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Groups > linux.kernel > #1456188
| From | Alessio Igor Bogani <alessio.bogani@elettra.eu> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [PATCH v2] powerpc/32: fix csum_partial_copy_generic() |
| Date | 2016-08-04 08:40 +0200 |
| Message-ID | <s2ktX-5fC-7@gated-at.bofh.it> (permalink) |
| References | <s1Gwy-3Wp-49@gated-at.bofh.it> <s2hZ8-3uE-5@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
Scott,
On 4 August 2016 at 05:53, Scott Wood <oss@buserror.net> wrote:
> On Tue, 2016-08-02 at 10:07 +0200, 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()")
>> Cc: stable@vger.kernel.org
>>
>> Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
>> ---
>> v2: updated comments as suggested by Segher
>>
>> arch/powerpc/lib/checksum_32.S | 7 ++++---
>> 1 file changed, 4 insertions(+), 3 deletions(-)
>
> Alessio, can you confirm whether this fixes the problem you reported?
No unfortunately.
Ciao,
Alessio
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[PATCH v2] powerpc/32: fix csum_partial_copy_generic() Christophe Leroy <christophe.leroy@c-s.fr> - 2016-08-02 14:00 +0200
Re: [PATCH v2] powerpc/32: fix csum_partial_copy_generic() Segher Boessenkool <segher@kernel.crashing.org> - 2016-08-02 15:40 +0200
Re: [PATCH v2] powerpc/32: fix csum_partial_copy_generic() Segher Boessenkool <segher@kernel.crashing.org> - 2016-08-02 16:40 +0200
Re: [PATCH v2] powerpc/32: fix csum_partial_copy_generic() Scott Wood <oss@buserror.net> - 2016-08-04 06:00 +0200
Re: [PATCH v2] powerpc/32: fix csum_partial_copy_generic() Alessio Igor Bogani <alessio.bogani@elettra.eu> - 2016-08-04 08:40 +0200
Re: [PATCH v2] powerpc/32: fix csum_partial_copy_generic() Michael Ellerman <mpe@ellerman.id.au> - 2016-08-05 09:00 +0200
Re: [PATCH v2] powerpc/32: fix csum_partial_copy_generic() Christophe Leroy <christophe.leroy@c-s.fr> - 2016-08-05 09:30 +0200
Re: [PATCH v2] powerpc/32: fix csum_partial_copy_generic() Michael Ellerman <mpe@ellerman.id.au> - 2016-08-05 11:40 +0200
Re: [v2] powerpc/32: fix csum_partial_copy_generic() Michael Ellerman <patch-notifications@ellerman.id.au> - 2016-08-10 21:50 +0200
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