Another alpha panic
Wilko Bulte
wkb at freebie.xs4all.nl
Wed Apr 14 14:20:10 PDT 2004
On Wed, Apr 14, 2004 at 05:05:19PM -0400, Andrew Gallatin wrote:
>
> John Baldwin writes:
> > On Sunday 11 April 2004 05:33 am, Kris Kennaway wrote:
> > > Not that I've had any luck getting someone to take a look at the last
> > > half-dozen alpha panics I've reported, but:
> > >
> > > panic: pmap_emulate_reference(0xfffffc0019436a00, 0xfffffe0014495e68, 0,
> > > 1): pa 0xb0a0000 not managed at line 2585 in file
> > > /a/asami/portbuild/alpha/src-client/sys/alpha/alpha/pmap.c Stack backtrace:
> > > db_print_backtrace() at db_print_backtrace+0x18
> > > backtrace() at backtrace+0x2c
> > > __panic() at __panic+0x150
> > > pmap_emulate_reference() at pmap_emulate_reference+0x15c
> > > trap() at trap+0x39c
> > > XentMM() at XentMM+0x2c
> > > --- memory management fault (from ipl 7) ---
> > > pmap_activate() at pmap_activate+0xb4
> > > Lcs1() at Lcs1+0x1c
> > > --- root of call graph ---
> >
> > This is a VM-related panic. Perhaps alc@ might have an idea. There might be
> > a reference fault on a K0SEG address or some other silly bug.
>
> I just googled and saw that at least 2 of these have come with the
> same stack (context-switch(), pmap_activate()). What does
> pmap_activate+0xb4 map to in your kernel?
>
> What sort of machine? Is this UP or SMP?
Most likely a DS10 from the ports cluster.
--
Wilko Bulte wilko at FreeBSD.org
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