linux-kernel - Re: [PATCH 1/1] TTY: don't allow reopen when ldisc is changing

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Message-ID: <20101127235349.GB15818@bombadil.infradead.org>
Date:	Sat, 27 Nov 2010 18:53:49 -0500
From:	Kyle McMartin <kyle@...artin.ca>
To:	Jiri Slaby <jslaby@...e.cz>
Cc:	Kyle McMartin <kyle@...artin.ca>, gregkh@...e.de,
	akpm@...ux-foundation.org, linux-kernel@...r.kernel.org,
	Alan Cox <alan@...rguk.ukuu.org.uk>
Subject: Re: [PATCH 1/1] TTY: don't allow reopen when ldisc is changing

On Sat, Nov 27, 2010 at 04:11:06PM +0100, Jiri Slaby wrote:
> Is it fixed with the attached proof-of-concept patch?
> 
> So you need:
> THIS ONE
> TTY: don't allow reopen when ldisc is changing
> TTY: ldisc, fix open flag handling
> Char: TTY, restore tty_ldisc_wait_idle
> 
> The last one is in 2.6.37-rc2 already.

Shoved them all into a build and sent it out for testing, the tester who
was hitting it very frequently reports he hasn't seen it, so I think
you've managed to close the race window, awesome!

I rebooted my laptop continuously and didn't hit the WARN_ON as
well to confirm.

--Kyle
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