Message-Id: <200612211531.kBLFVuZ7013023@turing-police.cc.vt.edu>
To: Alistair John Strachan <s0348365@sms.ed.ac.uk>
Cc: Chuck Ebbert <76306.1226@compuserve.com>, linux-kernel@vger.kernel.org
Subject: Re: Oops in 2.6.19.1
In-Reply-To: Your message of "Wed, 20 Dec 2006 22:15:50 GMT."
             <200612202215.50315.s0348365@sms.ed.ac.uk>
From: Valdis.Kletnieks@vt.edu
References: <200612201550_MC3-1-D5C7-74C6@compuserve.com>
            <200612202215.50315.s0348365@sms.ed.ac.uk>
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Date: Thu, 21 Dec 2006 10:31:56 -0500
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On Wed, 20 Dec 2006 22:15:50 GMT, Alistair John Strachan said:
> Seems pretty unlikely on a 4 year old Via Epia. Never had any problems with it
> before now.
> 
> Maybe a cosmic ray event? ;-)

More likely a stray alpha particle from a radioactive decay in the actual chip
casing - I saw some research a while back that said that the average commodity
system should *expect* to see 1 or 2 alpha-induced single-bit errors per year,
and the chance that *you* saw the event was directly related to whether the
memory had ECC, and how much of the other circuitry had ECC on it....

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