On Sat, Aug 3, 2013 at 11:25 AM, Ben Hutchings <b...@decadent.org.uk> wrote:
> Control: tag -1 security moreinfo > > On Thu, 2013-07-11 at 10:09 -0400, C W wrote: > > Package: src:linux > > Version: 3.9.8-1 > > Severity: critical > > Justification: breaks the whole system > > Sorry for the slow response, I don't why this was missed. > > No problem. If anyone else has this problem, they can see it has a simple workaround. > Dear Maintainer, > > > > 3.9.8-1 freezes the host when an Ubuntu 12.04 32-bit or 64-bit guest VM > using > > libvirt/KVM attempts to go through the virtual network bridge using the > virtio > > adapter. This freeze is reproducible 100% of the time. The guest is > using the > > default libvirt network setup (NAT'ed with the virtual bridge virbr0, > virtio > > network adapter) so nothing is strange there. I have not yet seen a > panic. > > > > This issue is not present with the previous version of linux-image-3.9-1: > > 3.9.6-1 > [...] > > I don't see any changes between these two versions that seem like they > could have caused this. Have you verified this by downgrading to > 3.9.6-1? > > The bug does not appear to be in 3.9.6-1. > Is the bug still present in 3.10.3-1, currently in unstable? > > The bug *also* does not appear to be in 3.10.3-1, which is good news. I also tested an Ubuntu 13.04 VM -- to see if perhaps it was some strange interaction between the host and guest virtio drivers. 13.04 locked up just the same. So, if the host is Debian 3.9.8-1 and the guest is either Ubuntu 12.04 (linux-image-3.2.0-37-generic) or 13.04 (linux-image-3.8.0-27-generic), the virtio NIC will freeze the host.
