linux-kernel - Re: PROBLEM: Kernel Bug on USB unplugging (Elo TouchSystems CarrollTouch 4500U)

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Date:	Tue, 31 May 2016 13:56:07 +0200
From:	Pierre Sauter <pierre.sauter@...m.de>
To:	Oliver Neukum <oneukum@...e.com>
Cc:	linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org,
	Alan Stern <stern@...land.harvard.edu>
Subject: Re: PROBLEM: Kernel Bug on USB unplugging (Elo TouchSystems CarrollTouch 4500U)

Works like a charm, problem fixed!
Thanks a lot.

I hope you submit the patch.

Best Regards
-- 
Pierre Sauter
Studentenwerk München
IT-Abteilung
Leopoldstraße 15
80802 München
Tel: +49 89 38196-157

-------
Am Dienstag, 31. Mai 2016, 10:13:10 schrieben Sie:
> On Mon, 2016-05-30 at 18:47 +0200, Pierre Sauter wrote:
> > On unplugging this USB Touchscreen, everytime I get either:
> > 
> > [  161.596055] BUG: unable to handle kernel NULL pointer dereference at 00000015
> > [  161.596093] IP: [<c10c92b0>] get_next_timer_interrupt+0x80/0x270
> > or
> > [  155.892061] BUG: unable to handle kernel paging request at 30303046
> > [  155.892101] IP: [<c10d13da>] get_next_timer_interrupt+0x8a/0x290
> > 
> > and then panic and the system is unresponsive.
> 
> Please try the attached patch.
> 
> 	Regards
> 		Oliver
>