Simpler Navigation for Servers and Operating Systems
Completed: a much simpler Servers and Operating Systems section of the Community. We combined many of the older boards, so you won't have to click through so many levels to get at the information you need. Check the consolidated boards here as many sub-forums are now single boards.
Operating System - Tru64 Unix
cancel
Showing results for 
Search instead for 
Did you mean: 

Kernel memory fault , system crashed

S Bhat
Occasional Contributor

Kernel memory fault , system crashed


Hello ,

I am facing a problem with our Tru64 V4.0d box. It has crashed due to Kernel memory fault. After booting it is working fine.

The error log shows ..

********************************* ENTRY 6. *********************************

----- EVENT INFORMATION -----

EVENT CLASS ERROR EVENT
OS EVENT TYPE 302. PANIC
SEQUENCE NUMBER 93.
OPERATING SYSTEM DEC OSF/1
OCCURRED/LOGGED ON Wed Nov 1 17:03:10 2006
OCCURRED ON SYSTEM bwgb550
SYSTEM ID x00070016
SYSTYPE x00000000
PROCESSOR COUNT 2.
PROCESSOR WHO LOGGED x00000001
MESSAGE panic (cpu 1): kernel memory fault

********************************* ENTRY 7. *********************************


messages file shows...

Nov 1 18:05:26 vmunix:
Nov 1 18:05:26 vmunix: trap: invalid memory read access from kernel mode
Nov 1 18:05:26 vmunix:
Nov 1 18:05:26 vmunix: faulting virtual address: 0x000000000000000c
Nov 1 18:05:26 vmunix: pc of faulting instruction: 0xfffffc00004725d8
Nov 1 18:05:27 vmunix: ra contents at time of fault: 0xfffffc00002b50ac
Nov 1 18:05:27 vmunix: sp contents at time of fault: 0xffffffffaa48f758
Nov 1 18:05:27 vmunix:
Nov 1 18:05:27 vmunix: panic (cpu 1): kernel memory fault
Nov 1 18:05:27 vmunix: syncing disks... d


Patch kit installed is - DUV40DAS0007-20000816 TCR150. The patch 948.00 in this patch kit contains the solution for "trap: invalid memory read access from kernel mode" Error. I realy dont know why server is crashing once in a month.

Could anyone throw some light on this?

One Disk (Mirrored) in Non-system Domain is corrupted and Other mirrored disk is Fine . Is this problem related to system crash??

Please help... Thsnks in advance...
Shashi


1 REPLY
Greg Yates
Valued Contributor

Re: Kernel memory fault , system crashed

Shashi,

It's hard to determine from what you've sent. Perhaps a posting of the crash-data file (/var/adm/crash) might help. You are a couple of patch kits behind, and it's quite possible that this particular kmf is already fixed in the later kits. You could also log a call to get some analysis, and as long as it doesn't require engineering resources, we can probably give you some direction.

Question, since this happens once a month, is there something happening at this time that is unique (to the rest of the month)?

Greg