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Date:      Thu, 6 Oct 2005 13:55:56 -0400
From:      John Baldwin <jhb@FreeBSD.org>
To:        Gavin Atkinson <gavin.atkinson@ury.york.ac.uk>
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
Message-ID:  <200510061355.56903.jhb@FreeBSD.org>
In-Reply-To: <1128598440.25106.13.camel@buffy.york.ac.uk>
References:  <1123588622.893.15.camel@buffy.york.ac.uk> <200509291210.38799.jhb@FreeBSD.org> <1128598440.25106.13.camel@buffy.york.ac.uk>

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On Thursday 06 October 2005 07:34 am, Gavin Atkinson wrote:
> On Thu, 2005-09-29 at 12:10 -0400, John Baldwin wrote:
> > On Tuesday 09 August 2005 12:02 pm, Gavin Atkinson wrote:
> > > 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
> >
> > Do you still get this panic on more recent 6.0?
>
> I've been running a 6.0 from Friday for a week now without seeing this
> panic, so I suspect it's fixed.  However, I don't remember seeing any
> commits which look like they were responsible for fixing it, is it
> possible that it's just been masked by some other commit?  I'm happy to
> step back and find the responsible commit, unless you're happy that it
> was fixed for certain.
>
> Gavin

Well, I'm not sure how you could even have triggered the panic in the first 
place.  If you can't reproduce it that is fine with me for now.

-- 
John Baldwin <jhb@FreeBSD.org>  <><  http://www.FreeBSD.org/~jhb/
"Power Users Use the Power to Serve"  =  http://www.FreeBSD.org



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