linux-kernel - Re: [PATCH] drm/i915: Fix use of invalid array size for ring->sync

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Message-ID: <4D3B5915.7060206@gmail.com>
Date:	Sat, 22 Jan 2011 23:24:21 +0100
From:	Jiri Slaby <jirislaby@...il.com>
To:	Chris Wilson <chris@...is-wilson.co.uk>
CC:	Dave Airlie <airlied@...ux.ie>,
	Jesse Barnes <jbarnes@...tuousgeek.org>,
	linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org
Subject: Re: [PATCH] drm/i915: Fix use of invalid array size for ring->sync_seqno

On 01/21/2011 11:11 AM, Chris Wilson wrote:
> There are I915_NUM_RINGS-1 inter-ring synchronisation counters, but we
> were clearing I915_NUM_RINGS of them. Oops.
> 
> Reported-by: Jiri Slaby <jirislaby@...il.com>
> Signed-off-by: Chris Wilson <chris@...is-wilson.co.uk>
> ---
> 
> Jiri, does this catch the invalid array access? For 3 rings, there should
> only be 2 sync counters...

Yup, it's gone.

thanks,
--
js
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