RAS: Tomcat hang with hopper_12 c1 on linux redhat 7.2

JDK version
=============
java version "1.4.1-beta"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.1-beta-b12)
Java HotSpot(TM) Client VM (build 1.4.1-beta-b12, mixed mode)

Platform
=============
Linux jtg-linux1 2.4.9-31smp #1 SMP

Error message
=============
server hang with any futher message!
The thread 3 stack trace is below:
#4 0x4041ad5a in JVM_handle_linux_signal ()
   from /usr/j2se/jre/lib/i586/client/libjvm.so
#5 0x40419c24 in signalHandler () from /usr/j2se/jre/lib/i586/client/libjvm.so
#6 0x40032963 in pthread_sighandler_rt (signo=11, si=0xbfe0ac90,
    uc=0xbfe0ad10) at signals.c:121
#7 <signal handler called>
#8 0x40481a94 in oopDesc::size_given_klass ()
   from /usr/j2se/jre/lib/i586/client/libjvm.so
#9 0x4034afb8 in DefNewGeneration::copy_to_survivor_space ()
   from /usr/j2se/jre/lib/i586/client/libjvm.so
#10 0x403661fd in instanceKlass::oop_oop_iterate_nv ()
   from /usr/j2se/jre/lib/i586/client/libjvm.so
#11 0x4043c64a in ContiguousSpace::oop_since_save_marks_iterate_nv ()
   from /usr/j2se/jre/lib/i586/client/libjvm.so
#12 0x4034b93d in DefNewGeneration::oop_since_save_marks_iterate_nv ()
   from /usr/j2se/jre/lib/i586/client/libjvm.so
#13 0x40358cc4 in GenCollectedHeap::oop_since_save_marks_iterate ()
   from /usr/j2se/jre/lib/i586/client/libjvm.so
#14 0x4034be59 in DefNewGeneration::FastEvacuateFollowersClosure::do_void ()
   from /usr/j2se/jre/lib/i586/client/libjvm.so
#15 0x40427ffd in ReferenceProcessor::process_discovered_reflist ()
   from /usr/j2se/jre/lib/i586/client/libjvm.so
#16 0x40427dd7 in ReferenceProcessor::process_discovered_references ()
   from /usr/j2se/jre/lib/i586/client/libjvm.so
#17 0x4034ade7 in DefNewGeneration::collect ()
   from /usr/j2se/jre/lib/i586/client/libjvm.so
#18 0x403570aa in GenCollectedHeap::do_collection ()
   from /usr/j2se/jre/lib/i586/client/libjvm.so
#19 0x40333eba in TwoGenerationCollectorPolicy::satisfy_failed_allocation ()
   from /usr/j2se/jre/lib/i586/client/libjvm.so
#20 0x40358f33 in GenCollectedHeap::satisfy_failed_allocation ()
   from /usr/j2se/jre/lib/i586/client/libjvm.so
#21 0x4047b572 in VM_GenCollectForAllocation::doit ()
   from /usr/j2se/jre/lib/i586/client/libjvm.so
#22 0x4047afbd in VM_Operation::evaluate ()
   from /usr/j2se/jre/lib/i586/client/libjvm.so
#23 0x4047a3d3 in VMThread::evaluate_operation ()
   from /usr/j2se/jre/lib/i586/client/libjvm.so
#24 0x4047a621 in VMThread::loop ()
   from /usr/j2se/jre/lib/i586/client/libjvm.so
#25 0x4047a2a1 in VMThread::run () from /usr/j2se/jre/lib/i586/client/libjvm.so
#26 0x4041812a in _start () from /usr/j2se/jre/lib/i586/client/libjvm.so
#27 0x4002fb9c in pthread_start_thread (arg=0x684afbe0) at manager.c:274

Notes
=============
*We still keep the hanging process on jtg-linux1 and go /bt to check the test output.
*How to reproduce bug:
telnet to the hosts shown in web for linux test machine with root/[host name] as id/passwd
goto /bt to execute script and /bs to get the running results
****for example:****
telnet to jtg-i114 with root/jtg-i114 as id/passwd
execute /bs/runatg.ksh -server
cd to /bt/atgxxx.xxx-server to get the results
###@###.### 2002-05-20