IV19694: CRASH - ILLEGAL INSTRUCTION IN COMPILED METHOD

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APAR status

  • Closed as program error.

Error description

  • Error Message: Unhandled exception
    Type=Illegal instruction vmState=0x00000000
    J9Generic_Signal_Number=00000010 Signal_Number=00000004
    Error_Value=00000000 Signal_Code=0000000b
    .
    Stack Trace: N/A
    .
    

Local fix

  • -Xjit:disableMccFreeBlockRecycling
    

Problem summary

  • Due to faulty management of reclaimed code cache blocks the
    control flow can lead to execution of bad code
    

Problem conclusion

  • This defect will be fixed in:
    6.0.1 SR2
    7.0.0 SR1
    .
    The management of reclaimed code cache blocks has been fixed to
    avoid the corner case leading to the crash
    

Temporary fix

Comments

APAR Information

  • APAR number

    IV19694

  • Reported component name

    JIT

  • Reported component ID

    620700124

  • Reported release

    260

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2012-04-13

  • Closed date

    2012-04-13

  • Last modified date

    2012-04-13

  • 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

  • R260 PSY

       UP



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Document information


More support for:

Runtimes for Java Technology
Just In Time (JIT) Compiler

Software version:

260

Reference #:

IV19694

Modified date:

2012-04-13

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