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IV64544: system crash in vmUnmountPagingDevice() during forced unmount APPLIES TO AIX 7100-03

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

  • System can crash with following stack trace while doing
    a force unmount operation on a filesystem:-
    
    CRASH INFORMATION:
    CPU 12 CSA F00000002FF47600 at time of crash, error code
    for LEDs: 70000000
    pvthread+043600 STACK:
    [00312254]vmUnmountPagingDevice+000034 (0000000000000016
    [??])
    [00333D84]umount_fs_forced+000484 (??, ??)
    [00334C78]j2_umount+000178 (??, ??, ??)
    [0067232C]vfs_unmount+00008C (??, ??, ??)
    [0067EC48]kunmount+000228 (??, ??, ??, ??)
    [0067F364]uvmount+000204 (??, ??)
    [00003934]mfspurr_sc_flih01+000170 ()
    [kdb_get_virtual_memory] no real storage @ 2FF21D24
    [10005E48]10005E48 ()
    [kdb_read_mem] no real storage @ FFFFFFFFFFF5C20
    

Local fix

  • Unmounting without force option may avoid this crash.
    

Problem summary

  • System crash with a stack that includes:
     00312254 vmUnmountPagingDevice+000034 ()
     00333D84 umount_fs_forced+000484 ()
     00334C78 j2_umount+000178 ()
     0067232C vfs_unmount+00008C ()
    

Problem conclusion

  • The interface to v_pdtdelete() was modified to allow the
    reinvocation of the criticial section to succeed.
    

Temporary fix

Comments

  • 6100-09 - use AIX APAR IV69237
    7100-03 - use AIX APAR IV64544
    

APAR Information

  • APAR number

    IV64544

  • Reported component name

    AIX V7.1

  • Reported component ID

    5765H4000

  • Reported release

    710

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Submitted date

    2014-09-03

  • Closed date

    2015-02-03

  • Last modified date

    2015-05-22

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

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

    IV69237 IV69239

Fix information

  • Fixed component name

    AIX V7.1

  • Fixed component ID

    5765H4000

Applicable component levels

  • R710 PSY U865837

       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 #: IV64544

Modified date: 22 May 2015