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Subject: Re: [PATCH] hvc_console fix to protect hvc_write against ldisc
	write after hvc_close
From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: "Theodore Ts'o" <tytso@mit.edu>
Cc: Ryan Arnold <rsa@us.ibm.com>, Andrew Morton <akpm@osdl.org>,
       Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
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Date: Wed, 15 Sep 2004 22:36:13 +0100
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On Mer, 2004-09-15 at 21:41, Theodore Ts'o wrote:
> The current (I can't speak to what Alan Cox is going to change) rules
> with tty drivers is that tty drivers are supposed to close the line
> discpline in their close routines. 

That has no actual effect in the real world because the ldisc can in
part be running on another processor at the same time in another
function.  This is a crash case seen on 2.4 in the real world.

Alan