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IV78472: A MULTI-THREADED PROCESS MAY HANG WHILE IN PLOCK OR DISCLAIM APPLIES TO AIX 6100-09

A fix is available

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You can track all active APARs for this component.

 

APAR status

  • Closed as program error.

Error description

  • A multi-threaded process might hang when threads belonging to
    the same process are simultaneously executing plock and
    disclaim/mmap system calls.
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:
    * Systems running the 6100-09 Technology Level with
    * bos.mp64 at or above 6.1.9.15 and below 6.1.9.100
    ****************************************************************
    * PROBLEM DESCRIPTION:
    * A multi-threaded process might hang when threads belonging to
    * the same process are simultaneously executing plock and
    * disclaim/mmap system calls.
    ****************************************************************
    * RECOMMENDATION:
    * Install APAR IV78472.
    ****************************************************************
    

Problem conclusion

  • Change the order in which U_handy_lock and U_adspace_lock locks
    are taken.
    

Temporary fix

Comments

  • 6100-09 - use AIX APAR IV78472
    7100-04 - use AIX APAR IV78476
    

APAR Information

  • APAR number

    IV78472

  • Reported component name

    AIX 610 STD EDI

  • Reported component ID

    5765G6200

  • Reported release

    610

  • Status

    CLOSED PER

  • PE

    YesPE

  • HIPER

    NoHIPER

  • Submitted date

    2015-10-29

  • Closed date

    2015-10-29

  • Last modified date

    2016-02-24

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

    IV78456

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

Fix information

  • Fixed component name

    AIX 610 STD EDI

  • Fixed component ID

    5765G6200

Applicable component levels

  • R610 PSY U861403

       UP15/11/22 I 1000

PTF to Fileset Mapping

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Document Information

Modified date:
17 December 2021