Hi Jesse, Can i know which part or lines of this stack trace indicating a loop? If there is a loop,the kernel "must" crash and reboot? Why do not ovs just block the path?
Many thanks. Faithfulman 2013/3/12 Jesse Gross <je...@nicira.com> > On Sun, Mar 10, 2013 at 11:00 PM, 謝秉融 <faithful...@gmail.com> wrote: > > Hi, > > My openvswitch version is 1.7.1 > > And I use command"ovs-vsctl add-port br0 gre0 -- set interface gre0 > type=gre > > options:remote_ip=10.X.X.1" . > > I built a GRE tunnel between ovs1 and ovs2. > > My question is > > > > 1.Loops will let the kernel crash and reboot? > > > > 2.If there is no loops,why this tunnel still let kernel crash...? > > > > And there is a backtrace from kdump below. > > This stack trace indicates a loop, so I'm not sure if there is a > second problem or if the loop remains in your configuration in the > second case. > > OVS has some basic kernel loop prevention but ultimately it's not > really possible to prevent all loops (particularly when going through > the IP stack) without preventing some legitimate use cases. >
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