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From: Daniel Stone <daniels@collabora.com>
To: Matt Roper <matthew.d.roper@intel.com>, intel-gfx@lists.freedesktop.org
Subject: Re: [PATCH i-g-t] kms_atomic: drop unnecessary connector looping from plane_primary test
Date: Fri, 26 Feb 2016 17:00:21 +0000	[thread overview]
Message-ID: <1456506021.14845.2.camel@collabora.com> (raw)
In-Reply-To: <1456505884-25882-1-git-send-email-matthew.d.roper@intel.com>

Hi,

On Fri, 2016-02-26 at 08:58 -0800, Matt Roper wrote:
> Local variable num_connectors is never initialized before being
> auto-incremented in the loop.  If we wind up with a non-zero garbage
> value, it will lead us to try to write to an out-of-bounds array
> index.
> We should probably initialize it to zero before use.
> 
> However on closer inspection, the plane_primary test doesn't actually
> wind up using the connector list or number of connectors, so just
> remove
> the whole block of code; it was probably brought in by accident as
> part
> of a copy-paste operation.

History rather than copy & paste; originally crtc_commit_*() was
inlined. But the rest of your analysis is totally correct; thanks for
finding this!

Reviewed-by: Daniel Stone <daniels@collabora.com>

Cheers,
Daniel
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  reply	other threads:[~2016-02-26 17:00 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-02-26 16:58 [PATCH i-g-t] kms_atomic: drop unnecessary connector looping from plane_primary test Matt Roper
2016-02-26 17:00 ` Daniel Stone [this message]
2016-02-26 17:21   ` Matt Roper

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