linux-kernel - Re: [PATCH] tty: add lockdep annotations

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Message-ID: <1338583587.2760.1650.camel@edumazet-glaptop>
Date:	Fri, 01 Jun 2012 22:46:27 +0200
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Alan Cox <alan@...ux.intel.com>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Jens Axboe <jaxboe@...ionio.com>
Subject: Re: [PATCH] tty: add lockdep annotations

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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