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Date:	Tue, 08 Feb 2011 10:52:40 +0100
From:	Clemens Ladisch <>
To:	dave b <>
CC:	Linux Kernel <>
Subject: Re: I do not know if this is the correct place to ask about this

dave b wrote:
> I do not know if this is the correct place to ask about this but...
> [Hardware Error]:

This is a hardware error that was detected by the kernel.

> I have only seen the following output output twice
> ... Corrected error
> ... L3 ECC data cache error.

There was a wrong bit in your CPU's level 3 cache, but with the help of
the redundant error correction bits, this was caught and corrected.

(If possible, enable background scrubbing of the caches in the BIOS ECC
settings to catch these errors earlier.)

If this is an overclocked CPU or one with an unlocked core, you deserve
what you got.  Otherwise, if this happens repeatedly, it indicates
a hardware defect, and your warranty should cover this.

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