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IV04303: NMENTDD CAUSES SYSDUMP FREEING AN MBUF THAT IS STILL IN CHAIN APPLIES TO AIX 5300-12

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 crashed with the following stack:
    
    (12)> f
    pvthread+002600 STACK:
    [04302E64]nment_rx_handler+000204 (DEADBEEFDEADBEEF [??])
    [0430C690]nment_slih+000550 (??)
    [00243A4C]i_poll_soft+00012C (??)
    [002433C0]i_softmod+000480 ()
    [0013FEC4]flih_util+000250 ()
    

Local fix

Problem summary

  • System may crash with following stack while using already
    freed mbuf:
    (12)> f
    pvthread+002600 STACK:
     04302E64 nment_rx_handler+000204 (DEADBEEFDEADBEEF  ?? )
     0430C690 nment_slih+000550 (??)
     00243A4C i_poll_soft+00012C (??)
     002433C0 i_softmod+000480 ()
     0013FEC4 flih_util+000250 ()
    

Problem conclusion

  • Drop the packet if no mbuf is available from the pools.
    

Temporary fix

Comments

  • 5300-11 - use AIX APAR IV04456
    5300-12 - use AIX APAR IV04303
    6100-04 - use AIX APAR IV05674
    6100-05 - use AIX APAR IV05268
    6100-06 - use AIX APAR IZ97321
    7100-00 - use AIX APAR IV23944
    

APAR Information

  • APAR number

    IV04303

  • Reported component name

    AIX 5.3

  • Reported component ID

    5765G0300

  • Reported release

    530

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Submitted date

    2011-08-03

  • Closed date

    2011-08-03

  • Last modified date

    2013-04-07

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

    IV01296

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

Fix information

  • Fixed component name

    AIX 5.3

  • Fixed component ID

    5765G0300

Applicable component levels

  • R530 PSY U844685

       UP11/10/10 I 1000

PTF to Fileset Mapping

[{"Business Unit":{"code":"BU054","label":"Systems w\/TPS"},"Product":{"code":"SG11P","label":"APARs - AIX 5.3 environment"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"530","Edition":"","Line of Business":{"code":"","label":""}}]

Document Information

Modified date:
07 April 2013