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VM66036: PEVM66026 ABENDPRG006 ON SYSTEM ATTACHED ALIAS I/O

A fix is available

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APAR status

  • Closed as program error.

Error description

  • After APAR VM66026 is applied I/O issued to system attached
    HyperPAV / PAV Alias on behalf of a base device may result
    in an ABENDPRG006.
    

Local fix

  • Detach any alias device from the system.
    

Problem summary

  • ****************************************************************
    * USERS AFFECTED: All zVM users of system attached             *
    *                 HyperPAV / PAV Aliases.                      *
    ****************************************************************
    * PROBLEM DESCRIPTION:                                         *
    ****************************************************************
    * RECOMMENDATION: APPLY PTF                                    *
    ****************************************************************
    PEVM66026 ABENDPRG006 can result when I/O is executed on a
    system attached HyperPAV / PAV Alias device on behalf of a
    base device.  This is due to an erroneous exit from the
    I/O scheduler's (HCPIOS) IOSMONSK subroutine because the
    return address value can be overwritten.
    

Problem conclusion

  • PEVM66026 ABENDPRG006 - CP's I/O scheduler's (HCPIOS) subroutine
    IOSMONSK was modified to preserve the return address value
    throughout the routine so that a successful return to mainline
    code can be executed and an ABENDPRG006 can be avoided.
    

Temporary fix

  • *********
    * HIPER *
    *********
    FOR RELEASE VM/ESA CP/ESA R640 :
    PREREQ: VM66026
    CO-REQ: NONE
    IF-REQ: NONE
    

Comments

APAR Information

  • APAR number

    VM66036

  • Reported component name

    VM CP

  • Reported component ID

    568411202

  • Reported release

    640

  • Status

    CLOSED PER

  • PE

    YesPE

  • HIPER

    YesHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2017-06-10

  • Closed date

    2017-06-26

  • Last modified date

    2017-11-24

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

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

    UM35143

Modules/Macros

  • HCPIOS   HCPRDEV
    

Fix information

  • Fixed component name

    VM CP

  • Fixed component ID

    568411202

Applicable component levels

  • R640 PSY UM35143

       UP17/06/26 P 1702 ­

Fix is available

  • Select the PTF appropriate for your component level. You will be required to sign in. Distribution on physical media is not available in all countries.

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Document Information

Modified date:
24 November 2017