From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-3.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 41F80CA9EB9 for ; Sat, 26 Oct 2019 15:57:51 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 1E5122070B for ; Sat, 26 Oct 2019 15:57:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726350AbfJZP5t (ORCPT ); Sat, 26 Oct 2019 11:57:49 -0400 Received: from smtprelay0232.hostedemail.com ([216.40.44.232]:60793 "EHLO smtprelay.hostedemail.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726202AbfJZP5t (ORCPT ); Sat, 26 Oct 2019 11:57:49 -0400 Received: from filter.hostedemail.com (clb03-v110.bra.tucows.net [216.40.38.60]) by smtprelay01.hostedemail.com (Postfix) with ESMTP id C1BD5100E7B40; Sat, 26 Oct 2019 15:57:47 +0000 (UTC) X-Session-Marker: 6A6F6540706572636865732E636F6D X-HE-Tag: sound93_43b2453be8601 X-Filterd-Recvd-Size: 2094 Received: from XPS-9350.home (unknown [47.151.135.224]) (Authenticated sender: joe@perches.com) by omf11.hostedemail.com (Postfix) with ESMTPA; Sat, 26 Oct 2019 15:57:45 +0000 (UTC) Message-ID: <2c13c39acb55df5dbb0d40c806bb1d7dc4bde2ae.camel@perches.com> Subject: Re: [PATCH v2 05/17] add support for Clang's Shadow Call Stack (SCS) From: Joe Perches To: samitolvanen@google.com, Will Deacon , Catalin Marinas , Steven Rostedt , Masami Hiramatsu , Ard Biesheuvel Cc: Dave Martin , Kees Cook , Laura Abbott , Mark Rutland , Nick Desaulniers , Jann Horn , Miguel Ojeda , Masahiro Yamada , clang-built-linux@googlegroups.com, kernel-hardening@lists.openwall.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Date: Sat, 26 Oct 2019 08:57:41 -0700 In-Reply-To: <20191024225132.13410-6-samitolvanen@google.com> References: <20191018161033.261971-1-samitolvanen@google.com> <20191024225132.13410-1-samitolvanen@google.com> <20191024225132.13410-6-samitolvanen@google.com> Content-Type: text/plain; charset="ISO-8859-1" User-Agent: Evolution 3.34.1-2 MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, 2019-10-24 at 15:51 -0700, samitolvanen@google.com wrote: > This change adds generic support for Clang's Shadow Call Stack, > which uses a shadow stack to protect return addresses from being > overwritten by an attacker. Details are available here: [] > diff --git a/include/linux/compiler-clang.h b/include/linux/compiler-clang.h [] > @@ -42,3 +42,9 @@ > * compilers, like ICC. > */ > #define barrier() __asm__ __volatile__("" : : : "memory") > + > +#if __has_feature(shadow_call_stack) > +# define __noscs __attribute__((no_sanitize("shadow-call-stack"))) __no_sanitize__ From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-3.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3E073CA9EB9 for ; Sat, 26 Oct 2019 15:58:06 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 09FB321871 for ; Sat, 26 Oct 2019 15:58:05 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="Z29v83M3" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 09FB321871 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=perches.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Date:To:From:Subject:Message-ID:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=nGe5KjEGz9/32MRBt5CSiJqeQlxg2f9ijItkgXz/efM=; b=Z29v83M3R9tD6V LHR4ordqTWRXxL4NFCVBhmbsIGi2wvZJp9815BQy7/SpU/zGIaaVEkQAJUOzWX0vNBAlWba85Jj6o OrUdBLrzYLw5VcMLG+GiKHLZ+Pj3EgJS+IvK19h+KSkHhrAuvf94hpASETQBgyF3rKEmNknigL0yk f4p7j01ubzGu7TpDeQf9E5ay7P95FP5R3v8TcKNVFEmAsOBp0LOPXx2dey5LXzH4qe9st9m/3VCdV Uewtjnny6xRYVMBqR+9dkpKbL/ZuWFL3WDqERfFYm8chsfCPXleOsKZq0DlDN5xkM0YPY9NjHrsp0 jEG9jbtJGyV+XKsY/Ikw==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1iOOS4-0004hA-DX; Sat, 26 Oct 2019 15:58:04 +0000 Received: from smtprelay0231.hostedemail.com ([216.40.44.231] helo=smtprelay.hostedemail.com) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1iOOS1-0004gg-44 for linux-arm-kernel@lists.infradead.org; Sat, 26 Oct 2019 15:58:02 +0000 Received: from filter.hostedemail.com (clb03-v110.bra.tucows.net [216.40.38.60]) by smtprelay01.hostedemail.com (Postfix) with ESMTP id C1BD5100E7B40; Sat, 26 Oct 2019 15:57:47 +0000 (UTC) X-Session-Marker: 6A6F6540706572636865732E636F6D X-HE-Tag: sound93_43b2453be8601 X-Filterd-Recvd-Size: 2094 Received: from XPS-9350.home (unknown [47.151.135.224]) (Authenticated sender: joe@perches.com) by omf11.hostedemail.com (Postfix) with ESMTPA; Sat, 26 Oct 2019 15:57:45 +0000 (UTC) Message-ID: <2c13c39acb55df5dbb0d40c806bb1d7dc4bde2ae.camel@perches.com> Subject: Re: [PATCH v2 05/17] add support for Clang's Shadow Call Stack (SCS) From: Joe Perches To: samitolvanen@google.com, Will Deacon , Catalin Marinas , Steven Rostedt , Masami Hiramatsu , Ard Biesheuvel Date: Sat, 26 Oct 2019 08:57:41 -0700 In-Reply-To: <20191024225132.13410-6-samitolvanen@google.com> References: <20191018161033.261971-1-samitolvanen@google.com> <20191024225132.13410-1-samitolvanen@google.com> <20191024225132.13410-6-samitolvanen@google.com> User-Agent: Evolution 3.34.1-2 MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20191026_085801_234137_AF7CB601 X-CRM114-Status: UNSURE ( 8.06 ) X-CRM114-Notice: Please train this message. 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: Mark Rutland , Kees Cook , Jann Horn , Masahiro Yamada , kernel-hardening@lists.openwall.com, Nick Desaulniers , linux-kernel@vger.kernel.org, Miguel Ojeda , clang-built-linux@googlegroups.com, Laura Abbott , Dave Martin , linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Thu, 2019-10-24 at 15:51 -0700, samitolvanen@google.com wrote: > This change adds generic support for Clang's Shadow Call Stack, > which uses a shadow stack to protect return addresses from being > overwritten by an attacker. Details are available here: [] > diff --git a/include/linux/compiler-clang.h b/include/linux/compiler-clang.h [] > @@ -42,3 +42,9 @@ > * compilers, like ICC. > */ > #define barrier() __asm__ __volatile__("" : : : "memory") > + > +#if __has_feature(shadow_call_stack) > +# define __noscs __attribute__((no_sanitize("shadow-call-stack"))) __no_sanitize__ _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-3.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 18C26CA9EB9 for ; Sat, 26 Oct 2019 15:58:09 +0000 (UTC) Received: from mother.openwall.net (mother.openwall.net [195.42.179.200]) by mail.kernel.org (Postfix) with SMTP id 6B0CD2070B for ; Sat, 26 Oct 2019 15:58:08 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 6B0CD2070B Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=perches.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=kernel-hardening-return-17134-kernel-hardening=archiver.kernel.org@lists.openwall.com Received: (qmail 26615 invoked by uid 550); 26 Oct 2019 15:58:01 -0000 Mailing-List: contact kernel-hardening-help@lists.openwall.com; run by ezmlm Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-ID: Received: (qmail 26597 invoked from network); 26 Oct 2019 15:58:00 -0000 X-Session-Marker: 6A6F6540706572636865732E636F6D X-HE-Tag: sound93_43b2453be8601 X-Filterd-Recvd-Size: 2094 Message-ID: <2c13c39acb55df5dbb0d40c806bb1d7dc4bde2ae.camel@perches.com> Subject: Re: [PATCH v2 05/17] add support for Clang's Shadow Call Stack (SCS) From: Joe Perches To: samitolvanen@google.com, Will Deacon , Catalin Marinas , Steven Rostedt , Masami Hiramatsu , Ard Biesheuvel Cc: Dave Martin , Kees Cook , Laura Abbott , Mark Rutland , Nick Desaulniers , Jann Horn , Miguel Ojeda , Masahiro Yamada , clang-built-linux@googlegroups.com, kernel-hardening@lists.openwall.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Date: Sat, 26 Oct 2019 08:57:41 -0700 In-Reply-To: <20191024225132.13410-6-samitolvanen@google.com> References: <20191018161033.261971-1-samitolvanen@google.com> <20191024225132.13410-1-samitolvanen@google.com> <20191024225132.13410-6-samitolvanen@google.com> Content-Type: text/plain; charset="ISO-8859-1" User-Agent: Evolution 3.34.1-2 MIME-Version: 1.0 Content-Transfer-Encoding: 7bit On Thu, 2019-10-24 at 15:51 -0700, samitolvanen@google.com wrote: > This change adds generic support for Clang's Shadow Call Stack, > which uses a shadow stack to protect return addresses from being > overwritten by an attacker. Details are available here: [] > diff --git a/include/linux/compiler-clang.h b/include/linux/compiler-clang.h [] > @@ -42,3 +42,9 @@ > * compilers, like ICC. > */ > #define barrier() __asm__ __volatile__("" : : : "memory") > + > +#if __has_feature(shadow_call_stack) > +# define __noscs __attribute__((no_sanitize("shadow-call-stack"))) __no_sanitize__