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=-11.3 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_GIT,USER_IN_DEF_DKIM_WL 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 33B2AC433DF for ; Thu, 18 Jun 2020 07:11:36 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 13E1921548 for ; Thu, 18 Jun 2020 07:11:36 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=linux.microsoft.com header.i=@linux.microsoft.com header.b="aG83qxYX" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728010AbgFRHLK (ORCPT ); Thu, 18 Jun 2020 03:11:10 -0400 Received: from linux.microsoft.com ([13.77.154.182]:60552 "EHLO linux.microsoft.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727979AbgFRHLK (ORCPT ); Thu, 18 Jun 2020 03:11:10 -0400 Received: from prsriva-linux.hsd1.wa.comcast.net (c-24-19-135-168.hsd1.wa.comcast.net [24.19.135.168]) by linux.microsoft.com (Postfix) with ESMTPSA id 8918F20B4781; Thu, 18 Jun 2020 00:11:08 -0700 (PDT) DKIM-Filter: OpenDKIM Filter v2.11.0 linux.microsoft.com 8918F20B4781 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.microsoft.com; s=default; t=1592464269; bh=lDSc0jJUTA/sW6q8KjNuhbmPa1VR7NZJ8pXu5G8PT78=; h=From:To:Cc:Subject:Date:From; b=aG83qxYXRNhqUmLDNYpbm33MDP2wZSL6QKrD2jzlLiNColOuwrb8FqAsVDhwxeIUj F6PyyYZeZsLvmO03Jk+E0IfjD1E+TJlD0wQIkfoT4XYzNzULxLkKcEFezwju6U+yNW CQB9TkUkQuhmLmJNPl9ot4OJOFtVYYPbjejsJWrw= From: Prakhar Srivastava To: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, devicetree@vger.kernel.org, linux-integrity@vger.kernel.org, linux-security-module@vger.kernel.org Cc: catalin.marinas@arm.com, will@kernel.org, mpe@ellerman.id.au, benh@kernel.crashing.org, paulus@samba.org, robh+dt@kernel.org, frowand.list@gmail.com, zohar@linux.ibm.com, dmitry.kasatkin@gmail.com, jmorris@namei.org, serge@hallyn.com, pasha.tatashin@soleen.com, allison@lohutok.net, kstewart@linuxfoundation.org, takahiro.akashi@linaro.org, tglx@linutronix.de, vincenzo.frascino@arm.com, mark.rutland@arm.com, masahiroy@kernel.org, james.morse@arm.com, bhsharma@redhat.com, mbrugger@suse.com, hsinyi@chromium.org, tao.li@vivo.com, christophe.leroy@c-s.fr, gregkh@linuxfoundation.org, nramas@linux.microsoft.com, prsriva@linux.microsoft.com, tusharsu@linux.microsoft.com, balajib@linux.microsoft.com Subject: [V2 PATCH 0/3] Adding support for carrying IMA measurement logs Date: Thu, 18 Jun 2020 00:10:42 -0700 Message-Id: <20200618071045.471131-1-prsriva@linux.microsoft.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: owner-linux-security-module@vger.kernel.org Precedence: bulk List-ID: Integrgity Measurement Architecture(IMA) during kexec(kexec file load) verifies the kernel signature and measures the signature of the kernel. The signature in the measuremnt logs is used to verfiy the authenticity of the kernel in the subsequent kexec'd session, however in the current implementation IMA measurement logs are not carried over thus remote attesation cannot verify the signature of the running kernel. Adding support to arm64 to carry over the IMA measurement logs over kexec. Add a new chosen node entry linux,ima-kexec-buffer to hold the address and the size of the memory reserved to carry the IMA measurement log. Refactor existing powerpc code to be used by amr64 as well. Changelog: v2: Break patches into separate patches. - Powerpc related Refactoring - Updating the docuemntation for chosen node - Updating arm64 to support IMA buffer pass v1: Refactoring carrying over IMA measuremnet logs over Kexec. This patch moves the non-architecture specific code out of powerpc and adds to security/ima.(Suggested by Thiago) Add Documentation regarding the ima-kexec-buffer node in the chosen node documentation v0: Add a layer of abstraction to use the memory reserved by device tree for ima buffer pass. Add support for ima buffer pass using reserved memory for arm64 kexec. Update the arch sepcific code path in kexec file load to store the ima buffer in the reserved memory. The same reserved memory is read on kexec or cold boot. Prakhar Srivastava (3): Refactoring powerpc code for carrying over IMA measurement logs, to move non architecture specific code to security/ima. dt-bindings: chosen: Document ima-kexec-buffer carrying over IMA measuremnt logs over kexec. Add support for arm64 to carry over IMA measurement logs Documentation/devicetree/bindings/chosen.txt | 17 +++ arch/arm64/Kconfig | 1 + arch/arm64/include/asm/ima.h | 17 +++ arch/arm64/include/asm/kexec.h | 3 + arch/arm64/kernel/machine_kexec_file.c | 47 +++++-- arch/powerpc/include/asm/ima.h | 10 -- arch/powerpc/kexec/ima.c | 126 ++----------------- security/integrity/ima/ima_kexec.c | 116 +++++++++++++++++ 8 files changed, 201 insertions(+), 136 deletions(-) create mode 100644 arch/arm64/include/asm/ima.h -- 2.25.1