[Bug 1403] New: JVM Crashes when XX:ConcGCThreads is greater than the number of cores

[bugzilla-daemon at icedtea.classpath.org]

http://icedtea.classpath.org/bugzilla/show_bug.cgi?id=1403

            Bug ID: 1403
           Summary: JVM Crashes when XX:ConcGCThreads is greater than the
                    number of cores
    Classification: Unclassified
           Product: IcedTea
           Version: 6-1.11.1
          Hardware: x86_64
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P3
         Component: IcedTea
          Assignee: gnu.andrew at redhat.com
          Reporter: lakagwu at redhat.com
                CC: unassigned at icedtea.classpath.org

Crash log snippet

# JRE version: 6.0_24-b24
# Java VM: OpenJDK 64-Bit Server VM (20.0-b12 mixed mode linux-amd64
compressed oops)
# Derivative: IcedTea6 1.11.1
# Distribution: Red Hat Enterprise Linux Server release 6.2 (Santiago),
package rhel-1.45.1.11.1.el6-x86_64
# Problematic frame:
# V  [libjvm.so+0x496a69]  AsyncGetCallTrace+0x81eb9
.. ..
[error occurred during error reporting (printing register info), id 0xb]

Stack: [0x00007fe6d6ff2000,0x00007fe6d70f3000],  sp=0x00007fe6d70f1670,  free
space=1021k
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native
code)
V  [libjvm.so+0x496a69]  AsyncGetCallTrace+0x81eb9
V  [libjvm.so+0x36c4dd]  ftell+0x36c4dd
V  [libjvm.so+0x451149]  AsyncGetCallTrace+0x3c599
V  [libjvm.so+0x444a2b]  AsyncGetCallTrace+0x2fe7b
V  [libjvm.so+0x44828b]  AsyncGetCallTrace+0x336db
V  [libjvm.so+0x448a6a]  AsyncGetCallTrace+0x33eba
V  [libjvm.so+0x3aa7bb]  ftell+0x3aa7bb
V  [libjvm.so+0x3aaa81]  ftell+0x3aaa81
V  [libjvm.so+0x3aac9c]  ftell+0x3aac9c
V  [libjvm.so+0x44769c]  AsyncGetCallTrace+0x32aec
.. ..
.. ..
VM Arguments:
jvm_args: -XX:+UseCompressedOops -XX:+TieredCompilation -Xms512m -Xmx512m
-XX:PermSize=256m -XX:MaxPermSize=256m -XX:+HeapDumpOnOutOfMemoryError
-XX:HeapDumpPath=/var/log/tests/ -XX:+CMSClassUnloadingEnabled
-XX:+CMSPermGenSweepingEnabled -XX:+UseConcMarkSweepGC -XX:ConcGCThreads=4
-XX:+CMSConcurrentMTEnabled -Dsun.rmi.dgc.client.gcInterval=3600000
-Dsun.rmi.dgc.server.gcInterval=3600000 -Djava.net.preferIPv4Stack=true
-Djava.awt.headless=true 
.. ..
.. ..
CPU:total 2 (1 cores per cpu, 1 threads per core) family 6 model 2 stepping
3, cmov, cx8, fxsr, mmx, sse, sse2, sse3, popcnt

Memory: 4k page, physical 7894140k(2664152k free), swap 0k(0k free)
-----------

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