IBM Support

IV64724: CIFS_FS INFINITE LOOP IN SMB_RQ_ENQUEUE APPLIES TO AIX 7100-03

A fix is available

Subscribe

You can track all active APARs for this component.

APAR status

  • Closed as program error.

Error description

  • During an unmount, the CIFS driver may enter
    an infinite loop.  The smbiod kernel process
    associated with the share mount will consume
    100% CPU.
    
    The stack trace of the smbiod kernel process
    will always begin as follows. Functions above
    this vary.
    
    nsmbdd:smb_rq_enqueue+000384 (??)
    nsmbdd:smb_rq_simple+000054 (??)
    nsmbdd:smb_smb_ssnclose@AF20_9+0000DC (??, ??, ??, ??)
    nsmbdd:smb_iod_disconnect@AF30_11+0000BC (??, ??, ??)
    nsmbdd:smb_iod_thread+000350 (??, ??, ??)
    

Local fix

Problem summary

  • During an unmount, the CIFS driver may enter
    an infinite loop.  The smbiod kernel process
    associated with the share mount will consume
    100% CPU.
    

Problem conclusion

  • Check for unrecoverable loop conditions & break out.
    

Temporary fix

Comments

  • 6100-09 - use AIX APAR IV64307
    6100-09 - use AIX APAR IV64307
    7100-03 - use AIX APAR IV64724
    

APAR Information

  • APAR number

    IV64724

  • Reported component name

    AIX V7.1

  • Reported component ID

    5765H4000

  • Reported release

    710

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Submitted date

    2014-09-09

  • Closed date

    2014-09-09

  • Last modified date

    2015-05-22

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

    IV64307

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

Fix information

  • Fixed component name

    AIX V7.1

  • Fixed component ID

    5765H4000

Applicable component levels

  • R710 PSY U865720

       UP15/05/19 I 1000

PTF to Fileset Mapping



Document information

More support for: AIX Enterprise Edition

Software version: 710

Operating system(s): AIX

Reference #: IV64724

Modified date: 22 May 2015