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auth=pass smtp.auth=C51A453 smtp.mailfrom=david.laight@aculab.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: aculab.com Content-Language: en-US X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20201116_095505_570639_48032689 X-CRM114-Status: GOOD ( 15.72 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: "stable@vger.kernel.org" , "linux-sunxi@googlegroups.com" , "linux-crypto@vger.kernel.org" , "linux-arm-kernel@lists.infradead.org" , "linux-kernel@vger.kernel.org" Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org From: Corentin Labbe > Sent: 16 November 2020 13:54 > > The optimized cipher function need length multiple of 4 bytes. > But it get sometimes odd length. > This is due to SG data could be stored with an offset. > > So the fix is to check also if the offset is aligned with 4 bytes. > Fixes: 6298e948215f2 ("crypto: sunxi-ss - Add Allwinner Security System crypto accelerator") > Cc: > Signed-off-by: Corentin Labbe > --- > drivers/crypto/allwinner/sun4i-ss/sun4i-ss-cipher.c | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) > > diff --git a/drivers/crypto/allwinner/sun4i-ss/sun4i-ss-cipher.c b/drivers/crypto/allwinner/sun4i- > ss/sun4i-ss-cipher.c > index 19f1aa577ed4..4dd736ee5a4d 100644 > --- a/drivers/crypto/allwinner/sun4i-ss/sun4i-ss-cipher.c > +++ b/drivers/crypto/allwinner/sun4i-ss/sun4i-ss-cipher.c > @@ -186,12 +186,12 @@ static int sun4i_ss_cipher_poll(struct skcipher_request *areq) > * we can use the SS optimized function > */ > while (in_sg && no_chunk == 1) { > - if (in_sg->length % 4) > + if (in_sg->length % 4 || !IS_ALIGNED(in_sg->offset, sizeof(u32))) You probably ought to do the test in a consistent manner. Probably something that reduces to: ((unsigned long)in_sg->offset | in_sg->length) & 3u David - Registered Address Lakeside, Bramley Road, Mount Farm, Milton Keynes, MK1 1PT, UK Registration No: 1397386 (Wales) _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel