netdev - Re: 3.0.8 kernel : NULL ptr deref in skb_queue

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Message-ID: <20111208180208.GA16883@kroah.com>
Date:	Thu, 8 Dec 2011 10:02:08 -0800
From:	Greg KH <greg@...ah.com>
To:	Grant Grundler <grundler@...omium.org>
Cc:	netdev@...r.kernel.org, linux-usb@...r.kernel.org
Subject: Re: 3.0.8 kernel : NULL ptr deref in skb_queue_purge()

On Wed, Dec 07, 2011 at 02:40:49PM -0800, Grant Grundler wrote:
> Hi,
> I'm testing asix (USB 100BT ethernet adapter with AX88772) driver
> initialization (and shut down) paths and reproduced a
> "skb_queue_purge" panic 3 times after a few hundred/thousand
> iterations of rmmod/modprobe. I'm inclined to believe
> skb_queue_purge() is a victim and not a culprit here.
> 
>  I don't know if all 3 "spontaneous reboots" I've seen have the same
> stack trace as the one I have a record for:

Have you tried this on 3.1, and especially, 3.2-rc?  A number of asix
patches have gone into the 3.2-rc series, perhaps they might have
resolved this problem already?

thanks,

greg k-h
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