linux-kernel - Re: [BUG] SLOB breaks Crypto

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Date:	Wed, 19 May 2010 13:32:41 +0200
From:	Geert Uytterhoeven <geert@...ux-m68k.org>
To:	David Woodhouse <dwmw2@...radead.org>
Cc:	Herbert Xu <herbert@...dor.hengli.com.au>,
	David Miller <davem@...emloft.net>, penberg@...helsinki.fi,
	mpm@...enic.com, ken@...elabs.ch, michael-dev@...i-braun.de,
	linux-kernel@...r.kernel.org, linux-crypto@...r.kernel.org,
	anemo@....ocn.ne.jp
Subject: Re: [BUG] SLOB breaks Crypto

On Wed, May 19, 2010 at 09:14, David Woodhouse <dwmw2@...radead.org> wrote:
> On Wed, 2010-05-19 at 11:05 +1000, Herbert Xu wrote:
>> While this problem wouldn't have occurred, we would instead have
>> data corruption/alignment faults on architectures such as sparc32
>> or ARM that require 64-bit alignment for 64-bit objects.
>
> Yeah, but that's what ARCH_SLAB_MINALIGN is for.
>
> ARM gets this right, and Dave has already said he's going to fix sparc.

Instead of having (different) defaults in sl[aou]b, perhaps we should just
remove the defaults completely, to ensure all architectures set
ARCH_SLAB_MINALIGN to the correct value?

Gr{oetje,eeting}s,

						Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
							    -- Linus Torvalds
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