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DB2 - Problembeschreibung

Problem IC74426 Status: Geschlossen

INSTANCE MAY CRASH IF THE DOUBLE FREE OCCURS WHEN GETAUTHORITIES TRIES TO
FREE THE MEMORY ALREADY FREED.

Produkt:
DB2 FOR LUW / DB2FORLUW / 950 - DB2
Problembeschreibung:
Instance may crash if the double free occurs when getAuthorities 
tries to free the memory already freed. 
 
db2diag.log has the following entry. 
 
2009-12-04-06.33.20.075770+540 I29545722G462      LEVEL: Severe 
PID     : 3929                 TID  : 2851072912  PROC : db2sysc 
INSTANCE: db2inst1             NODE : 000         DB   : SAMPLE 
APPHDL  : 0-24716              APPID: 
*LOCAL.db2inst1.091203213334 
AUTHID  : DB2INST1 
EDUID   : 72                   EDUNAME: db2agent (SAMPLE) 
FUNCTION: DB2 UDB, SQO Memory Management, 
sqloDiagnoseFreeBlockFailure, probe:30 
DATA #1 : String, 12 bytes 
Double free. 
 
The trap file contains the stack trace like this. 
 
<StackTrace> 
--Frame--- ------Function + Offset------ 
0xA9EF68A4 sqloCrashOnCriticalMemoryValidationFailure + 0x0017 
        (/home/db2inst1/sqllib/lib32/libdb2e.so.1) 
0xA9EF690C sqlofmblkEx. + 0x0461 
        (/home/db2inst1/sqllib/lib32/libdb2e.so.1) 
0xA9EF6918 _Z9sqlofmblkPv + 0x000b 
        (/home/db2inst1/sqllib/lib32/libdb2e.so.1) 
0xA9EF6924 _Z28sqlerTrustedRtnCallbackFmblkjPPv + 0x001d 
        (/home/db2inst1/sqllib/lib32/libdb2e.so.1) 
0xA9EF695C _Z29sqlerTrustedRtnCallbackRouterjPPv + 0x00de 
        (/home/db2inst1/sqllib/lib32/libdb2e.so.1) 
0xA9EF69A8 getAuthorities + 0x0693 
        (/home/db2inst1/sqllib/bin/routine/db2dbroutext) 
0xA9EF7494 sqloInvokeFnArgs + 0x09d3 
        (/home/db2inst1/sqllib/lib32/libdb2e.so.1)
Problem-Zusammenfassung:
**************************************************************** 
* USERS AFFECTED:                                              * 
* ALL                                                          * 
**************************************************************** 
* PROBLEM DESCRIPTION:                                         * 
* See Error description field for more information.            * 
**************************************************************** 
* RECOMMENDATION:                                              * 
* Upgrade to Version 9.5 FixPack 8.                            * 
****************************************************************
Local-Fix:
Changing SHMMAX to proper value.
verfügbare FixPacks:
DB2 Version 9.5 Fix Pack 8 for Linux, UNIX, and Windows
DB2 Version 9.5 Fix Pack 9 for Linux, UNIX, and Windows
DB2 Version 9.5 Fix Pack 10 for Linux, UNIX, and Windows

Lösung
Problem was first fixed in DB2 UDB Version 9.5 FixPack 8.
Workaround
keiner bekannt / siehe Local-Fix
Weitere Daten
Datum - Problem gemeldet    :
Datum - Problem geschlossen :
Datum - der letzten Änderung:
11.02.2011
05.07.2011
05.07.2011
Problem behoben ab folgender Versionen (IBM BugInfos)
9.5.FP8
Problem behoben lt. FixList in der Version
9.5.0.8 FixList