Re: [patch 4/4 v2] sony-laptop: potential null dereference

Mattia Dongili
2011-02-27T21:06:06Z

Hi Matthew,

could you pick this and the other 3 up for next?

Thanks!

On Sun, Feb 27, 2011 at 05:13:25PM +0300, Dan Carpenter wrote:
> In the original code, if "device_enum" was NULL then it would
> dereference it when it printed the error message.
>
> Signed-off-by: Dan Carpenter <error27@gmail.com>

Acked-by: Mattia Dongili <malattia@linux.it>

> ---
> v2: Fixed the error message.
>
> diff --git a/drivers/platform/x86/sony-laptop.c b/drivers/platform/x86/sony-laptop.c
> index 0db9049..c24aa4a 100644
> --- a/drivers/platform/x86/sony-laptop.c
> +++ b/drivers/platform/x86/sony-laptop.c
> @@ -1311,7 +1311,11 @@ static void sony_nc_rfkill_setup(struct acpi_device *device)
> }
>
> device_enum = (union acpi_object *) buffer.pointer;
> - if (!device_enum || device_enum->type != ACPI_TYPE_BUFFER) {
> + if (!device_enum) {
> + pr_err(DRV_PFX "No SN06 return object.");
> + goto out_no_enum;
> + }
> + if (device_enum->type != ACPI_TYPE_BUFFER) {
> pr_err(DRV_PFX "Invalid SN06 return object 0x%.2x\n",
> device_enum->type);
> goto out_no_enum;
>
--
mattia
:wq!