|
Problem IC74426
|
Status: Closed |
INSTANCE MAY CRASH IF THE DOUBLE FREE OCCURS WHEN GETAUTHORITIES TRIES TO FREE THE MEMORY ALREADY FREED. |
| product: |
DB2 FOR LUW / DB2FORLUW / 950 - DB2 |
| Problem description: |
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 Summary: |
****************************************************************
* 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. |
| available fix packs: |
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
|
| Solution |
Problem was first fixed in DB2 UDB Version 9.5 FixPack 8. |
| Workaround |
not known / see Local fix |
| Timestamps |
Date - problem reported :
Date - problem closed :
Date - last modified :
| 11.02.2011
05.07.2011
05.07.2011 |
| Problem solved at the following versions (IBM BugInfos) |
9.5.FP8
|
| Problem solved according to the fixlist(s) of the following version(s) |
| 9.5.0.8
|
 |
