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 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 ACCC2C433B4 for ; Fri, 30 Apr 2021 18:18:25 +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 E1FF0613D9 for ; Fri, 30 Apr 2021 18:18:24 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org E1FF0613D9 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]:37192 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lcXiZ-0007B5-QG for qemu-devel@archiver.kernel.org; Fri, 30 Apr 2021 14:18:23 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:49844) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lcXRr-0006Ba-0m for qemu-devel@nongnu.org; Fri, 30 Apr 2021 14:01:08 -0400 Received: from indium.canonical.com ([91.189.90.7]:57156) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1lcXRl-0001Bf-4U for qemu-devel@nongnu.org; Fri, 30 Apr 2021 14:01:06 -0400 Received: from loganberry.canonical.com ([91.189.90.37]) by indium.canonical.com with esmtp (Exim 4.86_2 #2 (Debian)) id 1lcXRh-0004HS-9H for ; Fri, 30 Apr 2021 18:00:57 +0000 Received: from loganberry.canonical.com (localhost [127.0.0.1]) by loganberry.canonical.com (Postfix) with ESMTP id 452CC2E8144 for ; Fri, 30 Apr 2021 18:00:57 +0000 (UTC) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Date: Fri, 30 Apr 2021 17:51:01 -0000 From: Peter Maydell <1926759@bugs.launchpad.net> To: qemu-devel@nongnu.org X-Launchpad-Notification-Type: bug X-Launchpad-Bug: product=qemu; status=In Progress; importance=Undecided; assignee=None; X-Launchpad-Bug-Tags: arm X-Launchpad-Bug-Information-Type: Public X-Launchpad-Bug-Private: no X-Launchpad-Bug-Security-Vulnerability: no X-Launchpad-Bug-Commenters: muhui pmaydell X-Launchpad-Bug-Reporter: JIANG Muhui (muhui) X-Launchpad-Bug-Modifier: Peter Maydell (pmaydell) References: <161978229375.10342.16262082750544447119.malonedeb@gac.canonical.com> Message-Id: <161980506112.13968.11946927891491623980.malone@wampee.canonical.com> Subject: [Bug 1926759] Re: WFI instruction results in unhandled CPU exception 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="02afa4875ac52c169f5cddf0d1bcdd6e149a3754"; Instance="production" X-Launchpad-Hash: bf70ad566cb624755419add988b186fe42094df5 Received-SPF: none client-ip=91.189.90.7; envelope-from=bounces@canonical.com; helo=indium.canonical.com X-Spam_score_int: -65 X-Spam_score: -6.6 X-Spam_bar: ------ X-Spam_report: (-6.6 / 5.0 requ) BAYES_00=-1.9, HEADER_FROM_DIFFERENT_DOMAINS=0.25, RCVD_IN_DNSWL_HI=-5, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, 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 1926759 <1926759@bugs.launchpad.net> Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Should be fixed by: https://patchew.org/QEMU/20210430162212.825-1-peter.maydell@linaro.org/ ** Changed in: qemu Status: Confirmed =3D> Won't Fix ** Changed in: qemu Status: Won't Fix =3D> In Progress -- = You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/1926759 Title: WFI instruction results in unhandled CPU exception Status in QEMU: In Progress Bug description: Hi I refer to the WFI instruction. The bytecode is 0xe320f003. After the execution, qemu exit with the following crash log. qemu: unhandled CPU exception 0x10001 - aborting R00=3D00000001 R01=3D40800b34 R02=3D40800b3c R03=3D000102ec R04=3D00010a28 R05=3D00010158 R06=3D00087460 R07=3D00010158 R08=3D00000000 R09=3D00000000 R10=3D00085b7c R11=3D408009f4 R12=3D40800a08 R13=3D408009f0 R14=3D0001057c R15=3D000102f8 PSR=3D60000010 -ZC- A usr32 qemu:handle_cpu_signal received signal outside vCPU context @ pc=3D0x7f5c= 21d0fa12 WFI aims to enter a low-power state and wait for interrupt. The raised exception seems not a right behavior. I can provide a testcase if you needed. Many thanks. Regards Muhui To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1926759/+subscriptions