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PM29587: Reference count issue between MVFS mnode and NFS vnode causes a panic on release of an mnode with a bad vnode reference

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APAR status

  • Closed as unreproducible in next release.

Error description

  • Reference count issue between MVFS mnode and NFS vnode causes a
    panic on release of an mnode with a bad vnode reference
    
    
    ClearCase 7.0.1.9
    
    AIX 6.1TL3
    
    Backtrace:
    CRASH INFORMATION:
    CPU 13 CSA F00000002FF47600 at time of crash, error code for
    LEDs:
    70000000
    pvthread+01FE00 STACK:
    [04FE38AC]nfs.ext:nfs_check_close_for_dio_cio@AF123_76+00008C
    (0000000000000000, 0000000004000001 [??])
    [05099454]nfs.ext:nfs3_close+000214 (??, ??, ??, ??, ??, ??)
    [04FD335C]nfs.ext:aix2onc_close+00007C (??, ??, ??, ??)
    [004BDBD4]vnop_close+000094 (??, ??, ??, ??)
    [052C60E4]mvfs.o:mfs_aix_vnop_close+000040 (F100011030754838,
    0400000104000001,
     0000000100000001, 0000000000000000, F100011022CE1C7C)
    [052D8168]mvfs.o:mvfs_closev_ctx+000210 (F100010069D283D0,
    0400000104000001,
     0000000100000001, 0000000000000000, F100011022CE1C7C,
    0000000000000000)
    [052D6E20]mvfs.o:mfs_closev+000048 (F100010069D283D0,
    0400000104000001
     0000000100000001, 0000000000000000, F100011022CE1C7C)
    [052C3C58]mvfs.o:mfs_aix_close+000034 (F100010069D283D0,
    0000000004000001,
     0000000000000000, F100011022CE1C7C)
    [004BDBD4]vnop_close+000094 (??, ??, ??, ??)
    [005267D0]vno_close+000050 (??)
    [0053FF44]closef+000064 (??)
    [004A0E98]closefd+0000F8 (??, ??)
    [004A12AC]closex+0002AC (??, ??)
    [004A159C]close+00011C (??)
    [00003844].svc_instr+000144 ()
    
    Workaround:  None
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:                                              *
    ****************************************************************
    * PROBLEM DESCRIPTION:                                         *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    Reference count issue between MVFS mnode and NFS vnode causes a
    panic on release of an mnode with a bad vnode reference.
    

Problem conclusion

Temporary fix

Comments

APAR Information

  • APAR number

    PM29587

  • Reported component name

    CLEARCASE UNIX

  • Reported component ID

    5724G2901

  • Reported release

    701

  • Status

    CLOSED UR1

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2010-12-27

  • Closed date

    2012-04-11

  • Last modified date

    2012-04-11

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

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

Fix information

  • Fixed component name

    CLEARCASE UNIX

  • Fixed component ID

    5724G2901

Applicable component levels

  • R712 PSY

       UP

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Document Information

Modified date:
11 April 2012