From: daw@cs.berkeley.edu (David Wagner)
To: linux-kernel@vger.kernel.org
Subject: Re: [RFC] convert ftrace syscall tracer to TRACE_EVENT()
Date: Sat, 9 May 2009 17:44:32 +0000 (UTC) [thread overview]
Message-ID: <gu4fe0$ji7$1@taverner.cs.berkeley.edu> (raw)
In-Reply-To: 20090509135046.GA2344@Krystal
Mathieu Desnoyers wrote:
> I would expect to use copy_string_from_user (for strings)
> and copy_from_user for structures, because without any strings
> (especially), the trace information become much less useful.
Why isn't this racey?
(Copying from user space twice can give you two different results.)
next prev parent reply other threads:[~2009-05-09 17:44 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-05-08 21:03 [RFC] convert ftrace syscall tracer to TRACE_EVENT() Jason Baron
2009-05-09 8:37 ` Ingo Molnar
2009-05-09 12:53 ` Frédéric Weisbecker
2009-05-09 13:33 ` Ingo Molnar
2009-05-09 13:50 ` Mathieu Desnoyers
2009-05-09 14:06 ` Frédéric Weisbecker
2009-05-09 14:15 ` Ingo Molnar
2009-05-09 14:29 ` Mathieu Desnoyers
2009-05-09 15:01 ` Frédéric Weisbecker
2009-05-09 15:24 ` Mathieu Desnoyers
2009-05-09 14:47 ` Frédéric Weisbecker
2009-05-09 17:44 ` David Wagner [this message]
2009-05-09 14:02 ` Frédéric Weisbecker
2009-05-09 14:07 ` Ingo Molnar
2009-05-09 14:12 ` Frédéric Weisbecker
2009-05-09 15:36 ` Frank Ch. Eigler
2009-05-09 15:57 ` Mathieu Desnoyers
2009-05-09 16:32 ` Mathieu Desnoyers
2009-05-10 6:59 ` Tom Zanussi
2009-05-11 22:16 ` Jason Baron
2009-05-12 2:44 ` Roland McGrath
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