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Date: Sun, 25 Feb 2001 09:40:26 +0000 (UTC)
From: Adam Fritzler <mid@earth.zigamorph.net>
To: linux-kernel@vger.kernel.org
Subject: Re: Core dumps for threads
In-Reply-To: <20010225221505.A12595@metastasis.f00f.org>
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Theres a patch floating around that does just that. Its an obvious
hack.  I would like to see something clean get into the mainstream
kernels.  Its a real pain not to have cores for threaded code.

It does work, however. It effectively dumps the thread that caused the
fault.  

(I have a complimentary hack that will dump the stacks of all the
rest of the threads as well (though its a good trick to get gdb to
interpret this). Available upon request.)

af

On Sun, 25 Feb 2001, Chris Wedgwood wrote:

> On Sat, Feb 24, 2001 at 09:57:44PM +0000, Alan Cox wrote:
> 
>     The I/O to dump the core would race other changes on the mm. The
>     right fix is probably to copy the mm (as fork does) then dump the
>     copy.
> 
> Stupid question... but since all threads see the same memory space as
> each other; can we not lock the entire vma for the process whilst
> it's being written out?
> 
> 
> 
>   --cw
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