IJ19322: CRASH IN COMPILED CODE ON IBM Z

APAR status

• Closed as program error.

Error description

• Error Message: A segmentation error/0C4 abend is raised by JIT
  compiled code
  .
  Stack Trace: N/A
  .
  This problem can only occur on IBM Z (z/OS and Linux on Z)
  One method known to hit the problem is
  org/apache/xml/serialize/XMLSerializer.printText(<OSB>CIIZZ)V
  The problem seems to be more likely to appear starting around
  Java 8 SR5 FP35
  

Local fix

Problem summary

• An implicit assumption was made by the JIT compiler about sign
  extensions for type conversions. This resulted in extensions not
  being performed for the full 64 bits of a register in certain
  cases. This meant left over high order bits might not be cleared
  which is very likely to cause a crash.
  

Problem conclusion

• This problem has been addressed by
  https://github.com/eclipse/omr/pull/4103
  .
  This APAR will be fixed in the following Java Releases:
   8 SR5 FP41 (8.0.5.41)
  .
  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