From: Gao feng <gaofeng@cn.fujitsu.com>
Date: Sun, 11 Sep 2011 15:36:05 +0000 (+0000)
Subject: fib:fix BUG_ON in fib_nl_newrule when add new fib rule
X-Git-Tag: v3.1-rc7~2^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=561dac2d410ffac0b57a23b85ae0a623c1a076ca;p=pandora-kernel.git

fib:fix BUG_ON in fib_nl_newrule when add new fib rule

add new fib rule can cause BUG_ON happen
the reproduce shell is
ip rule add pref 38
ip rule add pref 38
ip rule add to 192.168.3.0/24 goto 38
ip rule del pref 38
ip rule add to 192.168.3.0/24 goto 38
ip rule add pref 38

then the BUG_ON will happen
del BUG_ON and use (ctarget == NULL) identify whether this rule is unresolved

Signed-off-by: Gao feng <gaofeng@cn.fujitsu.com>
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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