From: Harald Freudenberger <freude@linux.vnet.ibm.com>
To: Herbert Xu <herbert@gondor.apana.org.au>
Cc: linux-crypto@vger.kernel.org,
Martin Schwidefsky <schwidefsky@de.ibm.com>,
Ingo Tuchscherer <ingo.tuchscherer@linux.vnet.ibm.com>,
Gerald Schaefer <gerald.schaefer@de.ibm.com>,
Harald Freudenberger <freude@de.ibm.com>,
Harald Freudenberger <freude@linux.vnet.ibm.com>
Subject: [PATCH] s390/crypto: fix aes ctr concurrency issue
Date: Tue, 19 Nov 2013 11:22:11 +0100 [thread overview]
Message-ID: <1384856532-17247-1-git-send-email-freude@linux.vnet.ibm.com> (raw)
The aes-ctr mode used one preallocated page without any concurrency
protection. When multiple threads run aes-ctr encryption or decryption
this could lead to data corruption.
The patch introduces locking for the preallocated page and alternatively
allocating and freeing of an temp page in concurrency situations.
Signed-off-by: Harald Freudenberger <freude@linux.vnet.ibm.com>
Harald Freudenberger (1):
s390/crypto: fix aes ctr concurrency issue
arch/s390/crypto/aes_s390.c | 55 ++++++++++++++++++++++++++++++++----------
1 files changed, 42 insertions(+), 13 deletions(-)
next reply other threads:[~2013-11-19 10:22 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-11-19 10:22 Harald Freudenberger [this message]
2013-11-19 10:22 ` [PATCH] s390/crypto: fix aes ctr concurrency issue Harald Freudenberger
2013-11-28 14:00 ` Herbert Xu
2013-11-28 15:39 ` Harald Freudenberger
2013-11-29 1:50 ` Herbert Xu
2013-11-29 8:58 ` Harald Freudenberger
2013-11-22 13:58 ` Gerald Schaefer
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