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IZ80634: MULTI-THREADED PROCESS WRITING TO OWN /PROC/<PID>/AS DEADLOCKS APPLIES TO AIX 6100-06

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

    IZ80634

  • Reported component name

    AIX 610 STD EDI

  • Reported component ID

    5765G6200

  • Reported release

    610

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Submitted date

    2010-07-20

  • Closed date

    2010-07-20

  • Last modified date

    2013-03-28

Fix information

  • Fixed component name

    AIX 610 STD EDI

  • Fixed component ID

    5765G6200

Applicable component levels

  • R610 PSY U833973

       UP11/05/13 I 1000

PTF to Fileset Mapping

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Document Information

Modified date:
28 March 2013