A fix is available
APAR status
Closed as program error.
Error description
System crash when a SAN event occurs for a fscsi device that is closing. The stack trace will look like this: (3)> f pvthread+001700 STACK: [040072C8]efsc_event_buf_update+0000B4 (..) [0402C5D0]efsc_async_stat_135_34+000F74 (??, ??, ??, ??, ??) [03FB130C]efc_async_status+000170 (??, ??, ??, ??, ??) [03FAAA54]efc_process_mbatt+000E40 (??) [03FB1804]efc_intr+000470 (??) [000EFD6C]i_poll_soft+000184 (??) [000EF85C]i_softmod+000358 () [00178878].finish_interrupt+000024 () The device in question will be in a CLOSED state.
Local fix
None. This is a very small timing window.
Problem summary
System crash with stack similar to: pvthread+001700 STACK: 040072C8 efsc_event_buf_update+0000B4 (..) 0402C5D0 efsc_async_stat_135_34+000F74 (??, ??, ??, ??, ??) 03FB130C efc_async_status+000170 (??, ??, ??, ??, ??) 03FAAA54 efc_process_mbatt+000E40 (??) 03FB1804 efc_intr+000470 (??) 000EFD6C i_poll_soft+000184 (??) 000EF85C i_softmod+000358 () 00178878 .finish_interrupt+000024 () This happens when the device is being closed.
Problem conclusion
Protocol driver code modified so that when device is in the state of being closed, no update happens. This prevents access of freed memory and hence no crash.
Temporary fix
Comments
5300-09 - use AIX APAR IZ82351 5300-10 - use AIX APAR IZ77570 5300-11 - use AIX APAR IZ82155 5300-12 - use AIX APAR IZ81700 6100-02 - use AIX APAR IZ84109 6100-03 - use AIX APAR IZ83830 6100-04 - use AIX APAR IZ83873 6100-05 - use AIX APAR IZ83982 6100-06 - use AIX APAR IZ81082 6100-06 - use AIX APAR IZ80845 6100-06 - use AIX APAR IZ81082 7100-00 - use AIX APAR IZ82066
APAR Information
APAR number
IZ82155
Reported component name
AIX 5.3
Reported component ID
5765G0300
Reported release
530
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Submitted date
2010-08-09
Closed date
2010-08-09
Last modified date
2013-03-28
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 5.3
Fixed component ID
5765G0300
Applicable component levels
R530 PSY U837679
UP10/09/20 I 1000
PTF to Fileset Mapping
U837679 devices.pci.df1000f7.com 5.3.11.5
[{"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:
28 March 2013