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IT25519: db2instance & db2haicu might fail with a SEGV in sqlhaGetInfoForClusterObject if route or IPv4 IP is not assigned to NIC

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You can track all active APARs for this component.

 

APAR status

  • Closed as program error.

Error description

  • Db2 tools accessing network interface (NIC) information,
    db2haicu and db2instance, might fail with a segmentation fault
    (memory fault/SEGV), if:
    - there is a NIC, which doesn't have an IPv4 address assigned
    or:
    - there is no routes associated with one of the interfaces
    
    For db2haicu, tool will fail on network configuration stage
    (e.g. network tiebreaker setup), for db2instance, "db2instance
    -list" will be affected.
    If system is configured to dump a core (ulimit -c unlimited),
    the core dump will show the following functions on the top of
    the stack:
    db2haicu:
    sqlhaGetInfoForClusterObject
    sqlhaUIListAllNICsInClus
    
    db2instance:
    sqlhaGetInfoForClusterObject
    sqlhaCheckNetworkAdapterOnHost
    
    Db2 V11.1 Mod3 Fix Pack 3 and both iFix001 and iFix002 are the
    only V11.1 Fix Packs affected.
    

Local fix

  • Assign IPv4 address or associate a route to each NIC
    

Problem summary

  • ****************************************************************
    * USERS AFFECTED:                                              *
    * PureScale and TSA-controlled environments                    *
    ****************************************************************
    * PROBLEM DESCRIPTION:                                         *
    * See Error Description                                        *
    ****************************************************************
    * RECOMMENDATION:                                              *
    * Upgrade to DB2 version 11.1 Mod 4 Fix Pack 4 or higher.      *
    ****************************************************************
    

Problem conclusion

  • Problem first fixed in DB2 version 11.1 Mod 4 Fix Pack 4.
    

Temporary fix

Comments

APAR Information

  • APAR number

    IT25519

  • Reported component name

    DB2 FOR LUW

  • Reported component ID

    DB2FORLUW

  • Reported release

    B10

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2018-06-28

  • Closed date

    2019-01-07

  • Last modified date

    2019-01-07

  • 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

    DB2 FOR LUW

  • Fixed component ID

    DB2FORLUW

Applicable component levels

  • RB10 PSN

       UP

[{"Business Unit":{"code":"BU048","label":"IBM Software"},"Product":{"code":"SSEPGG","label":"DB2 for Linux, UNIX and Windows"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"11.1","Edition":"","Line of Business":{"code":"LOB10","label":"Data and AI"}}]

Document Information

Modified date:
07 January 2019