A400-6X always crashes after a while

Using the 2.4.18-pa26 kernel on my A400-6X, the machine doesn't want to stay alive for more than about a day. The console log shows this:

~~~

Kernel panic: sba_iommu.c: I/O MMU @ fffffffffed22000 is out of mapping resources

<6>sym53c896-3-<15,0>: extraneous data discarded. sym53c896-3-<15,0>: COMMAND FAILED (89 0) @0000000016c95800.

Kernel panic: sba_iommu.c: I/O MMU @ fffffffffed22000 is out of mapping resources

In interrupt handler - not syncing
~~~

Does anyone know what might be causing this?

tia,
Duraid

That's my code.

It's possible the sym53c896 driver isn't releasing mapping resources in the above error path.

Under workload, can you
1) run the following shell script:

	while :
	do
		date >> ~/Astro.out
		cat /proc/bus/runway/Astro | fgrep PDIR >> ~/Astro.out
		sleep 10
	done

2) provide matching /var/log/syslog for the same timeframe.
3) explain briefly what the workload is.

The idea here is to monitor PDIR resource over time as whatever workload you are running exercises the system. In the meantime, I'll look at sym53c8xx driver and see if it's obviously not releasing the mapping resource.

grant