From patchwork Thu Dec 1 20:56:26 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jarkko Sakkinen X-Patchwork-Id: 9456893 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 3D69960585 for ; Thu, 1 Dec 2016 20:56:52 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 3187728492 for ; Thu, 1 Dec 2016 20:56:52 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 2643C2852E; Thu, 1 Dec 2016 20:56:52 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.9 required=2.0 tests=BAYES_00, RCVD_IN_DNSWL_NONE autolearn=ham version=3.3.1 Received: from ml01.01.org (ml01.01.org [198.145.21.10]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id CC3E328492 for ; Thu, 1 Dec 2016 20:56:51 +0000 (UTC) Received: from [127.0.0.1] (localhost [IPv6:::1]) by ml01.01.org (Postfix) with ESMTP id D915081F1C for ; Thu, 1 Dec 2016 12:56:51 -0800 (PST) X-Original-To: intel-sgx-kernel-dev@lists.01.org Delivered-To: intel-sgx-kernel-dev@lists.01.org Received: from mga03.intel.com (mga03.intel.com [134.134.136.65]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ml01.01.org (Postfix) with ESMTPS id EEDAE81F1C for ; Thu, 1 Dec 2016 12:56:50 -0800 (PST) Received: from fmsmga005.fm.intel.com ([10.253.24.32]) by orsmga103.jf.intel.com with ESMTP; 01 Dec 2016 12:56:50 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.33,726,1477983600"; d="scan'208";a="37942348" Received: from wmcsween-mobl.ger.corp.intel.com (HELO localhost) ([10.252.12.30]) by fmsmga005.fm.intel.com with ESMTP; 01 Dec 2016 12:56:49 -0800 From: Jarkko Sakkinen To: intel-sgx-kernel-dev@lists.01.org Date: Thu, 1 Dec 2016 22:56:26 +0200 Message-Id: <20161201205632.8593-3-jarkko.sakkinen@linux.intel.com> X-Mailer: git-send-email 2.9.3 In-Reply-To: <20161201205632.8593-1-jarkko.sakkinen@linux.intel.com> References: <20161201205632.8593-1-jarkko.sakkinen@linux.intel.com> Subject: [intel-sgx-kernel-dev] [PATCH v4 2/8] intel_sgx: fix null pointer deref in sgx_invalidate() X-BeenThere: intel-sgx-kernel-dev@lists.01.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: "Project: Intel® Software Guard Extensions for Linux*: https://01.org/intel-software-guard-extensions" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: intel-sgx-kernel-dev-bounces@lists.01.org Sender: "intel-sgx-kernel-dev" X-Virus-Scanned: ClamAV using ClamSMTP Signed-off-by: Jarkko Sakkinen --- drivers/platform/x86/intel_sgx_util.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/platform/x86/intel_sgx_util.c b/drivers/platform/x86/intel_sgx_util.c index d1c4c71..3878d9a 100644 --- a/drivers/platform/x86/intel_sgx_util.c +++ b/drivers/platform/x86/intel_sgx_util.c @@ -173,6 +173,8 @@ void sgx_invalidate(struct sgx_encl *encl) vma = sgx_find_vma(encl, addr); if (vma) sgx_zap_tcs_ptes(encl, vma); + else + break; } encl->vma_cnt = 0;