Re: Lockdep problem: v3.18+ (with yesterday's Linus tip - 6f51ee709e4c)

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On Wed, Jan 07, 2015 at 10:42:14AM -0500, Alan Stern wrote:
> On Thu, 18 Dec 2014, Greg Kroah-Hartman wrote:
> > That seems reasonable to me, unbinding when a reset is happening is
> > going to be a rare condition, but if we get rid of it, and we try to
> > queue a reset for a device that is gone, we will just fail the reset,
> > right?  If all should be fine, I have no objection to removing it.
> 
> Russell, can you reproduce that lockdep violation whenever you want?

I can certainly try it - I move the logitek receiver around between about
five machines depending on which I'm wanting to use.  Obviously, having
had the Christmas holidays recently, it hasn't been moved so much.

However, at the moment, I'm still not doing much in the way of kernel
work due to ongoing illness.

> If you can, does the following patch help?

I'll give it a go once I've worked out how reproducable it is, many
thanks for looking into this.

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according to speedtest.net.
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