Date: Tue, 22 Dec 2009 21:37:34 -0800
From: Greg KH <greg@kroah.com>
To: "Rafael J. Wysocki" <rjw@sisk.pl>
Cc: Alan Stern <stern@rowland.harvard.edu>, linux-usb@vger.kernel.org,
       LKML <linux-kernel@vger.kernel.org>,
       Linus Torvalds <torvalds@linux-foundation.org>,
       Stefani Seibold <stefani@seibold.net>,
       Andrew Morton <akpm@linux-foundation.org>
Subject: Re: [Regression, 2.6.33-rc1->current git] NULL pointer in
	usb_serial_probe() introduced by the recent kfifo changes
Message-ID: <20091223053734.GC22808@kroah.com>
References: <200912230251.31568.rjw@sisk.pl>
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On Wed, Dec 23, 2009 at 02:51:31AM +0100, Rafael J. Wysocki wrote:
> Hi,
> 
> Something like the patch below is necessary to fix a new NULL pointer deref
> in usb_serial_probe() that appeared after the recent kfifo changes (in short,
> the kfifo changes modified the semantics of kfifo_alloc() that
> usb_serial_probe() reiled on).

What semantic changed?  I thought that the kfifo patches came with
patches that also fixed up any changed that were needed.  What went
wrong here?

Does your patch solve the oops?

thanks,

greg k-h
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