linux-kernel - Re: [patch] power_meter: acpi_device_class "power_meter

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Date:	Tue, 23 Mar 2010 17:26:07 +0100
From:	Thomas Renninger <trenn@...e.de>
To:	Dan Carpenter <error27@...il.com>
Cc:	Len Brown <lenb@...nel.org>, "Darrick J. Wong" <djwong@...ibm.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Márton Németh <nm127@...email.hu>,
	Lin Ming <ming.m.lin@...el.com>, linux-acpi@...r.kernel.org,
	linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org
Subject: Re: [patch] power_meter: acpi_device_class "power_meter_resource" too long

On Friday 19 March 2010 12:49:20 Dan Carpenter wrote:
> acpi_device_class can only be 19 characters and a NULL terminator.
> 
> The current code has a buffer overflow in acpi_power_meter_add():
>        strcpy(acpi_device_class(device), ACPI_POWER_METER_CLASS);
Sounds as if it would be worth to add:
CC: stable@...nel.org
?
Same for processor_aggregator.

     Thomas
> 
> Signed-off-by: Dan Carpenter <error27@...il.com>
> ---
> Feel free to change the name to anything you like.
> 
> diff --git a/drivers/acpi/power_meter.c b/drivers/acpi/power_meter.c
> index 834c5af..31baa1e 100644
> --- a/drivers/acpi/power_meter.c
> +++ b/drivers/acpi/power_meter.c
> @@ -34,7 +34,7 @@
>  #define ACPI_POWER_METER_NAME		"power_meter"
>  ACPI_MODULE_NAME(ACPI_POWER_METER_NAME);
>  #define ACPI_POWER_METER_DEVICE_NAME	"Power Meter"
> -#define ACPI_POWER_METER_CLASS		"power_meter_resource"
> +#define ACPI_POWER_METER_CLASS		"pwr_meter_resource"
>  
>  #define NUM_SENSORS			17
>  
> --
--
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