linux-kernel - Re: tg3: unable to handle null pointer dereference

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Message-Id: <20070406.173600.38712619.davem@davemloft.net>
Date:	Fri, 06 Apr 2007 17:36:00 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	mchan@...adcom.com
Cc:	nacc@...ibm.com, torvalds@...ux-foundation.org,
	linux-kernel@...r.kernel.org, netdev@...r.kernel.org
Subject: Re: tg3: unable to handle null pointer dereference

From: "Michael Chan" <mchan@...adcom.com>
Date: Fri, 06 Apr 2007 15:57:13 -0700

> On Fri, 2007-04-06 at 14:40 -0700, Nishanth Aravamudan wrote:
> 
> > 2.6.21-rc5 is ok. 2.6.21-rc6 results in
> > 
> > [   14.241665] Unable to handle kernel NULL pointer dereference (address 0000000000000000)
> 
> Sorry, I think this should fix it:
> 
> [TG3]: Fix crash during tg3_init_one().
> 
> The driver will crash when the chip has been initialized by EFI before
> tg3_init_one().  In this case, the driver will call tg3_chip_reset()
> before allocating consistent memory.
> 
> The bug is fixed by checking for tp->hw_status before accessing it
> during tg3_chip_reset().
> 
> Signed-off-by: Michael Chan <mchan@...adcom.com>

Applied, thanks Michael.
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