From: David Miller <davem@davemloft.net>
To: zealot0630@gmail.com
Cc: netdev@vger.kernel.org
Subject: Re: [PATCH 1/1] vxlan: fix oops when delete netns containing vxlan
Date: Thu, 07 Mar 2013 16:13:33 -0500 (EST) [thread overview]
Message-ID: <20130307.161333.371120212677853189.davem@davemloft.net> (raw)
In-Reply-To: <1362580657-25580-1-git-send-email-zealot0630@gmail.com>
From: Zang MingJie <zealot0630@gmail.com>
Date: Wed, 6 Mar 2013 22:37:37 +0800
>
> The following script will produce a kernel oops:
>
> sudo ip netns add v
> sudo ip netns exec v ip ad add 127.0.0.1/8 dev lo
> sudo ip netns exec v ip link set lo up
> sudo ip netns exec v ip ro add 224.0.0.0/4 dev lo
> sudo ip netns exec v ip li add vxlan0 type vxlan id 42 group 239.1.1.1 dev lo
> sudo ip netns exec v ip link set vxlan0 up
> sudo ip netns del v
>
> where inspect by gdb:
...
> The kernel calls `vxlan_exit_net` when deleting the netns before shutting down
> vxlan interfaces. Later the removal of all vxlan interfaces, where `vn->sock`
> is already gone causes the oops. so we should manually shutdown all interfaces
> before deleting `vn->sock` as the patch does.
>
> Signed-off-by: Zang MingJie <zealot0630@gmail.com>
Applied and queued up for -stable, thanks.
prev parent reply other threads:[~2013-03-07 21:13 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-03-06 14:37 [PATCH 1/1] vxlan: fix oops when delete netns containing vxlan Zang MingJie
2013-03-07 21:13 ` David Miller [this message]
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