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IV71321: SYSTEM CRASH WHEN REMOVING A CPU 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 crash with the following stack trace:
    ■00466BE0rm_smt_sibling+000300 (0000000000000000 ■??)
    ■001E98F0rmcpu_doit+000A50 (??, ??)
    ■006B43E4dr_callout+000084 (??, ??, ??)
    ■006B38DCkernel_notify+0000BC (??, ??)
    ■006B5A3C_dr_notify+00039C (??, ??, ??, ??)
    ■00003948syscall+000240 ()
    ■10006398remove_a_cpu+0006F8 ()
    ■10008030dlpar_remove+000070 ()
    ■100006F0main+000310 (??, ??)
    ■10000168__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

  • 7100-03 - use AIX APAR IV71321
    

APAR Information

  • APAR number

    IV71321

  • Reported component name

    AIX V7.1

  • Reported component ID

    5765H4000

  • Reported release

    710

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Submitted date

    2015-03-23

  • Closed date

    2015-03-23

  • 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:

    IV71693

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 #: IV71321

Modified date: 22 May 2015