linux-kernel - Re: USB device cannot be reconnected and khubd "blocked for more than 120 seconds"

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Message-ID: <20130116004412.GL2668@htj.dyndns.org>
Date:	Tue, 15 Jan 2013 16:44:12 -0800
From:	Tejun Heo <tj@...nel.org>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	Ming Lei <ming.lei@...onical.com>,
	Alex Riesen <raa.lkml@...il.com>,
	Alan Stern <stern@...land.harvard.edu>,
	Jens Axboe <axboe@...nel.dk>,
	USB list <linux-usb@...r.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Arjan van de Ven <arjan@...ux.intel.com>
Subject: Re: USB device cannot be reconnected and khubd "blocked for more
 than 120 seconds"

On Tue, Jan 15, 2013 at 04:36:34PM -0800, Linus Torvalds wrote:
> The thing is, the module loading in particular is not necessarily
> happening in the same context as what *started* the module loading. A
> module loader will request the module from user space, and then later
> user space - through possibly a totally unrelated process - will
> finish it. So there is no "myself". There's not even necessarily any
> relationship that the kernel even knows about, because the module
> loading request can have gone from usermode_helper over something like
> dbus to systemd.
> 
> See?

Right.  Gees, there's even no way to link them.

-- 
tejun
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