IV30269: THE JVM CRASH WITH VMSTATE 0X53EFF

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APAR status

  • Closed as program error.

Error description

  • Error Message: the JVM exits with with vmState <OSB>0x53eff<CSB>
    vmState <OSB>0x53eff<CSB>: {J9VMSTATE_JIT_CODEGEN}
    {stringPeepholes}
    .
    Stack Trace: j> 12:42:26 Unhandled exception
    j> 12:42:26 Type=Segmentation error vmState=0x00053eff
    j> 12:42:26 J9Generic_Signal_Number=00000004
    Signal_Number=0000000b Error_Value=00000000 Signal_Code=00000001
    j> 12:42:26 Handler1=B6D0EF6A Handler2=B6CB3C27
    InaccessibleAddress=0000001E
    j> 12:42:26 EDI=00000001 ESI=097BC710 EAX=00000004 EBX=B6986DD0
    j> 12:42:26 ECX=747D5970 EDX=0924C84C
    j> 12:42:26 EIP=B672B9C8 ES=007B DS=007B ESP=747D58E0
    j> 12:42:26 EFlags=00010202 CS=0073 SS=007B EBP=747D5970
    j> 12:42:26
    Module=/jtctest/sdk_installs/pxi3280/pxi3280-20120610_01/ibm-jav
    a-i386-80/jre/lib/i386/default/libj9jit27.so
    j> 12:42:26 Module_base_address=B6295000
    j> 12:42:26
    j> 12:42:26
    Method_being_compiled=com/ibm/jtc/svt/tests/invoke/BasicTest2.te
    stVarargsCollector()V
    j> 12:42:26 Target=2_70_20120609_112918 (Linux
    2.6.16.60-0.85.1-bigsmp)
    j> 12:42:26 CPU=x86 (4 logical CPUs) (0xfd69e000 RAM)
    j> 12:42:26 ----------- Stack Backtrace -----------
    j> 12:42:26 (0xB6CA5100 <OSB>libj9prt27.so+0x10100<CSB>)
    j> 12:42:26 (0xB6CB4BD2 <OSB>libj9prt27.so+0x1fbd2<CSB>)
    j> 12:42:26 (0xB6CA4DF1 <OSB>libj9prt27.so+0xfdf1<CSB>)
    j> 12:42:26 (0xB6CA4EE5 <OSB>libj9prt27.so+0xfee5<CSB>)
    j> 12:42:26 (0xB6CA49F4 <OSB>libj9prt27.so+0xf9f4<CSB>)
    j> 12:42:26 (0xB6CB4BD2 <OSB>libj9prt27.so+0x1fbd2<CSB>)
    j> 12:42:26 (0xB6CA4963 <OSB>libj9prt27.so+0xf963<CSB>)
    j> 12:42:26 (0xB6D0E395 <OSB>libj9vm27.so+0x20395<CSB>)
    j> 12:42:26 (0xB6CB4BD2 <OSB>libj9prt27.so+0x1fbd2<CSB>)
    j> 12:42:26 (0xB6D0E69E <OSB>libj9vm27.so+0x2069e<CSB>)
    j> 12:42:26 (0xB6D0EFB8 <OSB>libj9vm27.so+0x20fb8<CSB>)
    j> 12:42:26 (0xB6CB3DF5 <OSB>libj9prt27.so+0x1edf5<CSB>)
    j> 12:42:26 __kernel_rt_sigreturn+0x0 (0xFFFFE440)
    j> 12:42:26 (0x097BC76C <OSB><unknown>+0x0<CSB>)
    .
    

Local fix

  • One could disable Stringpeepholes with
    -Xjit:disableStringpeepholes
    

Problem summary

  • the JIT crashes (Unhandled exception, 0x53eff)   when java code
    contains a sequence similar to the following:
    (new StringBuilder()).append(arg1).append(arg2).toString()
    

Problem conclusion

  • This defect will be fixed in:
    7.0.0 SR3
    6.0.1 SR4
    .
    The jit has been updated to prevent the crash when the optimizer
    encounters the pattern above.
    

Temporary fix

Comments

APAR Information

  • APAR number

    IV30269

  • Reported component name

    JIT

  • Reported component ID

    620700124

  • Reported release

    260

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2012-10-15

  • Closed date

    2012-10-15

  • Last modified date

    2012-10-15

  • 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 #:

IV30269

Modified date:

2012-10-15

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