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From: Duncan Sands <duncan.sands@math.u-psud.fr>
To: 7eggert@gmx.de
Cc: mchehab@brturbo.com.br, Linux Kernel list <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] bttv: correct bttv_risc_packed buffer size
Date: Thu, 26 Jan 2006 09:02:29 +0100	[thread overview]
Message-ID: <200601260902.30382.duncan.sands@math.u-psud.fr> (raw)
In-Reply-To: <E1F1pWq-0001d1-JH@be1.lrz>

Hi Bodo,

> > This patch fixes the strange crashes I was seeing after using
> > my bttv card to watch television.  They were caused by a
> > buffer overflow in bttv_risc_packed.
> 
> <snip>
> 
> Would these errors e.g. cause a corruption of exactly four bytes at the start
> of random pages?

I don't think so.  It should cause either no corruption or at least 8 bytes worth
(it does pairs of 4 byte writes).  What you might see is an Oops when it tries to
write the first 4 bytes at the start of a page, because of a page fault, but then
the write doesn't happen and there is no corruption...

Best wishes,

Duncan.

  reply	other threads:[~2006-01-26  8:02 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <5yQ4M-7PJ-11@gated-at.bofh.it>
2006-01-25 18:37 ` Bodo Eggert
2006-01-26  8:02   ` Duncan Sands [this message]
2006-01-25 10:24 Duncan Sands

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