IV26969: SPURIOUS PER ZAD EVENTS WHILE EXECUTING JIT-COMPILED CODE

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You can track all active APARs for this component.

APAR status

  • Closed as program error.

Error description

  • Error Message: When a PER (program event recording) ZAD (zero
    address detection) SLIP trap is set for a Java program running
    on z/OS 1.13 (or newer), the trap can be triggered unnecessarily
    by JIT-compiled methods which contain incorrectly encoded
    instructions that perform otherwise correct program logic. These
    spurious PER ZAD events make the use of the SLIP trap difficult
    or impossible.
    .
    Stack Trace: N/A
    .
    

Local fix

  • N/A
    

Problem summary

  • The problem is caused by the inappropriate use of registers by
    JIT-compiled code in the formation of memory addresses.
    

Problem conclusion

  • This defect will be fixed in:
    6.0.0 SR11
    5.0.0 SR14
    .
    The JIT compiler has been updated to suppress the spurious PER
    ZAD events.
    

Temporary fix

Comments

APAR Information

  • APAR number

    IV26969

  • Reported component name

    JAVA 5 JIT

  • Reported component ID

    620500124

  • Reported release

    500

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2012-08-24

  • Closed date

    2012-08-24

  • Last modified date

    2012-08-24

  • APAR is sysrouted FROM one or more of the following:

    IV26903

  • APAR is sysrouted TO one or more of the following:

Fix information

  • Fixed component name

    JAVA 5 JIT

  • Fixed component ID

    620500124

Applicable component levels

  • R500 PSN

       UP



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Document information


More support for:

Runtimes for Java Technology
Just In Time (JIT) Compiler

Software version:

5.0

Reference #:

IV26969

Modified date:

2012-08-24

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