> -----Original Message----- > From: dev [mailto:dev-bounces at dpdk.org] On Behalf Of Christian > Ehrhardt > Sent: Wednesday, May 25, 2016 7:06 AM > To: Martinx - ????? <thiagocmartinsc at gmail.com> > Cc: <dev at openvswitch.org> <dev at openvswitch.org>; dev <dev at dpdk.org> > Subject: Re: [dpdk-dev] Crashing OVS+DPDK at the host, from inside of > a KVM Guest > > Hi, > ping ... > > Later on I want to look at it again once we upgraded to more recent > releases of the software components involved, but those have to be > made > ready to use first :-/ > > But the description is good and I wonder if anybody else could > reproduce > this and/or would have a hint on where this might come from or already > existing related fixes. > > I mean in general nothing should be able to crash the host right?
Hi, I don't know if they are related to the issue that is being seen, but Yuanhan made some fixes in DPDK 16.04 regarding a malicious guest affecting the host. rte_vhost_dequeue_burst() is showing in the stack trace so it might worth testing with the latest code to see if it's the same issue and has been fixed. Kevin. > > > P.S. yeah two list cross posting, but it is yet unclear which it > belongs to > so I'll keep it > > Christian Ehrhardt > Software Engineer, Ubuntu Server > Canonical Ltd > > On Sun, May 15, 2016 at 7:08 AM, Martinx - ????? > <thiagocmartinsc at gmail.com> > wrote: > > > Guys, > > > > If using OVS 2.5 with DPDK 2.2, on Ubuntu Xenial, it is possible to > crash > > the OVS running at the host, from inside of a KVM Guest. > > > > Basically, what I'm trying to do, is to run OVS+DPDK at the host, > and > > also, inside of a KVM Guest, with multi-queue, but it doesn't work > and > > crashes. > > > > Soon as you enable multi-queue at the guest, it crashes the OVS of > the > > host! > > > > OVS+DPDK segfault at the host, after running "ovs-vsctl set > Open_vSwitch . > > other_config:n-dpdk-rxqs=4" within a KVM Guest: > > > > https://bugs.launchpad.net/ubuntu/+source/openvswitch/+bug/1577088 > > > > Thanks! > > Thiago > >