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Pinned topic JVM Crashed ith "Assertion Failed" error and dump generated can't be analyz

‏2012-10-24T18:54:22Z |
Seeing following errors in the logs

18:47:52.786 0x33c72600 j9mm.107 * ** ASSERTION FAILED ** at MarkingScheme.cpp:325: ((objectPtr != ((j9object_t)((UDATA)-1))))
JVMDUMP006I Processing dump event "traceassert", detail "" - please wait.
JVMDUMP032I JVM requested System dump using 'SOMEPATH/core.20121015.114752.23855198.0001.dmp' in response to an event

jextract, dumpview and other IBM Support Assistant tools are also not able to process that dmp. The tools are giving errors that no JVM found in dump. If jdk tools itself not able to read system dumps, is it jvm bug?

Here is the java version

java version "1.6.0"
Java(TM) SE Runtime Environment (build pap3260sr5-20090529_04(SR5))
IBM J9 VM (build 2.4, J2RE 1.6.0 IBM J9 2.4 AIX ppc-32 jvmap3260sr5-20090519_35743 (JIT enabled, AOT enabled)
J9VM - 20090519_035743_bHdSMr
JIT - r9_20090518_2017
GC - 20090417_AA)
JCL - 20090529_01