{
aRegistryFound = true;
      } catch (RemoteException e) {
System.err.println ("RemoteException: port = " + rport + ", detail = "
+ e);
      }
    if (aRegistryFound)
      throw new NotBoundException ("name not bound in any registry on "
+ host + ": " + name);
    else
      throw new NotBoundException ("no registries found on " + host +
", ports " + lowPort + ".." + highPort);
  }

  static interface Msg extends Remote {
    String value () throws RemoteException;
  }

  static class MsgRep extends UnicastRemoteObject implements Msg {
    MsgRep (String s) throws RemoteException { this.s = s; }
    public String value () { return s; }
    String s;
  }

  public static void main (String[] args)
    throws IOException, InterruptedException
  {
    String myName, neighborName;

    myName = args[0];
    neighborName = args[1];

    createMyRegistry (LOW_PORT, HIGH_PORT);

    registry.rebind (myName, new MsgRep ("Hello " + neighborName + "!"));
    
    /* Repeatedly try to find neighboring object. */
    for (int i = 0; i < 5; i += 1) {
      try {
Msg neighbor = (Msg) findObject (neighborName, "localhost",
LOW_PORT, HIGH_PORT);
System.err.println (myName + " found neighbor " + neighborName
+ "'s message: " + neighbor.value ());
break;
      } catch (NotBoundException e) {
System.err.println ("Error looking for " + neighborName
+ ": " + e.getMessage ());
System.err.flush ();

Thread.sleep (3000);
      }
    }

    System.exit (0);

  }

}




---------- END SOURCE ----------
(Incident Review ID: 269976)
======================================================================


Name: rmT116609 Date: 05/21/2004


FULL PRODUCT VERSION :
java version "1.5.0-beta"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0-beta-b32c)
Java HotSpot(TM) Client VM (build 1.5.0-beta-b32c, mixed mode)

FULL OS VERSION :
SunOS tully.CS.Berkeley.EDU 5.8 Generic_117000-01 sun4u sparc SUNW,Ultra-5_10

A DESCRIPTION OF THE PROBLEM :
The attached program simply tries to create a local repository, bind a message object in it, and then find another repository on localhost and retrieve a message from it.

It finds the other repository by sweeping through a list of possible ports using
LocateRegistry.getRegistry, and then trying to fetch the object using a name that is provided as input. If it fails to find the object on one sweep, it is supposed to wait and try again. However, it appears that the second sweep causes the VM to crash.

It is sometimes necessary to run the program several times to tickle the error. I suspect that the accumulation of sockets in TIME_WAIT state that the program leaves behind have something to do with this, but I have not investigated.

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
1. Compile the program with
           javac -g bug.java
           rmic bug.MsgRep

2. Run the program with
            java bug Peter Paul

3. You may have to repeat step #2 several times. Eventually, I find that I get a VM Error
     message at the end.


EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
  There should be a message of the form
   
     Created registry on port 1099

followed by five blocks of error messages generated by the program of the form that
each consist of several messages of the form

    RemoteException: port = 1100, detail = java.rmi.ConnectException: Connection refused to host: localhost; nested exception is:
java.net.ConnectException: Connection refused

followed by the message
   
    Error looking for Paul: name not bound in any registry on localhost: Paul

After five repeats of the above, the program exits.
ACTUAL -
Same as the above, but after the first block of error messages, we get a VM error
message (see next section).


ERROR MESSAGES/STACK TRACES THAT OCCUR :

#
# An unexpected error has been detected by HotSpot Virtual Machine:
#
# SIGSEGV (0xb) at pc=0xfe0f8c78, pid=6290, tid=38
#
# Java VM: Java HotSpot(TM) Client VM (1.5.0-beta-b32c mixed mode)
# Problematic frame:
# V [libjvm.so+0xf8c78]
#
# An error report file with more information is saved as hs_err_pid6290.log
#
# If you would like to submit a bug report, please visit:
# http://java.sun.com/webapps/bugreport/crash.jsp
#

Here is the file hs_err_pid6290.log:

#
# An unexpected error has been detected by HotSpot Virtual Machine:
#
# SIGSEGV (0xb) at pc=0xfe0f8c78, pid=6290, tid=38
#
# Java VM: Java HotSpot(TM) Client VM (1.5.0-beta-b32c mixed mode)
# Problematic frame:
# V [libjvm.so+0xf8c78]
#

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

Current thread (0x0024a168): JavaThread "RMI TCP Connection(1)-127.0.0.1" daemon [_thread_in_vm, id=38]

siginfo:si_signo=11, si_errno=0, si_code=1, si_addr=0x005a7854

Registers:
 O0=0x005a7844 O1=0x0024a348 O2=0x00000010 O3=0xfe52e000
 O4=0x004353a8 O5=0x00007950 O6=0xf7f7ff88 O7=0xfe0fd098
 G1=0x00000010 G2=0xfe55e3b8 G3=0xfe0fd098 G4=0x00007800
 G5=0xf300abb8 G6=0xfe0d8c30 G7=0xf7f81d98 Y=0x00000000
 PC=0xfe0f8c78 nPC=0xfe0f8c7c


  Top of Stack: (sp=0xf7f7ff88)
0xf7f7ff88: fe54beac 0024a71c 0024a348 00178390
0xf7f7ff98: 0024a328 000f8700 00000478 f9155f60
0xf7f7ffa8: f3c92528 0024a168 0000011e 00000010
0xf7f7ffb8: 0024a348 4849e45e f7f7fff0 fe1c9e0c
0xf7f7ffc8: f7f8012c f8814600 f3001ed8 f7f80020
0xf7f7ffd8: f7f80020 f8805664 ee871c87 0000007d
0xf7f7ffe8: 00000416 000002f6 0024a774 0024a328
0xf7f7fff8: 0003abd8 0024a330 fe55d1b0 00000014

Instructions: (pc=0xfe0f8c78)
0xfe0f8c68: 96 03 00 0f 9e 10 00 03 c4 02 c0 0d c2 00 a0 00
0xfe0f8c78: d8 02 00 01 80 a3 00 0a 02 80 00 04 80 a2 a0 00

Stack: [0xf7f02000,0xf7f81d98), sp=0xf7f7ff88, free space=503k
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
V [libjvm.so+0xf8c78]
V [libjvm.so+0x1c9e14]
V [libjvm.so+0x1c9c18]
V [libjvm.so+0x1c989c]
C [libjava.so+0xf840] Java_java_lang_Throwable_getStackTraceElement+0x14
j java.lang.Throwable.getStackTraceElement(I)Ljava/lang/StackTraceElement;+9148
j java.lang.Throwable.getStackTraceElement(I)Ljava/lang/StackTraceElement;+0
j java.lang.Throwable.getOurStackTrace()[Ljava/lang/StackTraceElement;+34
j java.lang.Throwable.writeObject(Ljava/io/ObjectOutputStream;)V+1
v ~StubRoutines::call_stub
V [libjvm.so+0xd8c38]
V [libjvm.so+0xff408]
V [libjvm.so+0x1d0d9c]
V [libjvm.so+0x1d0908]
C [libjava.so+0x102d0] Java_sun_reflect_NativeMethodAccessorImpl_invoke0+0x18
j sun.reflect.NativeMethodAccessorImpl.invoke0(Ljava/lang/reflect/Method;Ljava/lang/Object;[Ljava/lang/Object;)Ljava/lang/Object;+227396420
j sun.reflect.NativeMethodAccessorImpl.invoke0(Ljava/lang/reflect/Method;Ljava/lang/Object;[Ljava/lang/Object;)Ljava/lang/Object;+0
j sun.reflect.NativeMethodAccessorImpl.invoke(Ljava/lang/Object;[Ljava/lang/Object;)Ljava/lang/Object;+87
j sun.reflect.DelegatingMethodAccessorImpl.invoke(Ljava/lang/Object;[Ljava/lang/Object;)Ljava/lang/Object;+6
j java.lang.reflect.Method.invoke(Ljava/lang/Object;[Ljava/lang/Object;)Ljava/lang/Object;+111
j java.io.ObjectStreamClass.invokeWriteObject(Ljava/lang/Object;Ljava/io/ObjectOutputStream;)V+20
j java.io.ObjectOutputStream.writeSerialData(Ljava/lang/Object;Ljava/io/ObjectStreamClass;)V+79
j java.io.ObjectOutputStream.writeOrdinaryObject(Ljava/lang/Object;Ljava/io/ObjectStreamClass;Z)V+64
j java.io.ObjectOutputStream.writeObject0(Ljava/lang/Object;Z)V+506
j java.io.ObjectOutputStream.writeObject(Ljava/lang/Object;)V+16
j sun.rmi.server.UnicastServerRef.oldDispatch(Ljava/rmi/Remote;Ljava/rmi/server/RemoteCall;I)V+168
j sun.rmi.server.UnicastServerRef.dispatch(Ljava/rmi/Remote;Ljava/rmi/server/RemoteCall;)V+31
j sun.rmi.transport.Transport+1.run()Ljava/lang/Object;+23
v ~StubRoutines::call_stub
V [libjvm.so+0xd8c38]
V [libjvm.so+0xeb938]
C [libjava.so+0xedc4] Java_java_security_AccessController_doPrivileged__Ljava_security_PrivilegedExceptionAction_2Ljava_security_AccessControlContext_2+0x1c
j java.security.AccessController.doPrivileged(Ljava/security/PrivilegedExceptionAction;Ljava/security/AccessControlContext;)Ljava/lang/Object;+277702
j java.security.AccessController.doPrivileged(Ljava/security/PrivilegedExceptionAction;Ljava/security/AccessControlContext;)Ljava/lang/Object;+0
j sun.rmi.transport.Transport.serviceCall(Ljava/rmi/server/RemoteCall;)Z+163
j sun.rmi.transport.tcp.TCPTransport.handleMessages(Lsun/rmi/transport/Connection;Z)V+185
j sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run()V+685
j java.lang.Thread.run()V+11
v ~StubRoutines::call_stub
V [libjvm.so+0xd8c38]
V [libjvm.so+0x10452c]
V [libjvm.so+0x104388]
V [libjvm.so+0x10420c]
V [libjvm.so+0xd29a8]

Java frames: (J=compiled Java code, j=interpreted, Vv=VM code)
j java.lang.Throwable.getStackTraceElement(I)Ljava/lang/StackTraceElement;+0
j java.lang.Throwable.getOurStackTrace()[Ljava/lang/StackTraceElement;+34
j java.lang.Throwable.writeObject(Ljava/io/ObjectOutputStream;)V+1
v ~StubRoutines::call_stub
j sun.reflect.NativeMethodAccessorImpl.invoke0(Ljava/lang/reflect/Method;Ljava/lang/Object;[Ljava/lang/Object;)Ljava/lang/Object;+0
j sun.reflect.NativeMethodAccessorImpl.invoke(Ljava/lang/Object;[Ljava/lang/Object;)Ljava/lang/Object;+87
j sun.reflect.DelegatingMethodAccessorImpl.invoke(Ljava/lang/Object;[Ljava/lang/Object;)Ljava/lang/Object;+6
j java.lang.reflect.Method.invoke(Ljava/lang/Object;[Ljava/lang/Object;)Ljava/lang/Object;+111
j java.io.ObjectStreamClass.invokeWriteObject(Ljava/lang/Object;Ljava/io/ObjectOutputStream;)V+20
j java.io.ObjectOutputStream.writeSerialData(Ljava/lang/Object;Ljava/io/ObjectStreamClass;)V+79
j java.io.ObjectOutputStream.writeOrdinaryObject(Ljava/lang/Object;Ljava/io/ObjectStreamClass;Z)V+64
j java.io.ObjectOutputStream.writeObject0(Ljava/lang/Object;Z)V+506
j java.io.ObjectOutputStream.writeObject(Ljava/lang/Object;)V+16
j sun.rmi.server.UnicastServerRef.oldDispatch(Ljava/rmi/Remote;Ljava/rmi/server/RemoteCall;I)V+168
j sun.rmi.server.UnicastServerRef.dispatch(Ljava/rmi/Remote;Ljava/rmi/server/RemoteCall;)V+31
j sun.rmi.transport.Transport+1.run()Ljava/lang/Object;+23
v ~StubRoutines::call_stub
j java.security.AccessController.doPrivileged(Ljava/security/PrivilegedExceptionAction;Ljava/security/AccessControlContext;)Ljava/lang/Object;+0
j sun.rmi.transport.Transport.serviceCall(Ljava/rmi/server/RemoteCall;)Z+163
j sun.rmi.transport.tcp.TCPTransport.handleMessages(Lsun/rmi/transport/Connection;Z)V+185
j sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run()V+685
j java.lang.Thread.run()V+11
v ~StubRoutines::call_stub

--------------- P R O C E S S ---------------

Java Threads: ( => current thread )
  0x0024da30 JavaThread "SeedGenerator Thread" daemon [_thread_new, id=52]
  0x0017db18 JavaThread "SeedGenerator Thread" daemon [_thread_new, id=51]
  0x0017d158 JavaThread "SeedGenerator Thread" daemon [_thread_blocked, id=50]
  0x00231640 JavaThread "SeedGenerator Thread" daemon [_thread_blocked, id=49]
  0x00231890 JavaThread "SeedGenerator Thread" daemon [_thread_blocked, id=48]
  0x0024c0e8 JavaThread "RMI ConnectionExpiration-[localhost:1099]" daemon [_thread_blocked, id=39]
=>0x0024a168 JavaThread "RMI TCP Connection(1)-127.0.0.1" daemon [_thread_in_vm, id=38]
  0x0023f498 JavaThread "GC Daemon" daemon [_thread_blocked, id=37]
  0x0023f1d8 JavaThread "RMI Reaper" [_thread_blocked, id=36]
  0x0023b458 JavaThread "RMI TCP Accept-0" daemon [_thread_in_native, id=35]
  0x00237770 JavaThread "RMI TCP Accept-1099" daemon [_thread_in_native, id=34]
  0x00232520 JavaThread "Timer-0" daemon [_thread_blocked, id=33]
  0x00177b30 JavaThread "SeedGenerator Thread" daemon [_thread_in_Java, id=11]
  0x0012d7b8 JavaThread "Low Memory Detector" daemon [_thread_blocked, id=9]
  0x00129c98 JavaThread "CompilerThread0" daemon [_thread_blocked, id=8]
  0x00128ed8 JavaThread "Signal Dispatcher" daemon [_thread_blocked, id=7]
  0x00126b18 JavaThread "Finalizer" daemon [_thread_blocked, id=6]
  0x00125f08 JavaThread "Reference Handler" daemon [_thread_blocked, id=5]
  0x00036f20 JavaThread "main" [_thread_in_native, id=1]

Other Threads:
  0x001238b8 VMThread [id=4]
  0x0012e3f8 WatcherThread [id=10]

VM state:not at safepoint (normal execution)

VM Mutex/Monitor currently owned by a thread: None

Heap
 def new generation total 2112K, used 122K [0xea800000, 0xeaa20000, 0xeaf10000)
  eden space 2048K, 6% used [0xea800000, 0xea81ebb8, 0xeaa00000)
  from space 64K, 0% used [0xeaa00000, 0xeaa00000, 0xeaa10000)
  to space 64K, 0% used [0xeaa10000, 0xeaa10000, 0xeaa20000)
 tenured generation total 1408K, used 232K [0xeaf10000, 0xeb070000, 0xee800000)
   the space 1408K, 16% used [0xeaf10000, 0xeaf4a3f0, 0xeaf4a400, 0xeb070000)
 compacting perm gen total 8192K, used 590K [0xee800000, 0xef000000, 0xf2800000)
   the space 8192K, 7% used [0xee800000, 0xee893830, 0xee893a00, 0xef000000)
    ro space 8192K, 64% used [0xf2800000, 0xf2d30f10, 0xf2d31000, 0xf3000000)
    rw space 12288K, 45% used [0xf3000000, 0xf3569278, 0xf3569400, 0xf3c00000)

Dynamic libraries:
0x00010000 java
0xff350000 /usr/lib/libthread.so.1
0xff3a0000 /usr/lib/libdl.so.1
0xff200000 /usr/lib/libc.so.1
0xff330000 /usr/platform/SUNW,Ultra-5_10/lib/libc_psr.so.1
0xfe000000 /export/home/users/hilfingr/j2sdk1.5.0/jre/lib/sparc/client/libjvm.so
0xff2e0000 /usr/lib/libsocket.so.1
0xff1e0000 /usr/lib/libsched.so.1
0xff1b0000 /usr/lib/libCrun.so.1
0xff160000 /usr/lib/libm.so.1
0xff080000 /usr/lib/libnsl.so.1
0xff310000 /usr/lib/libw.so.1
0xff060000 /usr/lib/libmp.so.2
0xff040000 /export/home/users/hilfingr/j2sdk1.5.0/jre/lib/sparc/native_threads/libhpi.so
0xfe7e0000 /usr/lib/nss_compat.so.1
0xfe7c0000 /usr/lib/nss_nis.so.1
0xfe790000 /export/home/users/hilfingr/j2sdk1.5.0/jre/lib/sparc/libverify.so
0xfe750000 /export/home/users/hilfingr/j2sdk1.5.0/jre/lib/sparc/libjava.so
0xfe730000 /export/home/users/hilfingr/j2sdk1.5.0/jre/lib/sparc/libzip.so
0xfdee0000 /usr/lib/locale/en_US.ISO8859-1/en_US.ISO8859-1.so.2
0xfdda0000 /export/home/users/hilfingr/j2sdk1.5.0/jre/lib/sparc/libnet.so
0xfde90000 /usr/lib/nss_dns.so.1
0xfdcb0000 /usr/lib/libresolv.so.2
0xfdc50000 /export/home/users/hilfingr/j2sdk1.5.0/jre/lib/sparc/librmi.so

VM Arguments:
java_command: bug Peter Paul

Environment Variables:
CLASSPATH=.:/home/cs/hilfingr/lib/classes/ucb.jar:/home/cs/hilfingr/lib/classes/junit.jar
PATH=/home/cs/hilfingr/home2/j2sdk1.5.0/bin::/home/cs/hilfingr/arch/SunOS5.8-sun4u/bin:/home/cs/hilfingr/bin:/home/cs/hilfingr/sww/bin:/project/eecs/titanium/srs/sparc-sun-solaris2.8/bin:/usr/sww/X11/bin:/usr/sww/bin:/usr/ccs/bin:/usr/bin:/usr/ucb:/bin:.:/export/home/users/hilfingr/bin
LD_LIBRARY_PATH=/export/home/users/hilfingr/j2sdk1.5.0/jre/lib/sparc/client:/export/home/users/hilfingr/j2sdk1.5.0/jre/lib/sparc:/export/home/users/hilfingr/j2sdk1.5.0/jre/../lib/sparc:/home/cs/hilfingr/sww/lib:/usr/sww/lib
SHELL=/bin/csh
DISPLAY=:0.0
ARCH=sun4u


--------------- S Y S T E M ---------------

OS: Solaris 8 2/02 s28s_u7wos_08a SPARC
           Copyright 2002 Sun Microsystems, Inc. All Rights Reserved.
                           Assembled 18 December 2001

uname:SunOS 5.8 Generic_117000-01 sun4u (T1 libthread)
rlimit: STACK 8192k, CORE 0k, NOFILE 1024, AS infinity
load average:1.28 0.50 0.32

CPU:total 1(active 1) has_v8, has_v9, has_vis1

Memory: 8k page, physical 262144k(43768k free)

vm_info: Java HotSpot(TM) Client VM (1.5.0-beta-b32c) for solaris-sparc, built on Jan 23 2004 03:37:03 by unknown with unknown Workshop:0x550



REPRODUCIBILITY :
This bug can be reproduced often.

---------- BEGIN SOURCE ----------
// File bug.java:

import java.io.*;
import java.rmi.*;
import java.rmi.registry.*;
import java.rmi.server.*;

public class bug {

  static private Registry registry;
  static private int port;

  static void createMyRegistry (int lowPort, int highPort)
    throws RemoteException
  {
    registry = null;
    for (port = lowPort; port <= highPort; port += 1)
      try {
registry = LocateRegistry.createRegistry (port);
System.err.println ("Created registry on port " + port);
System.err.flush ();
return;
      } catch (RemoteException e) { }
    throw new RemoteException ("no port available");
  }

  static final int
    LOW_PORT = Registry.REGISTRY_PORT,
    HIGH_PORT = LOW_PORT + 9;

  static Remote findObject (String name, String host,
int lowPort, int highPort)
    throws NotBoundException {
    boolean aRegistryFound;
    aRegistryFound = false;
    for (int rport = lowPort; rport <= highPort; rport += 1)
      try {
return LocateRegistry.getRegistry (host, rport).lookup (name);
      } catch (NotBoundException e)