linux-kernel - Re: Memory allocator semantics

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Date:	Mon, 10 Feb 2014 13:07:58 -0600 (CST)
From:	Christoph Lameter <cl@...ux.com>
To:	Pekka Enberg <penberg@....fi>
cc:	paulmck@...ux.vnet.ibm.com, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org, penberg@...nel.org, mpm@...enic.com
Subject: Re: Memory allocator semantics

On Sat, 8 Feb 2014, Pekka Enberg wrote:

> So to be completely honest, I don't understand what is the race in (A) that
> concerns the *memory allocator*.  I also don't what the memory allocator can
> do in (B) and (C) which look like double-free and use-after-free,
> respectively, to me. :-)

Well it seems to be some academic mind game to me.

Does an invocation of the allocator have barrier semantics or not?




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