Re: tty: deadlock between n_tracerouter_receivebuf and flush_to_ldisc

[Dmitry Vyukov]

On Thu, Feb 4, 2016 at 7:48 PM, Dmitry Vyukov <dvyukov@xxxxxxxxxx> wrote:
>>>>> Hopefully, once the problem with the bad stacktraces are fixed, the
>>>>> actual circular lock dependencies will be clear.
>>
>>> Found a bug in lockdep. Yes, the first stack is correct, and the saved
>>> stack is just a random, unrelated stack. Will mail a fix.
>>
>> Ok, so with the lockdep bug fixed, those reports should now have the
>> correct stack traces.
>>
>> I'd appreciate if you could re-generate the original report, so I can examine
>> if my speculative fix was appropriate.
>>
>> And then if you would re-generate the more recent report, I'll relook at
>> that.
>
> Working hard on it now.

No luck so far. I will leave it running, but I will be OOO whole next week.