Thus if callers of wmab_execute() pass ACPI_ALLOCATE_BUFFER,
> the return buffer must be kfreed if wmab_execute return AE_OK.
> 
> Signed-off-by: Axel Lin <axel.lin@...il.com>

Acked-by: Carlos Corbacho <carlos@...angeworlds.co.uk>
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