A fix is available
APAR status
Closed as program error.
Error description
CAA node crashed dumping a core with the following stack trace: (2)> f pvthread+001600 STACK: [0006E3C4].panic_trap+000000 () [00014E48].kernel_add_gate+000048 () [F1000000C04A9034]dms_trap+000014 () [00014E48].kernel_add_gate+000048 () [000BD0CC]itmr_timeout+00004C () [F1000000C04A8BF4]dms_timeout+0000B4 (??, ??, ??) [F1000000C04A90B4]dms_handler+000034 (??) [00014D70].hkey_legacy_gate+00004C () [032550EC]skey_kmode+000000 () [00254D4C].dec_itmr_check_fixup+000014 () System error log reported KERNEL_PANIC with the panic string "Deadman timer triggered". The syslog.caa log reported the AHAFS event of the ADAPTER_DEL type immediately before the node crash. The crash will occur very soon after detaching with the ifconfig command any interface having no IP address configured and marked with an asterisk in a 'netstat -i' display.
Local fix
There is no workaround to the problem. There is a suggestion to avoid operations that would reproduce the issue.
Problem summary
panic with stack: 0006E3C4 .panic_trap+000000 () 00014E48 .kernel_add_gate+000048 () F1000000C04A9034 dms_trap+000014 () 00014E48 .kernel_add_gate+000048 () 000BD0CC itmr_timeout+00004C () F1000000C04A8BF4 dms_timeout+0000B4 (??, ??, ??) F1000000C04A90B4 dms_handler+000034 (??) 00014D70 .hkey_legacy_gate+00004C () 032550EC skey_kmode+000000 () 00254D4C .dec_itmr_check_fixup+000014 () System error log reported KERNEL_PANIC with the panic string "Deadman timer triggered".
Problem conclusion
Do not set the number of interfaces to zero if just detaching one interface.
Temporary fix
Comments
6100-08 - use AIX APAR IV59384 6100-09 - use AIX APAR IV59532 6100-09 - use AIX APAR IV59532 7100-02 - use AIX APAR IV62004 7100-03 - use AIX APAR IV59761 7100-04 - use AIX APAR IV59683
APAR Information
APAR number
IV59683
Reported component name
AIX V7.1
Reported component ID
5765H4000
Reported release
710
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Submitted date
2014-04-23
Closed date
2014-04-23
Last modified date
2016-05-10
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
002PC0
Fix information
Fixed component name
AIX V7.1
Fixed component ID
5765H4000
Applicable component levels
R710 PSY U861566
UP15/11/22 I 1000
PTF to Fileset Mapping
U861566 bos.cluster.rte 7.1.4.0
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Document Information
Modified date:
10 May 2016