IV72382: CRASH DURING JIT COMPILATION IN TR_S390MACHINE::FREEBESTREGISTER

APAR status

• Closed as program error.

Error description

• Error Message: An S0C4 abend or segmentation error with
  vmState=0x0005ff08 occurs during JIT compilation.
  .
  Stack Trace:
  TR_S390Machine::freeBestRegisterTR_S390Machine::coerceRegisterAs
  signmentTR_S390RegisterDependencyGroup::assignRegistersTR_S390La
  belInstruction::assignRegistersAndDependenciesTR_S390Instruction
  ::assignRegistersTR_S390CodeGenerator::doRegisterAssignmentRegis
  terAssigningPhase_Impl::performTR_CodeGenerator::generateCodeTR_
  Compilation::compile
  .
  

Local fix

Problem summary

• A NULL check for a JIT internal object was missing hence a
  de-reference caused a segmentation error.
  

Problem conclusion

• The NULL check was added to prevent de-referencing the JIT
  internal object if it wasn't instantiated.
  .
  This APAR will be fixed in the following Java Releases:
   8 SR1 (8.0.1.0)
   6 SR16 FP4 (6.0.16.4)
   5.0 SR16 FP10 (5.0.16.10)
   6 R1 SR8 FP4 (6.1.8.4)
   7 SR9 (7.0.9.0)
  .
  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:

  IV72383 IV72384 IV72392

• Fixed component name

  JIT

• Fixed component ID

  620700124

Applicable component levels

• R130 PSY

     UP

• R600 PSY

     UP

• R260 PSY

     UP