We are running 2.6.31 on a custom embedded board (based on the AVR32 chip).

It has flash, sdram and fram all connected via an external bus.

We have found that under heavy external bus load, the target appears to lockup (i.e. network
timeouts, ssh sessions dropped, userspace tasks halt, etc).

Having inspected the board out with an oscilloscope, I can see that the sdram bus is still active
doing tight read / write cycles.

As part of the diagnosis, I have checked /var/log/messages, and found the following entries which
I've never seen before:-

Oct  6 19:21:06 mimc200 lpr.err kernel: hars
Oct  6 19:24:57 mimc200 lpr.err kernel: hars
Oct  6 19:26:54 mimc200 lpr.err kernel: hars
Oct  6 19:27:14 mimc200 lpr.err kernel: hars
Oct  6 19:27:55 mimc200 lpr.err kernel: hars
Oct  6 19:27:58 mimc200 lpr.err kernel: hars
Oct  6 19:28:09 mimc200 lpr.err kernel: hars
Oct  6 19:28:39 mimc200 lpr.err kernel: hars
Oct  6 19:29:08 mimc200 lpr.err kernel: hars
Oct  6 19:29:11 mimc200 lpr.err kernel: hars

Can anyone shed light on which might be causing these ?

What extra info can I supply to assist the ml in helping me ?

Regards
Mark
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