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IZ91438: VFS ASSERT BECAUSE CIFS VNODE/GNODE FREED WHILE IN USE APPLIES TO AIX 5300-12

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

  • When a file is accessed in a CIFS mount while that file
    system is also being unmounted, AIX can sometimes crash
    with a stack trace similar to this:
    
    [00406F3C]bad_vnode_bad_caller+000000 (F1000100450B4880
    [??])
    [0040C874]vnop_getattr+000118 (??, ??, ??)
    [0044B128]getstat+000020 (??, ??, ??, ??)
    [0044BCA4]fstatx+0000F4 (??, ??, ??, ??)
    [00003810].svc_instr+000110 ()
    

Local fix

  • The workaround is to unmount CIFS file systems as
    infrequently as possible.
    

Problem summary

  • VFS assert because CIFS vnode/gnode freed while in use.
    

Problem conclusion

  • Put in place proper synchronization mechanism to prevent
    any currently used vnode from getting freed.
    

Temporary fix

Comments

  • 5300-10 - use AIX APAR IZ91428
    5300-11 - use AIX APAR IZ84228
    5300-12 - use AIX APAR IZ91438
    6100-03 - use AIX APAR IZ93766
    

APAR Information

  • APAR number

    IZ91438

  • Reported component name

    AIX 5.3

  • Reported component ID

    5765G0300

  • Reported release

    530

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Submitted date

    2010-12-28

  • Closed date

    2010-12-28

  • Last modified date

    2013-04-17

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

    IZ84228

  • 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 U840470

       UP11/02/22 I 1000

PTF to Fileset Mapping

[{"Business Unit":{"code":"BU054","label":"Systems w\/TPS"},"Product":{"code":"SG11P","label":"APARs - AIX 5.3 environment"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"530","Edition":"","Line of Business":{"code":"","label":""}}]

Document Information

Modified date:
17 April 2013