Re: [PATCH] firmware: dmi: Check DMI structure length

From: Andy Shevchenko
Date: Thu Jun 01 2017 - 09:16:12 EST


On Thu, Jun 1, 2017 at 4:08 PM, Jean Delvare <jdelvare@xxxxxxx> wrote:
> Before accessing DMI data to record it for later, we should ensure
> that the DMI structures are large enough to contain the data in
> question.

> - const u8 *d = (u8 *) dm + index;
> + const u8 *d;

> + d = (u8 *) dm + index;

I think you may leave this as is and make it compiler's burden to optimize.

> - const u8 *d = (u8 *) dm + index;
> + const u8 *d;

> + d = (u8 *) dm + index;

Ditto.

> - int i, count = *(u8 *)(dm + 1);
> + int i, count;

> + count = *(u8 *)(dm + 1);

Ditto.

--
With Best Regards,
Andy Shevchenko