linux-kernel - Re: [PATCH] netconsole: avoid null pointer dereference at show_local

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Message-Id: <20080215.020212.202401321.davem@davemloft.net>
Date:	Fri, 15 Feb 2008 02:02:12 -0800 (PST)
From:	David Miller <davem@...emloft.net>
To:	k-keiichi@...jp.nec.com
Cc:	mpm@...enic.com, satyam.sharma@...il.com,
	linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
	shemminger@...ux-foundation.org
Subject: Re: [PATCH] netconsole: avoid null pointer dereference at
 show_local_mac()

From: Keiichi KII <k-keiichi@...jp.nec.com>
Date: Fri, 15 Feb 2008 18:45:48 +0900

> This patch avoids a null pointer dereference when we read local_mac 
> for netconsole in configfs and shows default local mac address
> value.
> 
> A null pointer dereference occurs when we call show_local_mac() via 
> local_mac entry in configfs before we setup the content of netpoll
> using netpoll_setup().
> 
> This patch is for 2.6.25-rc1.
> Your comments are very welcome.
> 
> Signed-off-by: Keiichi KII <k-keiichi@...jp.nec.com>

Patch applied, thank you.
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