netdev - Re: [PATCH 1/1 v2] Fix dst_neigh_lookup/dst_neigh_lookup

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Date:	Fri, 15 Mar 2013 09:07:31 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	zhouzhouyi@...il.com
Cc:	netdev@...r.kernel.org, yizhouzhou@....ac.cn
Subject: Re: [PATCH 1/1 v2] Fix dst_neigh_lookup/dst_neigh_lookup_skb
 return value handling bug

From: Zhouyi Zhou <zhouzhouyi@...il.com>
Date: Fri, 15 Mar 2013 11:21:50 +0800

> When neighbour table is full, dst_neigh_lookup/dst_neigh_lookup_skb will return
> -ENOBUFS which is absolutely non zero, while all the code in kernel which use 
> above functions assume failure only on zero return which will cause panic. (for
> example: : https://bugzilla.kernel.org/show_bug.cgi?id=54731).
> 
> This patch corrects above error with smallest changes to kernel source code and
> also correct two return value check missing bugs in drivers/infiniband/hw/cxgb4/cm.c
> 
> Tested on my x86_64 SMP machine
> 
> Reported-by: Zhouyi Zhou <zhouzhouyi@...il.com>
> Tested-by: Zhouyi Zhou <zhouzhouyi@...il.com>
> Signed-off-by: Zhouyi Zhou <zhouzhouyi@...il.com>

Applied.
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