Re: [PATCH 3/3] tty_lock: Localise the lock

[Jiri Slaby]

On 05/07/2012 07:00 PM, Sasha Levin wrote:
>> So whatever your trace is showing, that's not the bug. Something more
>> complicated would appear to be afoot.
> 
> Oddly enough, tty != tty->link, but the lockdep warning triggers.
> 
> Any idea why it might happen?

I think so, both locks are the same lockdep class. So lockdep thinks it
is the same lock. However this is a false positive. I guess we need
mutex_lock_nested...

regards,
-- 
js
suse labs

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