IT23576: runmqchi terminates with memory exception in rriCheckChannels

APAR status

• Closed as program error.

Error description

• The MQ channel initiator process runmqchi terminates
  unexpectedly because of a memory
  exception(SIGSEGV on UNIX/LINUX). The following Failure Data
  Capture (FDC) records might be generated during the failure.
  
    Probe Id          :- XC130003
    Component         :- xehExceptionHandler
    Program Name      :- runmqchi
    Thread            :- 1    ChannelInitiator
    Major Errorcode   :- STOP
    Probe Type        :- HALT6109
    Arith1            :- 11 (0xb)
    Comment1          :- SIGSEGV: address not mapped
  (0x7fbb19334e30)
  
    MQM Function Stack
    riiInitiator
    riiCheckChannels
    xcsFFST
  
    Probe Id          :- RM058101
    Component         :- riiCheckChannels
    Program Name      :- runmqchi
    Thread            :- 1    ChannelInitiator
    Major Errorcode   :- STOP
    Probe Type        :- HALT6109
  
    MQM Function Stack
    riiInitiator
    riiCheckChannels
    xcsFFST
  

Local fix

• Restart the channel initiator.
  

Problem summary

• ****************************************************************
  USERS AFFECTED:
  Users using MQ channel initiators
  
  
  Platforms affected:
  MultiPlatform
  
  ****************************************************************
  PROBLEM DESCRIPTION:
  This problem occurred because runmqchi process did not correctly
  manage the memory references associated with the channels and
  this caused the process to access an incorrect memory address,
  which resulted in a memory exception.
  

Problem conclusion

• The MQ channel initiator logic has been corrected to prevent the
  illegal memory access.
  
  ---------------------------------------------------------------
  The fix is targeted for delivery in the following PTFs:
  
  Version    Maintenance Level
  v8.0       8.0.0.9
  v9.0 CD    9.0.5
  v9.0 LTS   9.0.0.4
  
  The latest available maintenance can be obtained from
  'WebSphere MQ Recommended Fixes'
  http://www-1.ibm.com/support/docview.wss?rs=171&uid=swg27006037
  
  If the maintenance level is not yet available information on
  its planned availability can be found in 'WebSphere MQ
  Planned Maintenance Release Dates'
  http://www-1.ibm.com/support/docview.wss?rs=171&uid=swg27006309
  ---------------------------------------------------------------
  

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:

Fix information

• Fixed component name

  IBM MQ BASE MP

• Fixed component ID

  5724H7251

Applicable component levels