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=-2.5 required=3.0 tests=DKIMWL_WL_MED,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS, USER_AGENT_MUTT autolearn=unavailable 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 04CD0C282DD for ; Wed, 17 Apr 2019 19:52:21 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C4F8C21773 for ; Wed, 17 Apr 2019 19:52:20 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=tycho-ws.20150623.gappssmtp.com header.i=@tycho-ws.20150623.gappssmtp.com header.b="aQd1aeO2" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1733157AbfDQTwT (ORCPT ); Wed, 17 Apr 2019 15:52:19 -0400 Received: from mail-qk1-f193.google.com ([209.85.222.193]:45421 "EHLO mail-qk1-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729291AbfDQTwT (ORCPT ); Wed, 17 Apr 2019 15:52:19 -0400 Received: by mail-qk1-f193.google.com with SMTP id z76so15092791qkb.12 for ; Wed, 17 Apr 2019 12:52:18 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=tycho-ws.20150623.gappssmtp.com; s=20150623; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to:user-agent; bh=Uru0Jbz4B8OYoAQYJt2C55pxQlJkGfm/+9nWfpEgZPQ=; b=aQd1aeO2CXg7gYGOcvtEUcXMyHfbY37wbHMchotalTNQZ2RxhJxZjLextp8ZWtQKA9 ElDQno8BAegcG5tWka17SzrohZ4MVbbZKar4D1otZqJs6viRLbUgEjktrlyhXOKFoRRr Xqiz5AKyn2cqhIrRtLq2t6y4exSmyJWI+xolW690Pg05j5xcNprdRzKeq2BM/bBe7uD9 Mna5BBYIALxIoHSfeGneAc4J6qlxgdl4umsVpI32Ws6NYWtDPh57d2uN8d9IDlmzf+34 LgmN/QkDbE6mdN4NdIUb/v42FYkyBUW0DAfjxZ5Ti4wxRTTn11MCXXYyLy0I5wiy+cup dbCA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to:user-agent; bh=Uru0Jbz4B8OYoAQYJt2C55pxQlJkGfm/+9nWfpEgZPQ=; b=q9FfDvP9f02ol6n8cUk5/w2ZUd/AzNPsyB30k5PVAq8TZiCwLujaZfOcZUa6qnI8TF GGBolF+WGJFQ8kl1pk8ZiG/TT0Lm0PTKNKttuN4Of4TUrtAqGdbulvw8uXm6CKJZnCL+ syuRqYBRIR94gQiJEvKY4VzdchDqOypO3NISPs6wZADaVqnK3pMyInc2Po2QGaF+YYut +vJ4QNn0mpLCojKcVn44nzevTR96uRCt7P3XjCybzOmqKlo9A+o5GTzS6ip1spRY5lId Aj+kl+4aci/NjssrJ43etnMJtNdzWGagzDmTTyYHpsHs1w3zGYh7G9F46G4jrKggmMMy QgSA== X-Gm-Message-State: APjAAAXMH9QtHH0h9vNYZH2mqH2/Tjvsko/BRJ6XLQNJOC+XwQpqY+/I xh0oO+iqzLCj7Q+/BAZIuDjCzQ== X-Google-Smtp-Source: APXvYqxALLwioQYr156hXrQYUcVxn+eWorINAhsmvLl+aLFkTmy03SLo3tuclnCeyTO/WqSU4/UWYQ== X-Received: by 2002:ae9:e64d:: with SMTP id x13mr70666110qkl.112.1555530737946; Wed, 17 Apr 2019 12:52:17 -0700 (PDT) Received: from cisco ([2601:282:901:dd7b:7136:cebf:c0d3:8091]) by smtp.gmail.com with ESMTPSA id v30sm28498609qta.4.2019.04.17.12.52.15 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Wed, 17 Apr 2019 12:52:17 -0700 (PDT) Date: Wed, 17 Apr 2019 13:52:13 -0600 From: Tycho Andersen To: Andy Lutomirski Cc: Khalid Aziz , Ingo Molnar , Juerg Haefliger , jsteckli@amazon.de, Kees Cook , Konrad Rzeszutek Wilk , Juerg Haefliger , deepa.srinivasan@oracle.com, chris hyser , Tyler Hicks , "Woodhouse, David" , Andrew Cooper , Jon Masters , Boris Ostrovsky , iommu@lists.linux-foundation.org, X86 ML , linux-arm-kernel , "open list:DOCUMENTATION" , LKML , Linux-MM , LSM List , Khalid Aziz , Linus Torvalds , Andrew Morton , Thomas Gleixner , Peter Zijlstra , Dave Hansen , Borislav Petkov , "H. Peter Anvin" , Arjan van de Ven , Greg Kroah-Hartman Subject: Re: [RFC PATCH v9 03/13] mm: Add support for eXclusive Page Frame Ownership (XPFO) Message-ID: <20190417195213.GE3758@cisco> References: <20190417161042.GA43453@gmail.com> <20190417170918.GA68678@gmail.com> <8d314750-251c-7e6a-7002-5df2462ada6b@oracle.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Apr 17, 2019 at 12:49:04PM -0700, Andy Lutomirski wrote: > I also proposed using a gcc plugin (or upstream gcc feature) to add > some instrumentation to any code that pops RSP to verify that the > resulting (unsigned) change in RSP is between 0 and THREAD_SIZE bytes. > This will make ROP quite a bit harder. I've been playing around with this for a bit, and hope to have something to post Soon :) Tycho From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tycho Andersen Subject: Re: [RFC PATCH v9 03/13] mm: Add support for eXclusive Page Frame Ownership (XPFO) Date: Wed, 17 Apr 2019 13:52:13 -0600 Message-ID: <20190417195213.GE3758@cisco> References: <20190417161042.GA43453@gmail.com> <20190417170918.GA68678@gmail.com> <8d314750-251c-7e6a-7002-5df2462ada6b@oracle.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Content-Disposition: inline In-Reply-To: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: iommu-bounces-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org Errors-To: iommu-bounces-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org To: Andy Lutomirski Cc: Dave Hansen , Thomas Gleixner , "open list:DOCUMENTATION" , Linux-MM , Khalid Aziz , deepa.srinivasan-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org, "H. Peter Anvin" , Ingo Molnar , X86 ML , iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org, jsteckli-ebkRAfMGSJGzQB+pC5nmwQ@public.gmane.org, Arjan van de Ven , Peter Zijlstra , Konrad Rzeszutek Wilk , Jon Masters , Greg Kroah-Hartman , Borislav Petkov , Boris Ostrovsky , chris hyser , linux-arm-kernel , Khalid Aziz , Juerg Haefliger , Andrew Cooper , LKML List-Id: iommu@lists.linux-foundation.org On Wed, Apr 17, 2019 at 12:49:04PM -0700, Andy Lutomirski wrote: > I also proposed using a gcc plugin (or upstream gcc feature) to add > some instrumentation to any code that pops RSP to verify that the > resulting (unsigned) change in RSP is between 0 and THREAD_SIZE bytes. > This will make ROP quite a bit harder. I've been playing around with this for a bit, and hope to have something to post Soon :) Tycho 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=-2.3 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS,URIBL_BLOCKED, USER_AGENT_MUTT autolearn=ham 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 9A3BFC282DF for ; Wed, 17 Apr 2019 19:52:20 +0000 (UTC) Received: from mail.linuxfoundation.org (mail.linuxfoundation.org [140.211.169.12]) (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 61B0B2173C for ; Wed, 17 Apr 2019 19:52:20 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=tycho-ws.20150623.gappssmtp.com header.i=@tycho-ws.20150623.gappssmtp.com header.b="aQd1aeO2" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 61B0B2173C Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=tycho.ws Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=iommu-bounces@lists.linux-foundation.org Received: from mail.linux-foundation.org (localhost [127.0.0.1]) by mail.linuxfoundation.org (Postfix) with ESMTP id 22153C5C; Wed, 17 Apr 2019 19:52:20 +0000 (UTC) Received: from smtp1.linuxfoundation.org (smtp1.linux-foundation.org [172.17.192.35]) by mail.linuxfoundation.org (Postfix) with ESMTPS id BADC3B4B for ; Wed, 17 Apr 2019 19:52:19 +0000 (UTC) X-Greylist: whitelisted by SQLgrey-1.7.6 Received: from mail-qk1-f196.google.com (mail-qk1-f196.google.com [209.85.222.196]) by smtp1.linuxfoundation.org (Postfix) with ESMTPS id 2305887F for ; Wed, 17 Apr 2019 19:52:19 +0000 (UTC) Received: by mail-qk1-f196.google.com with SMTP id n68so15143119qka.1 for ; Wed, 17 Apr 2019 12:52:18 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=tycho-ws.20150623.gappssmtp.com; s=20150623; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to:user-agent; bh=Uru0Jbz4B8OYoAQYJt2C55pxQlJkGfm/+9nWfpEgZPQ=; b=aQd1aeO2CXg7gYGOcvtEUcXMyHfbY37wbHMchotalTNQZ2RxhJxZjLextp8ZWtQKA9 ElDQno8BAegcG5tWka17SzrohZ4MVbbZKar4D1otZqJs6viRLbUgEjktrlyhXOKFoRRr Xqiz5AKyn2cqhIrRtLq2t6y4exSmyJWI+xolW690Pg05j5xcNprdRzKeq2BM/bBe7uD9 Mna5BBYIALxIoHSfeGneAc4J6qlxgdl4umsVpI32Ws6NYWtDPh57d2uN8d9IDlmzf+34 LgmN/QkDbE6mdN4NdIUb/v42FYkyBUW0DAfjxZ5Ti4wxRTTn11MCXXYyLy0I5wiy+cup dbCA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to:user-agent; bh=Uru0Jbz4B8OYoAQYJt2C55pxQlJkGfm/+9nWfpEgZPQ=; b=JvUYozUm0zIyyZMN8bhapTVb+sxfWFyaf+g6v8UB+QtRUiuRhq1rGwTW9q9TXs+Bug CxSe/UNh7pcwOT7kB7mOZcVJbc2jfQgfYxfVoDAh6rQ97Um+YwR5GtCd8m9hbe+Wj/hG XqjwIHBxOs/DrYHbGXL1R6ZZ7COePf2lS8o+A/FZIOX6l5oApbXa1jR9yXyWtoOzRKMG nMxoMuliarLqk8YQBAS4h6AibyhVybV/n9KF/yF8oyX1rVKNEUvEKz9P4A1Wdm87wBFR HTfI51H0NGI57fVriXWcJvn/aBf5L4ojg4qxRP5LsIE5Fn1bA7cd2R2bxP6qIWy7fHJ0 7YJw== X-Gm-Message-State: APjAAAUEkYWPCgwDYNi25NBzUhUoPf07eiQAmOgBxua8K+5I9e+o2/Vg Qy6trWQNJjeSkOx3PXOWswtsuA== X-Google-Smtp-Source: APXvYqxALLwioQYr156hXrQYUcVxn+eWorINAhsmvLl+aLFkTmy03SLo3tuclnCeyTO/WqSU4/UWYQ== X-Received: by 2002:ae9:e64d:: with SMTP id x13mr70666110qkl.112.1555530737946; Wed, 17 Apr 2019 12:52:17 -0700 (PDT) Received: from cisco ([2601:282:901:dd7b:7136:cebf:c0d3:8091]) by smtp.gmail.com with ESMTPSA id v30sm28498609qta.4.2019.04.17.12.52.15 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Wed, 17 Apr 2019 12:52:17 -0700 (PDT) Date: Wed, 17 Apr 2019 13:52:13 -0600 From: Tycho Andersen To: Andy Lutomirski Subject: Re: [RFC PATCH v9 03/13] mm: Add support for eXclusive Page Frame Ownership (XPFO) Message-ID: <20190417195213.GE3758@cisco> References: <20190417161042.GA43453@gmail.com> <20190417170918.GA68678@gmail.com> <8d314750-251c-7e6a-7002-5df2462ada6b@oracle.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.10.1 (2018-07-13) Cc: Dave Hansen , Thomas Gleixner , "open list:DOCUMENTATION" , Linux-MM , Khalid Aziz , deepa.srinivasan@oracle.com, "H. Peter Anvin" , Ingo Molnar , X86 ML , iommu@lists.linux-foundation.org, jsteckli@amazon.de, Arjan van de Ven , Peter Zijlstra , Konrad Rzeszutek Wilk , Jon Masters , Greg Kroah-Hartman , Borislav Petkov , Boris Ostrovsky , chris hyser , linux-arm-kernel , Khalid Aziz , Juerg Haefliger , Andrew Cooper , LKML , Tyler Hicks , LSM List , Juerg Haefliger , Kees Cook , Andrew Morton , Linus Torvalds , "Woodhouse, David" X-BeenThere: iommu@lists.linux-foundation.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: Development issues for Linux IOMMU support List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Sender: iommu-bounces@lists.linux-foundation.org Errors-To: iommu-bounces@lists.linux-foundation.org Message-ID: <20190417195213.kS4aGmQPqDDgW179Ub10zgQlkE3rLsrxSA0GfQM5Gi8@z> On Wed, Apr 17, 2019 at 12:49:04PM -0700, Andy Lutomirski wrote: > I also proposed using a gcc plugin (or upstream gcc feature) to add > some instrumentation to any code that pops RSP to verify that the > resulting (unsigned) change in RSP is between 0 and THREAD_SIZE bytes. > This will make ROP quite a bit harder. I've been playing around with this for a bit, and hope to have something to post Soon :) Tycho _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu 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=-2.5 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS, URIBL_BLOCKED,USER_AGENT_MUTT autolearn=ham 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 3C00FC282DA for ; Wed, 17 Apr 2019 19:52:28 +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 0A5F7205C9 for ; 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Wed, 17 Apr 2019 12:52:17 -0700 (PDT) Received: from cisco ([2601:282:901:dd7b:7136:cebf:c0d3:8091]) by smtp.gmail.com with ESMTPSA id v30sm28498609qta.4.2019.04.17.12.52.15 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Wed, 17 Apr 2019 12:52:17 -0700 (PDT) Date: Wed, 17 Apr 2019 13:52:13 -0600 From: Tycho Andersen To: Andy Lutomirski Subject: Re: [RFC PATCH v9 03/13] mm: Add support for eXclusive Page Frame Ownership (XPFO) Message-ID: <20190417195213.GE3758@cisco> References: <20190417161042.GA43453@gmail.com> <20190417170918.GA68678@gmail.com> <8d314750-251c-7e6a-7002-5df2462ada6b@oracle.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.10.1 (2018-07-13) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190417_125219_957688_97209C72 X-CRM114-Status: GOOD ( 11.87 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Dave Hansen , Thomas Gleixner , "open list:DOCUMENTATION" , Linux-MM , Khalid Aziz , deepa.srinivasan@oracle.com, "H. Peter Anvin" , Ingo Molnar , X86 ML , iommu@lists.linux-foundation.org, jsteckli@amazon.de, Arjan van de Ven , Peter Zijlstra , Konrad Rzeszutek Wilk , Jon Masters , Greg Kroah-Hartman , Borislav Petkov , Boris Ostrovsky , chris hyser , linux-arm-kernel , Khalid Aziz , Juerg Haefliger , Andrew Cooper , LKML , Tyler Hicks , LSM List , Juerg Haefliger , Kees Cook , Andrew Morton , Linus Torvalds , "Woodhouse, David" 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 Wed, Apr 17, 2019 at 12:49:04PM -0700, Andy Lutomirski wrote: > I also proposed using a gcc plugin (or upstream gcc feature) to add > some instrumentation to any code that pops RSP to verify that the > resulting (unsigned) change in RSP is between 0 and THREAD_SIZE bytes. > This will make ROP quite a bit harder. I've been playing around with this for a bit, and hope to have something to post Soon :) Tycho _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel