> On Aug 26, 2019, at 9:14 AM, Warner Losh <[email protected]> wrote:
> 
> Is it from read_connection_list? If so I have a 'patch' that I'm using but
> haven't committed because it's just too gross: drop the lock before the
> copyout and pick it up again after...
> 

Hmm... interesting.... 

I only took a brief look at it. I suppose I can ensure user space address is 
wired and then copyout() can be called with mutex held

It’s odd that I’ve never seen this before. I’m traveling at the moment will 
take a closer look this later this week

Thanks
Max
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