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From: Gavin Atkinson <gavin.atkinson@ury.york.ac.uk>
To: John Baldwin <jhb@FreeBSD.org>
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Date: Tue, 09 Aug 2005 17:02:15 +0100
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Cc: freebsd-current@FreeBSD.org
Subject: Re: 6.0-BETA2 DRM/witness panic: Assertion j < 1000 failed at
	/usr/src/sys/kern/subr_witness.c:1513
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On Tue, 2005-08-09 at 10:50 -0400, John Baldwin wrote:
> On Tuesday 09 August 2005 07:57 am, Gavin Atkinson wrote:
> > Hi,
> >
> > I have a regular panic (3 times a day) on a system running 6.0-BETA2
> > which was very stable under 5.4. dmesg available at
> > http://www.devrandom.co.uk/freebsd/dmesg-buffy-20050809 . The panic
> > seems to relate to DRM, I have a ATI Radeon QY RV100 7000/VE card.
> 
> Do a 'show witness', it looks like witness has a cycle somehow.  Normally 
> these can only occur if there is a cycle in the static lock order.

http://www.devrandom.co.uk/freebsd/sh-witness-buffy-20050809

Gavin