IBM Support

IV56709: CIFS_FS HANGS IN NBSSN_RECV WITH CTRL-Z APPLIES TO AIX 6100-09

A fix is available

Subscribe

You can track all active APARs for this component.

APAR status

  • Closed as program error.

Error description

  • The CIFS driver may hang in nbssn_recv when a
    process accessing files on a CIFS file system
    is stopped with Ctrl-Z.  The stack trace will
    be similar to this.
    
    [000C666C]stop_thread@AF38_8+00016C (00000000000D92F0,
    8000000000001032,
       0000000082222084, F00000002FF46550 [??])
    [000DB250]check_sig+000450 (??, ??)
    [000D9204]e_block_thread+0001A4 ()
    [0048EC70]sosbwait+000350 (??, ??)
    [004E7B1C]soereceive+00191C (??, ??, ??, ??, ??, ??, ??)
    [005077D0]soreceive+000010 (??, ??, ??, ??, ??, ??)
    [00014F50].kernel_add_gate_cstack+000030 ()
    [F1000000C038F6C4]nbssn_recv+0001E4 (??, ??, ??, ??, ??,
    ??)
    [F1000000C0390004]smb_nbst_recv@AF33_6+000024 (??, ??,
    ??, ??, ??)
    [F1000000C03861B8]smb_iod_recvall+000338 (??, ??)
    [F1000000C03875B4]smb_iod_waitrq+000074 (??)
    [F1000000C0384FFC]smb_rq_reply+00001C (??)
    [F1000000C03857EC]smb_rq_simple+00006C (??)
    [F1000000C0388CB0]smb_read+000210 (??, ??, ??, ??)
    [F1000000C037C72C]smbfs_readvnode+00010C (??, ??, ??)
    [F1000000C0379F38]cn_rdwr+0001D8 (??, ??, ??, ??, ??, ??,
    ??, ??)
    

Local fix

  • Resume the stopped process.
    

Problem summary

  • Applications accessing CIFS may appear to have hung when
    another application accessing CIFS filesystem is stopped with
    Ctrl+Z
    

Problem conclusion

  • Ignore signals in functions calling e_block_thread.
    

Temporary fix

Comments

  • 6100-08 - use AIX APAR IV58063
    6100-09 - use AIX APAR IV56709
    6100-09 - use AIX APAR IV56709
    6100-09 - use AIX APAR IV56709
    7100-02 - use AIX APAR IV57396
    7100-03 - use AIX APAR IV56713
    7100-04 - use AIX APAR IV56695
    

APAR Information

  • APAR number

    IV56709

  • Reported component name

    AIX 610 STD EDI

  • Reported component ID

    5765G6200

  • Reported release

    610

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Submitted date

    2014-03-14

  • Closed date

    2014-03-14

  • Last modified date

    2016-05-10

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

    IV55169

  • 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 U861145

       UP14/10/28 I 1000

PTF to Fileset Mapping



Document information

More support for: AIX Standard Edition

Software version: 610

Operating system(s): AIX

Reference #: IV56709

Modified date: 10 May 2016