Hi folks,
We just had a crash when someone mounted an AdvFS clone and did a cd
to it. We are running 3.2C (148) on a DEC 3000/500, firmware 6.2.
Anyone seen anything similar? Text written to /var/adm/messages
during boot was:
vmunix: trap: invalid memory read access from kernel mode
vmunix:
vmunix: faulting virtual address: 0x0000000000000004
vmunix: pc of faulting instruction: 0xfffffc00003cedb8
vmunix: ra contents at time of fault: 0xfffffc00003c4840
vmunix: sp contents at time of fault: 0xffffffff8d98b080
vmunix:
vmunix: panic (cpu 0): kernel memory fault
The clone was made fresh last night. It was used for a backup, then
unmounted and not mounted again before this person tried to make use
of it. There were no errors during the creation/mount/unmount
process. We have not changed our AdvFS configuration in any way
recently. There is nothing to be seen with uerf except an ERROR EVENT
PANIC "panic (cpu 0): kernel memory fault" entry between OPERATIONAL
EVENT SYSTEM STARTUP entries. This is the first crash we've had since
upgrading to 3.2C a couple of months ago as the machine has otherwise
been stable. After the machine rebooted we have been able to mount
the clone (same mount command) and use it without problems.
My only suspicion is because the person used su instead of su - to
switch to root. Can this have such a dramatic influence?
Would be very happy to supply the crash-data to anyone interested
enough to examine it.
Regards,
Jon Buchanan, Zuerich, Switzerland
[ Jonathan.Buchanan_at_ska.com ]
Received on Thu Jan 11 1996 - 12:48:20 NZDT