BCS - VIOS - fix pack 11.1 is necessary

["Steve Richter" <stephenrichter@xxxxxxxxx>]

the AIX system crash analyzer person tells me that VIOS 1.5.2.1, fix
pack 11.1 is needed to prevent the problems I have been having when
activating an IBM i partition on the JS12 blade.

http://www14.software.ibm.com/webapp/set2/sas/f/vios/download/fixpack.html

all speculation on my part as to what caused the crash, but it looks
like something entirely in AIX, and not IBM i accessing VIOS
incorrectly.


CRASH INFORMATION:
CPU 0 CSA F00000002FF47600 at time of crash, error code for LEDs: 30000000
pvthread+004200 STACK:
[0432702C]vscsi_host:emul_atapi_passthru+0000D8 (0002805E2FF465F0,
FFFFFFFFFFFFFFFF [??])
[04328F30]vscsi_host:emul_issue_passthru+000160 (??)
[04328708]vscsi_host:emul_issue_mode_sense+000154 (??, ??, ??, ??, ??, ??)
[0435D9AC]vscsi_host:opt_init_lun+0007E4 (??, ??, ??)
[0433D354]vscsi_host:target_add_child+000320 (??, ??)
[04320EF0]vscsi_host:target_ioctl+000480 (??, ??, ??, ??, ??, ??)
[003ED340]rdevioctl+0000C8 (??, ??, ??, ??, ??, ??)
[004C2B9C]spec_ioctl+000078 (??, ??, ??, ??, ??, ??)
[004028F4]vnop_ioctl+000064 (??, ??, ??, ??, ??, ??)
[004449E8]vno_ioctl+000084 (??, ??, ??, ??, ??)
[0045B9F8]common_ioctl+0000C0 (??, ??, ??, ??)
[00003810].svc_instr+000110 ()
[kdb_get_memory] no real storage @ 2FF22910
(0)> status
CPU     TID  TSLOT     PID  PSLOT  PROC_NAME
 0    420DF     66   240A2     36  cfg_vt_optical
 1    10021     16    D01A     13  wait
 2    11023     17    E01C     14  wait
 3    12025     18    F01E     15  wait
 4-63   Disabled
(0)> vmlog
Most recent VMM errorlog entry
Error id               =  DSI_PROC
Exception DSISR/ISISR  =  0000000040000000
Exception srval        =  00007FFFFFFFD080
Exception virt addr    =  0002805E2FF465F0
Exception value        =  0000000E  EXCEPT_ERRNO

(0)> lke 0432702C
   ADDRESS  FILE     FILESIZE FLAGS    MODULE NAME

 1 042E0F00 0431F000 00050A78 00080252 /usr/lib/drivers/vscsi_host
CMVC Defect 661781

IZ25182
    devices.usbif.08025002.rte 5.3.8.2
    System crash in emul_atapi_passthru
PROBLEM SUMMARY:
It may cause the machine to hang or to crash with a DSI.
For a crash the stack will look similar to this:
Data Storage Interrupt - PROC
0438E02C        lbz    r0,0(r3)            r0=0000000004...
KDB(0)> f
pvthread+002700 STACK:
 0438E02C emul_atapi_passthru+0000D8 (0002805E2FF465F0, ...
 0438FF30 emul_issue_passthru+000160 (??)
 0438F708 emul_issue_mode_sense+000154 (??, ??, ??, ??, ...
 043C49AC opt_init_lun+0007E4 (??, ??, ??)
...

PROBLEM CONCLUSION:
Clear working variables after command retries have been
used up.  Test for and avoid conditions that can lead to
a hang.

found in  5300-08-03-0831 <---------------------------