linux-kernel - Re: out-of-bounds array index

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Date:	Thu, 7 Feb 2008 11:03:18 -0800
From:	Jesse Barnes <jesse.barnes@...el.com>
To:	Jens Axboe <jens.axboe@...cle.com>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: out-of-bounds array index

On Thursday, February 07, 2008 10:56 am Jens Axboe wrote:
> Hi,
>
> Just saw this from gcc:
>
> drivers/char/drm/i915_drv.c: In function ?i915_suspend?:
> drivers/char/drm/i915_drv.c:173: warning: array subscript is above array
> bounds
>   CC [M]  drivers/char/drm/i915_dma.o
> drivers/char/drm/i915_drv.c: In function ?i915_resume?:
> drivers/char/drm/i915_drv.c:220: warning: array subscript is above array
> bounds
>
> It's this code:
>
>         dev_priv->saveGR[0x18] =
>                 i915_read_indexed(VGA_GR_INDEX, VGA_GR_DATA, 0x18);
>
> which looks legit, since saveGR is
>
>         u8 saveGR[24];
>
> It has been introduced by commit
> ba8bbcf6ff4650712f64c0ef61139c73898e2165, which seems to be you Jesse.

I'll take a look, thanks.

Jesse
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