From: Brad Campbell <brad@fnarfbargle.com>
To: Patrick McHardy <kaber@trash.net>
Cc: Bart De Schuymer <bdschuym@pandora.be>,
kvm@vger.kernel.org, linux-mm@kvack.org,
linux-kernel@vger.kernel.org, netdev@vger.kernel.org,
netfilter-devel@vger.kernel.org
Subject: Re: KVM induced panic on 2.6.38[2367] & 2.6.39
Date: Wed, 08 Jun 2011 07:43:59 +0800 [thread overview]
Message-ID: <4DEEB7BF.9000801@fnarfbargle.com> (raw)
In-Reply-To: <4DEE4538.1020404@trash.net>
On 07/06/11 23:35, Patrick McHardy wrote:
> The main suspects would be NAT and TCPMSS. Did you also try whether
> the crash occurs with only one of these these rules?
To be honest I'm actually having trouble finding where TCPMSS is
actually set in that ruleset. This is a production machine so I can only
take it down after about 9PM at night. I'll have another crack at it
tonight.
>> I've just compiled out CONFIG_BRIDGE_NETFILTER and can no longer access
>> the address the way I was doing it, so that's a no-go for me.
>
> That's really weird since you're apparently not using any bridge
> netfilter features. It shouldn't have any effect besides changing
> at which point ip_tables is invoked. How are your network devices
> configured (specifically any bridges)?
>
I have one bridge with all my virtual machines on it.
In this particular instance the packets leave VM A destined for the IP
address of ppp0 (the external interface). This is intercepted by the
DNAT PREROUTING rule above and shunted back to VM B.
The VM's are on br1 and the external address is ppp0. Without
CONFIG_BRIDGE_NETFILTER compiled in I can see the traffic entering and
leaving VM B with tcpdump, but the packets never seem to get back to VM A.
VM A is XP 32 bit, VM B is Linux. I have some other Linux VM's, so I'll
do some more testing tonight between those to see where the packets are
going without CONFIG_BRIDGE_NETFILTER set.
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next prev parent reply other threads:[~2011-06-07 23:43 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <4DE44333.9000903@fnarfbargle.com>
[not found] ` <20110531054729.GA16852@liondog.tnic>
[not found] ` <4DE4B432.1090203@fnarfbargle.com>
[not found] ` <20110531103808.GA6915@eferding.osrc.amd.com>
[not found] ` <4DE4FA2B.2050504@fnarfbargle.com>
[not found] ` <alpine.LSU.2.00.1105311517480.21107@sister.anvils>
[not found] ` <4DE589C5.8030600@fnarfbargle.com>
[not found] ` <20110601011527.GN19505@random.random>
[not found] ` <alpine.LSU.2.00.1105312120530.22808@sister.anvils>
[not found] ` <4DE5DCA8.7070704@fnarfbargle.com>
[not found] ` <4DE5E29E.7080009@redhat.com>
[not found] ` <4DE60669.9050606@fnarfbargle.com>
[not found] ` <4DE60918.3010008@redhat.com>
[not found] ` <4DE60940.1070107@redhat.com>
[not found] ` <4DE61A2B.7000008@fnarfbargle.com>
2011-06-01 11:09 ` KVM induced panic on 2.6.38[2367] & 2.6.39 Avi Kivity
2011-06-01 11:18 ` CaT
2011-06-01 11:52 ` Brad Campbell
2011-06-01 23:03 ` CaT
2011-06-03 13:38 ` Brad Campbell
2011-06-03 15:50 ` Bernhard Held
2011-06-03 16:07 ` Brad Campbell
2011-06-06 20:10 ` Bart De Schuymer
2011-06-06 20:23 ` Eric Dumazet
2011-06-07 3:33 ` Brad Campbell
2011-06-07 13:30 ` Patrick McHardy
2011-06-07 14:40 ` Brad Campbell
2011-06-07 15:35 ` Patrick McHardy
2011-06-07 18:31 ` Eric Dumazet
2011-06-07 22:57 ` Patrick McHardy
2011-06-08 0:18 ` Brad Campbell
2011-06-08 3:59 ` Eric Dumazet
2011-06-08 17:02 ` Brad Campbell
2011-06-08 21:22 ` Eric Dumazet
2011-06-10 2:52 ` Simon Horman
2011-06-10 12:37 ` Mark Lord
2011-06-10 16:43 ` Henrique de Moraes Holschuh
2011-06-12 15:38 ` Avi Kivity
2011-06-07 23:43 ` Brad Campbell [this message]
2011-06-07 18:04 ` Bart De Schuymer
2011-06-08 0:15 ` Brad Campbell
2011-06-05 8:14 ` Avi Kivity
2011-06-05 13:45 ` Brad Campbell
2011-06-05 13:58 ` Avi Kivity
2011-06-06 20:22 ` Eric Dumazet
2011-06-07 13:27 ` Brad Campbell
2011-06-07 13:37 ` Eric Dumazet
2011-06-07 15:15 ` Brad Campbell
2011-08-20 13:16 ` Brad Campbell
2011-08-22 6:36 ` Avi Kivity
2011-08-22 6:45 ` Eric Dumazet
2011-08-22 11:45 ` Brad Campbell
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