[ovs-dev] Kernel BUG on Xen

Ben Pfaff blp at nicira.com
Thu Apr 22 17:17:14 UTC 2010


On Thu, Apr 22, 2010 at 11:12:49AM -0600, Nick Couchman wrote:
> >>> On 2010/04/22 at 11:00, Ben Pfaff <blp at nicira.com> wrote:
> > On Thu, Apr 22, 2010 at 10:58:06AM -0600, Nick Couchman wrote:
> >> I'm currently trying to use Open vSwitch to replace Linux bridging on some 
> > Xen machines.  I'm using the latest copy from the git repo, and am running 
> > into a kernel bug when openvswitch tries to compute checksums on packets 
> > coming from Xen guests that don't have checksums computed.  Kernel bug 
> > message is below, and seems to occur as soon as the Xen guests tries to send 
> > out the first packet(s).
> > 
> > Can you tell us some more about the Dom0 kernel that you are using?  Is it
> > provided by some distribution, or is it one that you compiled yourself, 
> > etc.?
> 
> The kernel is an openSuSE 11.2 kernel, 2.6.31.12-0.2-xen.  It's the "stock" kernel - no special changes or anything like that.

Great.

Were you able to verify that this was checksum related by turning off
checksum offloading in the guest kernel?

Thanks,

Ben.




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