There is a bigapps crash after running VolanoTest for about 17 hours
with rc build 64 under RHAS 4.0 AMD.

Here is the test's log messages:

jtg-amd10.sfbay (please contact the submitter for the login)
=========================================================
current status
Dec 17 09:41 VolanoTestrun.2082.-server/run.vtest.out
Dec 17 09:41 VolanoTestrun.2082.-server/vtestserver.out

VolanoTestrun.2082.-server status
VolanoTest failed after 0 days: 17 hours 38 minutes
server pid: 13309
Java HotSpot(TM) 64-Bit Server VM (build 1.6.0-rc-b64, compiled mode)
Unexpected Error
SIGSEGV (0xb) at pc=0x000002d0000002b0, pid=17100, tid=1085528416
To debug, run 'gdb /proc/17100/exe 17100'; then switch to thread 1085528416
Enter 'yes' to launch gdb automatically (PATH must include gdb)
client failure, check client log run.vtest.out

Stack Trace:
------------
(gdb) where
#0 0x000000371f48e9c5 in __nanosleep_nocancel () from /lib64/tls/libc.so.6
#1 0x000000371f48e840 in sleep () from /lib64/tls/libc.so.6
#2 0x0000002a95a0989f in os::message_box () from
/usr/j2se/jre/lib/amd64/server/libjvm.so
#3 0x0000002a95b41b76 in VMError::show_message_box () from
/usr/j2se/jre/lib/amd64/server/libjvm.so
#4 0x0000002a95b41645 in VMError::report_and_die () from
/usr/j2se/jre/lib/amd64/server/libjvm.so
#5 0x0000002a95a0b3b3 in JVM_handle_linux_signal () from
/usr/j2se/jre/lib/amd64/server/libjvm.so
#6 0x0000002a95a08dce in signalHandler () from
/usr/j2se/jre/lib/amd64/server/libjvm.so
#7 <signal handler called>
#8 0x000002d0000002b0 in ?? ()
#9 0x0000002a959f547c in nmethod::total_size () from
/usr/j2se/jre/lib/amd64/server/libjvm.so
#10 0x0000002a95785e59 in CompileBroker::collect_statistics () from
/usr/j2se/jre/lib/amd64/server/libjvm.so
#11 0x0000002a95785704 in CompileBroker::invoke_compiler_on_method ()
from /usr/j2se/jre/lib/amd64/server/libjvm.so
#12 0x0000002a95784f76 in CompileBroker::compiler_thread_loop () from
/usr/j2se/jre/lib/amd64/server/libjvm.so
#13 0x0000002a95b0f839 in compiler_thread_entry () from
/usr/j2se/jre/lib/amd64/server/libjvm.so
#14 0x0000002a95b0a32e in JavaThread::run () from
/usr/j2se/jre/lib/amd64/server/libjvm.so
#15 0x0000002a95a0a4ee in java_start () from
/usr/j2se/jre/lib/amd64/server/libjvm.so
#16 0x000000371ff0613a in start_thread () from /lib64/tls/libpthread.so.0
#17 0x000000371f4c52b3 in clone () from /lib64/tls/libc.so.6
#18 0x0000000000000000 in ?? ()

uname -a
Linux jtg-amd10.SFBay.Sun.COM 2.6.9-5.ELsmp #1 SMP Wed Jan 5 19:29:47
EST 2005 x86_64 x86_64 x86_64 GNU/Linux

cat /proc/version
Linux version 2.6.9-5.ELsmp (###@###.###) (gcc
version 3.4.3 20041212 (Red Hat 3.4.3-9.EL4)) #1 SMP Wed Jan 5 19:29:47
EST 2005

CPU info:
2 x 2191.156 MHZ

model name : AMD Opteron(tm) Processor 248
stepping : 10
cpu MHz : 2191.156
cache size : 1024 KB

cat /proc/meminfo
MemTotal:2056532 kB

/usr/j2se/bin/java -version
java version "1.6.0-rc"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.6.0-rc-b64)
Java HotSpot(TM) 64-Bit Server VM (build 1.6.0-rc-b64, mixed mode)

flag used: " -server -Xcomp -XX:+UseConcMarkSweepGC "

Log and core file location:
/bt/VolanoTestrun.2082.-server

how to reproduce the failure.
1. export JAVA_HOME=<your java home>
2. execute the script /net/jtgb4u4c.sfbay/export/sail8/bigapps/tests/runvtest.ksh -server -Xcomp -XX:+UseConcMarkSweepGC