linux-kernel - Re: [PATCH v2] tracing/kprobes: Fix trace_probe flags on enable_trace

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Message-ID: <20180725114304.6a5207af@gandalf.local.home>
Date:   Wed, 25 Jul 2018 11:43:04 -0400
From:   Steven Rostedt <rostedt@...dmis.org>
To:     Josh Poimboeuf <jpoimboe@...hat.com>
Cc:     Artem Savkov <asavkov@...hat.com>,
        Masami Hiramatsu <mhiramat@...nel.org>,
        Ingo Molnar <mingo@...hat.com>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] tracing/kprobes: Fix trace_probe flags on
 enable_trace_kprobe() failure

On Wed, 25 Jul 2018 10:35:57 -0500
Josh Poimboeuf <jpoimboe@...hat.com> wrote:

> On Wed, Jul 25, 2018 at 04:20:38PM +0200, Artem Savkov wrote:
> > If enable_trace_kprobe fails to enable the probe in enable_k(ret)probe
> > it returns an error, but does not unset the tp flags it set previously.
> > This results in a probe being considered enabled and failures like being
> > unable to remove the probe through kprobe_events file since probes_open()
> > expects every probe to be disabled.
> > 
> > Signed-off-by: Artem Savkov <asavkov@...hat.com>  
> 
> Reviewed-by: Josh Poimboeuf <jpoimboe@...hat.com>
> 

Thanks Josh!

Queued up and currently being tested.

-- Steve