IV80394: CRASH DURING JIT COMPILATION IN JAVA 8 ON 64-BIT BIG ENDIAN POWE R LINUX

APAR status

• Closed as program error.

Error description

• Error Message: Segmentation fault in JIT compilation threads in
  function TR_BlockSplitter::synergisticDepthCalculator(...).
  Crash is only possible on 64-bit Big Endian POWER Linux and only
  when running Java 8. The problematic functionality is not
  enabled in versions of Java prior to Java 8 and users will not
  experience this issue when using those versions.
  .
  Stack Trace: N/A
  .
  

Local fix

• Define and set the following environment variable for the Java
  process: TR_DisableBlockSplitterSynergy=1. This workaround may
  have a very small performance penalty in some cases.
  

Problem summary

• The problem is caused by a defect in the C++ compiler used to
  build the JIT compiler.
  

Problem conclusion

• The JIT compiler source code has been modified to work around
  the C++ compiler defect.
  .
  This APAR will be fixed in the following Java Releases:
   8 SR2 FP10 (8.0.2.10)
   7 SR9 FP30 (7.0.9.30)
   6 R1 SR8 FP20 (6.1.8.20)
   7 R1 SR3 FP30 (7.1.3.30)
   6 SR16 FP20 (6.0.16.20)
  .
  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:

• Fixed component name

  JIT

• Fixed component ID

  620700124

Applicable component levels

• R130 PSY

     UP

• R260 PSY

     UP

• R600 PSY

     UP