On systems with devices.fcp.disk.rte greater than 5.3.0.63, the system may crash with a large stack traceback.
1) AIX 6.1 : High impact/highly pervasive (2008.04.08)
http://www14.software.ibm.com/webapp/set2/subscriptions/pqvcmjd?mode=18&ID=4194#IZ17742
APAR Number: IZ17742
On systems with devices.fcp.disk.rte greater than
5.3.0.63,
the system may crash with a large stack traceback. The
stack traceback may look similar to the following:
# kdb
(2)> f
pvthread+0E5B00 STACK:
[000784D4]xmemdma64_list+000078 (0000000000000000,
F1000100CC565000, 0000000000020000, F1000100472ED608,
0000000000000001, 000000000000000E [??])
[03F31E18]d_map_list_tce+0005F0 (??, ??, ??, ??, ??)
[03FB1EC4]efc_mapdma_iocb+0005BC (??, ??)
[03FB830C]efc_start+0004E4 (??)
[03FB8EC4]efc_output+0004E0 (??, ??)
[03FFD59C]efsc_start+001050 (??, ??)
[04001878]efsc_strategy+00297C (??)
[000EEAE8]std_devstrat+000270 (??)
[000EEE94]devstrat@AF13_6+000058 (??)
[0404F000]scsidisk_start+001AE4 (??)
[04051504]scsidisk_strategy+000578 (??)
[000EEAE8]std_devstrat+000270 (??)
…
…
(2)> dr iar
iar : 00000000000784D4
.xmemdma64_list+000078 stdu stkp,FFFFFE60(stkp)
stkp=F0000000300140D0,FFFFFE60(stkp)=F000000030013F30
The system crashes while manipulating the stack pointer.