Experimental Physics and
Industrial Control System

Nick Rees <[email protected]> · Wed, 22 Apr 1998 16:39:22 -1000 (HST)

I believe I am the first to run R3.13.0.beta11 on MIPS Baja architecture. 
This is quite a fast CPU so what I report may be a race condition.

I have a problem which usually occurs every second time I run up a CA
client. The CA Client task crashes with the following message:

Address store Exception
Exception Program Counter: 0x80f0ade4
Status Register: 0x30006701
Cause Register: 0x00000014
Access Address : 0x80d13834
Task: 0x80cd3160 "CA client"
task: 0X80d8fa20 taskwd
task 80cd3160 CA client suspended

A task trace gives:

-> tt 0x80cd3160 
80f145a8 write_notify_reply+d88: db_get_field (80feeb00, 800c8b20, 80d137c4, 0)
value = 0 = 0x0

I emphasise this is every second CA client. If I run up 10 dm displays I
get this error on displays 2, 4, 6, 8 and 10. They are, of course, errors
on the target. An example of what end up with is: 

CA client camsgtask 80cc4760 180 SUSPEND 80f0ade4 80cc3dd8 0 0 
CA client camsgtask 80cc8780 180 PEND    80019914 80cc85b8 0 0
CA client camsgtask 80ccc7a0 180 SUSPEND 80f0ade4 80ccbe18 0 0
CA client camsgtask 80cd07c0 180 PEND    80019914 80cd05f8 0 0
CA client camsgtask 80ffae20 180 PEND    80019914 80ffac58 0 0
CA client camsgtask 80cd3160 180 SUSPEND 80f0ade4 80cd27d8 0 0

Currently, I am just looking for anyone who has seen something like this
before, so it may save me some time before I get too involved.

Cheers,

Nick Rees

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System