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IV56496: scb_sysbr serialization issue in vm_makeadsp64 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:-
    CRASH INFORMATION:
        CPU 17 CSA F00000002FF47600 at time of crash, error
    code for LEDs:
        30000000
        pvthread+068800 STACK:
        [000250AC]vm_makeadsp64+0000CC (F00000002FF48960,
    0000000000000000,
           F000000020000000, 0000000000000098 [??])
        [00025944]vm_makeme64+000144 (??, ??)
        [004756E8]execvex_common+0025A8 (??, ??, ??, ??, ??)
        [00478BAC]execve+0000A8 ()
        [00003888]mfspurr_sc_flih01+0000E4 ()
        [kdb_get_virtual_memory] no real storage @ 2FF22768
        [1001BC24]1001BC24 ()
        [kdb_read_mem] no real storage @ FFFFFFFFFFF5FF0
    

Local fix

Problem summary

  • System crash in vm_makeadsp64() called from vm_makeme64()
    

Problem conclusion

  • Move the update of scb_sysbr into a critical section.
    

Temporary fix

Comments

  • 6100-07 - use AIX APAR IV58197
    6100-08 - use AIX APAR IV51235
    6100-09 - use AIX APAR IV56459
    6100-09 - use AIX APAR IV56459
    6100-09 - use AIX APAR IV56459
    7100-01 - use AIX APAR IV54696
    7100-02 - use AIX APAR IV54695
    7100-03 - use AIX APAR IV56496
    7100-04 - use AIX APAR IV56501
    

APAR Information

  • APAR number

    IV56496

  • Reported component name

    AIX V7.1

  • Reported component ID

    5765H4000

  • Reported release

    710

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Submitted date

    2014-03-10

  • Closed date

    2014-03-10

  • Last modified date

    2016-05-10

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

    IV51235

  • 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 U858978

       UP14/05/22 I 1000

PTF to Fileset Mapping



Document information

More support for: AIX Enterprise Edition

Software version: 710

Operating system(s): AIX

Reference #: IV56496

Modified date: 10 May 2016