The resolution to my problem (original message posted below) was suggested
by our Sun support engineer (hope that's the correct title), Rick Weisner.
He suggested running 'test-all' from the PROM monitor and, sure enough, I
had a SIMM bank that was apparently not correctly seated. I was getting
errors indicating that addresses were not correctly mapped on bank U402. I
reseated the bank, retested, and the system came up OK. I am running
additional tests to make sure I don't have a bad SIMM bank, but at least the
'kmem_free: block already free' makes sense now.
Thanks to everyone involved!
-jls
============================================================================
My original query:
System: SparcClassic, 24MB RAM, 424MB HD, X453A 2nd Ethernet Interface,
SUNOS 4.1.3c, patch 101251-01 (for the X453A)
Problem: At times, with no consistant pattern other than a user running
OpenWindows 3.0 at the time of the crash, a SparcClassic serving as a router
between two subnets panics with the following:
Panic on cpu 0: kmem_free: block already free
syncing file systems...
At which point it freezes and must have its power cycled to reboot (L1-A
has no effect; I tried). /var/adm/messages does not log the occurance
either, which means it died so abruptly that it couldn't log it. In
addition, no core dump was produced.
I have looked through an extensive list of patches posted to the list
sometime back (I found it through WAIS, also available from the gopher at
sunsite) and no mention was close except for an old patch dating back to
4.0.3.
Any ideas? If so, please mail me and I will summarize. This is pretty
critical, folks, as a large chunk of my network depends on the health of
this system.
Thanks in advance,
Joel L. Seber | Dry humor is wasted around here.
SUN Workstation Laboratory Manager |
Center for Manufacturing Research | -Joel L. Seber
and Technology Utilization |
Tennessee Technological University | recursive, adj.
Cookeville, TN 38505 | See 'recursive'
|
jls2013@tntech.edu |
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