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IT21932: ADDRESS SPACE CONFLICT MAY OCCUR IN DB2GCF IF ASLR IS ENABLED

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You can track all active APARs for this component.

 

APAR status

  • Closed as program error.

Error description

  • The following message may occur in the db2diag.log if ASLR is
    enabled in Linux:
    
    2017-03-22-14.56.51.192796+060 I145511452E1550       LEVEL:
    Severe (OS)
    PID     : 9005                 TID : 140334003136288 PROC :
    db2gcf
    INSTANCE: db2s03               NODE : 000
    HOSTNAME: scmprd
    FUNCTION: DB2 UDB, SQO Memory Management, sqlocshr, probe:210
    MESSAGE : ZRC=0x850F00C4=-2062614332=SQLO_ADDR_CONFLICT
              "An address space conflict was detected attaching to
    shared memory."
    CALLED  : OS, -, shmat                            OSERR: EINVAL
    (22)
    DATA #1 : Memory set handle, PD_TYPE_OSS_MEM_SET_HDL, 48 bytes
    0x00007FFC118F6FB8 : 0000 0000 0200 0000 0000 0000 0200 0000
    ................
    0x00007FFC118F6FC8 : 0000 0000 0000 0000 0000 0000 0000 0000
    ................
    0x00007FFC118F6FD8 : 0000 9309 0000 0000 0900 8E4D 0000 0000
    ...........M....
    DATA #2 : Memory set ID, PD_TYPE_OSS_MEM_SET_ID, 4 bytes
    0x000000020003AFD0 : 7700 F765
    w..e
    DATA #3 : Pointer, 8 bytes
    0x00007fa208bec000
    CALLSTCK: (Static functions may not be resolved correctly, as
    they are resolved to the nearest symbol)
      [0] 0x00007FA20B365E2E sqlocshr + 0x5BE
      [1] 0x00007FA20418B359
    _Z23sqlhaInternalDbmsAttachPA1_13__jmp_buf_tagP18SQLHA_SHMEM_HAN
    DLE + 0xE9
      [2] 0x00007FA20418DCEE
    _Z21sqlhaMonitorPartitionsmP23SQLO_PGRP_FILE_CONTENTS + 0xE8E
      [3] 0x00007FA204171123 gcf_getstate + 0x2463
      [4] 0x00007FA20DB1A4D9
    _ZN9GcfCaller8getStateEP12GCF_PartInfomP11GCF_RetInfo + 0x189
      [5] 0x0000000000403348 main + 0x1158
      [6] 0x00007FA209807C36 __libc_start_main + 0xE6
      [7] 0x0000000000402159 __gxx_personality_v0 + 0xC1
    
    2017-03-22-14.56.51.193542+060 E145513003E670        LEVEL:
    Error
    PID     : 9005                 TID : 140334003136288 PROC :
    db2gcf
    INSTANCE: db2s03               NODE : 000
    HOSTNAME: scmprd
    FUNCTION: DB2 UDB, high avail services, sqlhaInternalDbmsAttach,
    probe:226
    RETCODE : ZRC=0x850F00C4=-2062614332=SQLO_ADDR_CONFLICT
              "An address space conflict was detected attaching to
    shared memory."
    DATA #1 : unsigned integer, 2 bytes
    0
    DATA #2 : Database Partition Number, PD_TYPE_NODE, 2 bytes
    0
    DATA #3 : Database Partition Number, PD_TYPE_NODE, 2 bytes
    0
    DATA #4 : unsigned integer, 2 bytes
    0
    DATA #5 : unsigned integer, 2 bytes
    0
    DATA #6 : Boolean, 1 bytes
    true
    
    This APAR should relax this message.
    

Local fix

  • The message can be ignored.
    

Problem summary

  • ****************************************************************
    * USERS AFFECTED:                                              *
    * All users.                                                   *
    ****************************************************************
    * PROBLEM DESCRIPTION:                                         *
    * See Error Description                                        *
    ****************************************************************
    * RECOMMENDATION:                                              *
    * Update to Db2 11.1 Mod 3 Fixpack 3.                          *
    ****************************************************************
    

Problem conclusion

  • First fixed in Db2 11.1 Mod 3 Fixpack 3.
    

Temporary fix

Comments

APAR Information

  • APAR number

    IT21932

  • 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

    2017-08-09

  • Closed date

    2018-03-19

  • Last modified date

    2018-03-19

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

    IT20192

  • 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:
19 March 2018