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IT36563: TRAP IN SQLERSENDFMPSTART DUE TO SENDBUFFER BEING NULL

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APAR status

  • Closed as program error.

Error description

  • When user mapping plugin is used, customer may hit the NULL
    pointer issue in sqlerSendFmpStart, which will lead to instance
    crash.
    
    The trap file shows Signal #11 (SIGSEGV) in
    _Z17sqlerSendFmpStartP13sqlerFmpParmsP14sqlerFmpHandleP5sqlca +
    0x06cd 	(/var/ibmdb2/nypxt350/sqllib/lib64/libdb2e.so.1)
    
    Callstack:
      [0] 0x00007FFFF075C8C3 pdLog + 0x3E3
      [1] 0x00007FFFF2C335BD sqloPGRPRegisterOneCrash + 0x17D
      [2] 0x00007FFFF2C7B20F sqloEDUCodeTrapHandler + 0x8CF
      [3] 0x00007FFFF79CD7E0 /lib64/libpthread.so.0 + 0xF7E0
      [4] 0x00007FFFF0BF5F0D
    _Z17sqlerSendFmpStartP13sqlerFmpParmsP14sqlerFmpHandleP5sqlca +
    0x6CD
      [5] 0x00007FFFF234DFAC
    _Z27sqlerFedInvokeFencedRoutineP13sqlerFmpParmsP14sqlqg_Fmp_Info
    + 0x11C
      [6] 0x00007FFFF31C9813
    _Z21sqlriFedInvokeInvokerP10sqlri_ufobP14sqlqg_Fmp_Info + 0x1C3
      [7] 0x00007FFFF2E3C6D9
    _Z24sqlqg_invoke_Sec_RequestP17sqlqg_FMP_RequestPP15sqlqg_FMP_Re
    ply + 0xB9
      [8] 0x00007FFFF2E1815F
    _Z24sqlqgGetUserInfoUMPluginPhP14UnfencedServerPP9User_Info +
    0x4EF
      [9] 0x00007FFFF2E18C10
    _Z21sqlqgFindUserUMPluginPhP14UnfencedServerPP19UnfencedRemote_U
    serPb12Sqlqg_OpType + 0x5D0
      [10] 0x00007FFFF2E18F3C
    _Z13sqlqgFindUserPh12Sqlqg_OpTypePP19UnfencedRemote_UserPbjb +
    0x16C
      [11] 0x00007FFFF2DF9D08
    _ZN14UnfencedServer24find_current_remote_userEPP19UnfencedRemote
    _UserPb12Sqlqg_OpType + 0xE8
    ...
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:                                              *
    * ALL                                                          *
    ****************************************************************
    * PROBLEM DESCRIPTION:                                         *
    * See Error Description                                        *
    ****************************************************************
    * RECOMMENDATION:                                              *
    * Upgrade to 11.1.4.7                                          *
    ****************************************************************
    

Problem conclusion

  • Upgrade to 11.1.4.7
    

Temporary fix

Comments

APAR Information

  • APAR number

    IT36563

  • 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

    2021-04-13

  • Closed date

    2022-04-16

  • Last modified date

    2022-04-16

  • APAR is sysrouted FROM one or more of the following:

    IT36559

  • 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":"BU058","label":"IBM Infrastructure w\/TPS"},"Product":{"code":"SSEPGG","label":"DB2 for Linux- UNIX and Windows"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"11.1","Line of Business":{"code":"LOB10","label":"Data and AI"}}]

Document Information

Modified date:
03 May 2022