6.0-BETA2 DRM/witness panic: Assertion j < 1000 failed at /usr/src/sys/kern/subr_witness.c:1513

Gavin Atkinson gavin.atkinson at ury.york.ac.uk
Thu Sep 29 09:24:39 PDT 2005


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 do with BETA3 from Sept 6th.  I'll update again (after re-adding
WITNESS etc to GENERIC) and test it again. 

Gavin


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