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=-7.4 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 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 C9255C282DD for ; Thu, 9 Jan 2020 18:45:48 +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 9118F20678 for ; Thu, 9 Jan 2020 18:45:48 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="MTmZEDRd" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 9118F20678 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:36278 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1ipcoV-00075J-MC for qemu-devel@archiver.kernel.org; Thu, 09 Jan 2020 13:45:47 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:51710) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1ipcnb-0006eI-LP for qemu-devel@nongnu.org; Thu, 09 Jan 2020 13:44:52 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ipcnZ-0001qD-5I for qemu-devel@nongnu.org; Thu, 09 Jan 2020 13:44:50 -0500 Received: from us-smtp-delivery-1.mimecast.com ([207.211.31.120]:29691 helo=us-smtp-1.mimecast.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1ipcnY-0001iz-Lr for qemu-devel@nongnu.org; Thu, 09 Jan 2020 13:44:49 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1578595487; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=T2yQJ0aIXq3Jo/D787D4QPXtK6GPb4i0EFc8e15p+ag=; b=MTmZEDRdw5fLYE1v8B27kQmeDWLhqwyJNDqPiaN1Bos0QbdxZFcV+z37YSybazd7qle8gm wfJ5T/KXUB2Kk0b/haPYnN5sPEeJzvtWsiO8HyVX3EXoWBVmgSvtzSFsQk9i/DnDKfg0g/ k1oXAxcQb3DvE+C90UG60DJFJy2zGsg= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-179-oNFym2VNPJaMdaxwgK-SwQ-1; Thu, 09 Jan 2020 13:44:44 -0500 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 61E5610054E3; Thu, 9 Jan 2020 18:44:43 +0000 (UTC) Received: from work-vm (unknown [10.36.118.29]) by smtp.corp.redhat.com (Postfix) with ESMTPS id ACC8C60FC2; Thu, 9 Jan 2020 18:44:42 +0000 (UTC) Date: Thu, 9 Jan 2020 18:44:40 +0000 From: "Dr. David Alan Gilbert" To: Peter Lieven Subject: Re: qemu-4.0.1: vhost_region_add_section:Section rounded to 0 prior to previous a0000 Message-ID: <20200109184440.GR6795@work-vm> References: <985fea06-ede6-dcb7-8829-a48a9416bc09@kamp.de> <20200108150458.GC3184@work-vm> MIME-Version: 1.0 In-Reply-To: User-Agent: Mutt/1.13.0 (2019-11-30) X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 X-MC-Unique: oNFym2VNPJaMdaxwgK-SwQ-1 X-Mimecast-Spam-Score: 0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable Content-Disposition: inline X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 207.211.31.120 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: "qemu-devel@nongnu.org" Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" * Peter Lieven (pl@kamp.de) wrote: > Am 08.01.20 um 16:04 schrieb Dr. David Alan Gilbert: > > * Peter Lieven (pl@kamp.de) wrote: > > > Hi, > > >=20 > > >=20 > > > I have a Qemu 4.0.1 machine with vhost-net network adapter, thats pol= luting the log with the above message. > > >=20 > > > Is this something known? Googling revealed the following patch in Nem= u (with seems to be a Qemu fork from Intel): > > >=20 > > > https://github.com/intel/nemu/commit/03940ded7f5370ce7492c619dccced11= 4ef7f56e > > >=20 > > >=20 > > > The network stopped functioning. After a live-migration the vServer i= s reachable again. > > >=20 > > >=20 > > > Any ideas? > > What guest are you running and what does your qemu commandline look > > like? >=20 >=20 > Its running debian9. We have hundreds of other VMs with identical setup. = Do not know why this one makes trouble. Could you extract an 'info mtree' from it - particularly the 'address-space: memory' near the top. > Here is the cmdline: >=20 >=20 > /usr/bin/qemu-4.0.0=A0 -enable-kvm=A0 -M pc-i440fx-2.9=A0 -nodefaults -ne= tdev > type=3Dtap,id=3Dguest0,script=3Dno,downscript=3Dno,ifname=3Dtap0,vhost=3D= on,vnet_hdr=3Don > -device virtio-net-pci,netdev=3Dguest0,mac=3D52:54:00:80:07:bc -iscsi > initiator-name=3Diqn.2005-03.org.virtual-core:0025b51f006c,timeout=3D30 -= object > rng-random,filename=3D/dev/urandom,id=3Drng0 -device > virtio-rng-pci,rng=3Drng0,max-bytes=3D65536,period=3D1000=A0 -drive forma= t=3Draw,discard=3Don,detect-zeroes=3Doff,file=3DXXX,if=3Dnone,cache=3Dwrite= back,aio=3Dnative,id=3Ddisk0 > -device virtio-scsi-pci=A0 -device scsi-hd,drive=3Ddisk0=A0 -serial null= =A0 > -parallel null=A0 -m 1024,slots=3D16,maxmem=3D393216M=A0 -smp > 1,sockets=3D64,cores=3D1,threads=3D1,maxcpus=3D64=A0 -monitor > tcp:0:4001,server,nowait,nodelay -vnc :1 -qmp > tcp:0:3001,server,nowait,nodelay=A0 -name 'debian9'=A0 -drive > index=3D2,media=3Dcdrom,if=3Dide,aio=3Dnative,readonly=3Don=A0 -boot orde= r=3Dc,menu=3Doff=A0 > -k de=A0 -pidfile /var/run/qemu/vm-5182.pid -mem-path /hugepages=A0 > -mem-prealloc=A0 -cpu Westmere,+pcid,enforce -rtc base=3Dutc -usb -device > usb-tablet -no-hpet -vga vmware -chardev > socket,host=3D127.0.0.1,port=3D2001,id=3Dqga0,server,nowait,nodelay -devi= ce > virtio-serial -device > virtserialport,chardev=3Dqga0,name=3Dorg.qemu.guest_agent.0 All pretty boring stuff. hmm. Dave >=20 > Thanks, >=20 > Peter >=20 >=20 -- Dr. David Alan Gilbert / dgilbert@redhat.com / Manchester, UK