linux-kernel - Re: [PATCH 1/4] [BUGFIX] ftrace/kprobes: Fix not to delete probes if in use

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Date:	Mon, 10 Oct 2011 15:11:18 -0400
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>
Cc:	Arnaldo Carvalho de Melo <acme@...hat.com>,
	Ingo Molnar <mingo@...e.hu>, linux-kernel@...r.kernel.org,
	yrl.pp-manager.tt@...achi.com,
	Frederic Weisbecker <fweisbec@...il.com>,
	Ingo Molnar <mingo@...hat.com>,
	"Frank Ch. Eigler" <fche@...hat.com>
Subject: Re: [PATCH 1/4] [BUGFIX] ftrace/kprobes: Fix not to delete probes
 if in use

On Mon, 2011-10-10 at 23:14 +0900, Masami Hiramatsu wrote:

> > Does this exist in previous kernels? If so, I'll also add the stable tag
> > to it.
> 
> I guess so, since the perf's tracepoint handler locks target module
> while recording, it is required for perf not to remove undergo events.

I was able to trigger this bug in 2.6.39 as well. I'll add the stable
tag to it and post it.

Thanks!

-- Steve


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