linux-kernel - Re: [PATCH] ACPI: Fix memory leak in acpi_ev_asynch_execute_gpe

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Date:	Mon, 17 Jan 2011 09:47:11 +0800
From:	Lin Ming <ming.m.lin@...el.com>
To:	Jesper Juhl <jj@...osbits.net>
Cc:	"linux-acpi@...r.kernel.org" <linux-acpi@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Len Brown <lenb@...nel.org>
Subject: Re: [PATCH] ACPI: Fix memory leak in
 acpi_ev_asynch_execute_gpe_method().

On Mon, 2011-01-17 at 03:37 +0800, Jesper Juhl wrote:
> We will leak the memory allocated to 'local_gpe_event_info' if 
> 'acpi_ut_acquire_mutex()' fails or if 'acpi_ev_valid_gpe_event()' fails in 
> drivers/acpi/acpica/evgpe.c::acpi_ev_asynch_execute_gpe_method().
> 
> Signed-off-by: Jesper Juhl <jj@...osbits.net>
> ---
>  evgpe.c |    2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/drivers/acpi/acpica/evgpe.c b/drivers/acpi/acpica/evgpe.c
> index 7c339d3..b6de1fb 100644
> --- a/drivers/acpi/acpica/evgpe.c
> +++ b/drivers/acpi/acpica/evgpe.c
> @@ -471,6 +471,7 @@ static void ACPI_SYSTEM_XFACE acpi_ev_asynch_execute_gpe_method(void *context)
>  
>  	status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS);
>  	if (ACPI_FAILURE(status)) {
> +		ACPI_FREE(local_gpe_event_info);
>  		return_VOID;
>  	}
>  
> @@ -478,6 +479,7 @@ static void ACPI_SYSTEM_XFACE acpi_ev_asynch_execute_gpe_method(void *context)
>  
>  	if (!acpi_ev_valid_gpe_event(gpe_event_info)) {
>  		status = acpi_ut_release_mutex(ACPI_MTX_EVENTS);
> +		ACPI_FREE(local_gpe_event_info);
>  		return_VOID;
>  	}
>  
> 

Acked-by: Lin Ming <ming.m.lin@...el.com>

Thanks.


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