Name: rmT116609 Date: 11/14/2002


FULL PRODUCT VERSION :
$java -version

java version "1.4.1_01"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.1_01-b01)
Java HotSpot(TM) Client VM (build 1.4.1_01-b01, mixed mode)

FULL OPERATING SYSTEM VERSION :
Slackware 8.0
$uname -a
Linux ranch 2.4.18 #3 Fri Apr 26 23:24:18 EDT 2002 i686 unknown
$ls /lib/libc-*
/lib/libc-2.2.3.so

EXTRA RELEVANT SYSTEM CONFIGURATION :
RAM = 385376K
Swap = 128484K

A DESCRIPTION OF THE PROBLEM :
VM crashes when run with the following command:

java -verbose:gc -Xmx1895m GCTest

VM error message:

Unexpected Signal : 11 occurred at PC=0x403E4EB5
Function=start_thread__2osP6Thread+0x2D
Library=/usr/local/j2sdk1.4.1_01/jre/lib/i386/client/libjvm.so

Current Java thread:

Dynamic libraries:
08048000-0804e000 r-xp 00000000 03:06 17800
/usr/local/j2sdk1.4.1_01/bin/java
0804e000-0804f000 rw-p 00005000 03:06 17800
/usr/local/j2sdk1.4.1_01/bin/java
40000000-40015000 r-xp 00000000 03:09 111638
/lib/ld-2.2.3.so
40015000-40016000 rw-p 00014000 03:09 111638
/lib/ld-2.2.3.so
4001f000-4002d000 r-xp 00000000 03:09 111658
/lib/libpthread-0.9.so
4002d000-40035000 rw-p 0000d000 03:09 111658
/lib/libpthread-0.9.so
40035000-40038000 r-xp 00000000 03:09 111646
/lib/libdl-2.2.3.so
40038000-40039000 rw-p 00002000 03:09 111646
/lib/libdl-2.2.3.so
40039000-40140000 r-xp 00000000 03:09 111641
/lib/libc-2.2.3.so
40140000-40146000 rw-p 00106000 03:09 111641
/lib/libc-2.2.3.so
4014a000-40462000 r-xp 00000000 03:06 17287
/usr/local/j2sdk1.4.1_01/jre/lib/i386/client/libjvm.so
40462000-40616000 rw-p 00317000 03:06 17287
/usr/local/j2sdk1.4.1_01/jre/lib/i386/client/libjvm.so
40626000-40637000 r-xp 00000000 03:09 111649
/lib/libnsl-2.2.3.so
40637000-40639000 rw-p 00010000 03:09 111649
/lib/libnsl-2.2.3.so
4063b000-4065c000 r-xp 00000000 03:09 111647
/lib/libm-2.2.3.so
4065c000-4065d000 rw-p 00020000 03:09 111647
/lib/libm-2.2.3.so
4065d000-40666000 r-xp 00000000 03:06 17281
/usr/local/j2sdk1.4.1_01/jre/lib/i386/native_threads/libhpi.so
40666000-40667000 rw-p 00008000 03:06 17281
/usr/local/j2sdk1.4.1_01/jre/lib/i386/native_threads/libhpi.so
40668000-40678000 r-xp 00000000 03:06 17291
/usr/local/j2sdk1.4.1_01/jre/lib/i386/libverify.so
40678000-4067a000 rw-p 0000f000 03:06 17291
/usr/local/j2sdk1.4.1_01/jre/lib/i386/libverify.so
4067a000-4069b000 r-xp 00000000 03:06 17292
/usr/local/j2sdk1.4.1_01/jre/lib/i386/libjava.so
4069b000-4069d000 rw-p 00020000 03:06 17292
/usr/local/j2sdk1.4.1_01/jre/lib/i386/libjava.so
4069d000-406b2000 r-xp 00000000 03:06 17294
/usr/local/j2sdk1.4.1_01/jre/lib/i386/libzip.so
406b2000-406b4000 rw-p 00014000 03:06 17294
/usr/local/j2sdk1.4.1_01/jre/lib/i386/libzip.so
406b4000-41d82000 r--s 00000000 03:06 225858
/usr/local/j2sdk1.4.1_01/jre/lib/rt.jar
41dc5000-41ddc000 r--s 00000000 03:06 225789
/usr/local/j2sdk1.4.1_01/jre/lib/sunrsasign.jar
41ddc000-41e4d000 r--s 00000000 03:06 225791
/usr/local/j2sdk1.4.1_01/jre/lib/jsse.jar
41e4d000-41e60000 r--s 00000000 03:06 225790
/usr/local/j2sdk1.4.1_01/jre/lib/jce.jar
41e60000-4211c000 r--s 00000000 03:06 225856
/usr/local/j2sdk1.4.1_01/jre/lib/charsets.jar
441c4000-441ce000 r-xp 00000000 03:09 111650
/lib/libnss_compat-2.2.3.so
441ce000-441d0000 rw-p 00009000 03:09 111650
/lib/libnss_compat-2.2.3.so

Local Time = Thu Nov 14 11:00:08 2002
Elapsed Time = 0
#
# HotSpot Virtual Machine Error : 11
# Error ID : 4F530E43505002E6
# Please report this error at
# http://java.sun.com/cgi-bin/bugreport.cgi
#
# Java VM: Java HotSpot(TM) Client VM (1.4.1_01-b01 mixed mode)
#
# An error report file has been saved as hs_err_pid1638.log.
# Please refer to the file for further information.
#
Aborted

GCTest.java:

class GCTest {
  public static void main(String[] args) {
    Obj test = new Obj(1000000000);
   }
  private static class Obj {
    private byte[] data;
    public Obj(int size) {
      data = new byte[size];
    }
  }
}

Reducing Xmx by 1M eliminates the crash:
$java -verbose:gc -Xmx1894m GCTest
[GC 280K->138K(1984K), 0.0117300 secs]
[Full GC 138K->138K(1984K), 0.0475560 secs]
[Full GC 138K->138K(1984K), 0.0450460 secs]
Exception in thread "main" java.lang.OutOfMemoryError

Crashes occur for Xmx of 1895 or 1896. With Xmx of 1897 or
more, the following message is displayed:
Fatal: Unable to create signal thread (may be due to
resource limit)
Aborted

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
1.javac GCTest.java
2.java -verbose:gc -Xmx1895m GCTest
3.

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED:
Fatal: Unable to create signal thread (may be due to
resource limit)
Aborted

ACTUAL:
crash

ERROR MESSAGES/STACK TRACES THAT OCCUR :
Unexpected Signal : 11 occurred at PC=0x403E4EB5
Function=start_thread__2osP6Thread+0x2D
Library=/usr/local/j2sdk1.4.1_01/jre/lib/i386/client/libjvm.so

Current Java thread:

Dynamic libraries:
08048000-0804e000 r-xp 00000000 03:06 17800 /usr/local/j2sdk1.4.1_01/bin/java
0804e000-0804f000 rw-p 00005000 03:06 17800 /usr/local/j2sdk1.4.1_01/bin/java
40000000-40015000 r-xp 00000000 03:09 111638 /lib/ld-2.2.3.so
40015000-40016000 rw-p 00014000 03:09 111638 /lib/ld-2.2.3.so
4001f000-4002d000 r-xp 00000000 03:09 111658 /lib/libpthread-0.9.so
4002d000-40035000 rw-p 0000d000 03:09 111658 /lib/libpthread-0.9.so
40035000-40038000 r-xp 00000000 03:09 111646 /lib/libdl-2.2.3.so
40038000-40039000 rw-p 00002000 03:09 111646 /lib/libdl-2.2.3.so
40039000-40140000 r-xp 00000000 03:09 111641 /lib/libc-2.2.3.so
40140000-40146000 rw-p 00106000 03:09 111641 /lib/libc-2.2.3.so
4014a000-40462000 r-xp 00000000 03:06 17287
/usr/local/j2sdk1.4.1_01/jre/lib/i386/client/libjvm.so
40462000-40616000 rw-p 00317000 03:06 17287
/usr/local/j2sdk1.4.1_01/jre/lib/i386/client/libjvm.so
40626000-40637000 r-xp 00000000 03:09 111649 /lib/libnsl-2.2.3.so
40637000-40639000 rw-p 00010000 03:09 111649 /lib/libnsl-2.2.3.so
4063b000-4065c000 r-xp 00000000 03:09 111647 /lib/libm-2.2.3.so
4065c000-4065d000 rw-p 00020000 03:09 111647 /lib/libm-2.2.3.so
4065d000-40666000 r-xp 00000000 03:06 17281
/usr/local/j2sdk1.4.1_01/jre/lib/i386/native_threads/libhpi.so
40666000-40667000 rw-p 00008000 03:06 17281
/usr/local/j2sdk1.4.1_01/jre/lib/i386/native_threads/libhpi.so
40668000-40678000 r-xp 00000000 03:06 17291
/usr/local/j2sdk1.4.1_01/jre/lib/i386/libverify.so
40678000-4067a000 rw-p 0000f000 03:06 17291
/usr/local/j2sdk1.4.1_01/jre/lib/i386/libverify.so
4067a000-4069b000 r-xp 00000000 03:06 17292
/usr/local/j2sdk1.4.1_01/jre/lib/i386/libjava.so
4069b000-4069d000 rw-p 00020000 03:06 17292
/usr/local/j2sdk1.4.1_01/jre/lib/i386/libjava.so
4069d000-406b2000 r-xp 00000000 03:06 17294
/usr/local/j2sdk1.4.1_01/jre/lib/i386/libzip.so
406b2000-406b4000 rw-p 00014000 03:06 17294
/usr/local/j2sdk1.4.1_01/jre/lib/i386/libzip.so
406b4000-41d82000 r--s 00000000 03:06 225858
/usr/local/j2sdk1.4.1_01/jre/lib/rt.jar
41dc5000-41ddc000 r--s 00000000 03:06 225789
/usr/local/j2sdk1.4.1_01/jre/lib/sunrsasign.jar
41ddc000-41e4d000 r--s 00000000 03:06 225791
/usr/local/j2sdk1.4.1_01/jre/lib/jsse.jar
41e4d000-41e60000 r--s 00000000 03:06 225790
/usr/local/j2sdk1.4.1_01/jre/lib/jce.jar
41e60000-4211c000 r--s 00000000 03:06 225856
/usr/local/j2sdk1.4.1_01/jre/lib/charsets.jar
441c4000-441ce000 r-xp 00000000 03:09 111650 /lib/libnss_compat-2.2.3.so
441ce000-441d0000 rw-p 00009000 03:09 111650 /lib/libnss_compat-2.2.3.so

Local Time = Thu Nov 14 11:11:25 2002
Elapsed Time = 0
#
# HotSpot Virtual Machine Error : 11
# Error ID : 4F530E43505002E6
# Please report this error at
# http://java.sun.com/cgi-bin/bugreport.cgi
#
# Java VM: Java HotSpot(TM) Client VM (1.4.1_01-b01 mixed mode)
#
# An error report file has been saved as hs_err_pid1814.log.
# Please refer to the file for further information.
#
Aborted

REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
class GCTest {
  public static void main(String[] args) {
    Obj test = new Obj(1000000000);
   }
  private static class Obj {
    private byte[] data;
    public Obj(int size) {
      data = new byte[size];
    }
  }
}
---------- END SOURCE ----------

CUSTOMER WORKAROUND :
change Xmx
(Review ID: 167052)
======================================================================