linux-kernel - Re: [PATCH 1/2] hwmon: (asus_wmi_ec

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Message-ID: <20211130144300.GA269056@roeck-us.net>
Date:   Tue, 30 Nov 2021 06:43:00 -0800
From:   Guenter Roeck <linux@...ck-us.net>
To:     Dan Carpenter <dan.carpenter@...cle.com>
Cc:     Eugene Shalygin <eugene.shalygin@...il.com>,
        Denis Pauk <pauk.denis@...il.com>,
        Jean Delvare <jdelvare@...e.com>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        linux-hwmon@...r.kernel.org, linux-kernel@...r.kernel.org,
        kernel-janitors@...r.kernel.org
Subject: Re: [PATCH 1/2] hwmon: (asus_wmi_ec_sensors) fix array overflow

On Tue, Nov 30, 2021 at 01:50:34PM +0300, Dan Carpenter wrote:
> Smatch detected an array out of bounds error:
> 
>     drivers/hwmon/asus_wmi_ec_sensors.c:562 asus_wmi_ec_configure_sensor_setup()
>     error: buffer overflow 'hwmon_attributes' 8 <= 9
> 
> The hwmon_attributes[] array needs to be declared with "hwmon_max"
> elements.
> 
> Fixes: c04c7f7bfcbe ("hwmon: (asus_wmi_ec_sensors) Support B550 Asus WMI.")
> Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com>

Applied.

Thanks,
Guenter

> ---
>  drivers/hwmon/asus_wmi_ec_sensors.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/hwmon/asus_wmi_ec_sensors.c b/drivers/hwmon/asus_wmi_ec_sensors.c
> index f612abc66c89..22a1459305a7 100644
> --- a/drivers/hwmon/asus_wmi_ec_sensors.c
> +++ b/drivers/hwmon/asus_wmi_ec_sensors.c
> @@ -41,7 +41,7 @@
>  #define ASUSWMI_MAX_BUF_LEN		128
>  #define SENSOR_LABEL_LEN		16
>  
> -static u32 hwmon_attributes[] = {
> +static u32 hwmon_attributes[hwmon_max] = {
>  	[hwmon_chip]	= HWMON_C_REGISTER_TZ,
>  	[hwmon_temp]	= HWMON_T_INPUT | HWMON_T_LABEL,
>  	[hwmon_in]	= HWMON_I_INPUT | HWMON_I_LABEL,