From: David S. Miller <davem@davemloft.net>
Date: Thu, 24 Apr 2008 02:37:58 +0000 (-0700)
Subject: tun: Fix minor race in TUNSETLINK ioctl handling.
X-Git-Tag: v2.6.26-rc1~1088^2~6
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=48abfe05cd01279afe27159e98d7c7f932598f42;p=pandora-kernel.git

tun: Fix minor race in TUNSETLINK ioctl handling.

Noticed by Alan Cox.

The IFF_UP test is a bit racey, because other entities
outside of this driver's ioctl handler can modify that
state, even though this ioctl handler runs under
lock_kernel().

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