PH68366: TIMEOUT VALUES STORED IN LOCAL VARIABLES CAN BE OVERWRITTEN WITH INVALID VALUES AFTER THE LOCAL VARIABLES GO OUT OF SCOPE

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• Timeout values stored in local variables can be overwritten with
  invalid values after the local variables go out of scope
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: Classic Federation Server, Version 11.3      *
  *                 Classic CDC for IMS, Version 11.3            *
  *                 Classic CDC for VSAM, Version 11.3           *
  *                 Data Replication for VSAM, Version 11.3      *
  *                 Data Replication for IMS, Version 11.3       *
  *                 VSAM Remote Source, Version 11.4             *
  *                 IMS Remote Source, Version 11.4              *
  *                 CDC Replication Engine for Db2 for z/OS      *
  *                 Remote Source                                *
  *                 IBM Data Replication for Db2  z/OS           *
  *                 Cartridge                                    *
  ****************************************************************
  * PROBLEM DESCRIPTION: Timeout values stored in local          *
  *                      variables can be overwritten with       *
  *                      invalid values after the local          *
  *                      variables go out of scope.              *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  When an event timer is created, it takes the address of a
  timeout value. The idea is that the timeout can be changed
  through configuration. However, many timeout values are
  hard-coded. The hard-coded values are often placed into local
  variables. In some cases, the function ends, making the local
  variable go out of scope. The address of the local variable can
  be used for anything else on the stack, causing the timeout
  value to be overwritten. This could lead to waits of unknown
  length. The memory must remain valid until the dispatcher ends
  or the event is removed.
  

Problem conclusion

• Replaced local variables containing timeout values with static
  variables.
  

Temporary fix

Comments

APAR Information

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

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

  UO05595 UO05596 UO05597

Modules/Macros

•    CECCDISP CECCLRDH CECCLRDQ CECCLRIC CECCLRIH
  CECCLRSM CECCLRSR CECCLRVC CECCLRVH CECCLRVR CECCMAPF CECCPACM
  CECCPAPF CECCUTIL CECREPC1 CECREPL2 CECREPL3 CECREPL4 CECREPL6
  

Fix information

• Fixed component name

  CLASSIC FED & E

• Fixed component ID

  5697I8200

Applicable component levels

• RB3G PSY UO05596

     UP25/11/01 P F510

• RB3J PSY UO05597

     UP25/11/01 P F510

• RB30 PSY UO05595

     UP25/11/01 P F510

Fix is available

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