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Message-ID: <1374003524.6458.51.camel@gandalf.local.home>
Subject: Re: [RFC][PATCH 0/4] tracing/kprobes/uprobes: Fix race between
 opening probe event files and deleting probe
From: Steven Rostedt <rostedt@goodmis.org>
To: Oleg Nesterov <oleg@redhat.com>
Cc: linux-kernel@vger.kernel.org,
        Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>,
        "zhangwei(Jovi)" <jovi.zhangwei@huawei.com>,
        Jiri Olsa <jolsa@redhat.com>, Peter Zijlstra <a.p.zijlstra@chello.nl>,
        Arnaldo Carvalho de Melo <acme@ghostprotocols.net>,
        Srikar Dronamraju <srikar@linux.vnet.ibm.com>,
        Frederic Weisbecker <fweisbec@gmail.com>,
        Ingo Molnar <mingo@redhat.com>,
        Andrew Morton <akpm@linux-foundation.org>
Date: Tue, 16 Jul 2013 15:38:44 -0400
In-Reply-To: <20130716192200.GA21716@redhat.com>
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On Tue, 2013-07-16 at 21:22 +0200, Oleg Nesterov wrote:

> But tracing_open_generic_file()->trace_array_get() is racy, no?
> Somehow we need to ensure it is safe to use file / file->tr.

Ah crap. Yeah, I see what you mean. It's the race that I described with
deleting private data and using it on open. :-p


> Btw, Steven, what about other pending (and orthogonal changes) ?
> >From Jovi, from me. I see nothing new in linux-trace.git#for-next...

My INBOX is full with too much crap. I thought I grabbed the patches
from you and Jovi, but they may have been something else.

Can you just tell me what the subjects were. My INBOX currently has
>10,000 emails, and it's just getting worse.

-- Steve


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