From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:36514 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751995AbdGSJoi (ORCPT ); Wed, 19 Jul 2017 05:44:38 -0400 Subject: Patch "crypto: sha1-ssse3 - Disable avx2" has been added to the 4.4-stable tree To: herbert@gondor.apana.org.au, gregkh@linuxfoundation.org, jstancek@redhat.com Cc: , From: Date: Wed, 19 Jul 2017 11:44:31 +0200 Message-ID: <1500457471233240@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: sha1-ssse3 - Disable avx2 to the 4.4-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-sha1-ssse3-disable-avx2.patch and it can be found in the queue-4.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >>From b82ce24426a4071da9529d726057e4e642948667 Mon Sep 17 00:00:00 2001 From: Herbert Xu Date: Tue, 4 Jul 2017 12:21:12 +0800 Subject: crypto: sha1-ssse3 - Disable avx2 From: Herbert Xu commit b82ce24426a4071da9529d726057e4e642948667 upstream. It has been reported that sha1-avx2 can cause page faults by reading beyond the end of the input. This patch disables it until it can be fixed. Fixes: 7c1da8d0d046 ("crypto: sha - SHA1 transform x86_64 AVX2") Reported-by: Jan Stancek Signed-off-by: Herbert Xu Signed-off-by: Greg Kroah-Hartman --- arch/x86/crypto/sha1_ssse3_glue.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/arch/x86/crypto/sha1_ssse3_glue.c +++ b/arch/x86/crypto/sha1_ssse3_glue.c @@ -201,7 +201,7 @@ asmlinkage void sha1_transform_avx2(u32 static bool avx2_usable(void) { - if (avx_usable() && boot_cpu_has(X86_FEATURE_AVX2) + if (false && avx_usable() && boot_cpu_has(X86_FEATURE_AVX2) && boot_cpu_has(X86_FEATURE_BMI1) && boot_cpu_has(X86_FEATURE_BMI2)) return true; Patches currently in stable-queue which might be from herbert@gondor.apana.org.au are queue-4.4/crypto-atmel-only-treat-ebusy-as-transient-if-backlog.patch queue-4.4/crypto-talitos-extend-max-key-length-for-sha384-512-hmac-and-aead.patch queue-4.4/crypto-caam-fix-signals-handling.patch queue-4.4/crypto-sha1-ssse3-disable-avx2.patch