netdev - Re: [PATCH 2/2] usbnet: don't clear urb->dev in tx

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Message-Id: <20120322.193341.331032344338370166.davem@davemloft.net>
Date:	Thu, 22 Mar 2012 19:33:41 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	gregkh@...uxfoundation.org
Cc:	tom.leiming@...il.com, netdev@...r.kernel.org,
	linux-usb@...r.kernel.org, stable@...nel.org,
	stern@...land.harvard.edu, oliver@...kum.org
Subject: Re: [PATCH 2/2] usbnet: don't clear urb->dev in tx_complete

From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Date: Thu, 22 Mar 2012 07:36:07 -0700

> On Thu, Mar 22, 2012 at 09:22:38PM +0800, Ming Lei wrote:
>> URB unlinking is always racing with its completion and tx_complete
>> may be called before or during running usb_unlink_urb, so tx_complete
>> must not clear urb->dev since it will be used in unlink path,
>> otherwise invalid memory accesses or usb device leak may be caused
>> inside usb_unlink_urb.
>> 
>> Cc: stable@...nel.org
>> Cc: Alan Stern <stern@...land.harvard.edu>
>> Cc: Oliver Neukum <oliver@...kum.org>
>> Signed-off-by: Ming Lei <tom.leiming@...il.com>
> 
> Acked-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

Applied.
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