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DB2 - Problem description

Problem IC71933 Status: Closed

DB2WDOG CRASHES WITH A SEGMENTATION VIOLATION.

product:
DB2 FOR LUW / DB2FORLUW / 950 - DB2
Problem description:
The db2wdog EDU may crash with a segmentation violation while it 
is cleaning up resources associated with a FMP process which has 
been terminated by db2agent EDU. 
 
In db2diag.log you will see db2wdog messages related to the FMP 
process clean-up with a NULL "pFmpEntry" followed by a record of 
the crash. 
 
A trap file will be produced containing the stack: 
sqlccfreebuffer 
sqlccfreebuffer 
sqlerCleanThreadResource 
sqlerTerminateFmp 
sqlerReturnFmpToPool 
sqleChildCrashHandler 
...
Problem Summary:
**************************************************************** 
* USERS AFFECTED:                                              * 
* All users of version 9.5 on Linux, Unix and Windows          * 
* platforms.                                                   * 
**************************************************************** 
* PROBLEM DESCRIPTION:                                         * 
* The db2wdog EDU may crash with a segmentation violation      * 
* while it is cleaning up resources associated with a FMP      * 
* process which has been terminated by db2agent EDU.           * 
*                                                              * 
* In db2diag.log you will see db2wdog messages related to the  * 
* FMP process clean-up with a NULL "pFmpEntry" followed by a   * 
* record of the crash.                                         * 
*                                                              * 
* A trap file will be produced containing the stack:           * 
* sqlccfreebuffer                                              * 
* sqlccfreebuffer                                              * 
* sqlerCleanThreadResource                                     * 
* sqlerTerminateFmp                                            * 
* sqlerReturnFmpToPool                                         * 
* sqleChildCrashHandler                                        * 
* ...                                                          * 
**************************************************************** 
* RECOMMENDATION:                                              * 
* Upgrade to DB2 UDB Version 9.5 FixPak 8 or higher levels.    * 
****************************************************************
Local Fix:
N/A.
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
First fixed in DB2 UDB Version 9.5 FixPak 8.
Workaround
N/A.
BUG-Tracking
forerunner  : APAR is sysrouted TO one or more of the following: IC71968 
follow-up : 
Timestamps
Date  - problem reported    :
Date  - problem closed      :
Date  - last modified       :
15.10.2010
27.06.2011
27.06.2011
Problem solved at the following versions (IBM BugInfos)
9.5.
Problem solved according to the fixlist(s) of the following version(s)
9.5.0.8 FixList
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