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IZ94556: CRASH IN __CHARTOBYTELENGTH DURING JNI CALL DUE TO ZERO BYTE ALL OCATION

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APAR status

  • Closed as program error.

Error description

  • Error Message: N/A
.
Stack Trace:

The failing stack trace includes the following fragment:

...
dbgMalloc +00000082 *PATHNAM
_CharToByteLength +00000374 *PATHNAM
IBMZOS_GetStringPlatformLength +0000007E *PATHNAM
GetStringPlatformLength +00000072 *PATHNAM
GetStringPlatformLength +0000001C *PATHNAM
...

Local fix

  • 



Problem summary


    

  • __CharToByteLength function used strlen to calculate the string
size. For unicode string, the first byte can be '00' for DBCS
character. If the first character in the string is a DBCS
character with first byte '00', then the length of the string is
calculated as 0 and result in zero byte allocation.

    



Problem conclusion


    

  • This defect will be fixed in:
5.0.0 SR12 FP5
.
JVM is modified to correctly calculate the unicode string size
and there by avoid zero byte allocation.
.
To obtain the fix:
Install build 20110422 or later

    



Temporary fix


    

  • 



Comments


    

  • 



APAR Information




    

  • APAR number
    IZ94556
    • 

  • Reported component name
    JAVA 5 CLASS LI
    • 

  • Reported component ID
    620500130
    • 

  • Reported release
    500
    • 

  • Status
    CLOSED  PER
    • 

  • PE
    NoPE
    • 

  • HIPER
    NoHIPER
    • 

  • Special Attention
    NoSpecatt
    • 

  • Submitted date
    2011-02-09
    • 

  • Closed date
    2011-04-26
    • 

  • Last modified date
    2011-04-26
    • 





    

  • 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 5 CLASS LI
    • 

  • Fixed component ID
    620500130
    • 



Applicable component levels


    

  • R500  PSN
       UP
    • 








      
              
                            

              

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Document Information


            

            


                        

            Modified date:
            

            26 April 2011
            

            
                      

        


        

        


      

    

  



    

  

  
    
            

          
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