linux-kernel - Re: FTRACE_WARN_ON((rec->flags & ~FTRACE_FL

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Message-ID: <20130828095833.103ccdf0@gandalf.local.home>
Date:	Wed, 28 Aug 2013 09:58:33 -0400
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Steven Rostedt <rostedt@...dmis.org>
Cc:	Dave Jones <davej@...hat.com>,
	Linux Kernel <linux-kernel@...r.kernel.org>
Subject: Re: FTRACE_WARN_ON((rec->flags & ~FTRACE_FL_MASK) == 0))

On Wed, 28 Aug 2013 09:54:08 -0400
Steven Rostedt <rostedt@...dmis.org> wrote:
> 
> OK, this is a hint. The __unregister_ftrace_function returned an error
> code, and called ftrace_shutdown(). This is an error path that is not
> tested much. So perhaps you did find another place that can cause the
> accounting to get out of sync.

I'll take that back. The ftrace_shutdown() is called on success, thus
this is a normal path. I have to find out what perf is doing. Do you
have any clue to what calls are being made to perf?

-- Steve

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