A fix is available
APAR status
Closed as program error.
Error description
System responds sluggishly or is completely hung. Multiple CPUs show the following stack as they spin on atomic op pvthread+010E00 STACK: Ý0000AF28¨.fetch_and_nop+000008 () Ý000DE37C¨dr_mpc_freeze_handler+0000DC () Ý001EACBC¨drp_mpc_handler+00013C () Ý0030C244¨i_softmod+000584 () Ý00154A14¨flih_util+000260 ()
Local fix
Problem summary
System responds sluggishly or is completely hung. Multiple CPUs show the following stack as they spin on atomic op pvthread+010E00 STACK: 0000AF28 .fetch_and_nop+000008 () 000DE37C dr_mpc_freeze_handler+0000DC () 001EACBC drp_mpc_handler+00013C () 0030C244 i_softmod+000584 () 00154A14 flih_util+000260 ()
Problem conclusion
Perform an unserialized read of the shared word first and then a serialized, atomic read only when the first read indicates a value is present.
Temporary fix
Comments
6100-09 - use AIX APAR IV55958 6100-09 - use AIX APAR IV55958 6100-09 - use AIX APAR IV55958 7100-03 - use AIX APAR IV55974 7100-04 - use AIX APAR IV56109
APAR Information
APAR number
IV55974
Reported component name
AIX V7.1
Reported component ID
5765H4000
Reported release
710
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Submitted date
2014-02-26
Closed date
2014-02-26
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:
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
U858978 bos.mp64 7.1.3.15
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Document Information
Modified date:
10 May 2016