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=-2.4 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,USER_AGENT_SANE_1 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 35CBBC43603 for ; Wed, 18 Dec 2019 12:46:36 +0000 (UTC) Received: from mother.openwall.net (mother.openwall.net [195.42.179.200]) by mail.kernel.org (Postfix) with SMTP id 868F12146E for ; Wed, 18 Dec 2019 12:46:35 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=alien8.de header.i=@alien8.de header.b="CObDVqos" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 868F12146E Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=alien8.de Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=kernel-hardening-return-17507-kernel-hardening=archiver.kernel.org@lists.openwall.com Received: (qmail 1624 invoked by uid 550); 18 Dec 2019 12:46:28 -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 1603 invoked from network); 18 Dec 2019 12:46:27 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=alien8.de; s=dkim; t=1576673170; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:in-reply-to:in-reply-to: references:references; bh=yXwLnW+PoY25pshD8Wq5cZaWHHz1WD1asE9i3LHbFgo=; b=CObDVqosp5y7Z8sELy68i2YofwvsnqQOrexIoHXuwx4iBrrN1Ec2LK/g2G2LFmAiahNTHg KIiIEFVVTQ/7/vwqbtJd3690sOFs622Qt+IGBBhv3TTl1kj/mGgkbqwxQazwVNQmuphqqd SBLhof85IDWs90nsRlzcY4JsHr0Bl6I= Date: Wed, 18 Dec 2019 13:46:04 +0100 From: Borislav Petkov To: Thomas Garnier Cc: kernel-hardening@lists.openwall.com, kristen@linux.intel.com, keescook@chromium.org, Herbert Xu , "David S. Miller" , Thomas Gleixner , Ingo Molnar , "H. Peter Anvin" , x86@kernel.org, linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v10 01/11] x86/crypto: Adapt assembly for PIE support Message-ID: <20191218124604.GE24886@zn.tnic> References: <20191205000957.112719-1-thgarnie@chromium.org> <20191205000957.112719-2-thgarnie@chromium.org> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20191205000957.112719-2-thgarnie@chromium.org> User-Agent: Mutt/1.10.1 (2018-07-13) On Wed, Dec 04, 2019 at 04:09:38PM -0800, Thomas Garnier wrote: > Change the assembly code to use only relative references of symbols for the > kernel to be PIE compatible. > > Position Independent Executable (PIE) support will allow to extend the > KASLR randomization range below 0xffffffff80000000. FFS, how many times do we have to talk about this auto-sprinkled sentence?! https://lkml.kernel.org/r/20190805163202.GD18785@zn.tnic -- Regards/Gruss, Boris. https://people.kernel.org/tglx/notes-about-netiquette