IJ35579: GPF EVENT FROM METHOD ITERATESTACKTRACE

APAR status

• Closed as program error.

Error description

• Error Message: A GPF event is received when Java is trying to
  walk the Java stack
  .
  Stack Trace: <OSB>libj9prt29.so<CSB>
  <mainSynchSignalHandler+554>
  <OSB>../../omr/port/unix/omrsignal.c:1070<CSB>
  <OSB>libpthread.so.0<CSB>
  <OSB>libj9vm29.so<CSB> <iterateStackTrace+1980>
  <OSB>exceptiondescribe.c:380<CSB>
  <OSB>libjclse29.so<CSB> <getStackTrace+165>
  <OSB>common/jclexception.c:368<CSB>
  Java_java_lang_J9VMInternals_getStackTrace+0x30
  <OSB>libjclse29.so<CSB>
  <OSB>libj9vm29.so<CSB> <ffi_call_unix64+76>
  <OSB>x86/unix64.S:79<CSB>
  .
  

Local fix

Problem summary

• The problem is caused when a wrong romMethodCount is used.
  

Problem conclusion

• The JVM has been updated to ensure the correct romMethodCount is
  used when iterating ramMethods for different versions of the
  same class.
  PR: https://github.com/eclipse-openj9/openj9/pull/13690
  .
  This APAR will be fixed in the following Java Releases:
   8 SR7 FP5 (8.0.7.5)
  .
  Contact your IBM Product's Service Team for these Service
  Refreshes and Fix Packs.
  For those running stand-alone, information about the available
  Service Refreshes and Fix Packs can be found at:
   https://www.ibm.com/developerworks/java/jdk/
  

Temporary fix

Comments

APAR Information

• APAR is sysrouted FROM one or more of the following:

• APAR is sysrouted TO one or more of the following:

Fix information

• Fixed component name

  J9 COMMON CODE

• Fixed component ID

  620700127

Applicable component levels

• R270 PSY

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