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To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Greg KH <gregkh@suse.de>, linux-kernel@vger.kernel.org, stable@kernel.org,
       stable-review@kernel.org, akpm@linux-foundation.org,
       alan@lxorguk.ukuu.org.uk, Al Viro <viro@ZenIV.linux.org.uk>,
       Tavis Ormandy <taviso@google.com>, Jeff Dike <jdike@addtoit.com>,
       Julien Tinnes <jln@google.com>, Matt Mackall <mpm@selenic.com>
Subject: Re: [06/11] tty: fix race in tty_fasync
References: <20100126191624.538119758@mini.kroah.org>
	<m1bpggy7bt.fsf@fess.ebiederm.org>
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From: ebiederm@xmission.com (Eric W. Biederman)
Date: Tue, 26 Jan 2010 15:02:38 -0800
In-Reply-To: <alpine.LFD.2.00.1001261357390.3574@localhost.localdomain> (Linus Torvalds's message of "Tue\, 26 Jan 2010 14\:11\:28 -0800 \(PST\)")
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Linus Torvalds <torvalds@linux-foundation.org> writes:

> On Tue, 26 Jan 2010, Eric W. Biederman wrote:
>
>> Greg KH <gregkh@suse.de> writes:
>> 
>> > 2.6.27-stable review patch.  If anyone has any objections, please let us know.
>> 
>> Only that __f_setown by way of f_modown unconditionally enables interrupts.  So
>> without touching f_modown as well in mainline we have nasty sounding lockdep warnings.
>
> Hmm. That seems to be true in mainline too, isn't it?

Yes.  We are having that conversation in the thread:
   "[2.6.33-rc5] starting emacs makes lockdep warning"

Eric