From: Dustin Kirkland <kirkland@canonical.com> To: qemu-devel@nongnu.org, kvm@vger.kernel.org, Anthony Liguori <anthony@codemonkey.ws> Subject: qemu-kvm-0.11 regression, crashes on older guests with virtio network Date: Wed, 28 Oct 2009 14:22:43 -0500 [thread overview] Message-ID: <d9c105ea0910281222u76a61a2by3cc924e85d40a865@mail.gmail.com> (raw) I believe that we have identified a regression in qemu-kvm-0.11.0. The kvm process crashes for older guests with virtio networking, when the guest's incoming network connection is saturated. The subject guest is Ubuntu 8.04 Hardy, 2.6.24 kernel with virtio backports. For your convenience, I have uploaded a stock, ~260MB Ubuntu 8.04 disk image (user/pw = ubuntu) that I'm using to reproduce the problem at: * http://rookery.canonical.com/~kirkland/hardy.img.bz2 The command line is: * sudo /usr/bin/kvm -m 512 -net nic,model=virtio -net tap,script=/home/kirkland/bin/bridge.sh -drive file=hardy.img,if=virtio,index=0,boot=on The bridge script is: * http://rookery.canonical.com/~kirkland/bridge.sh I'm saturating the guest's incoming network connection, with: user@guest$ nc -lp 1234 > /dev/null and user@host$ cat /dev/urandom | nc -w 3 guest_ip 1234 In less than a second of sending, the vm crashes with: virtio-net truncating packet I have strace logs, if that's helpful. I have not reproduced the problem: a) by saturating the guest's outgoing network b) with newer guests ( >= 2.6.27 ) c) on kvm-84 on the host We're tracking this issue at: * https://bugs.launchpad.net/ubuntu/+source/qemu-kvm/+bug/458521 I'll gladly review and test patches, or take pointers on where I might look to solve this issue. -- :-Dustin
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From: Dustin Kirkland <kirkland@canonical.com> To: qemu-devel@nongnu.org, kvm@vger.kernel.org, Anthony Liguori <anthony@codemonkey.ws> Subject: [Qemu-devel] qemu-kvm-0.11 regression, crashes on older guests with virtio network Date: Wed, 28 Oct 2009 14:22:43 -0500 [thread overview] Message-ID: <d9c105ea0910281222u76a61a2by3cc924e85d40a865@mail.gmail.com> (raw) I believe that we have identified a regression in qemu-kvm-0.11.0. The kvm process crashes for older guests with virtio networking, when the guest's incoming network connection is saturated. The subject guest is Ubuntu 8.04 Hardy, 2.6.24 kernel with virtio backports. For your convenience, I have uploaded a stock, ~260MB Ubuntu 8.04 disk image (user/pw = ubuntu) that I'm using to reproduce the problem at: * http://rookery.canonical.com/~kirkland/hardy.img.bz2 The command line is: * sudo /usr/bin/kvm -m 512 -net nic,model=virtio -net tap,script=/home/kirkland/bin/bridge.sh -drive file=hardy.img,if=virtio,index=0,boot=on The bridge script is: * http://rookery.canonical.com/~kirkland/bridge.sh I'm saturating the guest's incoming network connection, with: user@guest$ nc -lp 1234 > /dev/null and user@host$ cat /dev/urandom | nc -w 3 guest_ip 1234 In less than a second of sending, the vm crashes with: virtio-net truncating packet I have strace logs, if that's helpful. I have not reproduced the problem: a) by saturating the guest's outgoing network b) with newer guests ( >= 2.6.27 ) c) on kvm-84 on the host We're tracking this issue at: * https://bugs.launchpad.net/ubuntu/+source/qemu-kvm/+bug/458521 I'll gladly review and test patches, or take pointers on where I might look to solve this issue. -- :-Dustin
next reply other threads:[~2009-10-28 19:22 UTC|newest] Thread overview: 70+ messages / expand[flat|nested] mbox.gz Atom feed top 2009-10-28 19:22 Dustin Kirkland [this message] 2009-10-28 19:22 ` [Qemu-devel] qemu-kvm-0.11 regression, crashes on older guests with virtio network Dustin Kirkland 2009-10-28 19:29 ` Dustin Kirkland 2009-10-28 19:29 ` [Qemu-devel] " Dustin Kirkland 2009-10-29 3:12 ` [Qemu-devel] " Scott Tsai 2009-10-29 3:12 ` Scott Tsai 2009-10-29 9:16 ` Mark McLoughlin 2009-10-29 9:16 ` Mark McLoughlin 2009-10-29 12:00 ` Scott Tsai 2009-10-29 12:00 ` Scott Tsai 2009-10-29 12:16 ` Mark McLoughlin 2009-10-29 12:16 ` Mark McLoughlin 2009-10-29 12:21 ` Scott Tsai 2009-10-29 12:21 ` Scott Tsai 2009-10-29 14:11 ` Anthony Liguori 2009-10-29 14:11 ` Anthony Liguori 2009-10-29 14:25 ` Mark McLoughlin 2009-10-29 14:25 ` Mark McLoughlin 2009-10-29 14:34 ` Dustin Kirkland 2009-10-29 14:34 ` Dustin Kirkland 2009-10-29 14:46 ` Dustin Kirkland 2009-10-29 14:46 ` Dustin Kirkland 2009-10-29 14:50 ` Mark McLoughlin 2009-10-29 14:50 ` Mark McLoughlin 2009-10-29 14:39 ` Anthony Liguori 2009-10-29 14:39 ` Anthony Liguori 2009-10-29 14:48 ` Mark McLoughlin 2009-10-29 14:48 ` Mark McLoughlin 2009-10-29 15:01 ` Dustin Kirkland 2009-10-29 15:01 ` Dustin Kirkland 2009-10-29 15:01 ` Mark McLoughlin 2009-10-29 15:01 ` Mark McLoughlin 2009-10-29 15:13 ` Dustin Kirkland 2009-10-29 15:13 ` Dustin Kirkland 2009-10-29 15:15 ` Mark McLoughlin 2009-10-29 15:15 ` Mark McLoughlin 2009-10-29 15:34 ` [PATCH] whitelist host virtio networking features [was Re: qemu-kvm-0.11 regression, crashes on older ...] Dustin Kirkland 2009-10-29 15:34 ` [Qemu-devel] " Dustin Kirkland 2009-10-30 21:15 ` Dustin Kirkland 2009-10-30 21:15 ` [Qemu-devel] " Dustin Kirkland 2009-11-02 14:38 ` Mark McLoughlin 2009-11-02 14:38 ` [Qemu-devel] " Mark McLoughlin 2009-11-02 15:42 ` Anthony Liguori 2009-11-02 15:42 ` [Qemu-devel] " Anthony Liguori 2009-11-02 15:52 ` Jamie Lokier 2009-11-02 18:20 ` Michael Tokarev 2009-11-02 18:20 ` Michael Tokarev 2009-11-02 19:39 ` Jamie Lokier 2009-11-02 19:39 ` Jamie Lokier 2009-11-02 18:55 ` Anthony Liguori 2009-11-02 19:25 ` Dustin Kirkland 2009-11-02 19:25 ` Dustin Kirkland 2009-11-02 20:50 ` Anthony Liguori 2009-11-02 20:50 ` Anthony Liguori 2009-11-05 5:06 ` Jamie Lokier 2009-11-05 5:06 ` Jamie Lokier 2009-11-02 16:58 ` Dustin Kirkland 2009-11-02 16:58 ` [Qemu-devel] " Dustin Kirkland 2009-10-29 14:39 ` [Qemu-devel] qemu-kvm-0.11 regression, crashes on older guests with virtio network Dustin Kirkland 2009-10-29 14:39 ` Dustin Kirkland 2009-10-29 23:22 ` Scott Tsai 2009-10-29 23:22 ` Scott Tsai 2009-10-29 12:23 ` Michael S. Tsirkin 2009-10-29 12:23 ` [Qemu-devel] " Michael S. Tsirkin 2009-10-29 14:38 ` Avi Kivity 2009-10-29 14:38 ` [Qemu-devel] " Avi Kivity 2009-10-29 15:03 ` Michael S. Tsirkin 2009-10-29 15:03 ` [Qemu-devel] " Michael S. Tsirkin 2009-10-29 14:43 ` [Qemu-devel] " Dustin Kirkland 2009-10-29 14:43 ` Dustin Kirkland
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