upstream patch. http://patchwork.kernel.org/patch/56479/ Patch description: """ Submitter Dustin Kirkland whitelist host virtio networking features This patch is a followup to 8eca6b1bc770982595db2f7207c65051572436cb, fixing crashes when guests with 2.6.25 virtio drivers have saturated virtio network connections. https://bugs.edge.launchpad.net/ubuntu/+source/qemu-kvm/+bug/458521 That patch should have been whitelisting *_HOST_* rather than the the *_GUEST_* features. I tested this by running an Ubuntu 8.04 Hardy guest (2.6.24 kernel + 2.6.25-virtio driver). I saturated both the incoming, and outgoing network connection with nc, seeing sustained 6MB/s up and 6MB/s down bitrates for ~20 minutes. Previously, this crashed immediately. Now, the guest does not crash and maintains network connectivity throughout the test. Signed-off-by: Dustin Kirkland <kirkland> Signed-off-by: Mark McLoughlin <markmc> Tested-by: Dustin Kirkland <kirkland> "
An advisory has been issued which should help the problem described in this bug report. This report is therefore being closed with a resolution of ERRATA. For more information on therefore solution and/or where to find the updated files, please follow the link below. You may reopen this bug report if the solution does not work for you. http://rhn.redhat.com/errata/RHSA-2010-0271.html