linux-kernel - Re: [PATCH resend] fib:fix BUG_ON in fib_nl

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Message-Id: <20110921.151701.1605320247440880043.davem@davemloft.net>
Date:	Wed, 21 Sep 2011 15:17:01 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	wanlong.gao@...il.com
Cc:	linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
	omarapazanadi@...il.com, gaofeng@...fujitsu.com,
	eric.dumazet@...il.com
Subject: Re: [PATCH resend] fib:fix BUG_ON in fib_nl_newrule when add new
 fib rule

From: Wanlong Gao <wanlong.gao@...il.com>
Date: Mon, 12 Sep 2011 09:36:05 +0800

> From: Gao feng <gaofeng@...fujitsu.com>
> 
> 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@...fujitsu.com>
> Signed-off-by: Eric Dumazet <eric.dumazet@...il.com>

Applied, thanks a lot.
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