netdev - Re: [2.6.30-git21] Network Namespace test failure

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Message-ID: <20090625031449.GA26767@us.ibm.com>
Date:	Wed, 24 Jun 2009 22:14:49 -0500
From:	"Serge E. Hallyn" <serue@...ibm.com>
To:	Sachin Sant <sachinp@...ibm.com>
Cc:	netdev <netdev@...r.kernel.org>, serue@...ux.vnet.ibm.com,
	David Miller <davem@...emloft.net>, matthltc@...ibm.com,
	Stephen Hemminger <shemminger@...tta.com>
Subject: Re: [2.6.30-git21] Network Namespace test failure

Quoting Sachin Sant (sachinp@...ibm.com):
> Serge E. Hallyn wrote:
>> Precise kernel version and .config?
>>   
> Kernel version is 2.6.30-git21 (626f380d0b264a1e40237f5a2a3dffc5d14f256e)

Thanks.  I bisected it to commit
ae0e8e82205c903978a79ebf5e31c670b61fa5b4 : "veth: prevent oops caused by
netdev destructor".  That moves the free_percpu(priv->stats) from
veth_dev_free to veth_close().  Since it gets allocated at
veth_dev_init, and dveth_xmit uses it unconditionally, that seems like a
likely cause of the oops?

-serge
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