Experimental Physics and
Industrial Control System

Andrew Johnson <[email protected]> · Fri, 8 Jun 2012 12:19:29 -0500

Hi,

On 2012-06-08 Kevin Peterson wrote:
> I'm getting an access fault during iocInit when I load
> iocAdminVxWorks.db from devIocStats:

> My vme is using VxWorks 6.8, base-3.14.12.2, and devIocStats-3-1-7 (from
> synApps_5_6).  The problem also occurs with devIocStats 3.1.9.
> 
> I've used the debugger to trace the fault to the iocInit.c:doRecordPini
> for the record iockmp:DAT_MBUF_MAX.
> 
> The problem doesn't occur with VxWorks 5.5.2.

Has anybody looked at upgrading iocStats for the new network stack in vxWorks 
6.8?  Wind River replaced the network stack code and associated buffer pool 
(again), such that the code in iocStats/devIocStats/os/vxWorks/osdClustInfo.c 
is now wrong; on our vxWorks 6.8 systems both _pNetSysPool and _pNetDpool are 
NULL, so neither devIocStatsGetClusterInfo() nor devIocStatsGetClusterUsage() 
are correct any more.  For some reason the APS Controls IOCs that have loaded 
iocStats have not been crashing when they initialize the record that Kevin 
mentions above, but his IOC (using the same vxWorks OS configuration, but a 
different CPU board) does crash.

- Andrew
-- 
Never interrupt your enemy when he is making a mistake.
-- Napoleon Bonaparte

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System