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

From: Kris Kennaway (kris_at_obsecurity.org)
Date: 09/29/05

  • Next message: John Baldwin: "Re: biodone panics" 
    Date: Thu, 29 Sep 2005 12:35:41 -0400
To: Gavin Atkinson <gavin.atkinson@ury.york.ac.uk>

    On Thu, Sep 29, 2005 at 05:32:03PM +0100, Gavin Atkinson wrote:
    > On Thu, 2005-09-29 at 17:24 +0100, 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 do with BETA3 from Sept 6th. I'll update again (after re-adding
    > > WITNESS etc to GENERIC) and test it again.
    >
    > I should have said that I also stepped back in time several times, and
    > was still getting the panic with kernel from sources dated April 15th,
    > ruling out the major DRM upgrade in July. I couldn't get any of the
    > screensavers that easily provoke the panic to run on a pre-April 15th
    > system, even after recompiling all ports.

    You're not using modules, right? Or at least, you're remembering to
    recompile them all each time you update your kernel?

    Kris

  • Next message: John Baldwin: "Re: biodone panics"

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