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IV00020: CRASH WHEN ATTEMPTING TO LOAD A CORRUPTED CLASS

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You can track all active APARs for this component.

 

APAR status

  • Closed as program error.

Error description

  • Error Message: When attempting to load a corrupted class the JVM
will either crash (stacktrace below) or generate an Out Of
Memory Error
.
Stack Trace: memcpy ()
readAttributes ()
readMethods ()
j9bcutil_readClassFileBytes ()
j9bcutil_createRomClassEndian ()
j9bcutil_createRomClass ()
callDynamicLoader ()
internalLoadROMClass ()

createROMClassFromClassFile ()
internalDefineClass ()
defineClassCommon ()
.

Local fix

  • Ensure class is not corrupted

Problem summary

  • The problem is caused by a corrupted class file.

Problem conclusion

  • This defect will be fixed in:
6.0.0 SR9 FP2
5.0.0 SR12 FP5
.
The JVM has been updated to be more vigilant when attempting to
load class files
.
To obtain the fix:
Install build 20110212 or later

Temporary fix

  • 



Comments


    

  • 



APAR Information




    

  • APAR number
    IV00020
    • 

  • Reported component name
    J9 COMMON CODE
    • 

  • Reported component ID
    620700127
    • 

  • Reported release
    600
    • 

  • Status
    CLOSED  PER
    • 

  • PE
    NoPE
    • 

  • HIPER
    NoHIPER
    • 

  • Special Attention
    NoSpecatt
    • 

  • Submitted date
    2011-05-09
    • 

  • Closed date
    2011-05-09
    • 

  • Last modified date
    2011-07-14
    • 





    

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

    • 

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

    
IV00030
    

    • 



Fix information


    

  • Fixed component name
    J9 COMMON CODE
    • 

  • Fixed component ID
    620700127
    • 



Applicable component levels


    

  • R600  PSY
       UP
    • 








      
              
                            

              

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Document Information


            

            


                        

            Modified date:
            

            14 July 2011
            

            
                      

        


        

        


      

    

  



    

  

  
    
            

          
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