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Informix - Problem description

Problem IT14485 Status: Closed

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

product:
INFORMIX SERVER / 5725A3900 / B70 - IDS 11.70
Problem 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) 
(oninit) csmvp_dispatch
(oninit) csmvp_thread
(oninit) th_init_initgls
(oninit) startup

Note that this failure occurs on a CSM VP.
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                      *
****************************************************************
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.
Solution
Workaround
not known / see Local fix
Timestamps
Date  - problem reported    :
Date  - problem closed      :
Date  - last modified       :
25.03.2016
30.05.2017
30.05.2017
Problem solved at the following versions (IBM BugInfos)
11.70.xC9
Problem solved according to the fixlist(s) of the following version(s)
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