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Date: Tue, 31 Jan 2006 16:33:32 -0500
From: Kris Kennaway <kris@obsecurity.org>
To: Steve Kargl <sgk@troutmask.apl.washington.edu>
Message-ID: <20060131213332.GA15250@xor.obsecurity.org>
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Cc: freebsd-current@freebsd.org
Subject: Re: panic: Memory modified after free
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On Tue, Jan 31, 2006 at 01:22:09PM -0800, Steve Kargl wrote:
> The system is a dual proc Tyan K8S Pro with 12 GB of memory.
> The kernel is UP.  This was recorded by hand. I have the crash dump.
>=20
> Memory modified after free 0xffffff02505e0c00(504) val=3Ddeadc0dd @
> 0xffffff02505e0cd0
>=20
> panic: Most recently used by DEVFS1

Set up memguard to watch this malloc type in order to obtain useful
debugging.

Kris

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