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IZ94054: U_PN_SEGNO DOES NOT GET DELETED BY KEXITX() APPLIES TO AIX 6100-03

A fix is available

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APAR status

  • Closed as program error.

Error description

  • Segments created by the checkpoint/restart support framework of
    the filesystems is not deleted even after the process that
    was checkpointed exits. This is difficult to detect as there
    is no visible symptom such as crash or hang.
    
    The memory leaked by these segments is usually small (a couple
    of real page-frames). Therefore this may be visible as a
    memory leak only if a very large number of processes were
    checkpointed and then exited as zombies before being
    restarted.
    

Local fix

Problem summary

  • Segments created by the checkpoint/restart support framework of
    the filesystems is not deleted even after the process that
    was checkpointed exits. This is difficult to detect as there
    is no visible symptom such as crash or hang.
    
    The memory leaked by these segments is usually small (a couple
    of real page-frames). Therefore this may be visible as a
    memory leak only if a very large number of processes were
    checkpointed and then exited as zombies before being
    restarted.
    

Problem conclusion

  • Process exit path now deletes the checkpoint/restart segments
    for the filesystems when a process transitions to the zombie
    state. Affect bos.mp64.
    

Temporary fix

Comments

APAR Information

  • APAR number

    IZ94054

  • Reported component name

    AIX 610 STD EDI

  • Reported component ID

    5765G6200

  • Reported release

    610

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Submitted date

    2011-01-31

  • Closed date

    2011-01-31

  • Last modified date

    2013-03-24

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

    IZ88154

  • 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 U840511

       UP11/03/22 I 1000

PTF to Fileset Mapping

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Document Information

Modified date:
24 March 2013