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From: Ingo Molnar <mingo@elte.hu>
To: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Linux Kernel <linux-kernel@vger.kernel.org>,
	Steven Rostedt <rostedt@goodmis.org>,
	Andi Kleen <andi@firstfloor.org>
Subject: Re: [PATCH] tracing/function-return-tracer: Add a barrier to ensure return stack index is incremented in memory
Date: Sun, 16 Nov 2008 07:43:04 +0100	[thread overview]
Message-ID: <20081116064304.GC32215@elte.hu> (raw)
In-Reply-To: <491E27E8.7050401@gmail.com>


* Frederic Weisbecker <fweisbec@gmail.com> wrote:

> Impact: Fix possible race condition in ftrace function return tracer
> 
> This fixes a possible race condition if index incrementation
> is not immediately flushed in memory.
> 
> Thanks for Andi Kleen and Steven Rostedt for pointing out this issue
> and give me this solution.
> 
> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
> Cc: Steven Rostedt <rostedt@goodmis.org>

applied, thanks Frederic!

	Ingo

      parent reply	other threads:[~2008-11-16  6:43 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-11-15  1:37 Frederic Weisbecker
2008-11-15  1:48 ` Steven Rostedt
2008-11-16  6:43 ` Ingo Molnar [this message]

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