From: Ingo Molnar <mingo@elte.hu>
To: Steven Rostedt <rostedt@goodmis.org>
Cc: mingo@redhat.com, hpa@zytor.com, linux-kernel@vger.kernel.org,
fweisbec@gmail.com, tglx@linutronix.de,
Johannes Berg <johannes@sipsolutions.net>,
Linus Torvalds <torvalds@linux-foundation.org>,
Greg KH <gregkh@suse.de>,
linux-tip-commits@vger.kernel.org, stable@kernel.org
Subject: Re: [tip:tracing/syscalls] tracing/core: fix early free of cpumasks
Date: Thu, 2 Apr 2009 05:17:11 +0200 [thread overview]
Message-ID: <20090402031711.GB21545@elte.hu> (raw)
In-Reply-To: <alpine.DEB.2.00.0904012203250.30963@gandalf.stny.rr.com>
* Steven Rostedt <rostedt@goodmis.org> wrote:
>
> On Thu, 2 Apr 2009, Ingo Molnar wrote:
>
> >
> > * Steven Rostedt <rostedt@goodmis.org> wrote:
> >
> > > This never made it into 2.6.29, nor do I see it yet in mainline.
> > >
> > > This can cause unpredictable results with ftrace. We are freeing a
> > > cpu mask that will be later used.
> >
> > Yes ... but CONFIG_OFFSTACK is only possible as a debug option right
> > now. So it's far less serious of an issue, it needs 2-3 unlikely
> > features to be combined.
>
> And unfortunately for Johannes, he must have had all those
> features configured :-/ He spent pretty much the entire day trying
> to figure out why ftrace was broken.
Okay - will forward the fix to -stable once it's upstream.
Ingo
prev parent reply other threads:[~2009-04-02 3:18 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-03-16 0:45 [PATCH] " Frederic Weisbecker
2009-03-16 8:19 ` [tip:tracing/syscalls] " Frederic Weisbecker
2009-04-02 1:12 ` Steven Rostedt
2009-04-02 1:55 ` Ingo Molnar
2009-04-02 2:42 ` Steven Rostedt
2009-04-02 3:17 ` Ingo Molnar [this message]
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