From mboxrd@z Thu Jan  1 00:00:00 1970
From: Jeremy Fitzhardinge <jeremy@goop.org>
Subject: Re: Dom0 crash after bad use of gntdev
Date: Mon, 06 Dec 2010 10:18:43 -0800
Message-ID: <4CFD2903.3010705@goop.org>
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To: James Harper <james.harper@bendigoit.com.au>
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On 12/05/2010 09:43 PM, James Harper wrote:
> I have a bug in some code running in Dom0 that uses gntdev and it's
> crashing Dom0 when it goes wrong. I'm not sure exactly what it's doing
> wrong but is it acceptable for this to happen? The things I know are
> that I'm passing an invalid array to xc_gnttab_map_grant_refs and then
> unmapping it without checking the result of the mapping. I'm not sure
> what else is going on aside from those two things.

In principle the kernel shouldn't crash as a result from misuse of an
ABI, and it often indicates some problem which might affect things in a
more subtle way under other circumstances.  Can you post the details of
your crash and what your program is doing?

Thanks,
    J