PH49928: AMS STARTED TASK RETURNS CSQ0607E %EFT1 CSQ0DLCL INSUFFICIENT STORAGE AVAILABLE

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• User reports, during workload testing, the Advanced Message
  Security task generates messages CSQ0215E CSQ0217E and CSQ0607E
  indicating that insufficient storage is available. MQ
  Development finds, in reviewing LE heappool trace, that a
  storage leak is occurring during unprotect processing,  when
  getting from a queue protected with a confidentiality policy
  that does not allow key reuse, depending on the size of an
  internal buffer obtained/cached for the lifetime of the handle.
  Impact is seen in storage subpool 2 key 7. SP2 K7
  .
  CSQ0215E CSQ0CPUT Message protection failed, return code 8,
  reason 04491004
  .
  CSQ0217E CSQ0CPUT Failed to process object 'protected buffer'
  .
  CSQ0607E CSQ0DLCL Insufficient storage available
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All users of IBM MQ for z/OS Version 9       *
  *                 Release 2 Modification 0 and                 *
  *                 Release 3 Modification 0.                    *
  ****************************************************************
  * PROBLEM DESCRIPTION: Storage leak in the xxxxAMSM address    *
  *                      space when getting messages from a      *
  *                      queue that is protected by a            *
  *                      Confidentiality policy with Key Reuse=0 *
  *                                                              *
  *                      Symptoms can include:                   *
  *                      - Message CSQ0607E reporting            *
  *                      insufficient storage available.         *
  *                      - Other CSQ0xxxE error messages,        *
  *                      including, but not limited to CSQ0215E, *
  *                      CSQ0214E and CSQ0217E.                  *
  *                      - Error CEE0813S reporting insufficient *
  *                      storage to satisfy a get request in the *
  *                      xxxxAMSM SYSOUT DD.                     *
  *                      - MQI calls failing with various MQRC   *
  *                      errors including:                       *
  *                      MQRC_SECURITY_ERROR (MQRC 2063),        *
  *                      MQRC_STORAGE_NOT_AVAILABLE (MQRC 2071), *
  *                      or MQRC_CONNECTION_NOT_AUTHORIZED       *
  *                      (MQRC 2217).                            *
  ****************************************************************
  When getting a protected message from a queue with a
  Confidentiality policy with Key Reuse=0, an area of storage is
  obtained for caching information about the message but is not
  subsequently used due to the Key Reuse value of 0.
  When the queue is subsequently closed, this area of storage is
  not always freed correctly, and can be leaked.
  Over time an accumulation of these areas can lead to storage
  exhaustion (SOS) in the xxxxAMSM address space, and prevent
  further MQI calls succeeding.
  

Problem conclusion

• The leaked area of storage is no longer obtained when getting
  from a queue where the policy specifies Key Reuse=0;
  

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:

  UI83192 UI83193

Modules/Macros

• CSQ0DUNP
  

Fix information

• Fixed component name

  IBM MQ Z/OS V9

• Fixed component ID

  5655MQ900

Applicable component levels

• R200 PSY UI83193

     UP22/11/29 P F211 ¢

• R300 PSY UI83192

     UP22/11/29 P F211 ¢

Fix is available

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