Sparc-10/512 crash (mutex not owned by thread)
------------------------------------------------------------------------
Something strange happened to our Sparc-10/512 today. Looks like
it just decided to reboot itself. There was no core file left in /,
so it didn't leaving a dump behind...
Checking /var/adm/messages shows:
======================================================================
May 6 15:45:50 sedan.tamu.edu unix: panic: mutex_adaptive_exit: mutex not owne
d by thread, lp fc5c15a0 owner fc4e5e00 lock ff waiters 0 curthread fc4e5e00
May 6 15:45:50 sedan.tamu.edu unix: syncing file systems... [2] 4 [2] 4 [2] 4
[2] 4 [2] 4 [2] 4 [2] 4 [2] 4 [2] 4 [2] 4 [2] 4 [2] 4 [2] 4 [2] 4 [2] 4 [2] 4 [
2] 4 [2] 4 [2] 4 [2] 4 done
May 6 15:45:50 sedan.tamu.edu unix: 5968 static and sysmap kernel pages
May 6 15:45:50 sedan.tamu.edu unix: SunOS Release 5.3 Version Generic_Patch [
UNIX(R) System V Release 4.0]
May 6 15:45:50 sedan.tamu.edu unix: Copyright (c) 1983-1993, Sun Microsystems,
Inc.
======================================================================
This is followed by the standard reboot messages.
Installed patches are
101316-01 101318-39 101329-10 101344-05
101317-06 101327-05 101331-03 101347-01
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It was pointed out that Solaris2.3 does not dump its core to / as
did 4.1.3 -- the "dump" files unix.o and vmcore.0 are written to
/var/crash/`uname -n`. These files are only written if then lines
requesting them in /etc/init.d/sysetup are uncommented. Since our
system hadn't requested the dumps, it's no surprise that they weren't
written! I have uncommented the appropriate lines to save the core
in case the machine crashes again so we can analyze what jobs were
running at the time that caused (?) the crash...
Several people recommended installing the latest set of recommended
patches for Solaris 2.3. Those patches that are available that are
more recent than the above are:
Patch-ID# 101317-08
Synopsis: SunOS 5.3: lp jumbo patch
Patch-ID# 101318-41
Synopsis: SunOS 5.3: Jumbo patch for kernel (includes libc, sendmail, lockd)
Patch-ID# 101329-13
Synopsis: SunOS 5.3: Jumbo NIS+ patch, automountd security, autofs and loopback mounts
I installed these patches, hopefully the latest kernel patch will help
things along. So far, we're still up and running, but, if it does
crash again, we'll have some more diagnostics to sort out the problem.
Many thanx to all who responded:
Ilkka Virtanen <ilkka@ee.oulu.fi>
Eric OLEMANS <Eric.Olemans@esat.kuleuven.ac.be>
Glenn Satchell <glenn@uniq.com.au>
Sean Boran <Boran.Sean@ch.swissbank.com>
Brad Burdick <bburdick@radio.com>
--Michael Zika
