IBM Support

IT33665: WHEN INTERRUPT HAPPENS, FMP TRAPS DUE TO EMPTY THREAD LIST ACCESS

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APAR status

  • Closed as program error.

Error description

  • When interrupt happens, FMP will compare its thread list IDs
    with to-be interrupted thread ID, before comparison the codes
    should make sure the FMP thread list is not empty (NULL). The
    core file shows that the access to the empty FMP thread list
    causes a trap.
    
    Stack:
    </POFDisassembly>
    <StackTrace>
    -----FUNC-ADDR---- ------FUNCTION + OFFSET------
    0x00007FFFF4588506
    _Z25ossDumpStackTraceInternalmR11OSSTrapFileiP7siginfoPvmm +
    0x0356
      (/home/db2qw11/sqllib/lib64/libdb2osse.so.1)
    0x00007FFFF458814B ossDumpStackTraceV98 + 0x002b
      (/home/db2qw11/sqllib/lib64/libdb2osse.so.1)
    0x00007FFFF4584337 _ZN11OSSTrapFile6dumpExEmiP7siginfoPvm +
    0x00d7
      (/home/db2qw11/sqllib/lib64/libdb2osse.so.1)
    0x00007FFFF5C946F7 sqlo_trce + 0x03c7
      (/home/db2qw11/sqllib/lib64/libdb2.so.1)
    0x00007FFFF5C951FB sqlo_db2fmp_trca_nokill + 0x01eb
      (/home/db2qw11/sqllib/lib64/libdb2.so.1)
    0x0000003954C0F7E0 address: 0x0000003954C0F7E0 ; dladdress:
    0x0000003954C00000 ; offset in lib: 0x000000000000F7E0 ;
      (/lib64/libpthread.so.0)
    0x00007FFFF58D4116 _Z31sqlerInterruptWorkerThreadEntryPv +
    0x00e6
      (/home/db2qw11/sqllib/lib64/libdb2.so.1)
    0x0000003954C07AA1 address: 0x0000003954C07AA1 ; dladdress:
    0x0000003954C00000 ; offset in lib: 0x0000000000007AA1 ;
      (/lib64/libpthread.so.0)
    0x00000039548E8C4D clone + 0x006d
      (/lib64/libc.so.6)
    </StackTrace>
    <ProcessObjects>
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:                                              *
    * all                                                          *
    ****************************************************************
    * PROBLEM DESCRIPTION:                                         *
    * See Error Description                                        *
    ****************************************************************
    * RECOMMENDATION:                                              *
    * Upgrade to Db2 11.1.4.6 or higher                            *
    ****************************************************************
    

Problem conclusion

  • Upgrade to Db2 11.1.4.6 or higher
    

Temporary fix

Comments

APAR Information

  • APAR number

    IT33665

  • 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

    2020-07-23

  • Closed date

    2021-03-31

  • Last modified date

    2021-03-31

  • 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

[{"Line of Business":{"code":"LOB10","label":"Data and AI"},"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Product":{"code":"SSEPGG","label":"Db2 for Linux, UNIX and Windows"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"11.1"}]

Document Information

Modified date:
01 April 2021