IV86966: A GPF EVENT IS RECEIVED OR ERROR MESSAGES ARE FOUND IN STDERR WH EN A .CLASS FILE IS MODIFIED AT JVM RUNTIME AND THEN VERIFIED.

APAR status

• Closed as program error.

Error description

• Error Message: In one of the scenarios, a GPF event is received.
  In a different scenario, the following error message is found in
  the stderr:
  ** ASSERTION FAILED ** j9vrb.6 at errormessagehelper.c:365
  Assert_VRB_false(!(argumentSlotCount < 0))
  .
  Stack Trace: In one of the scenarios, a GPF event is received
  with the following stack trace:
  {libj9bcv28.so}{buildStackFromMethodSignature}
  {libj9bcv28.so}{j9bcv_verifyBytecodes}
  {libj9vm28.so}{performVerification__FP10J9VMThreadP7J9Class}
  {libj9vm28.so}{classInitStateMachine__FP10J9VMThreadP7J9Class16J
  9ClassInitState}
  {libj9vm28.so}{Fast_java_lang_Class_forNameImpl}
  {java/lang/Class.forName} JIT
  .
  

Local fix

Problem summary

• The problem is caused when an internal JVM data structure is not
  built correctly.
  

Problem conclusion

• The JVM has been updated so that the internal JVM data structure
  is built correctly.
  .
  This APAR will be fixed in the following Java Releases:
     8    SR3 FP20  (8.0.3.20)
  .
  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