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LI79172: EXCEPTION IN CMECS WHEN NULL JCID PROVIDED

A fix is available

Communications Server for Linux, Version 6.4 -- Latest Fixpack

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APAR status

  • Closed as program error.

Error description

  • Java application encounters javacore on cmsend.

Local fix

  • 



Problem summary


    

  • USERS AFFECTED: All users of Java CPI-C

PROBLEM DESCRIPTION:
javacore.txt data shows:
Dump Event "gpf" (00002000) received
Request Flags: 0x81 (exclusive+preempt)
Prep State: 0x100 ()
Exclusive VM access not taken: data may not be
----------------------------------------------
GPINFO subcomponent dump routine
J9Generic_Signal_Number: 00000004
Signal_Number: 0000000B
Error_Value: 00000000
Signal_Code: 00000002
Handler1: F7EDBCD2
Handler2: F7EA01B1
InaccessibleAddress: D6B7C000
The native callstack includes:
Java_COM_ibm_eNetwork_cpic_CPIC_cmsend+0x51

PROBLEM SUMMARY:
A previous fix (APAR LI78373) fails to release back memory
pinned by the JNI in an error case (for instance when cmsend
passes a null). This could cause the Java garbage collector to
run out of memory.

    



Problem conclusion


    

  • Code has been changed to release memory properly in this case.

    



Temporary fix


    

  • 



Comments


    

  • 



APAR Information




    

  • APAR number
    LI79172
    • 

  • Reported component name
    CS FOR LINUX
    • 

  • Reported component ID
    5724I3300
    • 

  • Reported release
    640
    • 

  • Status
    CLOSED  PER
    • 

  • PE
    NoPE
    • 

  • HIPER
    NoHIPER
    • 

  • Special Attention
    NoSpecatt / Xsystem
    • 

  • Submitted date
    2016-08-05
    • 

  • Closed date
    2016-08-05
    • 

  • Last modified date
    2016-08-05
    • 





    

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

    
LI79171
    

    • 

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

    
IV92234 LI79472
    

    • 



Fix information


    

  • Fixed component name
    CS FOR LINUX
    • 

  • Fixed component ID
    5724I3300
    • 



Applicable component levels


    

  • R640  PSY  
       
    • 








      
              
                            

              

              [{"Business Unit":{"code":"BU058","label":"IBM Infrastructure w\/TPS"},"Product":{"code":"SSHQLW","label":"Communications Server for Linux"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"640","Line of Business":{"code":"LOB35","label":"Mainframe SW"}}]
              

                                                                    

          
 
        

      

    

      

        

          

            
Document Information


            

            


                        

            Modified date:
            

            14 October 2021
            

            
                      

        


        

        


      

    

  



    

  

  
    
            

          
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