PM84824: LOOP IN EZBTPUSW WHEN PROCESSING A TELNET USS TABLE WITH SYSTEM SYMBOLICS

A fix is available

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APAR status

  • Closed as program error.

Error description

  • If a Telnet USS table is coded such that a system symbolic
    occupies the very last bytes of the table and the symbolic
    is not bounded by an optional delimiter, a loop results in
    module EZBTPUSW.
    

Local fix

  • Do one of the following:
    1) Remove the system symbolic from the end of the USS table.
    2) Add a period as an ending delimiter to the symbol.
    3) Add a blank after the symbol.
    

Problem summary

  • ****************************************************************
    * USERS AFFECTED: All users of the IBM Communications Server   *
    *                 for z/OS Version 1 Release 13 IP: Telnet     *
    *                 services using system symbolics in a USS     *
    *                 message.                                     *
    ****************************************************************
    * PROBLEM DESCRIPTION:   A loop can occur in EZBTPUSW when     *
    *                      processing a USSMSG with system         *
    *                      symbolics in the USSMSG.                *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    The problem may be summarized as follows:
    1. A customer's Telnet USS table (such as EZBTPUST) was coded
       with system symbolics in it such that a system symbolic
       occupied the very last bytes of a USSMSG.
    2. The system symbolic was not followed by the optional ending
       delimiter - a period.
    3. The substituted value for the symbolic name was shorter than
       the symbolic name.
    4. A loop occurred in EZBTPUSW when trying to send this USSMSG.
    +-------------------------------------------------------------+
    + Please check our Communications Server for OS/390 homepages +
    + for common networking tips and fixes.  The URL for these    +
    + homepages can be found in Informational APAR II11334.       +
    +-------------------------------------------------------------+
    

Problem conclusion

  •   EZBTPUSW has been updated to correctly process a USSMSG with
    a system symbolic that occupies the very last bytes of a USSMSG.
    
    * Cross Reference between External and Internal Names
    

Temporary fix

Comments

APAR Information

  • APAR number

    PM84824

  • Reported component name

    TCP/IP V3 MVS

  • Reported component ID

    5655HAL00

  • Reported release

    1D0

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    YesHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2013-03-14

  • Closed date

    2013-04-19

  • Last modified date

    2014-01-20

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

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

    UK93622 PM88076

Modules/Macros

  •    EZBTPUSW
    

Fix information

  • Fixed component name

    TCP/IP V3 MVS

  • Fixed component ID

    5655HAL00

Applicable component levels

  • R1D0 PSY UK93622

       UP13/05/21 P F305

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


More support for:

z/OS family

Software version:

1D0

Operating system(s):

z/OS

Reference #:

PM84824

Modified date:

2014-01-20

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