IBM Support

IV88940: JIT CRASH IN ARRAYCMPSIMDHELPER OR USEREGISTER

Subscribe to this APAR

By subscribing, you receive periodic emails alerting you to the status of the APAR, along with a link to the fix after it becomes available. You can track this item individually or track all items by product.

Notify me when this APAR changes.

Notify me when an APAR for this component changes.

 

APAR status

  • Closed as program error.

Error description

  • Error Message: A Segmentation error is raised by the JIT
compiler
.
Stack Trace: TR_S390Instruction::useRegister
TR_S390RegisterDependencyConditions::bookKeepingRegisterUses
TR_S390Instruction::setDependencyConditions
TR_S390TreeEvaluator::arraycmpSIMDHelper
...
or simply
TR_S390TreeEvaluator::arraycmpSIMDHelper
...
.
This problem only occurs on z Systems.

Local fix

  • This problem can be avoided using the Java command line option
-Xjit:disableSIMD
Note that this can impact performance.

Problem summary

  • This problem was caused by missing null checks in
arraycmpSIMDHelper.

Problem conclusion

  • The JIT compiler has been updated to include the appropriate
null checks in arraycmpSIMDHelper.
.
This APAR will be fixed in the following Java Releases:
   8    SR3 FP20  (8.0.3.20)
.
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
    IV88940
    • 

  • Reported component name
    JIT
    • 

  • Reported component ID
    620700124
    • 

  • Reported release
    130
    • 

  • Status
    CLOSED  PER
    • 

  • PE
    NoPE
    • 

  • HIPER
    NoHIPER
    • 

  • Special Attention
    NoSpecatt / Xsystem
    • 

  • Submitted date
    2016-09-02
    • 

  • Closed date
    2016-09-02
    • 

  • Last modified date
    2016-10-17
    • 





    

  • 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


    

  • R130  PSY
       UP
    • 








      
              
                            

              

              [{"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":"130","Edition":"","Line of Business":{"code":"","label":""}}]
              

                          

          
 
        

      

    

      

        

          

            
Document Information


            

            


                        

            Modified date:
            

            17 October 2016
            

            
                      

        


        

        


      

    

  



    

  

  
    
            

          
Page Feedback