IBM Support

IV79146: UNEXPECTED NPE THROWN ON X86 PLATFORMS

Subscribe to this APAR

By subscribing, you receive periodic emails alerting you to the status of the APAR, along with a link to the fix after it becomes available. You can track this item individually or track all items by product.

Notify me when this APAR changes.

Notify me when an APAR for this component changes.

 

APAR status

  • Closed as program error.

Error description

  • Error Message: unexpected java.lang.NullPointerException is
    thrown from Java program
    .
    Stack Trace: java.lang.NullPointerException
            at
    org.jruby.runtime.ThreadContext.pollThreadEvents(ThreadContext.j
    ava:662)
            at org.jruby.ast.CaseNode.interpret(CaseNode.java:123)
            at
    org.jruby.ast.NewlineNode.interpret(NewlineNode.java:105)
            at
    org.jruby.evaluator.ASTInterpreter.INTERPRET_BLOCK(ASTInterprete
    r.java:1 12)
    .
    This problem can only occur on x86 platforms.
    

Local fix

  • This issue might be worked around with the Java option
    -Xjit:disableLoopVersioner. However, this might not work for all
    the cases.
    

Problem summary

  • This problem happens because that x86 code generator decides not
    to generate the null test based on a flag on the variable which
    was wrongly set by a loop related optimization.
    

Problem conclusion

  • The loop related optimization has been fixed to avoid setting
    the flag in certain cases.
    .
    This APAR will be fixed in the following Java Releases:
       8    SR2 FP10  (8.0.2.10)
    .
    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 number

    IV79146

  • Reported component name

    JIT

  • Reported component ID

    620700124

  • Reported release

    130

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2015-11-21

  • Closed date

    2015-11-21

  • Last modified date

    2015-11-30

  • 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

    JIT

  • Fixed component ID

    620700124

Applicable component levels

  • R130 PSY

       UP

[{"Business Unit":{"code":"BU048","label":"IBM Software"},"Product":{"code":"SSC9HBA","label":"Just In Time (JIT) Compiler"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"130","Edition":"","Line of Business":{"code":"","label":""}}]

Document Information

Modified date:
30 November 2015