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From: Harald Freudenberger <hfreude@linux.vnet.ibm.com>
To: Harald Freudenberger <freude@linux.vnet.ibm.com>
Cc: Herbert Xu <herbert@gondor.apana.org.au>, linux-crypto@vger.kernel.org
Subject: Re: [PATCH] crypto: s390 - fix concurrency issue in aes-ctr mode
Date: Tue, 21 Jan 2014 16:04:42 +0100	[thread overview]
Message-ID: <1390316682.25689.2.camel@Ubuntu12> (raw)
In-Reply-To: <1389884471-24964-1-git-send-email-freude@linux.vnet.ibm.com>

On Thu, 2014-01-16 at 16:01 +0100, Harald Freudenberger wrote:

> The aes-ctr mode uses one preallocated page without any concurrency
> protection. When multiple threads run aes-ctr encryption or decryption
> this can lead to data corruption.
> 
> The patch introduces locking for the page and a fallback solution with
> slower en/decryption performance in concurrency situations.
> 
> Signed-off-by: Harald Freudenberger <freude@linux.vnet.ibm.com>
> ---
>  arch/s390/crypto/aes_s390.c |   65 ++++++++++++++++++++++++++++++-------------
>  1 file changed, 46 insertions(+), 19 deletions(-)

Herbert, could you please add Cc: stable@vger.kernel.org to this?

Thanks

      reply	other threads:[~2014-01-21 15:04 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-01-16 15:01 [PATCH] crypto: s390 - fix concurrency issue in aes-ctr mode Harald Freudenberger
2014-01-21 15:04 ` Harald Freudenberger [this message]

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