netdev - Re: [PATCH] Fix NULL pointer dereference on firmware name for early calls to get

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Message-Id: <20120330.205154.1612043960353576031.davem@davemloft.net>
Date:	Fri, 30 Mar 2012 20:51:54 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	notting@...hat.com
Cc:	inaky.perez-gonzalez@...el.com, wimax@...uxwimax.org,
	netdev@...r.kernel.org
Subject: Re: [PATCH] Fix NULL pointer dereference on firmware name for
 early calls to get_drvinfo.

From: Bill Nottingham <notting@...hat.com>
Date: Fri, 30 Mar 2012 16:24:05 -0400

> The driver comments show an initialization sequence of:
>  * i2400m_setup()
>  *   i2400m->bus_setup()
>  *   i2400m_bootrom_init()
>  *   register_netdev()
>  *   wimax_dev_add()
>  *   i2400m_dev_start()
>  *     __i2400m_dev_start()
>  *       i2400m_dev_bootstrap()
> 
> dev_bootstrap() is where the firmware is loaded. So, if something calls
> get_drvinfo() from a register_netdevice_notifier (such as the cnic driver),
> we won't have a firmware name, and strncpy will crash.
> 
> https://bugzilla.redhat.com/show_bug.cgi?id=808603
> 
> Signed-off-by: Bill Nottingham <notting@...hat.com>

Already fixed in current sources.
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