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IV25382: CRASH IN JIT RUN-TIME LIBRARY IN REPLACETRAMPOLINE

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You can track all active APARs for this component.

 

APAR status

  • Closed as program error.

Error description

  • Error Message: A SIGSEGV/GPF is raised by the Java JIT run-time
library code that manages code caches. This crash only occurs if
the JVM is running on a 64-bit x86-based processor.
.
Stack Trace: TR_MCCCodeCache::replaceTrampoline
TR_MCCManager::replaceTrampoline
mcc_replaceTrampoline
amd64CodePatching
TR_MCCCodeCache::patchTrampoline
TR_MCCCodeCache::patchCallPoint
mcc_callPointPatching_unwrapper
jitCallCFunction
mergedStaticGlueCallFixer
.

Local fix

  • N/A

Problem summary

  • On x86-64, if a JIT-compiled method calls an interpreted method,
the JIT compiler generates a special data structure in the
current code cache. If another code cache becomes current before
the compilation has completed, the data structure in the
original current code cache becomes obsolete, and future
searches for this data structure in the current code cache will
fail, which will cause the JVM to crash.

Problem conclusion

  • This defect will be fixed in:
7.0.0 SR3
6.0.1 SR4
5.0.0 SR15
.
The JIT compiler has been modified to re-reserve space for a new
data structure for the interpreter dispatch if it detects that
the current code cache has been switched.

Temporary fix

  • N/A

Comments

  • 



APAR Information




    

  • APAR number
    IV25382
    • 

  • Reported component name
    JAVA 5 JIT
    • 

  • Reported component ID
    620500124
    • 

  • Reported release
    500
    • 

  • Status
    CLOSED  PER
    • 

  • PE
    NoPE
    • 

  • HIPER
    NoHIPER
    • 

  • Special Attention
    NoSpecatt
    • 

  • Submitted date
    2012-07-30
    • 

  • Closed date
    2012-07-30
    • 

  • Last modified date
    2012-07-30
    • 





    

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

    
IV25380
    

    • 

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

    • 



Fix information


    

  • Fixed component name
    JAVA 5 JIT
    • 

  • Fixed component ID
    620500124
    • 



Applicable component levels


    

  • R500  PSY
       UP
    • 








      
              
                            

              

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Document Information


            

            


                        

            Modified date:
            

            30 July 2012
            

            
                      

        


        

        


      

    

  



    

  

  
    
            

          
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