IV80517: JCK:JAVA80SR2: INT: JIT CRASH WITH VMSTATE=0X0005FF08 WHEN COMPI LING SUN/REFLECT/GENERATEDMETHODACCESSOR7.INVOKE()

APAR status

• Closed as program error.

Error description

• Error Message: Unhandled exception
  Type=Segmentation error
  vmState=0x0005ff08
  .
  Stack Trace: TR_S390Machine::assignBestRegisterPair()
  TR_S390Machine::assignBestRegister()
  TR_S390RegisterDependencyGroup::assignRegisters()
  TR_S390Instruction::assignRegistersAndDependencies()
  TR_S390Instruction::assignRegisters()
  TR_S390CodeGenerator::doRegisterAssignment()
  RegisterAssigningPhase_Impl::perform()
  TR_CodeGenerator::generateCode()
  TR_Compilation::compile()
  .
  

Local fix

• -Xjit:{sun/reflect/GeneratedMethodAccessor7.invoke()}(disableLoo
  pVersioner)
  

Problem summary

• Loops with long induction variables can, in some circumstances,
  be mishandled by the optimizer leading to incorrect program
  transformations being applied resulting in a JIT crash.
  

Problem conclusion

• The optimizer was enhanced to properly handle loops with long
  induction variables so only valid program transformation are
  applied.
  .
  This APAR will be fixed in the following Java Releases:
   8 SR2 (8.0.2.0)
  .
  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:

• Fixed component name

  JIT

• Fixed component ID

  620700124

Applicable component levels

• R130 PSY

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