From: Gao feng <gaofeng@cn•fujitsu.com>
To: canqun zhang <canqunzhang@gmail•com>
Cc: Patrick McHardy <kaber@trash•net>,
netfilter-devel@vger•kernel.org, netfilter@vger•kernel.org,
linux-kernel@vger•kernel.org,
"netdev@vger•kernel.org" <netdev@vger•kernel.org>
Subject: Re: kernel panic when running /etc/init.d/iptables restart
Date: Tue, 25 Dec 2012 13:36:03 +0800 [thread overview]
Message-ID: <50D93B43.8060303@cn.fujitsu.com> (raw)
In-Reply-To: <CAFFEFTXxsPRf1Rmxyih0wL4O6q8G0OFmz0iRLX0tOYedYfajHw@mail.gmail.com>
cc netdev
Hi canqun:
On 2012/12/24 13:51, canqun zhang wrote:
> Hi Patrick，
> If i start one lxc container instance, and then in the system there
> will be two net namespaces,one is init_net namespace, the other is
> created by lxc.If running "/etc/init.d/iptables restart",the system
> will be panic. I find iptables restarting will clean init_net
> namespace firstly,then clean the net namespace created by lxc,buf
> related functions about cleaning up init_net namespace will destroy
> global variables such as nf_ct_destroy,ip_ct_attach，etc.So,funtions
> cleaning up the other net namespace will be panic.
>
I'm afraid that the system will not panic.
When do rmmod nf_conntrack_ipv[4,6],we already call nf_ct_iterate_cleanup
to destroy the nf_conns which belongs to l[3,4]proto protocols,At this
time the nf_ct_destroy still points to destroy_conntrack because the module
nf_conntrack is hold by l3 and l4proto.
You can check the function nf_conntrack_l[3,4]proto_unregister.
Can you make it a little clear?
The reproduction and oops dump stack is useful.
Thanks!
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next parent reply other threads:[~2012-12-25 5:36 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CAFFEFTXxsPRf1Rmxyih0wL4O6q8G0OFmz0iRLX0tOYedYfajHw@mail.gmail.com>
2012-12-25 5:36 ` Gao feng [this message]
2012-12-25 7:25 ` kernel panic when running /etc/init.d/iptables restart canqun zhang
2012-12-25 8:38 ` Gao feng
2012-12-25 10:45 ` canqun zhang
2012-12-28 3:27 ` canqun zhang
2012-12-28 3:39 ` canqun zhang
2012-12-25 8:50 ` Gao feng
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