IBM Support

IJ02020: CRASH IN COMPILED CODE WHILE PROCESSING REMAINDER OF TWO DOUBLES ON Z/OS

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APAR status

  • Closed as program error.

Error description

  • Error Message: Type=Segmentation error vmState=0x00000000
    J9Generic_Signal_Number=00000004 Signal_Number=0000000b
    Error_Value=00000000 Signal_Code=00000035
    Handler1=0000005008722990 Handler2=0000005008647000
    gpr0=FFFFFFFFFFFFFFB0 gpr1=000000013FC69548
    gpr2=000000013FC69520 gpr3=000000009FE34A54
    gpr4=0000000000000002 gpr5=0000000025DBEEC0
    gpr6=0000005019103470 gpr7=000000013FC692A0
    gpr8=0000000025DBEEC0 gpr9=0000000024A53500
    gpr10=0000000024A42100 gpr11=000000013FC69558
    gpr12=000000013FC32150 gpr13=0000000024A0E600
    gpr14=000000501DD701E8 gpr15=000000501DD70DF8
    fpc=00F8FE0000000000 psw0=4785240180000000 psw1=000000002298205E
    sp=00000050109FDD80
    bea=000000501DD701E6
    .
    Stack Trace: ----------- Stack Backtrace -----------
    protectedIntrospectBacktraceSymbols+0xdd7cd0f8 (,
    0x0000000000000000)
    omrsig_protect+0xdd7cfd68 (, 0x0000000000000000)
    omrintrospect_backtrace_symbols+0xdd7cd1e8 (,
    0x0000000000000000)
    generateDiagnosticFiles+0xddaed5c0 (, 0x0000000000000000)
    omrsig_protect+0xdd7cfd68 (, 0x0000000000000000)
    structuredSignalHandler+0xddaec328 (, 0x0000000000000000)
    masterSynchSignalHandler+0xdd7d1f38 (, 0x0000000000000000)
    __zerro+0xddecc148 (, 0x0000000000000000)
    __zerros+0xddecc478 (, 0x0000000000000000)
    CEEHDSP+0xde3c2d00 (, 0x0000000000000000)
    CEEOSIGJ+0xde126820 (, 0x0000000000000000)
    CELQHROD+0xde3af3b8 (, 0x0000000000000000)
    CEEOSIGG+0xde12d840 (, 0x0000000000000000)
    CELQHROD+0xde3af3b8 (, 0x0000000000000000)
    ZJ9SYM1+0xddb20cf8 (, 0x0000000000000000)
    runCallInMethod+0xddb0fbb0 (, 0x0000000000000000)
    gpProtectedRunCallInMethod(void*)+0xddae3f80 (,
    0x0000000000000000)
    signalProtectAndRunGlue+0xdd9b92a8 (, 0x0000000000000000)
    omrsig_protect+0xdd7cfd68 (, 0x0000000000000000)
    gpProtectAndRun+0xdd9b95b8 (, 0x0000000000000000)
    gpCheckCallin+0xddae4020 (, 0x0000000000000000)
    callStaticVoidMethod+0xddae5c58 (, 0x0000000000000000)
    JavaMain+0xddc02d38 (, 0x0000000000000000)
    .
    

Local fix

  • No workaround
    

Problem summary

  • JIT compiler did not generate instruction to reload DSA into
    GPR4 before calling out double remainder helper function, and
    ended up calling helper with garbage value in GPR4 where
    segmentation error occurs while accessing memory at GPR4.
    

Problem conclusion

  • This JDK has been updated to set proper value in GPR4 before
    calling remainder helper function.
    .
    This APAR will be fixed in the following Java Releases:
       8    SR5 FP5   (8.0.5.5)
    .
    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

    IJ02020

  • Reported component name

    JIT

  • Reported component ID

    620700124

  • Reported release

    130

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2017-11-21

  • Closed date

    2017-11-21

  • Last modified date

    2017-11-21

  • 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

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Document Information

Modified date:
21 November 2017