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URL: https://www.ibm.com/support/pages/apar/IJ10928

⇱ IJ10928: INTERMITTENT CRASH IN THE JAVA JIT COMPILER RUNNING ON Z/OS

IJ10928: INTERMITTENT CRASH IN THE JAVA JIT COMPILER RUNNING ON Z/OS

APAR status

  • Closed as program error.

Error description

  • Error Message: A segmentation error is reported intermittently
during JIT compilation on z/OS.
.
Stack Trace: TR_OSRCompilationData::writeMetaData(unsigned
char*) const+0x156
createMethodMetaData(TR_J9VMBase&,TR_ResolvedMethod*,TR::Compila
tion*)+0xb94
TR::CompilationInfoPerThreadBase::compile(J9VMThread*,TR::Compil
ation*,TR_ResolvedMethod*,T...+0x148c
TR::CompilationInfoPerThreadBase::wrappedCompile(J9PortLibrary*,
void*)+0x1c3c
omrsig_protect+0x79c
TR::CompilationInfoPerThreadBase::compile(J9VMThread*,TR_MethodT
oBeCompiled*,J9::J9SegmentP...+0x4da
TR::CompilationInfoPerThread::processEntry(TR_MethodToBeCompiled
&,J9::J9SegmentProvider&)+0x8de
TR::CompilationInfoPerThread::processEntries()+0x62a
protectedCompilationThreadProc(J9PortLibrary*,TR::CompilationInf
oPerThread*)+0x664
.

Local fix

  • This issue can be worked around by specifying the option
-Xjit:disableOSRSharedSlots. Specifying this option might have
an effect on program performance.

Problem summary

  • The problem is caused by a problem in the C/C++ compiler that is
used to build the JVM. The problem occurs when a buffer that
the Java JIT compiler writes into crosses a memory boundary such
that the addresses of bytes in the buffer switch from having bit
32 set to zero to having that bit set to one.

Problem conclusion

  • The problem was fixed by modifying code in the Java JIT compiler
to avoid the problem with the code generated by the C/C++
compiler used to build the JVM.
.
This APAR will be fixed in the following Java Releases:
 8 SR5 FP26 (8.0.5.26)
.
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
    IJ10928
    • 

  • Reported component name
    JIT
    • 

  • Reported component ID
    620700124
    • 

  • Reported release
    130
    • 

  • Status
    CLOSED PER
    • 

  • PE
    NoPE
    • 

  • HIPER
    NoHIPER
    • 

  • Special Attention
    NoSpecatt / Xsystem
    • 

  • Submitted date
    2018-10-31
    • 

  • Closed date
    2018-10-31
    • 

  • Last modified date
    2018-10-31
    • 





    

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

    • 

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

    • 




    

  • Fixed component name
    JIT
    • 

  • Fixed component ID
    620700124
    • 



Applicable component levels







 
 
 
 

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Document Information


 

 

 Modified date:
 

 31 October 2018