IT14485: ASSERT FAILURE AND CRASH POSSIBLE DURING CSM VP INITIALIZATION WHEN MULTIPLE CPU VPS ARE CONFIGURED

APAR status

• Closed as program error.

Error description

• An Assert Failure and crash may occur on instances configured
  with multiple CPU VPs when a number of simultaneous connection
  attempts are made on IDS ports that are enabled for CSS
  communications. The AF file includes:
  
  16:46:50  Assert Failed: No Exception Handler
  16:46:50   Who: Session(8508, informix@, 0, 0x25e418df8)
                  Thread(8583, /opt/informix/lib/csm/libixspw.so,
  25e3e3f28, 29)
                  File: mtex.c Line: 490
  16:46:50   Results: Exception Caught. Type: MT_EX_OS, Context:
  mem
  16:46:50   Action: Please notify IBM Informix Technical Support.
  ...
  16:46:50  Stack for thread: 8583
  /opt/informix/lib/csm/libixspw.so
  
   base: 0x0000000261525000
    len:   69632
     pc: 0x0000000001309303
    tos: 0x0000000001c15630
  state: running
     vp: 29
  
  (oninit) afstack
  (oninit) mt_ex_throw_sig
  (oninit) afsig_handler
  (Linux) <signal frame>
  (oninit) csmvp_dispatch
  (oninit) csmvp_thread
  (oninit) th_init_initgls
  (oninit) startup
  
  Note that this failure occurs on a CSM VP.
  

Local fix

• Start instance with a single CPU VP and then add further CPU VPs
  using the onmode command. Note that only one CSM VP will be
  started in this scenario.
  

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  * Users using CSM for encrypted client communication with      *
  * multiple CPU/CSM vp's                                        *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * See Error Description                                        *
  ****************************************************************
  * RECOMMENDATION:                                              *
  * Update to IBM Informix Server 11.70.xC9                      *
  ****************************************************************
  

Problem conclusion

• Problem Fixed In IBM Informix Server 11.70.xC9
  

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

• RB10 PSN

     UP

• RB10 PSY

     UP

• RB70 PSN

     UP

• RB70 PSY

     UP