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IV72272: SEGMENTATION ERROR VALUE PROPAGATION

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APAR status

  • Closed as program error.

Error description

  • Error Message: Unhandled exceptionType=Segmentation error
    vmState=0x00051cff
    .
    Stack Trace: The stack trace in gdb will most likely contain the
    following
    methods:._ZN15TR_VPConstraint9intersectEPS_P19TR_ValuePropagatio
    n
    ()._ZN19TR_ValuePropagation19addConstraintToListEP7TR_NodeiiP15T
    R_VPConstraintP12TR_HedgeTreeINS_15ValueConstraintEEb
    ()._ZN19TR_ValuePropagation18addBlockConstraintEP7TR_NodeP15TR_V
    PConstraintS1_b
    ()._ZN19TR_ValuePropagation13getConstraintEP7TR_NodeRbS1_
    ()._Z12findConstantP19TR_ValuePropagationP7TR_Node ()
    .
    N/A
    

Local fix

  • -Xjit:disableGlobalValuePropagation,disableLocalValuePropagation
    will prevent the crash.  Any resulting performance degradation
    can be mitigated by limiting this option to the method being
    compiled at the time of the crash.
    

Problem summary

  • The Value Propagation optimization attempted to obtain type
    information for a certain expression in the program, and this
    required the optimization to obtain a lock.  If the optimization
    was unable to acquire the lock immediately (which could occur
    during garbage collection), it chose to continue without the
    desired type information, but subsequent processing was unable
    to proceed without the information, and crashed.
    

Problem conclusion

  • The optimization was changed to wait for the lock, thereby
    ensuring that it always obtains the desired type information.
    .
    This APAR will be fixed in the following Java Releases:
       7    SR9       (7.0.9.0)
       7 R1 SR3       (7.1.3.0)
       6 R1 SR8 FP4   (6.1.8.4)
    .
    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

    IV72272

  • Reported component name

    JIT

  • Reported component ID

    620700124

  • Reported release

    130

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2015-04-15

  • Closed date

    2015-04-15

  • Last modified date

    2015-04-21

  • 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

  • R260 PSY

       UP



Document information

More support for: Runtimes for Java Technology
Just In Time (JIT) Compiler

Software version: 130

Reference #: IV72272

Modified date: 21 April 2015