From patchwork Fri Nov 8 17:12:42 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Brown X-Patchwork-Id: 11235297 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id C251E1747 for ; Fri, 8 Nov 2019 17:12:53 +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 9FEEE20673 for ; Fri, 8 Nov 2019 17:12:53 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="mPlGX8Se"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=sirena.org.uk header.i=@sirena.org.uk header.b="TLe24R6l" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 9FEEE20673 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.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:Message-Id:Date:Subject:To :From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=Emr5nrm400MXWQnArq+0Mj+Ig8LxYzAV5H/1dcwdm08=; b=mPlGX8Se52tQF3 qT0fUvBy+xwbOmKw2qXFaTQejna7unD9W5NCJ/AtiUDgoKRpFivIBYrzTs37wXg4Gr1fs6D9F8qmo VWWWOXrTWfClIWA0DXoeq8diQoQ2RS4ej8zn6Qyscj8ffiS9EcRr7O4Hyb1gRoU9SwEyaHvNoxZsd SBab2IyXYRQM7cew01LljQpcbrLDB540tWaTgFDLsKJmVglkO7xYyvEjkIn0b/QBfKSpCvFkV3AW5 mAK4sqoS1wbiMMVUQbNkohTL+Ul7uDWdJIwUChuv27dfExf1ITd35GdKH9NnEhMOhCe2LFndl05GM R+rxvoO4wYHMqqS9pR1Q==; 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 1iT7oY-0004YT-Hu; Fri, 08 Nov 2019 17:12:50 +0000 Received: from heliosphere.sirena.org.uk ([172.104.155.198]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1iT7oW-0004X8-Cn for linux-arm-kernel@lists.infradead.org; Fri, 08 Nov 2019 17:12:49 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=sirena.org.uk; s=20170815-heliosphere; h=Content-Transfer-Encoding: MIME-Version:Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To:Content-Type: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References:List-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=5t3aCnp4aTornyUqAhXLqPxQM6ip0uGUbLJYR2Z4rBs=; b=TLe24R6luQBf/fTFfkXgbzxbU Q7e85mwvs2dBre3Qta35IFj5HYp8iANwY2qlND8FyRXJMU1gZPDViOFHjfBzk6tTSK9EunzuTu9Fz a1yZoxDLLnD8PfKgXwA67Rrqh1h2PuKEoYGS8dfqPzsWADtMxtYnL0oM/XSdhvUSnNr6g=; Received: from cpc102320-sgyl38-2-0-cust46.18-2.cable.virginm.net ([82.37.168.47] helo=ypsilon.sirena.org.uk) by heliosphere.sirena.org.uk with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1iT7oU-0007lW-Ia; Fri, 08 Nov 2019 17:12:46 +0000 Received: by ypsilon.sirena.org.uk (Postfix, from userid 1000) id AE4EB2741460; Fri, 8 Nov 2019 17:12:45 +0000 (GMT) From: Mark Brown To: Catalin Marinas , Will Deacon , Mark Rutland Subject: [PATCH v4 0/2] Improve KASLR diagnostics Date: Fri, 8 Nov 2019 17:12:42 +0000 Message-Id: <20191108171244.48781-1-broonie@kernel.org> X-Mailer: git-send-email 2.20.1 MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20191108_091248_435445_FEB16332 X-CRM114-Status: UNSURE ( 7.40 ) X-CRM114-Notice: Please train this message. X-Spam-Score: 0.2 (/) X-Spam-Report: SpamAssassin version 3.4.2 on bombadil.infradead.org summary: Content analysis details: (0.2 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at https://www.dnswl.org/, no trust [172.104.155.198 listed in list.dnswl.org] 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.0 SPF_PASS SPF: sender matches SPF record 0.2 HEADER_FROM_DIFFERENT_DOMAINS From and EnvelopeFrom 2nd level mail domains are different -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid 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 Brown , linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org This series provides diagnostics on boot for KASLR to improve usability at runtime. v4: Make kaslr_status static __initdata rather than __ro_after_init. v3: Still mask the seed from FDT when disabling from the command line. v2: Defer the print to a core_initcall() so we don't try and print before printk() can cope, covering other less common error cases as well and also an explicit message when KASLR is enabled. Mark Brown (2): arm64: kaslr: Announce KASLR status on boot arm64: kaslr: Check command line before looking for a seed arch/arm64/kernel/kaslr.c | 44 +++++++++++++++++++++++++++++++++++---- 1 file changed, 40 insertions(+), 4 deletions(-)