IT12225: ASSERT FAIL SEGV CAN OCCUR FREEING MEMORY FROM UDR_END_SEQUENCE_INTERNAL

APAR status

• Closed as program error.

Error description

• Assert failure / segv can occur freeing memory from
  udr_end_sequence_internal.
  
  The stack trace is typically similar to:
  
  (oninit) afstack
  (oninit) mt_ex_throw_sig
  (oninit) afsig_handler
  (Linux) <signal frame>
  (oninit) mt_free
  (oninit) udr_end_sequence_internal
  (oninit) udr_end_sequence
  (oninit) routine_shutdown_ue
  (oninit) closesdb
  (oninit) doreleasesdb
  (oninit) parsecmd
  (oninit) sqcmd
  (oninit) sq_cmnd
  (oninit) sq_prepare
  (oninit) sqmain
  (oninit) spawn_thread
  (oninit) th_init_initgls
  (oninit) startup
  
  Another stack seen looks like:
  
  (/opt/ibm/informix/bin/oninit) afstack
  (/opt/ibm/informix/bin/oninit)
  mt_ex_throw_sig
  (/opt/ibm/informix/bin/oninit) afsig_handler
  (Linux) <signal frame>
  (/opt/ibm/informix/bin/oninit) old_rhpfree
  (/opt/ibm/informix/bin/oninit)
  udr_end_sequence
  (/opt/ibm/informix/bin/oninit)
  routine_shutdown_ue
  (/opt/ibm/informix/bin/oninit) closesdb
  (/opt/ibm/informix/bin/oninit) doreleasesdb
  (/opt/ibm/informix/bin/oninit) sq_release
  (/opt/ibm/informix/bin/oninit) sqmain
  (/opt/ibm/informix/bin/oninit) spawn_thread
  (/opt/ibm/informix/bin/oninit)
  th_init_initgls
  (/opt/ibm/informix/bin/oninit) startup
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  * Customers using bson functions under low memory environment  *
  * can experience the error once the memory limits are reached. *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * See Error Description                                        *
  ****************************************************************
  * RECOMMENDATION:                                              *
  * Update to IBM Informix Server 12.10.xC7 or increase memory   *
  * configuration in onconfig.                                   *
  ****************************************************************
  

Problem conclusion

• Problem Fixed In IBM Informix Server 12.10.xC7
  

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

  INFORMIX SERVER

• Fixed component ID

  5725A3900

Applicable component levels

• RC10 PSY

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