Vmark intermittent fail with 1.5.0-beta-b26 C2 on AMD64 with SuSE8 64

JDK version
=============
java version "1.5.0-beta"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0-beta-b26)
Java HotSpot(TM) 64-Bit Server VM (build 1.5.0-beta-b26, mixed mode)

Platform
=============
Linux jtg-amd1 2.4.19-SMP #1 SMP Mon Mar 31 23:48:08 UTC 2003 x86_64 unknown

Error message
=============
# An unexpected error has been detected by HotSpot Virtual Machine:
#
# SIGSEGV (0xb) at pc=0x0000002a6a1345e0, pid=15137, tid=272651
#
# Java VM: Java HotSpot(TM) 64-Bit Server VM (1.5.0-beta-b26 mixed mode)
# Problematic frame:
# C 0x0000002a6a1345e0

VM Arguments:
jvm_args: -Xmx128m -Xverify:none -Dinstall.root=/net/jtgb4u4c.sfbay/export/sail8
/bigapps/ws/master/dist/volano/vmark2.1.2/
java_command: COM.volano.Mark -run -port 8000 -host jtg-amd1

OS:SuSE SLES-8 (AMD64)
VERSION = 8.1

uname:Linux 2.4.19-SMP #1 SMP Mon Mar 31 23:48:08 UTC 2003 x86_64
libc:glibc 2.2.5 stable linuxthreads (floating stack)
rlimit: STACK 2044k, CORE 0k, NPROC 8192, NOFILE 4096, AS infinity
load average:17.20 18.88 21.48

CPU:total 2(active 2)

Memory: 4k page, physical 1020992k(185312k free), swap 1052248k(1052248k free)

Notes
=============
*How to reproduce bug:
telnet to the hosts shown on the web for linux test machine with root/!ncffpi! as id/passwd
goto /bt to execute script and /bs to get the running results
****take an example from jtg-amd1 with vmark problem:****
execute /bs/runvmark.ksh -server
cd to /bt/xxx.xxx-server to get the results
###@###.### 2003-11-05