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=-3.8 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 36376C433E1 for ; Sat, 22 Aug 2020 10:56:13 +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 032B42075E for ; Sat, 22 Aug 2020 10:56:12 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 032B42075E 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]:51124 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1k9RC0-0006qT-8X for qemu-devel@archiver.kernel.org; Sat, 22 Aug 2020 06:56:12 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:53848) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1k9RBT-0006Rc-3b for qemu-devel@nongnu.org; Sat, 22 Aug 2020 06:55:39 -0400 Received: from indium.canonical.com ([91.189.90.7]:59330) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1k9RBR-0006tL-25 for qemu-devel@nongnu.org; Sat, 22 Aug 2020 06:55:38 -0400 Received: from loganberry.canonical.com ([91.189.90.37]) by indium.canonical.com with esmtp (Exim 4.86_2 #2 (Debian)) id 1k9RBO-0007f4-VS for ; Sat, 22 Aug 2020 10:55:34 +0000 Received: from loganberry.canonical.com (localhost [127.0.0.1]) by loganberry.canonical.com (Postfix) with ESMTP id D52FE2E80E8 for ; Sat, 22 Aug 2020 10:55:34 +0000 (UTC) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Date: Sat, 22 Aug 2020 10:50:31 -0000 From: Laurent Vivier <1892540@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: gson laurent-vivier X-Launchpad-Bug-Reporter: Andreas Gustafsson (gson) X-Launchpad-Bug-Modifier: Laurent Vivier (laurent-vivier) References: <159803735569.2614.10182276398047269277.malonedeb@chaenomeles.canonical.com> Message-Id: <159809343168.1469.8860649860654872674.malone@wampee.canonical.com> Subject: [Bug 1892540] Re: qemu can no longer boot NetBSD/sparc 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="99c2d833c8d727fd05148486920aca032e908071"; Instance="production" X-Launchpad-Hash: f5072ec17436d49e872e4220076454019f9e6699 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 = 2020/08/22 06:55:35 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, URIBL_BLOCKED=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 1892540 <1892540@bugs.launchpad.net> Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" This happens because openbios accesses unassigned memory during the SBus scan: Probing SBus slot 0 offset 0 invalid accepts: (null) addr 20000000 size: 1 Probing SBus slot 1 offset 0 invalid accepts: (null) addr 30000000 size: 1 Probing SBus slot 2 offset 0 invalid accepts: (null) addr 40000000 size: 1 Probing SBus slot 3 offset 0 Probing SBus slot 4 offset 0 invalid accepts: (null) addr 60000000 size: 1 Probing SBus slot 5 offset 0 Thread 4 "qemu-system-spa" hit Breakpoint 1, memory_region_access_valid (mr= =3D0x555555df20c0 , = addr=3D536870912, size=3D1, is_write=3D, attrs=3D...) at .../softmmu/memory.c:1358 1358 return false; (gdb) list 1355 if (mr->ops->valid.accepts 1356 && !mr->ops->valid.accepts(mr->opaque, addr, size, is_write, a= ttrs)) { 1357 fprintf(stderr, "invalid accepts: %s addr %"PRIx64 " size: %d= \n", mr->name, addr, size); 1358 return false; 1359 } (gdb) p mr->ops->valid.accepts $1 =3D (_Bool (*)(void *, hwaddr, unsigned int, _Bool, MemTxAttrs)) 0x55555= 5736f10 (gdb) list unassigned_mem_accepts 1271 1272 static bool unassigned_mem_accepts(void *opaque, hwaddr addr, 1273 unsigned size, bool is_write, 1274 MemTxAttrs attrs) 1275 { 1276 return false; 1277 } -- = You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/1892540 Title: qemu can no longer boot NetBSD/sparc Status in QEMU: New Bug description: Booting NetBSD/sparc in qemu no longer works. It broke between qemu version 5.0.0 and 5.1.0, and a bisection identified the following as the offending commit: [5d971f9e672507210e77d020d89e0e89165c8fc9] memory: Revert "memory: accept mismatching sizes in memory_region_access_valid" It's still broken as of 7fd51e68c34fcefdb4d6fd646ed3346f780f89f4. To reproduce, run wget http://ftp.netbsd.org/pub/NetBSD/NetBSD-9.0/images/NetBSD-9.0-spar= c.iso qemu-system-sparc -nographic -cdrom NetBSD-9.0-sparc.iso -boot d The expected behavior is that the guest boots to the prompt Installation medium to load the additional utilities from: The observed behavior is a panic: [ 1.0000050] system[0]: trap 0x29: pc=3D0xf0046b14 sfsr=3D0xb6 sfva= =3D0x54000000 [ 1.0000050] cpu0: data fault: pc=3D0xf0046b14 addr=3D0x54000000 sfsr= =3D0xb6 [ 1.0000050] panic: kernel fault [ 1.0000050] halted To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1892540/+subscriptions