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IV93885: PROBLEMS CAN OCCUR WITH THREAD_CPUTIME AND THREAD_CPUTIME_FAST APPLIES TO AIX 7200-01 17/04/14 PTF PECHANGE

A fix is available

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You can track all active APARs for this component.

 

APAR status

  • Closed as program error.

Error description

  • ****************************************************************
    * USERS AFFECTED:
    * Systems running the AIX 7200-01 Technology Level
    * with bos.mp64 between and including the 7.2.1.0 and 7.2.1.2
    * levels.
    ****************************************************************
    * ERROR DESCRIPTION:
    * In the latest AIX Service Packs, using the thread_cputime or
    * thread_cputime_fast interfaces can cause
    * invalid data in the floating point and vector registers.
    *
    * This has been primarily seen to affect Oracle 11gR2 (11.2.0.3
    * and 11.2.0.4), which use this interface.
    * Multiple errors have been seen in these Oracle 11gR2 releases
    * as a result of this issue, including:
    * - ORA 600 errors
    * - oracle process core dump
    * - errors in redo logs and check sum errors in other blocks
    ****************************************************************
    * RECOMMENDATION:
    * Install APAR IV93885.
    * Prior to fix availability, an interim fix is available from
    * either
    * ftp://aix.software.ibm.com/aix/ifixes/iv93885/
    * https://aix.software.ibm.com/aix/ifixes/iv93885/
    * The ifix can be installed using Live Update (LU).
    * If LU is not used, installation of the ifix requires a
    * reboot.
    ****************************************************************
    

Local fix

Problem summary

  • The thread_cputime or thread_cputime_fast interfaces can
    cause invalid data in the FP/VMX/VSX registers if the thread
    page faults in this function.
    

Problem conclusion

  • Remove potential for page fault.
    

Temporary fix

  • *********
      * HIPER *
      *********
    

Comments

APAR Information

  • APAR number

    IV93885

  • Reported component name

    AIX V7.2

  • Reported component ID

    5765CD200

  • Reported release

    720

  • Status

    CLOSED PER

  • PE

    YesPE

  • HIPER

    YesHIPER

  • Submitted date

    2017-03-02

  • Closed date

    2017-03-02

  • Last modified date

    2017-04-14

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

    IV93763

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

    U876458

Fix information

  • Fixed component name

    AIX V7.2

  • Fixed component ID

    5765CD200

Applicable component levels

  • R720 PSY U876458

       UP17/04/14 I 1000 «

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Document Information

Modified date:
14 April 2017