From owner-freebsd-hackers  Fri Jun  8 12:12:46 2001
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Date: Fri, 8 Jun 2001 18:47:01 +0300 (EEST)
From: Giorgos Keramidas <keramidi@otenet.gr>
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To: Deepak Jain <deepak@ai.net>
Cc: <freebsd-hackers@FreeBSD.ORG>
Subject: Re: New error - lost data?
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On Fri, 8 Jun 2001, Deepak Jain wrote:

> I've never seen this error. Its been occuring randomly on this
> machine, sometimes as often as every few minutes, sometimes days
> apart.
>
> Others have seen this error (based on a Google search) but nothing recent
> and nothing that conclusive. This is a very standard config that has been
> stable for quite a while. The panic: malloc: lost data implies to me that
> something is misbehaving with its memory allocations.
>
> Is this a hardware issue or an application problem? The kernel is 4.1
> RELEASE. The RAM is ECC.

Well, this is definitely not an application problem.  Your kernel
panics before the malloc data for allocated/free memory is corrupt
somehow.  This seems to be a hardware problem.  Namely one of your
memory chips playing tricks on you.

I would start by removing a few RAM chips and seeing if this happens
when a particular set of them are being used.  If the problem persists
but only when a certain chip is present, you know whats wrong :)

-giorgos


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