PM97009: ABENDS0C4 ON MQPUT WITH AN INVALID HOBJ VALUE 13/09/23 PTF PECHANGE

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• CH08,ABN=0C4-00000010,U=PF$BUMN ,C=R3600.701.STAT-
  CSQ7COLL,M=CSQGFRCV,LOC=CSQ7LPLM.CSQ7COLL+00002BBE
  .
  abend0c4 occurred in routine get_WQSTAT called by
  ACCT_MQput because r10 contains blanks and is loaded
  from QRPL.Hobj field :
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All users of WebSphere MQ for z/OS Version 7 *
  *                 Release 0 Modification 1 and Release 1       *
  *                 Modification 0.                              *
  ****************************************************************
  * PROBLEM DESCRIPTION: Abend 0C4 occurs in CSQ7COLL when an    *
  *                      application specifies an invalid hobj   *
  *                      parameter on an MQI call, and class 3   *
  *                      accounting trace is enabled.            *
  *                      The MQI call affected returns MQRC 2195 *
  *                      MQRC_UNEXPECTED_ERROR in place of the   *
  *                      expected MQRC 2019 MQRC_HOBJ_ERROR.     *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  When class 3 accounting is enabled and an MQI call is issued,
  CSQ7COLL is called to collect accounting information relating to
  the MQI call.
  If PM58798 is applied, CSQ7COLL uses the passed hobj to locate
  the mhnd control block related to that handle  if no wqstat
  control block exists for that hobj (i.e. the hobj was not
  returned by an MQOPEN call issued since accounting class 3 was
  started).
  If the application passes an invalid hobj value, the resulting
  location will not contain an mhnd control block. CSQ7COLL will
  validate the storage at the location to confirm that it points
  to a valid mhnd, however if the location is in storage that is
  not accessible (e.g. not allocated, or in fetch protected
  storage), the reported 0C4 abend will occur.
  

Problem conclusion

• CSQ7COLL is changed to validate the hobj value is a valid index
  into the MHPV array, and therefore will result in a valid
  storage location for the mhnd being determined.
  010Y
  100Y
  CSQ7COLL
  CSQ7LQ
  

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:

  UK98054 UK98055

Modules/Macros

• CSQ7COLL CSQ7LQ
  

Fix information

• Fixed component name

  WMQ Z/OS V7

• Fixed component ID

  5655R3600

Applicable component levels

• R010 PSY UK98054

     UP13/10/16 P F310 Ø

• R100 PSY UK98055

     UP13/10/16 P F310 Ø

Fix is available

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