linux-kernel - Re: [Tux3] Tux3 report: A Golden Copy

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Message-ID: <495B2A02.5010701@gmail.com>
Date:	Wed, 31 Dec 2008 00:14:58 -0800
From:	"Justin P. Mattock" <justinmattock@...il.com>
To:	Daniel Phillips <phillips@...nq.net>
CC:	tux3@...3.org, sniper <s3c24xx@...il.com>,
	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [Tux3] Tux3 report: A Golden Copy

Daniel Phillips wrote:
> On Tuesday 30 December 2008 23:34, sniper wrote:
>   
>> Great, I have mounted tux3 filesystem under UML with stuffs in this mail,
>> but I still can't debug it with gdb. Anyone gives me suggestion?
>>     
>
> You just have to give a "cont" command a bunch of times and you will
> eventually get to a command prompt.  The reason for this is, uml uses
> the segfault interrupt as part of its machine simulation, and there
> is no exsiting way for uml and gdb to communicate in such a way that
> uml can recognize that the interrupt came from its own code and filter
> it.
>
> Jeff Dike is the expert on this, and Daniel Jacobowitz is the expert
> on the gdb side.  Fixing this would be a big effort, getting two complex
> systems to cooperate better, with nontrivial API issues to solve.  But
> UML is such a wonderful kernel development tool that it might be worth
> the effort.
>
> In the mean time, you could just tell gdb to mask off all segfaults,
> but would be kind of problematic for debugging.
>
> Regards,
>
> Daniel
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>   
Hmm.. seems like a redundancy;
Anyways I looked at you're site, but am still
confused at what tux3 is: what is tux3?
(at first I thought it was  a  video game, but was wrong);
can I use tux3 to secure a linux system or is it for
something else?

regards;

Justin P. Mattock
 
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