APAR status
Closed as program error.
Error description
MQ appliance reloads after a crash on the SNMP component which causes all HA QMgrs in the reloaded appliance to go into partitioned state. Following errors are recorded in the error report. 20191029T000105.524Z [0x80400084][mgmt][error] : tid(303): bad rc from ioctl, errno 9 The decoded back trace shows the reload was caused by the SNMP component. Died from signal 11 (SEGV) Reason Hint: [Crash! Perhaps a bad ptr?] Referencing 0x0000000000000000 at 0x7f57f6048020 in __strncmp_sse42 + 0x30 Component=snmp, Domain=default, Config=SNMP-Settings WARNING: Executable start address not specified in backtrace Referencing 0x0000000000000000 at 0x7f57f6048020 in __strncmp_sse42 + 0x30 #0 0x7f57f6048020 in __strncmp_sse42 + 0x30, basepointer 0x00007f55ca0a66a0 #1 0x02bb4538 in netsnmp_access_interface_ioctl_has_ipv4 + 0x88, basepointer 0x00007f55ca0a66a0 #2 0x02bb2cb0 in netsnmp_arch_interface_container_load + 0x1d0, basepointer 0x00007f55ca0a6a10 #3 0x02bad7a3 in netsnmp_access_interface_container_load + 0x23, basepointer 0x00007f55ca0a6a40 #4 0x02bc78a5 in ifTable_container_load + 0x15, basepointer 0x00007f55ca0a6a70 #5 0x02bca290 in netsnmp_cache_check_and_reload + 0x30, basepointer 0x00007f55ca0a6a90 #6 0x02bca538 in netsnmp_cache_helper_handler + 0x1a8, basepointer 0x00007f55ca0a6b00
Local fix
Disable SNMP to avoid further crashes.
Problem summary
**************************************************************** USERS AFFECTED: Users using MQ appliance version MQ 9.1 LTS and/or 9.1.X CD Platforms affected: MultiPlatform **************************************************************** PROBLEM DESCRIPTION: A defect in MQ appliance internal event handling caused a memory exception in the snmp component and this resulted in the appliance reload.
Problem conclusion
MQ Appliance code has been modified to prevent the crash. --------------------------------------------------------------- The fix is targeted for delivery in the following PTFs: Version Maintenance Level v9.1 CD TBC. v9.1 LTS 9.1.0.4 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 number
IT30904
Reported component name
MQ APPLIANCE M2
Reported component ID
5737H4700
Reported release
910
Status
CLOSED PER
PE
NoPE
HIPER
YesHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2019-11-11
Closed date
2020-06-11
Last modified date
2020-06-11
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 APPLIANCE M2
Fixed component ID
5737H4700
Applicable component levels
[{"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Product":{"code":"SS5K6E","label":"IBM MQ Appliance"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"910","Line of Business":{"code":"LOB36","label":"IBM Automation"}}]
Document Information
Modified date:
12 June 2020