From: Steven Rostedt <rostedt@goodmis.org>
To: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Artem Savkov <asavkov@redhat.com>, Ingo Molnar <mingo@redhat.com>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] kprobes: fix trace_probe flags in enable_trace_kprobe
Date: Wed, 25 Jul 2018 10:05:41 -0400 [thread overview]
Message-ID: <20180725100541.36f27954@gandalf.local.home> (raw)
In-Reply-To: <20180725135632.zmjq7cuqc7eshpsh@treble>
On Wed, 25 Jul 2018 08:56:32 -0500
Josh Poimboeuf <jpoimboe@redhat.com> wrote:
> On Wed, Jul 25, 2018 at 12:28:26PM +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 previosly.
>
> "previously"
I tentatively added this to my queue. I updated the subject as:
tracing/kprobes: Fix trace_probe flags on enable_trace_kprobe() failure
But yeah, that needs to be fixed.
>
> > @@ -424,6 +423,16 @@ enable_trace_kprobe(struct trace_kprobe *tk, struct trace_event_file *file)
> > else
> > ret = enable_kprobe(&tk->rp.kp);
> > }
> > +
> > + if (ret) {
> > + if (file) {
> > + list_del(&link->list);
>
> Should this be list_del_rcu(), since it was added to the list with
> list_add_tail_rcu()?
>
Good catch. Yes, that should be list_del_rcu().
Artem,
Can you send a v2 with the changes.
Thanks,
-- Steve
prev parent reply other threads:[~2018-07-25 14:05 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-07-25 10:28 [PATCH] kprobes: fix trace_probe flags in enable_trace_kprobe Artem Savkov
2018-07-25 13:21 ` Steven Rostedt
2018-07-25 15:35 ` Masami Hiramatsu
2018-07-25 13:56 ` Josh Poimboeuf
2018-07-25 14:05 ` Steven Rostedt [this message]
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