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To: Christophe Leroy <christophe.leroy@c-s.fr>,
 Benjamin Herrenschmidt <benh@kernel.crashing.org>,
 Paul Mackerras <paulus@samba.org>, Scott Wood <oss@buserror.net>
From: Michael Ellerman <patch-notifications@ellerman.id.au>
Cc: Antoine Blangy <antoine.blangy@c-s.fr>,
 Alessio Igor Bogani <alessio.bogani@elettra.eu>, linuxppc-dev@lists.ozlabs.org,
 linux-kernel@vger.kernel.org, stable@vger.kernel.org
Subject: Re: powerpc/32: fix again csum_partial_copy_generic()
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Date: Thu,  8 Sep 2016 19:47:51 +1000 (AEST)
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On Fri, 2016-26-08 at 14:45:13 UTC, Christophe Leroy wrote:
> commit 7aef4136566b0 ("powerpc32: rewrite csum_partial_copy_generic()
> based on copy_tofrom_user()") introduced a bug when destination
> address is odd and len is lower than cacheline size.
> 
> In that case the resulting csum value doesn't have to be rotated one
> byte because the cache-aligned copy part is skipped so no alignment
> is performed.
> 
> Fixes: 7aef4136566b0 ("powerpc32: rewrite csum_partial_copy_generic() based on copy_tofrom_user()")
> Cc: stable@vger.kernel.org
> Reported-by: Alessio Igor Bogani <alessio.bogani@elettra.eu>
> Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
> Tested-by: Alessio Igor Bogani <alessio.bogani@elettra.eu>

Applied to powerpc fixes, thanks.

https://git.kernel.org/powerpc/c/8540571e01f973d321b0821f4f

cheers