BigApps VolanoTest crash JVM Client VM (build 10.0-b22, mixed mode, sharing). I can't reproduce it again.

java version "1.6.0_06-ea"
Java(TM) SE Runtime Environment (build 1.6.0_06-ea-b01)
Java HotSpot(TM) Client VM (build 10.0-b22, mixed mode, sharing)

Mode: -client
Adhock keys: -Xincgc

        Solaris 10 8/07 s10s_u4wos_12b SPARC
           Copyright 2007 Sun Microsystems, Inc. All Rights Reserved.
                        Use is subject to license terms.
                            Assembled 16 August 2007


COM.volano.ao Version 2.5.0.9
Copyright (C) 1996-2002 Volano LLC. All rights reserved.
Creating users for room number 1 ...
Creating users for room number 2 ...
Creating users for room number 3 ...
Creating users for room number 4 ...
Creating users for room number 5 ...
Creating users for room number 6 ...
Creating users for room number 7 ...
Creating users for room number 8 ...
Creating users for room number 9 ...
Creating users for room number 10 ...
Java heap: 268 KB in use, 7552 KB available (4% in use).
Running the test ...
[Wed Mar 05 19:05:41 GMT 2008] Error reading from 129.156.233.27. (java.net.SocketException: Connection reset)
#
# An unexpected error has been detected by Java Runtime Environment:
#
# SIGSEGV (0xb) at pc=0xfeaaa644, pid=8597, tid=1642558
#
# Java VM: Java HotSpot(TM) Client VM (10.0-b22 mixed mode solaris-sparc)
# Problematic frame:
# V [libjvm.so+0x2aa644]
#
# If you would like to submit a bug report, please visit:
# http://java.sun.com/webapps/bugreport/crash.jsp
#

--------------- T H R E A D ---------------

Current thread (0x008e1800): JavaThread "Receiver-821256" [_thread_in_vm, id=1642558, stack(0xde000000,0xde080000)]

siginfo:si_signo=SIGSEGV: si_errno=0, si_code=1 (SEGV_MAPERR), si_addr=0x00000038

Registers:
 O0=0xfc400224 O1=0x005de65c O2=0xde07ee78 O3=0xfecf68bc
 O4=0x00000002 O5=0xde07ede8 O6=0xde07ed10 O7=0xfeaaa5ec
 G1=0x001d9b58 G2=0xfee3eae0 G3=0x00010ae0 G4=0xfc400224
 G5=0xde07f728 G6=0x00000000 G7=0xfbfc6800 Y=0x00000000
 PC=0xfeaaa644 nPC=0xfeaaa648


Top of Stack: (sp=0xde07ed10)
0xde07ed10: 00920d18 00017c00 00000008 fffffffc
0xde07ed20: fee2e000 00000010 00017ce8 fee45ce8
0xde07ed30: 00010800 005de65c de07ee78 de07ede8
0xde07ed40: 005de65c 00000000 de07ed70 feaa7540
0xde07ed50: 00000000 00000000 00000000 00000000
0xde07ed60: 00000000 00000000 00000000 00000000
0xde07ed70: 00920d18 00017c00 00000010 fffffffc
0xde07ed80: 005de5d8 005de678 de07ee7c fee45ce8

Instructions: (pc=0xfeaaa644)
0xfeaaa634: 31 00 00 42 86 1e 22 e0 fa 06 60 00 84 05 00 03
0xfeaaa644: f0 07 60 38 c2 00 a0 00 f8 00 60 04 80 a7 00 12

Stack: [0xde000000,0xde080000], sp=0xde07ed10, free space=507k
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
V [libjvm.so+0x2aa644]
V [libjvm.so+0x2a7548]
V [libjvm.so+0x4f18d0]
V [libjvm.so+0x4f19c0]
V [libjvm.so+0x1ba848]
V [libjvm.so+0x1baba8]
V [libjvm.so+0x1bba90]
V [libjvm.so+0x49ee28]
V [libjvm.so+0x18af48]
v ~RuntimeStub::monitorenter_nofpu Runtime1 stub
J COM.volano.p.a(LCOM/volano/e;LCOM/volano/as;)V
J COM.volano.p.update(Ljava/util/Observable;Ljava/lang/Object;)V
J java.util.Observable.notifyObservers(Ljava/lang/Object;)V
J COM.volano.e.run()V
J java.lang.Thread.run()V
v ~BufferBlob::StubRoutines (1)
V [libjvm.so+0xdefac]
V [libjvm.so+0x2e1488]
V [libjvm.so+0xf14b4]
V [libjvm.so+0xf1434]
V [libjvm.so+0x4b2c18]
V [libjvm.so+0x4256dc]

Java frames: (J=compiled Java code, j=interpreted, Vv=VM code)
v ~RuntimeStub::monitorenter_nofpu Runtime1 stub
J COM.volano.p.a(LCOM/volano/e;LCOM/volano/as;)V
J COM.volano.p.update(Ljava/util/Observable;Ljava/lang/Object;)V
J java.util.Observable.notifyObservers(Ljava/lang/Object;)V
J COM.volano.e.run()V
J java.lang.Thread.run()V
v ~BufferBlob::StubRoutines (1)

Full core file - see attach.

Full logs:

http://latte.ireland/results/1.6.0_06/Build01/VolanoTestrun.8574.-client/hs_err_pid8597.log
http://latte.ireland/results/1.6.0_06/Build01/VolanoTestrun.8574.-client/
Stack trace added to description to help others find same bug.

--------------------------------------------------------------
Stack: [0xde000000,0xde080000], sp=0xde07ed10, free space=507k
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
V [libjvm.so+0x2aa644];; __1cFframeGsender6kMpnLRegisterMap__0_+0x5c
V [libjvm.so+0x2a7548];; __1cFframeLreal_sender6kMpnLRegisterMap__0_+0x18
V [libjvm.so+0x4f18d0];; __1cGvframeGsender6kM_p0_+0xb4
V [libjvm.so+0x4f19c0];; __1cGvframeLjava_sender6kM_pnKjavaVFrame__+0x48
V [libjvm.so+0x1ba848];; __1cbBget_or_compute_monitor_info6FpnKJavaThread__pnNGrowableArray4CpnLMonitorInfo____+0x2a4
V [libjvm.so+0x1baba8];; __1cLrevoke_bias6FpnHoopDesc_bbpnKJavaThread__nNBiasedLockingJCondition__+0x338
V [libjvm.so+0x1bba90];; __1cNBiasedLockingRrevoke_and_rebias6FnGHandle_bpnGThread__n0AJCondition__+0x29c
V [libjvm.so+0x49ee28];; __1cSObjectSynchronizerKfast_enter6FnGHandle_pnJBasicLock_bpnGThread__v_+0x74
V [libjvm.so+0x18af48];; __1cIRuntime1Mmonitorenter6FpnKJavaThread_pnHoopDesc_pnPBasicObjectLock__v_+0xe0
v ~RuntimeStub::monitorenter_nofpu Runtime1 stub
J COM.volano.p.a(LCOM/volano/e;LCOM/volano/as;)V
J COM.volano.p.update(Ljava/util/Observable;Ljava/lang/Object;)V
J java.util.Observable.notifyObservers(Ljava/lang/Object;)V
J COM.volano.e.run()V
J java.lang.Thread.run()V
v ~BufferBlob::StubRoutines (1)
V [libjvm.so+0xdefac];; __1cJJavaCallsLcall_helper6FpnJJavaValue_pnMmethodHandle_pnRJavaCallArguments_pnGThread__v_+0x1dc
V [libjvm.so+0x2e1488];; __1cJJavaCallsMcall_virtual6FpnJJavaValue_nLKlassHandle_nMsymbolHandle_4pnRJavaCallArguments_pnGThread__v_+0xf8
V [libjvm.so+0xf14b4];; __1cJJavaCallsMcall_virtual6FpnJJavaValue_nGHandle_nLKlassHandle_nMsymbolHandle_5pnGThread__v_+0x70
V [libjvm.so+0xf1434];; __1cMthread_entry6FpnKJavaThread_pnGThread__v_+0x110
V [libjvm.so+0x4b2c18];; __1cKJavaThreadRthread_main_inner6M_v_+0x50
V [libjvm.so+0x4256dc];; java_start+0x178

Java frames: (J=compiled Java code, j=interpreted, Vv=VM code)
v ~RuntimeStub::monitorenter_nofpu Runtime1 stub
J COM.volano.p.a(LCOM/volano/e;LCOM/volano/as;)V
J COM.volano.p.update(Ljava/util/Observable;Ljava/lang/Object;)V
J java.util.Observable.notifyObservers(Ljava/lang/Object;)V
J COM.volano.e.run()V
J java.lang.Thread.run()V
v ~BufferBlob::StubRoutines (1)