From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:42668) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Uv3sf-0002U3-PR for qemu-devel@nongnu.org; Fri, 05 Jul 2013 07:08:50 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Uv3se-0004B1-Hn for qemu-devel@nongnu.org; Fri, 05 Jul 2013 07:08:49 -0400 Received: from mail-wg0-x230.google.com ([2a00:1450:400c:c00::230]:47587) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Uv3se-0004Aq-Bo for qemu-devel@nongnu.org; Fri, 05 Jul 2013 07:08:48 -0400 Received: by mail-wg0-f48.google.com with SMTP id f11so1845984wgh.3 for ; Fri, 05 Jul 2013 04:08:47 -0700 (PDT) Message-ID: <51D6A93B.1090409@gmail.com> Date: Fri, 05 Jul 2013 13:08:43 +0200 From: poma MIME-Version: 1.0 References: <51D2B8A1.9050002@gmail.com> <20130703114327.GW2778@redhat.com> <51D53D0C.4050404@gmail.com> In-Reply-To: <51D53D0C.4050404@gmail.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Subject: Re: [Qemu-devel] [libvirt-users] libvirt & virtio_net - host.freeze@reset.domain List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: "Daniel P. Berrange" Cc: kvm-devel , Mateusz Marzantowicz , Josh Boyer , libvir-list@redhat.com, netdev@vger.kernel.org, "qemu-devel@nongnu.org" , Adam Baker , libvirt-users@redhat.com, Virt-tools List , Herbert Xu , Cong Wang On 04.07.2013 11:14, poma wrote: > On 03.07.2013 13:43, Daniel P. Berrange wrote: >> On Tue, Jul 02, 2013 at 01:25:21PM +0200, poma wrote: >>> Hello people, >>> >>> libvirtd (libvirt) 1.0.5.2 >>> virsh 1.0.5.2 >>> virt-manager 0.10.0 >>> >>> Host: >>> Linux localhost 3.9.8-300.fc19.x86_64 #1 SMP Thu Jun 27 19:24:23 UTC >>> 2013 x86_64 x86_64 x86_64 GNU/Linux >>> Guest1: >>> Linux localhost 3.9.8-300.fc19.i686.PAE #1 SMP Thu Jun 27 19:29:30 UTC >>> 2013 i686 (none) >>> Guest2: >>> Linux localhost 3.9.8-300.fc19.x86_64 #1 SMP Thu Jun 27 19:24:23 UTC >>> 2013 x86_64 x86_64 x86_64 GNU/Linux >>> >>> >>> Virtual NIC - source & model: >>> macvtap/NAT/bridge & virtio(virtio_net) >>> >>> Host freeze at "virsh reset " or "virt-manager - Force Reset" >>> Need kernel.sysrq or power reset. >> >> I don't believe this is a libvirt issue - the 'virsh reset' command >> will issue the 'system_reset' QEMU monitor command. This in turn >> does an immediate reset of the guest CPUs/machine. >> >> Even if QEMU is doing the wrong thing, the kernel should obviously >> never freeze/crash in this way - it should be robust against a >> malicious QEMU process. >> >> You should probably send this message to the main QEMU and/or KVM >> mailing lists so that it comes to the attention of people who are >> more familiar with QEMU + virtio-net >> >> >> Regards, >> Daniel >> > > Thanks for your response. > Mateusz hit the same issue[1] as well. > OK, here we go. > > > poma > > > [1] https://lists.fedoraproject.org/pipermail/users/2013-July/436984.html OK, is this a side effect or not, but certainly kernel[1] with 'bridge-timer-fix.patch'[2] resolves issue aforementioned, so far. Thanks Cong, Josh. poma [1] http://koji.fedoraproject.org/koji/taskinfo?taskID=5569632 kernel-3.9.8-300.7.fc19.x86_64.rpm [2] https://bugzilla.redhat.com/show_bug.cgi?id=880035#c53 Ref. "fix for unreliable guest->host multicast triggers oops" https://bugzilla.redhat.com/show_bug.cgi?id=980254