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IV21124: APPLICATION CRASHES WHILE INVOKING MULTICASTSOCKET.SETNETWORKINT ERFACE() CALL IN A MULTI-THREADED ENVIRONMENT

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APAR status

  • Closed as program error.

Error description

  • Error Message: JVM crashes with a SIGSEGV in libj9prt23.so.
.
Stack Trace: at
java/net/PlainDatagramSocketImpl.socketSetOption(Native Method)
 at
java/net/PlainDatagramSocketImpl.setOption(PlainDatagramSocketIm
pl.java)
 at
java/net/MulticastSocket.setNetworkInterface(MulticastSocket.jav
a)
or
at java/net/PlainDatagramSocketImpl.socketSetOption(Native
Method)
at
java/net/PlainDatagramSocketImpl.setOption(PlainDatagramSocketIm
pl.java:419)

at
java/net/MulticastSocket.setInterface(MulticastSocket.java:435)
.

Local fix

  • 



Problem summary


    

  • The issue was caused due to a thread race condition while
accessing a variable before it is getting initialized.

    



Problem conclusion


    

  • This defect will be fixed in:
6.0.0 SR11
6.0.1 SR3
.
JVM is updated to ensure that variable is initialized before it
is accessed by other threads

    



Temporary fix


    

  • 



Comments


    

  • 



APAR Information




    

  • APAR number
    IV21124
    • 

  • Reported component name
    JAVA CLASS LIBS
    • 

  • Reported component ID
    620700130
    • 

  • Reported release
    600
    • 

  • Status
    CLOSED  PER
    • 

  • PE
    NoPE
    • 

  • HIPER
    NoHIPER
    • 

  • Special Attention
    NoSpecatt
    • 

  • Submitted date
    2012-05-14
    • 

  • Closed date
    2012-05-27
    • 

  • Last modified date
    2012-05-27
    • 





    

  • 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
    JAVA CLASS LIBS
    • 

  • Fixed component ID
    620700130
    • 



Applicable component levels


    

  • R600  PSY
       UP
    • 








      
              
                            

              

              [{"Business Unit":{"code":"BU048","label":"IBM Software"},"Product":{"code":"SSCVQ3Y","label":"Java Class Libraries"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"6.0","Edition":"","Line of Business":{"code":"","label":""}}]
              

                          

          
 
        

      

    

      

        

          

            
Document Information


            

            


                        

            Modified date:
            

            27 May 2012
            

            
                      

        


        

        


      

    

  



    

  

  
    
            

          
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