IC64702: ERROR HANDLING FOR EXTERNAL MEMORY OVERWRITE NULL POINTER

DB2 Version 9.7 Fix Pack 1 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 2 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 3 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 3a for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 4 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 5 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 6 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 7 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 9a for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 8 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 9 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 10 for Linux, UNIX, and Windows

APAR status

• Closed as program error.

Error description

• #76 <signal handler called>
  #77 0x0e8a55ac in CLI_stpDescribeCall ()
     from
  /home2/dbguest3/tmp/libs/opt/IBM/db2/V8.1/lib/libdb2.so.1
  #78 0x0e824a50 in SQLDescribeParam2 ()
     from
  /home2/dbguest3/tmp/libs/opt/IBM/db2/V8.1/lib/libdb2.so.1
  #79 0x0e824144 in SQLDescribeParam ()
     from
  /home2/dbguest3/tmp/libs/opt/IBM/db2/V8.1/lib/libdb2.so.1
  #80 0x0eecc534 in
  Java_COM_ibm_db2_jdbc_app_DB2CallableStatement_SQLBindOutParamet
  er () from
  /home2/dbguest3/tmp/libs/opt/IBM/db2/V8.1/lib/libdb2jdbc.so.1
  #81 0x8d5f1dd8 in ?? ()
  
  This appears to be an external memory overwrite, so a check was
  added to make sure that a pointer is valid.
  

Local fix

• n/a
  

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  * CLI                                                          *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * ERROR HANDLING FOR EXTERNAL MEMORY OVERWRITE NULL POINTER    *
  *                                                              *
  * #76 <signal handler called>                                  *
  *                                                              *
  * #77 0x0e8a55ac in CLI_stpDescribeCall ()                     *
  *                                                              *
  *    from                                                      *
  *                                                              *
  * /home2/dbguest3/tmp/libs/opt/IBM/db2/V8.1/lib/libdb2.so.1    *
  *                                                              *
  * #78 0x0e824a50 in SQLDescribeParam2 ()                       *
  *                                                              *
  *    from                                                      *
  *                                                              *
  * /home2/dbguest3/tmp/libs/opt/IBM/db2/V8.1/lib/libdb2.so.1    *
  *                                                              *
  * #79 0x0e824144 in SQLDescribeParam ()                        *
  *                                                              *
  *    from                                                      *
  *                                                              *
  * /home2/dbguest3/tmp/libs/opt/IBM/db2/V8.1/lib/libdb2.so.1    *
  *                                                              *
  * #80 0x0eecc534 in                                            *
  *                                                              *
  * Java_COM_ibm_db2_jdbc_app_DB2CallableStatement_SQLBindOutParam
  * er () from                                                   *
  *                                                              *
  * /home2/dbguest3/tmp/libs/opt/IBM/db2/V8.1/lib/libdb2jdbc.so.1
  *                                                              *
  * #81 0x8d5f1dd8 in ?? ()                                      *
  ****************************************************************
  * RECOMMENDATION:                                              *
  * db2_v97fp2                                                   *
  ****************************************************************
  

Problem conclusion

• This appears to be an external memory overwrite, so a check was
  
  added to make sure that a pointer is valid.
  

Temporary fix

Comments

APAR Information

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

  LI72709

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

Fix information

• Fixed component name

  DB2 FOR LUW

• Fixed component ID

  DB2FORLUW

Applicable component levels

• R970 PSY

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