linux-kernel - Re: [v2] powerpc/32: fix csum_partial_copy

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Date:	Wed, 10 Aug 2016 22:46:33 +1000 (AEST)
From:	Michael Ellerman <patch-notifications@...erman.id.au>
To:	Christophe Leroy <christophe.leroy@....fr>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Paul Mackerras <paulus@...ba.org>,
	Scott Wood <oss@...error.net>
Cc:	antoine.blangy@....fr, linuxppc-dev@...ts.ozlabs.org,
	linux-kernel@...r.kernel.org, stable@...r.kernel.org
Subject: Re: [v2] powerpc/32: fix csum_partial_copy_generic()

On Tue, 2016-02-08 at 08:07:05 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 initial csum is not null
> 
> In that (rare) case the initial csum value has to be rotated one byte
> as well as the resulting value is
> 
> This patch also fixes related comments
> 
> Fixes: 7aef4136566b0 ("powerpc32: rewrite csum_partial_copy_generic() based on copy_tofrom_user()")
> Signed-off-by: Christophe Leroy <christophe.leroy@....fr>

Applied to powerpc fixes, thanks.

https://git.kernel.org/powerpc/c/1bc8b816cb8058c31f61fe7844

cheers