IV18975: MEMORY OVERWRITE WHEN USING IBM_XE_COE_NAME

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You can track all active APARs for this component.

APAR status

  • Closed as program error.

Error description

  • Error Message: ** ASSERTION FAILED ** j9prt.748 at
    ./common/j9memtag.c:145
    Trc_Assert_PRT_memory_corruption_detected((memoryCorruptionDetec
    ted))
    Note, this error message is only issued in Java 626 and Java 7
    releases (2.6 VM and later)
    .
    Stack Trace: N/A
    .
    Memory overwrite occurs when the IBM_XE_COE_NAME environment
    variable is used to set up dumps on named Java exceptions. The
    overwrite is a single null byte after the end of a dump
    configuration string, for example:
    "events=throw,range=1..4,filter=<exceptionname>
    

Local fix

  • Use -Xdump options instead of IBM_XE_COE_NAME
    

Problem summary

  • Problem is caused when initialising a JVM dump configuration
    option supplied via the IBM_XE_COE_NAME environment variable
    

Problem conclusion

  • This defect will be fixed in:
    5.0.0 SR14
    6.0.0 SR11
    6.0.1 SR3
    7.0.0 SR2
    .
    The JVM code has been fixed to prevent the memory overwrite
    

Temporary fix

Comments

APAR Information

  • APAR number

    IV18975

  • Reported component name

    JAVA 5 J9 COMMO

  • Reported component ID

    620500127

  • Reported release

    500

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2012-04-02

  • Closed date

    2012-04-03

  • Last modified date

    2012-04-03

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

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

    IV18976

Fix information

  • Fixed component name

    JAVA 5 J9 COMMO

  • Fixed component ID

    620500127

Applicable component levels

  • R500 PSY

       UP



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Document information


More support for:

Runtimes for Java Technology
Virtual Machine

Software version:

5.0

Reference #:

IV18975

Modified date:

2012-04-03

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