Messages in this thread | | | Subject | Re: BUG: unable to handle kernel NULL pointer dereference in ipv6_select_ident | From | Eric Dumazet <> | Date | Wed, 21 Dec 2011 18:36:24 +0100 |
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Le mercredi 21 décembre 2011 à 17:03 +0000, Chris Boot a écrit : > On 21/12/2011 16:29, Eric Dumazet wrote: > > Le mercredi 21 décembre 2011 à 15:52 +0000, Chris Boot a écrit : > >> Hi folks, > >> > >> I'm working on getting a 2-node VM cluster up and running, with DRBD and > >> Corosync/Pacemaker, running KVM VMs. > >> > >> I can trigger a kernel panic in either _host_ system when running an > >> rsync on a _guest_ VM. The rsync is simply SSH over IPv6 from a remote > >> mail store (containing maildirs) to a local filesystem. I'm basically > >> working on migrating a physical IMAP server to one inside a VM. > >> > >> After a few seconds of fairly heavy IPv6 traffic, I get the panic below. > >> You'll notice the panic refers to vhost_net, but I tried without that > >> and the kernel panics at exactly the same call point. > >> > >> Panic: > >> > >> [snip] > >> > >> Any insight will be gratefully received. > >> > >> Thanks, > >> Chris > >> > > Is it a debian kernel ? > > > > You need : https://lkml.org/lkml/2011/10/11/291 > > Eric, > > Aha, that sounds like exactly the culprit, thanks. However I can't find > any reference to it in the 3.1 to 3.1.5 changelogs. Is it fixed in any > of those kernels or would I have to attempt to forward-port the fix myself?
Good point, thats a different problem then, since 3.1 is not supposed to have this bug.
It seems rt->rt6i_peer points to invalid memory in your crash.
(RBX=00000000000001f4)
8b 83 a4 00 00 00 mov 0xa4(%rbx),%eax p->refcnt 1f4+a4 -> CR2=0000000000000298
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