SUMMARY : System crashes but why ?

From: Daniel Clar (Daniel.Clar_at_supelec.fr)
Date: 09/25/03

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    Date: Thu, 25 Sep 2003 16:07:35 +0200
To: 'Daniel Clar' <Daniel.Clar@supelec.fr>, tru64-unix-managers@ornl.gov

    The original posting was :
    >
    > Hello Managers,
    >
    > Before calling the TSC, I want to understand a little why my AS1200 2CPUs
    > crashes from time to time (2 days without crash but very little activity,
    > then 2 crashes in 3 hours with high activity).
    >
    > uerf is just giving :
    >
    >
    > EVENT CLASS ERROR EVENT
    > OS EVENT TYPE 302. PANIC
    > SEQUENCE NUMBER 14.
    > OPERATING SYSTEM DEC OSF/1
    > OCCURRED/LOGGED ON Mon Sep 22 17:35:22 2003
    > OCCURRED ON SYSTEM xyz
    > SYSTEM ID x00070016
    > SYSTYPE x00000007
    > PROCESSOR COUNT 2.
    > PROCESSOR WHO LOGGED x00000001
    > MESSAGE panic (cpu 1): kernel memory fault
    >
    >
    > Looking at the crash-data file, I find :
    >
    >
    > trap: invalid memory read access from kernel mode
    >
    > faulting virtual address: 0x0000000000000001
    > pc of faulting instruction: 0xfffffc00003defb8
    > ra contents at time of fault: 0xfffffc0000454578
    > sp contents at time of fault: 0xfffffe048d2878a0
    >
    > panic (cpu 1): kernel memory fault
    > syncing disks...
    > trap: invalid memory write access from kernel mode
    >
    > faulting virtual address: 0x0000000000000000
    > pc of faulting instruction: 0xfffffc00004dc718
    > ra contents at time of fault: 0xfffffc00004dc6d4
    > sp contents at time of fault: 0xfffffe048cd6f8e0
    >
    > "
    >
    > Is there something obvious here ?
    >
    > Thank you for your help.
    >
    > Regards
    >
    > Daniel Clar
    > Computer Operations Manager
    > Supelec
    > France

    thank you to :

    Stan Horwitz [stan@temple.edu]
    Brusche, Johan [johan.brusche@hp.com]
    Pat OBrien [Pat.OBrien@choicepoint.com]
    Alan Rollow - Dr. File System's Home for Wayward Inodes.
    [alan@desdra.cxo.cpqcorp.net]
    And

    Dr Thomas.Blinn@HP.com [tpb@doctor.zk3.dec.com]
    Vincent, Jean-marc [jean-marc.vincent@hp.com]

    Who asked for the crash-data file.

    Jean-Marc Vincent gave the pointer to the available patch for Advfs.

    t64kit0019920-v51bb22-e-20030909.tar

    Daniel

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