Another alpha panic

[Kris Kennaway]

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?

0xfffffc00005cf164 is in pmap_activate (/a/asami/portbuild/alpha/src-client/sys/alpha/alpha/pmap.c:2740).

This is a kernel from Mar 6.

> What sort of machine?  Is this UP or SMP?

Apr 11 19:11:40 axp0 kernel: COMPAQ AlphaServer DS10 466 MHz, 462MHz
Apr 11 19:11:40 axp0 kernel: 8192 byte page size, 1 processor.
Apr 11 19:11:40 axp0 kernel: CPU: EV6 (21264) major=8 minor=4 extensions=0x303<BWX,FIX,MVI,PRECISE>
Apr 11 19:11:40 axp0 kernel: OSF PAL rev: 0x1003300020133

Kris
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