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Informix - Problem description

Problem IT32526 Status: Closed

QUERYING DATA FROM SYSMASTER:SYSCONBLOCK GENERATES ASSERT FAILURE

product:
INFORMIX SERVER / 5725A3900 / E10 - 
Problem description:
Executing below query on sysmaster:sysconblock causes assert
failure:

> echo "select * from sysconblock" | dbaccess sysmaster
Database selected.
No rows found.
Database closed.

Which generates log as below

> onstat -m
IBM Informix Dynamic Server Version 14.10.FC3DE -- On-Line -- Up
64 days 01:49:09 -- 256508 Kbytes
Message Log File:
/informixdir/tmp/online.log
03/31/20 16:36:04 Tue Mar 31 - loguniq 168, logpos 0x526018,
timestamp: 0xdf303a Interval: 10773
03/31/20 16:36:04 Maximum server connections 3
03/31/20 16:36:04 Checkpoint Statistics - Avg. Txn Block Time
0.000, # Txns blocked 0, Plog used 7, Llog used 2
03/31/20 16:41:04 Checkpoint Completed: duration was 0 seconds.
03/31/20 16:41:04 Tue Mar 31 - loguniq 168, logpos 0x589018,
timestamp: 0xdf39c0 Interval: 10774
03/31/20 16:41:04 Maximum server connections 3
03/31/20 16:41:04 Checkpoint Statistics - Avg. Txn Block Time
0.000, # Txns blocked 0, Plog used 342, Llog used 99
03/31/20 16:49:53 Assert Failed: Condition Failed (Bad
allocation size (0) for pool 'mt' (0x44ffe040)), In
(mt_shm_malloc_segid)
03/31/20 16:49:53 IBM Informix Dynamic Server Version
14.10.FC3DE
03/31/20 16:49:53  Who: Session(374, informix@hostname, 25688,
0x45fbf988)
               Thread(6871, sqlexec, 45f7a548, 1)
               File: mtshpool.c Line: 4710
03/31/20 16:49:53  Action: Please notify IBM Informix Technical
Support.
03/31/20 16:49:53 stack trace for pid 30514 written to
/informixdir/tmp/af.1ebf5890
03/31/20 16:49:53  See Also:
/informixdir/tmp/af.1ebf5890, shmem.1ebf5890.0
03/31/20 16:49:59 Condition Failed (Bad allocation size (0) for
pool 'mt' (0x44ffe040)), In (mt_shm_malloc_segid)

Assert Failure file contains the following stack:

afstack
afhandler
affail_interface
mem_asfail
mt_shm_malloc_segid
mt_malloc
mt_realloc
mt_aio_vfprintf
gcv_vfprintf
ex_gcv_print
smi_opexplain
smi_storeexplainflags
prconblock
pstread
rsread
fmread
readseq_single
gettupl
scan_next
getrow
fetchrow
exfetch
sql_nfetch
sq_nfetch
sqmain
spawn_thread
th_init_initgls
startup
Problem Summary:
****************************************************************
* USERS AFFECTED:                                              *
* Users of Informix Server prior to 14.10.xC4.                 *
****************************************************************
* PROBLEM DESCRIPTION:                                         *
* See Error Description                                        *
****************************************************************
* RECOMMENDATION:                                              *
* Update to Informix Server 14.10.xC4.                         *
****************************************************************
Local Fix:
Solution
Workaround
not known / see Local fix
Timestamps
Date  - problem reported    :
Date  - problem closed      :
Date  - last modified       :
10.04.2020
09.06.2020
09.06.2020
Problem solved at the following versions (IBM BugInfos)
Problem solved according to the fixlist(s) of the following version(s)
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