IBM Support

IV26240: MULTICAST ISSUES WITH CT3 ADAPTER APPLIES TO AIX 6100-08

A fix is available

Subscribe

You can track all active APARs for this component.

 

APAR status

  • Closed as program error.

Error description

  • There are two symptoms.  One is that the multicast
    addresses that have been registered can be "forgotten"
    resulting in packets for those addresses not being passed
    through to the LPAR.  The other symptom is a crash with
    the following stack trace:
    
    pvthread+015000 STACK:
    [04221F64]t3_mac_set_rx_mode+0001E4 (01005E7F18010008,
    01005E7F18010000 [??])
    [0421EAA8]set_rxmode+000028 (??)
    [04241594]multicast_addr+0001D4 (??, ??, ??)
    [0423CBF8]rrhba_mac_modify_libcall+0002B8 (??, ??, ??)
    [042F6B0C]librrhba_mac_modify+00006C (??, ??, ??)
    [04305934]rrent_remove_mcast_addr+000234 (??, ??, ??)
    [0430CE60]rrent_ioctl+000CE0 (??, ??, ??, ??)
    [F1000000C0300B54]disable_address+000194 (??, ??, ??)
    [F1000000C0303CE4]ethchan_ctl+000564 (??, ??, ??, ??)
    [00014D70].hkey_legacy_gate+00004C ()
    [047D435C]en_ioctl+0002DC (??, ??, ??)
    [045B3E88]in_delmulti_source+0001A8 (??, ??)
    [04600E1C]ip_freemoptions+00019C (??)
    [045D9ABC]in_pcbdetach+00055C (??)
    [0463C8A0]udp_usrreq+000680 (??, ??, ??, ??, ??)
    [004BF10C]soclose2+00024C (??, ??)
    [004C0C30]soclose+000010 (??)
    [004CB044]soo_close+000224 (??)
    [006212DC]closef+00005C (??)
    [00540750]closefd+000150 (??, ??)
    [00540B04]closex+000304 (??, ??)
    [00540D7C]close+00011C (??)
    [00003850]ovlya_addr_sc_flih_main+000130 ()
    

Local fix

Problem summary

  • Packet loss due to multicast address corruption
    System crash with below stack
    pvthread+015000 STACK:
     04221F64 t3_mac_set_rx_mode+0001E4 (01005E7F18010008,
    01005E7F18010000  ?? )
     0421EAA8 set_rxmode+000028 (??)
     04241594 multicast_addr+0001D4 (??, ??, ??)
     0423CBF8 rrhba_mac_modify_libcall+0002B8 (??, ??, ??)
     042F6B0C librrhba_mac_modify+00006C (??, ??, ??)
     04305934 rrent_remove_mcast_addr+000234 (??, ??, ??)
     0430CE60 rrent_ioctl+000CE0 (??, ??, ??, ??)
     F1000000C0300B54 disable_address+000194 (??, ??, ??)
     F1000000C0303CE4 ethchan_ctl+000564 (??, ??, ??, ??)
    

Problem conclusion

  • Serilisation is added handle race condition
    

Temporary fix

Comments

APAR Information

  • APAR number

    IV26240

  • Reported component name

    AIX 610 STD EDI

  • Reported component ID

    5765G6200

  • Reported release

    610

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Submitted date

    2012-08-14

  • Closed date

    2012-08-14

  • Last modified date

    2013-04-09

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

    IV22030

  • 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 U841756

       UP13/02/18 I 1000

PTF to Fileset Mapping

[{"Business Unit":{"code":"BU054","label":"Systems w\/TPS"},"Product":{"code":"SSMV87","label":"AIX 6.1 Enterprise Edition"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"610","Edition":"","Line of Business":{"code":"LOB08","label":"Cognitive Systems"}},{"Business Unit":{"code":"BU058","label":"IBM Infrastructure w\/TPS"},"Product":{"code":"SSMVAX","label":"AIX Express Edition"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"610","Edition":"","Line of Business":{"code":"LOB08","label":"Cognitive Systems"}},{"Business Unit":{"code":"BU054","label":"Systems w\/TPS"},"Product":{"code":"SSAUMY","label":"IBM AIX Enterprise Edition"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"610","Edition":"","Line of Business":{"code":"","label":""}},{"Business Unit":{"code":"BU054","label":"Systems w\/TPS"},"Product":{"code":"SG11Q","label":"AIX 6.1 HIPERS, APARs and Fixes"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"610","Edition":"","Line of Business":{"code":"","label":""}}]

Document Information

Modified date:
09 April 2013