|
Problem IC79105
|
Status: Closed |
CLIENT MIGHT SEGV (CRASH) IN SQLEUCFREEDIAGINFO() DUE TO DEREFERENCING AN ALREADY FREED MEMORY |
| product: |
DB2 FOR LUW / DB2FORLUW / 970 - DB2 |
| Problem description: |
Client process, like dsmserv, can SEGV (crash) with the
following stack trace:
sqleUCfreeDiagInfo()
sqleuResetUCintfc()
[sqleUCinitUCintfc()]
sqleUCappConnect()
sqleStartUsingDatabase()
sqlubConnectDatabase()
db2Backup()
DB2BackupThread()
StartThread()
The function in '[]' will or not show up depending on the
compiler that was used.
The crash would happen in sqleUCfreeDiagInfo() because we are
trying to dereference
memory that is pointing to freed (and possibly reused) memory.
This might happen if a previous connection attempt would have
failed. |
| Problem Summary: |
****************************************************************
* USERS AFFECTED: *
* ALL *
****************************************************************
* PROBLEM DESCRIPTION: *
* Client process, like dsmserv, can SEGV (crash) with the *
* following stack trace: *
* *
* sqleUCfreeDiagInfo() *
* sqleuResetUCintfc() *
* [sqleUCinitUCintfc()] *
* sqleUCappConnect() *
* sqleStartUsingDatabase() *
* sqlubConnectDatabase() *
* db2Backup() *
* DB2BackupThread() *
* StartThread() *
* *
* The function in '[]' will or not show up depending on the *
* compiler that was used. *
* *
* The crash would happen in sqleUCfreeDiagInfo() because we *
* are *
* trying to dereference *
* memory that is pointing to freed (and possibly reused) *
* memory. *
* This might happen if a previous connection attempt would *
* have *
* failed. *
****************************************************************
* RECOMMENDATION: *
* Upgrade to DB2 UDB version 9.7 fixpack 6. *
**************************************************************** |
| Local Fix: |
|
| available fix packs: |
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 8 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 9 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 9a for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 10 for Linux, UNIX, and Windows
|
| Solution |
Problem was first fixed in DB2 UDB Version 9.7 Fix Pack 6. |
| Workaround |
not known / see Local fix |
| Timestamps |
Date - problem reported :
Date - problem closed :
Date - last modified :
| 06.10.2011
11.06.2012
11.06.2012 |
| Problem solved at the following versions (IBM BugInfos) |
9.7.FP6
|
| Problem solved according to the fixlist(s) of the following version(s) |
| 9.7.0.6
|
 |
