IT35810: IBM MQ Appliance might reload when a file is downloaded using WebUI or REST API

APAR status

• Closed as program error.

Error description

• A SIGSEGV is reported when a file is downloaded using WEBUI or
  REST API.
  The backtraces generated at the time of the reload shows the
  following:
  
  
  Died from signal 11 (SEGV)
  Reason Hint: [Crash! Perhaps a bad ptr?]
  Referencing 0x00007f93c57fb000 at 0x2b2b075 in
  dpStreamBase64EncodeFast::base64EncodeBlock(char*, int, char**)
  + 0x105
  Component=xmlfirewall, Domain=default, Config=map
  Action=1, ActionName=map-match_90_304
  

Local fix

• As a workaround, users could consider using cli based
  options (copy command) for file download.
  

Problem summary

• ****************************************************************
  USERS AFFECTED:
  All MQ Appliance user using Web UI or REST API to download MQ
  logs.
  
  
  Platforms affected:
  MultiPlatform
  
  ****************************************************************
  PROBLEM DESCRIPTION:
  WebUI and REST API can be used to download MQ logs, however,
  this had the potential to cause the MQ Appliance to reload due
  to a buffer overflow issue that caused the SIGSEGV error visible
  in the diagnostics.
  

Problem conclusion

• The MQ Appliance code has been modified fix the SIGSEGV error
  that caused the Appliance reload.
  
  ---------------------------------------------------------------
  The fix is targeted for delivery in the following PTFs:
  
  Version    Maintenance Level
  v9.2 LTS   9.2.0.3
  v9.x CD    9.2.4
  
  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

  MQ APPL M2002 V

• Fixed component ID

  5737H4701

Applicable component levels

• R920 PSY

     UP