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IV66228: ENABLING 'TCP_FASTLO' OPTION COULD LEAD TO MEMORY LEAKAPPLIES TO APPLIES TO AIX 7100-03 15/06/01 PTF PECHANGE

A fix is available

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APAR status

  • Closed as program error.

Error description

  • ***************************************************************
    * USERS AFFECTED:
    * Systems running the AIX 7100-03 Technology Level
    * with bos.net.tcp.client below the 7.1.3.45 level.
    ***************************************************************
    * PROBLEM DESCRIPTION:
    *     When the 'no' option 'tcp_fastlo' is set and the
    *     communication
    *     between the local sockets fails (loopback), there is a
    *     possibility
    *     of memory leak.  This eventually leads to performance
    *     degradation
    *     or hang.
    ***************************************************************
    * RECOMMENDATION:
    * Install APAR IV66228.
    * Prior to fix availability, an interim fix is available from
    * either
    * ftp://aix.software.ibm.com/aix/ifixes/iv66228/
    * https://aix.software.ibm.com/aix/ifixes/iv66228/
    * Installation of the ifix requires a reboot.
    ***************************************************************
    

Local fix

Problem summary

  • ***************************************************************
    * USERS AFFECTED:
    * Systems running the AIX 7100-03 Technology Level
    * with bos.net.tcp.client below the 7.1.3.45 level.
    ***************************************************************
    * PROBLEM DESCRIPTION:
    *     When the 'no' option 'tcp_fastlo' is set and the
    *     communication
    *     between the local sockets fails (loopback), there is a
    *     possibility
    *     of memory leak.  This eventually leads to performance
    *     degradation
    *     or hang.
    ***************************************************************
    * RECOMMENDATION:
    * Install APAR IV66228.
    * Prior to fix availability, an interim fix is available from
    * either
    * ftp://aix.software.ibm.com/aix/ifixes/iv66228/
    * https://aix.software.ibm.com/aix/ifixes/iv66228/
    * Installation of the ifix requires a reboot.
    ***************************************************************
    

Problem conclusion

  • Changed code to free memory if no root to host is found.
    

Temporary fix

Comments

  • 6100-09 - use AIX APAR IV67463
    7100-03 - use AIX APAR IV66228
    

APAR Information

  • APAR number

    IV66228

  • Reported component name

    AIX V7.1

  • Reported component ID

    5765H4000

  • Reported release

    710

  • Status

    CLOSED PER

  • PE

    YesPE

  • HIPER

    NoHIPER

  • Submitted date

    2014-10-23

  • Closed date

    2014-11-28

  • Last modified date

    2015-11-16

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

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

    IV67443 IV67463

Fix information

  • Fixed component name

    AIX V7.1

  • Fixed component ID

    5765H4000

Applicable component levels

  • R710 PSY U865834

       UP15/05/19 I 1000

PTF to Fileset Mapping



Document information

More support for: AIX Enterprise Edition

Software version: 710

Operating system(s): AIX

Reference #: IV66228

Modified date: 16 November 2015