Subject: Re: [PATCH] tty: add lockdep annotations
From: Eric Dumazet <eric.dumazet@gmail.com>
To: Alan Cox <alan@linux.intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        Jens Axboe <jaxboe@fusionio.com>
In-Reply-To: <20120601213844.3abdae5e@bob.linux.org.uk>
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Date: Fri, 01 Jun 2012 22:46:27 +0200
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On Fri, 2012-06-01 at 21:38 +0100, Alan Cox wrote:

> Might be worth checking tty->magic in queue_release_one_tty and the
> entry to release_one_tty
> 
> You can also turn on TTY_PARANOIA_CHECK defines which may show more but
> can also be mistriggered in a few cases.
> 
> What distro setup is this and is it booting to run level 3 or 5. I'm
> just wondering which paths you hit. Some of the distros do weird stuff
> (notably Fedora is totally broken on the console management) and that
> might be hiding a race or two in saner cases where you get more console
> hangups.

Thanks I'll try this.

Distro is Ubuntu 12.04, up2date...

I believe it claims a run level 2


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