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IV71693: SYSTEM CRASH WHEN REMOVING A CPU APPLIES TO AIX 7100-04

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 crash with the following stack trace:
    Ý00466BE0¨rm_smt_sibling+000300 (0000000000000000 Ý??¨)
    Ý001E98F0¨rmcpu_doit+000A50 (??, ??)
    Ý006B43E4¨dr_callout+000084 (??, ??, ??)
    Ý006B38DC¨kernel_notify+0000BC (??, ??)
    Ý006B5A3C¨_dr_notify+00039C (??, ??, ??, ??)
    Ý00003948¨syscall+000240 ()
    Ý10006398¨remove_a_cpu+0006F8 ()
    Ý10008030¨dlpar_remove+000070 ()
    Ý100006F0¨main+000310 (??, ??)
    Ý10000168¨__start+000068 ()
    

Local fix

Problem summary

  • system crash with the following stack trace:
     00466BE0 rm_smt_sibling+000300 (0000000000000000  ?? )
     001E98F0 rmcpu_doit+000A50 (??, ??)
     006B43E4 dr_callout+000084 (??, ??, ??)
     006B38DC kernel_notify+0000BC (??, ??)
     006B5A3C _dr_notify+00039C (??, ??, ??, ??)
     00003948 syscall+000240 ()
     10006398 remove_a_cpu+0006F8 ()
     10008030 dlpar_remove+000070 ()
     100006F0 main+000310 (??, ??)
     10000168 __start+000068 ()
    

Problem conclusion

  • handle out of order removes in rm_smt_sibling() and validate
    SMT thread designation in add_smt_sibling()
    

Temporary fix

Comments

APAR Information

  • APAR number

    IV71693

  • Reported component name

    AIX V7.1

  • Reported component ID

    5765H4000

  • Reported release

    710

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Submitted date

    2015-03-30

  • Closed date

    2015-03-30

  • Last modified date

    2016-05-11

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

    IV71321

  • 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 U863867

       UP15/11/22 I 1000

PTF to Fileset Mapping

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Document Information

Modified date:
11 May 2016