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PI17124: ABEND0C4 EZBITSTO + X'23FA' RUNNING LUNS ON TELNET. CALLER WAS EZBTDPRM, CALLED BY EZBTMCTM

A fix is available

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APAR status

  • Closed as program error.

Error description

  • ABEND0C4 EZBITSTO + x'23FA' running LUNS on TELNET.
    Caller was EZBTDPRM, called by EZBTMCTM
    TelnetGlobals are being freed on the LUNS in error.
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:                                              *
    * All users of the IBM Communications Server                   *
    * for z/OS Version 2 Release 1 IP: Telnet                      *
    * 3270 Server Shared LU groups                                 *
    ****************************************************************
    * PROBLEM DESCRIPTION:                                         *
    * EZBTMCTM cleared the TelnetGlobals                           *
    * pointer when processing a new LUNR                           *
    * connection.  This caused an abend                            *
    * trying to use the cleared pointer.                           *
    ****************************************************************
    * RECOMMENDATION:                                              *
    * Apply PTF.                                                   *
    ****************************************************************
    The problem may be summmarized as follows:
    1. The Telnet server acting as a LU name server(LUNS) became
    the active LUNS for the sysplex group.
    2. A Telnet with shared LU name groups connected to the LUNS
    as a LU name requester(LUNR).  The LUNR started sending
    in the LU name configuration.
    3. The LUNS received the start of the configuration and
    attempted to free the TelnetGlobals area on thread 1.
    4. A second LUNR connected and sent its profile data on thread
    2.  Thread 2 set the pointer to the TelnetGlobals area to
    zero.
    5. Thread 1 attempted to use the TelnetGlobals pointer to free
    the storage, causing an abend.
    

Problem conclusion

  • Module EZBTMCTM is updated to not attempt to free the
    TelnetGlobals pointer when processing a LUNR profile.
    

Temporary fix

Comments

APAR Information

  • APAR number

    PI17124

  • Reported component name

    TCP/IP V3 MVS

  • Reported component ID

    5655HAL00

  • Reported release

    210

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2014-05-01

  • Closed date

    2014-05-28

  • Last modified date

    2014-07-01

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

    PI15509

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

    UI18410

Modules/Macros

  • EZBTMCTM
    

Fix information

  • Fixed component name

    TCP/IP V3 MVS

  • Fixed component ID

    5655HAL00

Applicable component levels

  • R210 PSY UI18410

       UP14/06/24 P F406

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:
01 July 2014