linux-kernel - Re: [PATCH -tip v8 03/26] kprobes: Prohibit probing on .entry.text code

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Message-ID: <20140324145551.1af360bb@gandalf.local.home>
Date:	Mon, 24 Mar 2014 14:55:51 -0400
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>
Cc:	linux-kernel@...r.kernel.org, Ingo Molnar <mingo@...nel.org>,
	Andi Kleen <andi@...stfloor.org>,
	Ananth N Mavinakayanahalli <ananth@...ibm.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Frederic Weisbecker <fweisbec@...il.com>, x86@...nel.org,
	Sandeepa Prabhu <sandeepa.prabhu@...aro.org>, fche@...hat.com,
	mingo@...hat.com, Al Viro <viro@...iv.linux.org.uk>,
	systemtap@...rceware.org, "H. Peter Anvin" <hpa@...or.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Seiji Aguchi <seiji.aguchi@....com>
Subject: Re: [PATCH -tip v8 03/26] kprobes: Prohibit probing on .entry.text
 code

On Wed, 05 Mar 2014 20:59:04 +0900
Masami Hiramatsu <masami.hiramatsu.pt@...achi.com> wrote:

> .entry.text is a code area which is used for interrupt/syscall
> entries, and there are many sensitive codes.
> Thus, it is better to prohibit probing on all of such codes
> instead of a part of that.
> Since some symbols are already registered on kprobe blacklist,
> this also removes them from the blacklist.
> 
> Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>
> Cc: Thomas Gleixner <tglx@...utronix.de>
> Cc: Ingo Molnar <mingo@...hat.com>
> Cc: "H. Peter Anvin" <hpa@...or.com>
> Cc: Ananth N Mavinakayanahalli <ananth@...ibm.com>
> Cc: Al Viro <viro@...iv.linux.org.uk>
> Cc: Seiji Aguchi <seiji.aguchi@....com>
> Cc: Peter Zijlstra <peterz@...radead.org>
> Cc: Frederic Weisbecker <fweisbec@...il.com>
> ---

Reviewed-by: Steven Rostedt <rostedt@...dmis.org>

-- Steve
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