From: Stephen Hemminger <shemminger@vyatta.com>
Date: Mon, 27 Apr 2009 10:04:58 +0000 (-0700)
Subject: veth: prevent oops caused by netdev destructor
X-Git-Tag: v2.6.30-rc4~3^2~10
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ae0e8e82205c903978a79ebf5e31c670b61fa5b4;p=pandora-kernel.git

veth: prevent oops caused by netdev destructor

From: Stephen Hemminger <shemminger@vyatta.com>

The veth driver will oops if sysfs hooks are open while module is removed.

The net device destructor can not point to code in a module; basically
there are only two possible safe values: NULL - no destructor, or
free_netdev - free on last use

Signed-off-by: David S. Miller <davem@davemloft.net>
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