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IV64422: ASSERT IN VPM_UNFOLD_CPU(). APPLIES TO AIX 6100-08

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 following stack:
    [00022080]abend_trap+000000 ()
    [002FCFA4]vpm_unfold_cpu+0000A4 ()
    [00082CA0]rsnm_mkxrset+000540 (??, ??)
    [00793004]rsnm_set_named_rset+000224 (??, ??, ??, ??, ??)
    [007936BC]registername+00013C (??, ??, ??, ??, ??, ??)
    [0000386C]ovlya_addr_sc_flih_main+00014C ()
    

Local fix

Problem summary

  • If the system is having 'n' number of logical CPUs.
    Disabling external interrupts on 'm' logical CPUs ( m < n)
    and then creating exclusive rset with n-m CPUs is causing
    system crash.
    

Problem conclusion

  • Creation of exclusive rset code is not taking care of
    external interrupt disabled CPUs during the resource set
    input validation and it should return with invalid value
    as that will cause number of genereal purpose CPUs (gpcpus)
    on LPAR to become '0' with current implementation.
    

Temporary fix

Comments

  • 6100-08 - use AIX APAR IV64422
    6100-09 - use AIX APAR IV62438
    6100-09 - use AIX APAR IV62438
    7100-02 - use AIX APAR IV64241
    7100-03 - use AIX APAR IV62394
    7100-04 - use AIX APAR IV62497
    

APAR Information

  • APAR number

    IV64422

  • Reported component name

    AIX 610 STD EDI

  • Reported component ID

    5765G6200

  • Reported release

    610

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Submitted date

    2014-09-02

  • Closed date

    2014-09-02

  • Last modified date

    2016-05-11

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

    IV60450

  • 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 U867355

       UP15/01/18 I 1000

PTF to Fileset Mapping



Document information

More support for: AIX Standard Edition

Software version: 610

Operating system(s): AIX

Reference #: IV64422

Modified date: 11 May 2016