Thread (9 messages) flat view 9 messages, 6 authors, 2016-08-10

Re: [PATCH v2] powerpc/32: fix csum_partial_copy_generic()

From: Michael Ellerman <mpe@ellerman.id.au>
Date: 2016-08-05 09:39:50
Also in: lkml, stable

Christophe Leroy [off-list ref] writes:
Le 05/08/2016 =C3=A0 08:57, Michael Ellerman a =C3=A9crit :
quoted
Alessio Igor Bogani [off-list ref] writes:
quoted
On 4 August 2016 at 05:53, Scott Wood [off-list ref] wrote:
quoted
On Tue, 2016-08-02 at 10:07 +0200, Christophe Leroy wrote:
quoted
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
The purpose of this patch was not to address Alessio's issue, but to fix=
=20
a huge issue on checksum calculation which induces breakdown of TCP=20
connections.

I think it is worth commiting it upstream and on impacted stable=20
releases, allthought we don't have yet identified the issue Alessio's has.
OK. I'll put it back into fixes on Monday if I haven't heard anything
further.

cheers
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