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IV97537: INVALID CODE GENERATED WHEN PERFORMING UNSAFE.COPYMEMORY

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APAR status

  • Closed as program error.

Error description

  • Error Message: A crash in JIT library.
.
Stack Trace: N/A
.
This problem only occurs on X86 systems.

Local fix

  • 



Problem summary


    

  • The JIT compiler may optimize calls to Unsafe.copyMemory. In
some cases the JIT compiler may not pass the parameters to the
method in the correct order which results in the incorrect
values being used for the memory copying, causing a crash.

    



Problem conclusion


    

  • The JIT compiler has been updated to parse the arguments in the
correct order.
.
This APAR will be fixed in the following Java Releases:
   6 R1 SR8 FP50  (6.1.8.50)
   7    SR10 FP10 (7.0.10.10)
   8    SR4 FP10  (8.0.4.10)
   7 R1 SR4 FP10  (7.1.4.10)
.
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
    IV97537
    • 

  • Reported component name
    JIT
    • 

  • Reported component ID
    620700124
    • 

  • Reported release
    260
    • 

  • Status
    CLOSED  PER
    • 

  • PE
    NoPE
    • 

  • HIPER
    NoHIPER
    • 

  • Special Attention
    NoSpecatt / Xsystem
    • 

  • Submitted date
    2017-06-27
    • 

  • Closed date
    2017-07-11
    • 

  • Last modified date
    2018-01-30
    • 





    

  • 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


    








      
              
                            

              

              [{"Business Unit":{"code":"BU048","label":"IBM Software"},"Product":{"code":"SSC9HBA","label":"Just In Time (JIT) Compiler"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"260","Edition":"","Line of Business":{"code":"","label":""}}]
              

                          

          
 
        

      

    

      

        

          

            
Document Information


            

            


                        

            Modified date:
            

            30 January 2018
            

            
                      

        


        

        


      

    

  



    

  

  
    
            

          
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