IJ00268: CRASH IN LIBJ9JVMTI29.SO

APAR status

• Closed as program error.

Error description

• Error Message: A dump event "gpf" is received when a class is
  being replaced at JVM runtime.
  .
  Stack Trace: The native stack trace is similar to the following:
  #12 <signal handler called>
  #13 fixJNIMethodID
  #14 0x000003ffab2c3088 in fixJNIMethodIDs
  #15 0x000003ffab2c3610 in fixJNIRefs
  #16 0x000003ffab289ed8 in redefineClassesCommon
  #17 0x000003ffab28a718 in jvmtiRetransformClasses
  #18 0x000003ff98f04f9c in retransformClasses ()
  #19 0x000003ff9a8a3dc6 in ?? ()
  .
  

Local fix

Problem summary

• The problem is caused when a class is redefined at JVM runtime
  and one of its field for JNI identifications is NULL.
  

Problem conclusion

• The JVM has been changed so that a proper NULL checking is
  performed on the JNI identification field before it gets
  updated.
  .
  This APAR will be fixed in the following Java Releases:
     8    SR5 FP5   (8.0.5.5)
     7 R1 SR4 FP20  (7.1.4.20)
  .
  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

     UP