A fix is available
APAR status
Closed as program error.
Error description
When using USB cdrom and backing up with heavy IO and if SCSI errors are occurring a crash may occur with the following scsi errors and stack trace: Oct 15 04:08:27 SYSDUMP U DUMP_STATS Oct 15 04:06:59 minidump U MINIDUMP_LOG Oct 15 04:06:59 ABEND P KERNEL_ABEND Oct 15 04:09:44 errdemon T ERRLOG_ON Oct 14 03:32:07 cd0 T DISK_ERR4 Oct 14 03:15:46 cd0 T DISK_ERR4 Oct 12 05:09:30 cd0 P DISK_ERR1 Oct 12 05:08:57 cd0 P DISK_ERR1 Oct 12 05:08:22 cd0 P DISK_ERR1 pvthread+01CB00 STACK: [0001BF00]abend_trap+000000 () [0052BF04]slock+000524 (??, ??) [000090C4].disable_lock+0000C0 () [04E08C64]watchdog_hndlr+000064 (??) [0007D6E8]watchdog+000388 () [000A1594]sys_timer+000154 (??) [000A2274]clock+000334 (??
Local fix
Problem summary
When using USB cdrom and backing up with heavy IO and if SCSI errors are occurring a crash may occur with the following scsi errors and stack trace: Oct 15 04:08:27 SYSDUMP U DUMP_STATS Oct 15 04:06:59 minidump U MINIDUMP_LOG Oct 15 04:06:59 ABEND P KERNEL_ABEND Oct 15 04:09:44 errdemon T ERRLOG_ON Oct 14 03:32:07 cd0 T DISK_ERR4 Oct 14 03:15:46 cd0 T DISK_ERR4 Oct 12 05:09:30 cd0 P DISK_ERR1 Oct 12 05:08:57 cd0 P DISK_ERR1 Oct 12 05:08:22 cd0 P DISK_ERR1 pvthread+01CB00 STACK: 0001BF00 abend_trap+000000 () 0052BF04 slock+000524 (??, ??) 000090C4 .disable_lock+0000C0 () 04E08C64 watchdog_hndlr+000064 (??) 0007D6E8 watchdog+000388 () 000A1594 sys_timer+000154 (??) 000A2274 clock+000334 (??
Problem conclusion
Schedule the watchdog handler as a offlevel handler
Temporary fix
Comments
5300-10 - use AIX APAR IZ90962 5300-11 - use AIX APAR IZ90775 5300-12 - use AIX APAR IZ90834 6100-06 - use AIX APAR IZ89476 7100-00 - use AIX APAR IZ89893
APAR Information
APAR number
IZ90962
Reported component name
AIX 5.3
Reported component ID
5765G0300
Reported release
530
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Submitted date
2010-12-14
Closed date
2010-12-14
Last modified date
2013-02-27
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 U840552
UP11/02/23 I 1000
PTF to Fileset Mapping
U840552 devices.usbif.08025002.rte 5.3.10.4
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Document Information
Modified date:
27 February 2013