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=-4.0 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED 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 9E759C433E1 for ; Thu, 23 Jul 2020 20:51:39 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (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 6F928206E3 for ; Thu, 23 Jul 2020 20:51:39 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 6F928206E3 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 ([::1]:36984 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jyiBm-0005t6-IR for qemu-devel@archiver.kernel.org; Thu, 23 Jul 2020 16:51:38 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:59534) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jyiAr-0005Ez-PS for qemu-devel@nongnu.org; Thu, 23 Jul 2020 16:50:41 -0400 Received: from indium.canonical.com ([91.189.90.7]:38432) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1jyiAp-0004HM-MZ for qemu-devel@nongnu.org; Thu, 23 Jul 2020 16:50:41 -0400 Received: from loganberry.canonical.com ([91.189.90.37]) by indium.canonical.com with esmtp (Exim 4.86_2 #2 (Debian)) id 1jyiAn-0004By-Lo for ; Thu, 23 Jul 2020 20:50:37 +0000 Received: from loganberry.canonical.com (localhost [127.0.0.1]) by loganberry.canonical.com (Postfix) with ESMTP id 964F82E80DB for ; Thu, 23 Jul 2020 20:50:37 +0000 (UTC) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Date: Thu, 23 Jul 2020 20:43:48 -0000 From: John Paul Adrian Glaubitz <1888728@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: glaubitz X-Launchpad-Bug-Reporter: John Paul Adrian Glaubitz (glaubitz) X-Launchpad-Bug-Modifier: John Paul Adrian Glaubitz (glaubitz) Message-Id: <159553702814.22838.6923926594516590974.malonedeb@soybean.canonical.com> Subject: [Bug 1888728] [NEW] Bare chroot in linux-user fails with pgb_reserved_va: Assertion `guest_base != 0' failed. 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="f877c5162b568393e2d07ce948459ba0abc456fe"; Instance="production-secrets-lazr.conf" X-Launchpad-Hash: 75a5eb09e9c1591f591f33cd67aff5b476562a6d Received-SPF: none client-ip=91.189.90.7; envelope-from=bounces@canonical.com; helo=indium.canonical.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/07/23 16:50:38 X-ACL-Warn: Detected OS = Linux 3.11 and newer [fuzzy] X-Spam_score_int: -58 X-Spam_score: -5.9 X-Spam_bar: ----- X-Spam_report: (-5.9 / 5.0 requ) BAYES_00=-1.9, HEADER_FROM_DIFFERENT_DOMAINS=1, RCVD_IN_DNSWL_HI=-5, RCVD_IN_MSPIKE_H3=-0.01, RCVD_IN_MSPIKE_WL=-0.01, SPF_HELO_NONE=0.001, SPF_NONE=0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: Bug 1888728 <1888728@bugs.launchpad.net> Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Public bug reported: Trying to run a bare chroot with no additional bind mounts fails on git master (8ffa52c20d5693d454f65f2024a1494edfea65d4) with: root@nofan:~/qemu> chroot /local_scratch/sid-m68k-sbuild/ qemu-m68k-static: /root/qemu/linux-user/elfload.c:2315: pgb_reserved_va: As= sertion `guest_base !=3D 0' failed. Aborted root@nofan:~/qemu> The problem can be worked around by bind-mounting /proc from the host system into the target chroot: root@nofan:~/qemu> mount -o bind /proc/ /local_scratch/sid-m68k-sbuild/proc/ root@nofan:~/qemu> chroot /local_scratch/sid-m68k-sbuild/ bash: warning: setlocale: LC_ALL: cannot change locale (en_US.UTF-8) (sid-m68k-sbuild)root@nofan:/# Host system is an up-to-date Debian unstable (2020-07-23). I have not been able to bisect the issue yet since there is another annoying linux-user bug (virtual memory exhaustion) that was somewhere introduced and fixed between v5.0.0 and HEAD and overshadows the original Assertion failure bug. ** 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/1888728 Title: Bare chroot in linux-user fails with pgb_reserved_va: Assertion `guest_base !=3D 0' failed. Status in QEMU: New Bug description: Trying to run a bare chroot with no additional bind mounts fails on git master (8ffa52c20d5693d454f65f2024a1494edfea65d4) with: root@nofan:~/qemu> chroot /local_scratch/sid-m68k-sbuild/ qemu-m68k-static: /root/qemu/linux-user/elfload.c:2315: pgb_reserved_va: = Assertion `guest_base !=3D 0' failed. Aborted root@nofan:~/qemu> The problem can be worked around by bind-mounting /proc from the host system into the target chroot: root@nofan:~/qemu> mount -o bind /proc/ /local_scratch/sid-m68k-sbuild/pr= oc/ root@nofan:~/qemu> chroot /local_scratch/sid-m68k-sbuild/ bash: warning: setlocale: LC_ALL: cannot change locale (en_US.UTF-8) (sid-m68k-sbuild)root@nofan:/# Host system is an up-to-date Debian unstable (2020-07-23). I have not been able to bisect the issue yet since there is another annoying linux-user bug (virtual memory exhaustion) that was somewhere introduced and fixed between v5.0.0 and HEAD and overshadows the original Assertion failure bug. 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