I do have a Thunderbolt dock, but it is not so trivially reproducable
for me.  Most of the time I can undock and redock just fine.  I
suspect I did something in an unusual order, like closed my laptop and
*then* undocked, instead of undocking first.

On Mon, Apr 30, 2018 at 04:49:52PM -0000, Anders Kvist wrote:
> I assume you have a Thunderbolt dock? I see the same, happens each time
> after undocking and then the dock won't work anymore until a reboot.
> 
> It seems to be a problem with a double dereference in xhci dbgtty. Check
> this bug at redhat, which describes the problem and also has a fix:
> 
> https://bugzilla.redhat.com/show_bug.cgi?id=1565131
> 
> ** Bug watch added: Red Hat Bugzilla #1565131
>    https://bugzilla.redhat.com/show_bug.cgi?id=1565131
> 
> ** Attachment added: "dmesg - thunderbolt attach and deattach"
>    
> https://bugs.launchpad.net/ubuntu/+source/linux-signed/+bug/1767452/+attachment/5130886/+files/thunderbolt_crash
> 

-- 
fREW Schmidt
https://blog.afoolishmanifesto.com

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Title:
  kernel oops when I undocked

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