IIRC, NetBSD versions prior to 1.3.2 didn't work so well on the SS5.  I
strongly suggest upgrading to 1.3.2, and then see if the problem persists.

If there's still a problem, get back to us :) 

Chuck Youse
cyouse@syncom.net


On Wed, 26 Aug 1998, Erik Bertelsen wrote:

> 
> On a SS5 with a recent NetBSD 1.3 install, we've seen the kernel panic
> with 'dvma_mapin: null page frame' several times, mostly under medium to
> high load of the machine.
> 
> The trace back is:
> 
>   dvma_mapin
>   kdvma_mapin
>   dma-setup
>   esp_dma_setup
>   ncr53c9x_intr
>   sparc_intrrupt44c
> 
> As it happens from time to time (sometimes several times a day), I can do
> further investigations, if I get a few hints about what to look for.
> 
> But my question is: is this a known problem, and is it possibly solved in
> 1.3.2 or in -current ?
> 
> Upgrading is not really an options at this time, but backporting a patch
> from a later system may be.
> 
> If this problem is not recognized as something obvious by people on this
> mailing list, I'll probably file a PR on it sometime next week.
> 
> regards
> Erik Bertelsen
> 
>