IV21417: CRASH IN SNA_V5ROUTER64

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You can track all active APARs for this component.

APAR status

  • Closed as program error.

Error description

  • Crash occurs during VRN link activation rejection caused by
    misconfigured DNS.
    

Local fix

  • Correct DNS configuration.
    

Problem summary

  • USERS AFFECTED: All using Enterprise Extender (EE).
    
    PROBLEM DESCRIPTION:
    CRASH INFORMATION:CPU 0 CSA F00000003005F780 at time of
    crash, error code for LEDs:70000000
    pvthread+001700 STACK:
    [047C1E94]sna_v5router64:ncs_check_for_retry+000208
    (F1000100653CA5D8,0100000000000001,F10001002F44E048)
    [047B5218]sna_v5router64:ncs_fsm_ls_ext+0005B0
    (F10001003271AC20,F10001002F44E048)
    [047B2EA8]sna_v5router64:ncs_dlc_to_cs_signals+0001BC
    (F10001003271AC20,F10001002F44E048)
    [047B3B64]sna_v5router64:ncs_queue_handler+0000FC
    (F10001003271AC20,0001000000000001,F10001002F44E048)
    [046A6E70]sna_v5router64:nba_dispatch_input+000290
    (F1000100321A8258,F10001002F44E048)
    [046A755C]sna_v5router64:nba_dispatch_process+0000C8
    (F1000100321A8258,F10001002F44E048)
    [046A7D68]sna_v5router64:nba_scheduler+000210 ()
    [04699F34]sna_v5router64:vpr_stream_lr_svc+0001A8
    (F100020000522000)
    [0411207C]pse:sq_wrapper+00015C (??)
    [040FD358]pse:csq_run+000528 (??)
    [040FC008]pse:csq_lateral+0000BC (??, ??, ??)
    [041129F8]pse:scheduled_run+0000D0 ()
    [001F6070]Netintr+0001A0 ()
    [001F5E8C]netisr_thread+000014 ()
    [0016BD2C]threadentry+000014 (??, ??, ??, ??)
    
    PROBLEM SUMMARY:
    The problem occurs when the following all occur:
    - DNS misconfiguration causes a VRN link activation to
      be rejected (CNCT_OUT RSP ERROR for @Dxxxxxx link in
      the DLC trace)
    - CS then frees internal memory used for this VRN link
    - CS frees memory back to the O/S from its memory cache
      (this does not happen every time)
    - the O/S memory manager clears this memory immediately.
    - CS then tries to access the memory just after it has
      been released.
    

Problem conclusion

  • Code has been corrected to prevent checking the retry logic for
    the dynamic link after it had failed to actviate.
    

Temporary fix

Comments

APAR Information

  • APAR number

    IV21417

  • Reported component name

    CS AIX V6.X

  • Reported component ID

    5765E5100

  • Reported release

    640

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2012-05-17

  • Closed date

    2012-05-17

  • Last modified date

    2012-09-11

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

    IV09118

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

Fix information

  • Fixed component name

    CS AIX V6.X

  • Fixed component ID

    5765E5100

Applicable component levels

  • R640 PSY U851826

       12/09/11 I 1000



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Document information


More support for:

Communications Server for AIX

Software version:

640

Reference #:

IV21417

Modified date:

2012-09-11

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