New Nightly failure:
runtime/threads/ThreadGroupStopTest

/net/vmsqe/export/nightly/mantis/DTWS/results/11-02-05/ClientVM/linux-i386/comp/C2_Baseline/vm.runtime-NIGHTLY-C2_Baseline-ClientVM-comp-linux-i386-2005-11-03-03-39-56

#
# An unexpected error has been detected by Java Runtime Environment:
#
# Internal Error (/PrtBuildDir/workspace/src/share/vm/code/codeCache.cpp, 222), pid=919, tid=3036375984
#
# Java VM: Java HotSpot(TM) Client VM (20051101150557.kvn.main_to_c2_baseline-debug compiled mode)
#
# Error: assert(cb == __null || cb->is_nmethod(),"did not find an nmethod")
# 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 (0x088e7100): JavaThread "t1" [_thread_in_vm, id=947]

Stack: [0xb4f66000,0xb4fb7000), sp=0xb4fb6314, free space=320k
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
V [libjvm.so+0x6eda38]
V [libjvm.so+0x35e725]
V [libjvm.so+0x3098b7]
V [libjvm.so+0x29f5af]
V [libjvm.so+0x29b232]
v ~RuntimeStub::forward_exception Runtime1 stub
v ~StubRoutines::call_stub
V [libjvm.so+0x3f092d]
V [libjvm.so+0x5e7ee8]
V [libjvm.so+0x3eff3f]
V [libjvm.so+0x3f00c7]
V [libjvm.so+0x4b1bd2]
V [libjvm.so+0x6a79ec]
V [libjvm.so+0x5e8fe2]
C [libpthread.so.0+0x4dec]

Java frames: (J=compiled Java code, j=interpreted, Vv=VM code)
v ~RuntimeStub::forward_exception Runtime1 stub
v ~StubRoutines::call_stub