Seen in testing:

[2014-08-22T07:01:00.19] # To suppress the following error report, specify this argument
[2014-08-22T07:01:00.19] # after -XX: or in .hotspotrc:  SuppressErrorAt=/synchronizer.cpp:1177
[2014-08-22T07:01:00.19] #
[2014-08-22T07:01:00.19] # A fatal error has been detected by the Java Runtime Environment:
[2014-08-22T07:01:00.19] #
[2014-08-22T07:01:00.19] #  Internal Error (/opt/jprt/T/P1/201001.rwestrel/s/src/share/vm/runtime/synchronizer.cpp:1177), pid=22089, tid=140151763740416
[2014-08-22T07:01:00.19] #  assert(ObjectSynchronizer::verify_objmon_isinpool(inf)) failed: monitor is invalid
[2014-08-22T07:01:00.19] #
[2014-08-22T07:01:00.19] # JRE version: Java(TM) SE Runtime Environment (9.0-b26) (build 1.9.0-ea-fastdebug-b26)
[2014-08-22T07:01:00.19] # Java VM: Java HotSpot(TM) 64-Bit Server VM (1.9.0-fastdebug-internal-201408202010.rwestrel.8055153 compiled mode linux-amd64 compressed oops)
[2014-08-22T07:01:00.19] # Core dump written. Default location: /scratch/export_local/aurora/sandbox/results/ResultDir/testConcurrentHashMap/core or core.22089
[2014-08-22T07:01:00.19] #
[2014-08-22T07:01:00.19] # An error report file with more information is saved as:
[2014-08-22T07:01:00.19] # /scratch/export_local/aurora/sandbox/results/ResultDir/testConcurrentHashMap/hs_err_pid22089.log
[2014-08-22T07:01:00.20] #
[2014-08-22T07:01:00.20] # If you would like to submit a bug report, please visit:
[2014-08-22T07:01:00.20] #   http://bugreport.sun.com/bugreport/crash.jsp
[2014-08-22T07:01:00.20] #
[2014-08-22T07:01:00.20] Current thread is 140151763740416
[2014-08-22T07:01:00.20] Dumping core ...
[2014-08-22T07:01:03.60] # Test level exit status: 134