Re: KVM induced panic on 2.6.38[2367] & 2.6.39
From: Bart De Schuymer
Date: Mon Jun 06 2011 - 16:11:02 EST
Hi Brad,
This has probably nothing to do with ebtables, so please rmmod in case
it's loaded.
A few questions I didn't directly see an answer to in the threads I
scanned...
I'm assuming you actually use the bridging firewall functionality. So,
what iptables modules do you use? Can you reduce your iptables rules to
a core that triggers the bug?
Or does it get triggered even with an empty set of firewall rules?
Are you using a stock .35 kernel or is it patched?
Is this something I can trigger on a poor guy's laptop or does it
require specialized hardware (I'm catching up on qemu/kvm...)?
cheers,
Bart
PS: I'm not sure if we should keep CC-ing everybody, netfilter-devel
together with kvm should probably do fine.
Op 3/06/2011 18:07, Brad Campbell schreef:
On 03/06/11 23:50, Bernhard Held wrote:
Am 03.06.2011 15:38, schrieb Brad Campbell:
On 02/06/11 07:03, CaT wrote:
On Wed, Jun 01, 2011 at 07:52:33PM +0800, Brad Campbell wrote:
Unfortunately the only interface that is mentioned by name anywhere
in my firewall is $DMZ (which is ppp0 and not part of any bridge).
All of the nat/dnat and other horrible hacks are based on IP
addresses.
Damn. Not referencing the bridge interfaces at all stopped our host
from
going down in flames when we passed it a few packets. These are two
of the oopses we got from it. Whilst the kernel here is .35 we got the
same issue from a range of kernels. Seems related.
Well, I tried sending an explanatory message to netdev, netfilter &
cc'd to kvm,
but it appears not to have made it to kvm or netfilter, and the cc to
netdev has
not elicited a response. My resend to netfilter seems to have dropped
into the
bit bucket also.
Just another reference 3.5 months ago:
http://www.spinics.net/lists/netfilter-devel/msg17239.html
<waves hands around shouting "I have a reproducible test case for this
and don't mind patching and crashing the machine to get it fixed">
Attempted to add netfilter-devel to the cc this time.
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Bart De Schuymer
www.artinalgorithms.be
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