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IZ90643: MULTI-THREADED PROCESS WRITING TO OWN /PROC/<PID>/AS DEADLOCKS APPLIES TO AIX 5300-11

A fix is available

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APAR status

  • Closed as program error.

Error description

  • A multi-threaded process that calls dlopen/load/dlclose/unload
    in one thread while opening its own /proc/<pid>/as file with
    write permission in another thread can deadlock the process
    and hang the system.
    

Local fix

Problem summary

  • A multi-threaded process that calls dlopen/load/dlclose/unload
    in one thread while opening its own /proc/<pid>/as file with
    write permission in another thread can deadlock the process
    and hang the system.
    

Problem conclusion

  • Fix locking code for a thread opening its own /proc/<pid>/as
    file.
    

Temporary fix

Comments

APAR Information

  • APAR number

    IZ90643

  • Reported component name

    AIX 5.3

  • Reported component ID

    5765G0300

  • Reported release

    530

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Submitted date

    2010-12-13

  • Closed date

    2010-12-13

  • Last modified date

    2013-03-28

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

    IZ80634

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

Fix information

  • Fixed component name

    AIX 5.3

  • Fixed component ID

    5765G0300

Applicable component levels

  • R530 PSY U841917

       UP11/02/22 I 1000

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Document Information

Modified date:
28 March 2013