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 17A5DC10F0E for ; Mon, 15 Apr 2019 23:51:47 +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 DDBDB206B7 for ; Mon, 15 Apr 2019 23:51:46 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org DDBDB206B7 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=canonical.com 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]:56888 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hGBO5-0007EY-Lj for qemu-devel@archiver.kernel.org; Mon, 15 Apr 2019 19:51:45 -0400 Received: from eggs.gnu.org ([209.51.188.92]:56828) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hGBNB-0006v8-SP for qemu-devel@nongnu.org; Mon, 15 Apr 2019 19:50:51 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1hGBNA-0000eK-Nt for qemu-devel@nongnu.org; Mon, 15 Apr 2019 19:50:49 -0400 Received: from indium.canonical.com ([91.189.90.7]:58266) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1hGBNA-0000du-Fm for qemu-devel@nongnu.org; Mon, 15 Apr 2019 19:50:48 -0400 Received: from loganberry.canonical.com ([91.189.90.37]) by indium.canonical.com with esmtp (Exim 4.86_2 #2 (Debian)) id 1hGBN8-0001L4-FN for ; Mon, 15 Apr 2019 23:50:46 +0000 Received: from loganberry.canonical.com (localhost [127.0.0.1]) by loganberry.canonical.com (Postfix) with ESMTP id 3941B2E80D0 for ; Mon, 15 Apr 2019 23:50:46 +0000 (UTC) MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Date: Mon, 15 Apr 2019 23:37:35 -0000 From: dann frazier To: qemu-devel@nongnu.org X-Launchpad-Notification-Type: bug X-Launchpad-Bug: product=qemu; status=Confirmed; importance=Undecided; assignee=None; X-Launchpad-Bug-Tags: qemu-img X-Launchpad-Bug-Information-Type: Public X-Launchpad-Bug-Private: no X-Launchpad-Bug-Security-Vulnerability: no X-Launchpad-Bug-Commenters: dannf jnsnow lizhengui X-Launchpad-Bug-Reporter: dann frazier (dannf) X-Launchpad-Bug-Modifier: dann frazier (dannf) References: <154327283728.15443.11625169757714443608.malonedeb@soybean.canonical.com> Message-Id: <155537145507.8029.1840224232753740746.malone@wampee.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="18920"; Instance="launchpad-lazr.conf" X-Launchpad-Hash: 1307a4adc94094cddc1fda28d7832a7ab62f7b61 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 1805256] Re: qemu-img hangs on high core count ARM system 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 1805256 <1805256@bugs.launchpad.net> Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Message-ID: <20190415233735.1Ap97RuzodF7t3ltb5_vSsAAkzd8tIzVOFnDE4iRS78@z> No, sorry - this bugs still persists w/ latest upstream (@ afccfc0). I found a report of similar symptoms: https://patchwork.kernel.org/patch/10047341/ https://bugzilla.redhat.com/show_bug.cgi?id=3D1524770#c13 To be clear, ^ is already fixed upstream, so it is not the *same* issue - but perhaps related. ** Bug watch added: Red Hat Bugzilla #1524770 https://bugzilla.redhat.com/show_bug.cgi?id=3D1524770 -- = You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/1805256 Title: qemu-img hangs on high core count ARM system Status in QEMU: Confirmed Bug description: On the HiSilicon D06 system - a 96 core NUMA arm64 box - qemu-img frequently hangs (~50% of the time) with this command: qemu-img convert -f qcow2 -O qcow2 /tmp/cloudimg /tmp/cloudimg2 Where "cloudimg" is a standard qcow2 Ubuntu cloud image. This qcow2->qcow2 conversion happens to be something uvtool does every time it fetches images. Once hung, attaching gdb gives the following backtrace: (gdb) bt #0 0x0000ffffae4f8154 in __GI_ppoll (fds=3D0xaaaae8a67dc0, nfds=3D187650= 274213760, = timeout=3D, timeout@entry=3D0x0, sigmask=3D0xffffc123b= 950) at ../sysdeps/unix/sysv/linux/ppoll.c:39 #1 0x0000aaaabbefaf00 in ppoll (__ss=3D0x0, __timeout=3D0x0, __nfds=3D, = __fds=3D) at /usr/include/aarch64-linux-gnu/bits/poll2= .h:77 #2 qemu_poll_ns (fds=3D, nfds=3D, = timeout=3Dtimeout@entry=3D-1) at util/qemu-timer.c:322 #3 0x0000aaaabbefbf80 in os_host_main_loop_wait (timeout=3D-1) at util/main-loop.c:233 #4 main_loop_wait (nonblocking=3D) at util/main-loop.c:497 #5 0x0000aaaabbe2aa30 in convert_do_copy (s=3D0xffffc123bb58) at qemu-im= g.c:1980 #6 img_convert (argc=3D, argv=3D) at qemu-= img.c:2456 #7 0x0000aaaabbe2333c in main (argc=3D7, argv=3D) at qemu= -img.c:4975 Reproduced w/ latest QEMU git (@ 53744e0a182) To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1805256/+subscriptions