FreeBSD 7.0-BETA3 JDK16 libthr crash

Arno J. Klaassen arno at
Tue Nov 27 07:31:41 PST 2007

"Andrew Tulloch" <andrew.tulloch at> writes:

> Whilst testing a java webapp initially with an embedded jetty and then
> running within tomcat (www/tomcat6) I seem to be reapeatedly able to
> crash java with a signal 6 related to libthr. This is all running on
> 7.0-BETA3 with SCHED_ULE on a HP DL360 G5 with 2x Xeon E5320 (Quad core)
> and 4GB ram.
> I found the following error in tomcat 6 steddr.log:
> Fatal error 'mutex is on list' at line 359 in file
> /usr/src/lib/libthr/thread/thr_mutex.c (errno = 60) 

this looks like what I get with 7.0-BETA3 with SCHED_ULE on
a 2x Opteron 285 (Dual core) with my own java program :

  Fatal error 'mutex is on list' at line 432 in file /files/bsd/src7/lib/libthr/thread/thr_mutex.c (errno = 0)

I use jdk15 :

java version "1.5.0_13-p7"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_13-p7-toor_16_nov_2007_16_38)
Java HotSpot(TM) 64-Bit Server VM (build 1.5.0_13-p7-toor_16_nov_2007_16_38, mixed mode)

I play with 

  options         SCHED_ULE

but no combination "just works" (and only SCHED_ULE gives for now
the above error). The same program does "just work" on [67]-stable
UP and mono-processor dual-core; always jdk15.


Best, Arno

> Java version:
> # java -version
> java version "1.6.0_03-p3" Java(TM) SE Runtime Environment (build
> 1.6.0_03-p3-root_22_nov_2007_15_55-b00)
> Java HotSpot(TM) 64-Bit Server VM (build
> 1.6.0_03-p3-root_22_nov_2007_15_55-b00, mixed mode) 
> Backtrace from the crash attached.
> Any assistance in solving this would be appreciated.
> Thanks in advance,
> Andrew
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  Arno J. Klaassen

  8 rue des Haies
  F-75020 Paris, France

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