panic (cpu 0): kernel memory fault

From: Andy Malato (andym@oak.njit.edu)
Date: Wed Apr 27 2005 - 16:19:01 EDT

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I just noticed that one of our Tru64 systems had rebooted itself a couple
of days ago. I found the following the /var/adm/messages :

Apr 21 21:12:20 cams1 vmunix:
Apr 21 21:12:20 cams1 vmunix: trap: invalid memory read access from kernel
mode
Apr 21 21:12:20 cams1 vmunix:
Apr 21 21:12:20 cams1 vmunix: faulting virtual address:
0x0000000000000000
Apr 21 21:12:20 cams1 vmunix: pc of faulting instruction:
0xfffffc0000645ad4
Apr 21 21:12:20 cams1 vmunix: ra contents at time of fault:
0xfffffc00005c2f14
Apr 21 21:12:20 cams1 vmunix: sp contents at time of fault:
0xfffffe0544e575f0
Apr 21 21:12:20 cams1 vmunix:
Apr 21 21:12:20 cams1 vmunix: panic (cpu 0): kernel memory fault
Apr 21 21:12:20 cams1 vmunix: syncing disks... done

Does anyone know what the cause of the above is? This system has been
running fine for years without problems. Does this indicate a hardware
problem, such as with the system's memory or CPU ?

Thanks,

        ---Andy

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