From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:46200 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751709AbbIQFYX (ORCPT ); Thu, 17 Sep 2015 01:24:23 -0400 Subject: Patch "crypto: vmx - Fixing GHASH Key issue on little endian" has been added to the 4.1-stable tree To: leosilva@linux.vnet.ibm.com, gregkh@linuxfoundation.org, herbert@gondor.apana.org.au Cc: , From: Date: Wed, 16 Sep 2015 22:24:11 -0700 Message-ID: <1442467451107121@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org List-ID: This is a note to let you know that I've just added the patch titled crypto: vmx - Fixing GHASH Key issue on little endian to the 4.1-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: crypto-vmx-fixing-ghash-key-issue-on-little-endian.patch and it can be found in the queue-4.1 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >>From 3c5f0ed78e976be705218cad62acf6a68e9d121e Mon Sep 17 00:00:00 2001 From: Leonidas Da Silva Barbosa Date: Fri, 14 Aug 2015 10:14:16 -0300 Subject: crypto: vmx - Fixing GHASH Key issue on little endian From: Leonidas Da Silva Barbosa commit 3c5f0ed78e976be705218cad62acf6a68e9d121e upstream. GHASH table algorithm is using a big endian key. In little endian machines key will be LE ordered. After a lxvd2x instruction key is loaded as it is, LE/BE order, in first case it'll generate a wrong table resulting in wrong hashes from the algorithm. Bug affects only LE machines. In order to fix it we do a swap for loaded key. Signed-off-by: Leonidas S Barbosa Signed-off-by: Herbert Xu Signed-off-by: Greg Kroah-Hartman --- drivers/crypto/vmx/ghashp8-ppc.pl | 6 ++++++ 1 file changed, 6 insertions(+) --- a/drivers/crypto/vmx/ghashp8-ppc.pl +++ b/drivers/crypto/vmx/ghashp8-ppc.pl @@ -61,6 +61,12 @@ $code=<<___; mtspr 256,r0 li r10,0x30 lvx_u $H,0,r4 # load H + le?xor r7,r7,r7 + le?addi r7,r7,0x8 # need a vperm start with 08 + le?lvsr 5,0,r7 + le?vspltisb 6,0x0f + le?vxor 5,5,6 # set a b-endian mask + le?vperm $H,$H,$H,5 vspltisb $xC2,-16 # 0xf0 vspltisb $t0,1 # one Patches currently in stable-queue which might be from leosilva@linux.vnet.ibm.com are queue-4.1/crypto-vmx-fixing-ghash-key-issue-on-little-endian.patch