From: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
To: Vegard Nossum <vegard.nossum@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>,
stable@kernel.org, Andrew Morton <akpm@linux-foundation.org>,
Nick Piggin <npiggin@suse.de>,
Pekka Enberg <penberg@cs.helsinki.fi>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] mm: fix lazy vmap purging (use-after-free error)
Date: Mon, 23 Feb 2009 07:39:17 -0800 [thread overview]
Message-ID: <20090223153917.GB6751@linux.vnet.ibm.com> (raw)
In-Reply-To: <19f34abd0902230024g63aadad2jef16c97a9d792291@mail.gmail.com>
On Mon, Feb 23, 2009 at 09:24:39AM +0100, Vegard Nossum wrote:
> 2009/2/23 Paul E. McKenney <paulmck@linux.vnet.ibm.com>:
> > Hello, Vegard,
> >
> > Could you please try out the following patch? I am not 100% confident
> > of it on non-x86 architectures, nor during the time that non-boot CPUs
> > start up (though this patch should not break non-boot CPUs any more than
> > they might already be broken).
>
> Hi!
>
> This patch fixes it for me. Now I see the huge stream of call_rcu()s,
> followed by a huge stream of kfrees() (after the list traversal has
> completed).
Much better!!! Thank you for checking this out! To say nothing of all
your work finding and isolating the problem!
Thanx, Paul
next prev parent reply other threads:[~2009-02-23 15:39 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-02-20 13:41 Vegard Nossum
2009-02-20 13:50 ` Ingo Molnar
2009-02-20 13:58 ` Pekka Enberg
2009-02-20 14:01 ` Ingo Molnar
2009-02-20 14:18 ` Pekka Enberg
2009-02-20 15:41 ` Paul E. McKenney
2009-02-20 14:51 ` Vegard Nossum
2009-02-20 15:46 ` Paul E. McKenney
2009-02-20 16:04 ` Ingo Molnar
2009-02-20 16:44 ` Paul E. McKenney
2009-02-20 17:14 ` Ingo Molnar
2009-02-20 17:25 ` Paul E. McKenney
2009-02-20 23:51 ` Vegard Nossum
2009-02-21 1:40 ` Paul E. McKenney
2009-02-21 9:30 ` Vegard Nossum
2009-02-21 17:47 ` Paul E. McKenney
2009-02-21 18:08 ` Vegard Nossum
2009-02-21 18:33 ` Paul E. McKenney
2009-02-21 18:37 ` Vegard Nossum
2009-02-22 3:00 ` Paul E. McKenney
2009-02-23 5:17 ` Paul E. McKenney
2009-02-23 8:24 ` Vegard Nossum
2009-02-23 15:39 ` Paul E. McKenney [this message]
2009-02-23 9:07 ` Ingo Molnar
2009-02-23 9:17 ` Andrew Morton
2009-02-23 9:27 ` Ingo Molnar
2009-02-23 15:56 ` Paul E. McKenney
2009-02-23 13:29 ` Nick Piggin
2009-02-23 16:17 ` Paul E. McKenney
2009-02-23 17:20 ` Ingo Molnar
2009-02-23 19:10 ` Andrew Morton
2009-02-23 19:30 ` Paul E. McKenney
2009-02-23 19:59 ` Andrew Morton
2009-02-23 20:12 ` Paul E. McKenney
2009-02-23 20:30 ` Andrew Morton
2009-02-23 19:33 ` Ingo Molnar
2009-02-23 20:04 ` Andrew Morton
2009-02-23 20:09 ` Ingo Molnar
2009-02-23 20:44 ` Paul E. McKenney
2009-02-23 20:43 ` Paul E. McKenney
2009-02-24 3:23 ` Nick Piggin
2009-02-24 3:37 ` Paul E. McKenney
2009-02-21 19:21 ` Vegard Nossum
2009-02-20 16:01 ` Ingo Molnar
2009-02-20 16:49 ` Paul E. McKenney
2009-02-20 15:56 ` Paul E. McKenney
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