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IT25370: POTENTIAL ACCESS VIOLATION IN BANKUNPACKER GETCODES

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You can track all active APARs for this component.

 

APAR status

  • Closed as fixed if next.

Error description

  • Db2 might attempt to reads up to 7 bytes into data which does
    not belong to Db2, which results in access violation on Windows
    and SIGSEGV on UNIX.
    This is more likely to happen on Windows as bufferpool pages get
    allocated in relative small memory chunks.
    Pre-requisite:
    1-bit encoded data in BLU table need to be in the last bytes of
    a bufferpool page and the bufferpool page needs to be the last
    page in a memory chunk allocated by Db2.
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:                                              *
    * Very rare occurrence. More likely to happen on Windows.      *
    ****************************************************************
    * PROBLEM DESCRIPTION:                                         *
    * See Error Description                                        *
    ****************************************************************
    * RECOMMENDATION:                                              *
    * Upgrade to next fixpack.                                     *
    ****************************************************************
    

Problem conclusion

Temporary fix

Comments

APAR Information

  • APAR number

    IT25370

  • Reported component name

    DB2 FOR LUW

  • Reported component ID

    DB2FORLUW

  • Reported release

    B10

  • Status

    CLOSED FIN

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2018-06-14

  • Closed date

    2018-06-20

  • Last modified date

    2018-06-20

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

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

Fix information

Applicable component levels

  • RB10 PSN

       UP

  • RB10 PSY

       UP

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Document Information

Modified date:
20 June 2018