From: Eric Dumazet <eric.dumazet@gmail.com>
Date: Mon, 24 Jan 2011 21:16:16 +0000 (-0800)
Subject: net: arp_ioctl() must hold RTNL
X-Git-Tag: v2.6.38-rc3~29^2~20
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c506653d35249bb4738bb139c24362e1ae724bc1;p=pandora-kernel.git

net: arp_ioctl() must hold RTNL

Commit 941666c2e3e0 "net: RCU conversion of dev_getbyhwaddr() and
arp_ioctl()" introduced a regression, reported by Jamie Heilman.
"arp -Ds 192.168.2.41 eth0 pub" triggered the ASSERT_RTNL() assert
in pneigh_lookup()

Removing RTNL requirement from arp_ioctl() was a mistake, just revert
that part.

Reported-by: Jamie Heilman <jamie@audible.transient.net>
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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