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=-0.9 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,URIBL_BLOCKED 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 53AC9C10F0B for ; Thu, 18 Apr 2019 08:12:34 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 23ADB214DA for ; Thu, 18 Apr 2019 08:12:34 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 23ADB214DA Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=bugs.launchpad.net Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([127.0.0.1]:37771 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hH29p-00052R-D4 for qemu-devel@archiver.kernel.org; Thu, 18 Apr 2019 04:12:33 -0400 Received: from eggs.gnu.org ([209.51.188.92]:42321) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hH28E-00044s-75 for qemu-devel@nongnu.org; Thu, 18 Apr 2019 04:10:55 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1hH28C-0008Fi-9m for qemu-devel@nongnu.org; Thu, 18 Apr 2019 04:10:54 -0400 Received: from indium.canonical.com ([91.189.90.7]:52606) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1hH28A-0008EW-Pw for qemu-devel@nongnu.org; Thu, 18 Apr 2019 04:10:52 -0400 Received: from loganberry.canonical.com ([91.189.90.37]) by indium.canonical.com with esmtp (Exim 4.86_2 #2 (Debian)) id 1hH289-0001tZ-0t for ; Thu, 18 Apr 2019 08:10:49 +0000 Received: from loganberry.canonical.com (localhost [127.0.0.1]) by loganberry.canonical.com (Postfix) with ESMTP id 0014B2E80C7 for ; Thu, 18 Apr 2019 08:10:48 +0000 (UTC) MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Date: Thu, 18 Apr 2019 08:03:27 -0000 From: Jakub Jermar <1825311@bugs.launchpad.net> To: qemu-devel@nongnu.org X-Launchpad-Notification-Type: bug X-Launchpad-Bug: product=qemu; status=New; importance=Undecided; assignee=None; X-Launchpad-Bug-Information-Type: Public X-Launchpad-Bug-Private: no X-Launchpad-Bug-Security-Vulnerability: no X-Launchpad-Bug-Commenters: jakub X-Launchpad-Bug-Reporter: Jakub Jermar (jakub) X-Launchpad-Bug-Modifier: Jakub Jermar (jakub) Message-Id: <155557460746.17507.17649109204793492383.malonedeb@soybean.canonical.com> X-Launchpad-Message-Rationale: Subscriber (QEMU) @qemu-devel-ml X-Launchpad-Message-For: qemu-devel-ml Precedence: bulk X-Generated-By: Launchpad (canonical.com); Revision="18928"; Instance="launchpad-lazr.conf" X-Launchpad-Hash: 61e179ac03782b0a8f99edcd48f2b34d2e01202a X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 91.189.90.7 Subject: [Qemu-devel] [Bug 1825311] [NEW] mips_cpu_handle_mmu_fault renders all accessed pages executable X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: Bug 1825311 <1825311@bugs.launchpad.net> Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Message-ID: <20190418080327.xYmWKxBRumwSkqBaAWy28VuN_9nQU--NaPk7LiQm3W0@z> Public bug reported: On MIPS, data accesses to pages mapped in the TLB result in mips_cpu_handle_mmu_fault() marking the page unconditionally executable, even if the TLB entry has the XI bit set. Later on, when there is an attempt to execute this page, no exception is generated, even though TLBXI is expected. ** Affects: qemu Importance: Undecided Status: New -- = You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/1825311 Title: mips_cpu_handle_mmu_fault renders all accessed pages executable Status in QEMU: New Bug description: On MIPS, data accesses to pages mapped in the TLB result in mips_cpu_handle_mmu_fault() marking the page unconditionally executable, even if the TLB entry has the XI bit set. Later on, when there is an attempt to execute this page, no exception is generated, even though TLBXI is expected. To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1825311/+subscriptions