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

Obtain the fix for this APAR.

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 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.