Panic (cpu 0): kernel memory fault

From: Jim Fitzmaurice <jpfitz_at_fnal.gov>
Date: Mon, 16 Jul 2001 14:31:10 -0500

Hello,

    I've found lots of entries in the archives, this seems like a common
problem, but not much in the way of summaries.

    I have a 4100 (2-CPU's 1GB Memory), running Tru64 V5.1 PK3. A few weeks
after the upgrade to 5.1, several days after updating to PK3, I started
getting "panic (cpu 0): kernel memory fault" at random intervals. The
machine won't stays up for more than a day, usually failing within a few
hours. We replaced the memory, but the same errors continue with no change.
Prior to the upgrade we added couple new cards, a second DEGPA Gigabit
Ethernet card, and a Memory Channel card, but I don't see how they could
possibly be related to these errors.

    To make the problem even more confusing, we have an identical 4100
(2-CPU's 1GB Memory), running Tru64 V5.1 PK3 and it works just fine! The
ONLY difference between these two machines is, the failing one has 466MHz
CPU's and the other has 600MHz CPU's, all other cards and adapters are the
same.

    It's getting a little frustrating, can anybody help? Here's the
information from "dia".

----------------------------------------------------------------------------
-------
 Logging OS 2. Digital UNIX
 System Architecture 2. Alpha
 Event sequence number 35.
 Timestamp of occurrence 12-JUL-2001 15:30:56
 Host name XXXXX

 System type register x00000016 Alpha 4000/1200 Series
 Number of CPUs (mpnum) x00000002
 CPU logging event (mperr) x00000000

 Event validity 1. O/S claims event is valid
 Event severity 1. Severe Priority
 Entry type 302. ASCII Panic Message Type

 SWI Minor class 9. ASCII Message
 SWI Minor sub class 1. Panic

 ASCII Message panic (cpu 0): kernel memory fault
----------------------------------------------------------------------------
----------

 It look as though we still have a memory problem, but with brand new
memory...? Maybe it's something else that just looks like a memory problem,
but really isn't?

Any help would be appreciated.

Thanks,

Jim Fitzmaurice
jpfitz_at_fnal.gov

UNIX is very user friendly, It's just very particular about who it makes
friends with.
Received on Mon Jul 16 2001 - 19:31:46 NZST

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