linux-kernel - [tip:tracing/urgent] kprobes: Add mcount to the kprobes blacklist

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Message-ID: <tip-8b833c506c05c498d4215e2c260be44225daf6de@git.kernel.org>
Date:	Mon, 15 Feb 2010 05:21:42 GMT
From:	tip-bot for Masami Hiramatsu <mhiramat@...hat.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, hpa@...or.com, mingo@...hat.com,
	ananth@...ibm.com, dle-develop@...ts.sourceforge.net,
	rostedt@...dmis.org, tglx@...utronix.de, mhiramat@...hat.com,
	mingo@...e.hu, systemtap@...rces.redhat.com
Subject: [tip:tracing/urgent] kprobes: Add mcount to the kprobes blacklist

Commit-ID:  8b833c506c05c498d4215e2c260be44225daf6de
Gitweb:     http://git.kernel.org/tip/8b833c506c05c498d4215e2c260be44225daf6de
Author:     Masami Hiramatsu <mhiramat@...hat.com>
AuthorDate: Fri, 5 Feb 2010 01:24:34 -0500
Committer:  Ingo Molnar <mingo@...e.hu>
CommitDate: Mon, 15 Feb 2010 05:45:49 +0100

kprobes: Add mcount to the kprobes blacklist

Since mcount function can be called from everywhere,
it should be blacklisted. Moreover, the "mcount" symbol
is a special symbol name. So, it is better to put it in
the generic blacklist.

Signed-off-by: Masami Hiramatsu <mhiramat@...hat.com>
Cc: systemtap <systemtap@...rces.redhat.com>
Cc: DLE <dle-develop@...ts.sourceforge.net>
Cc: Ananth N Mavinakayanahalli <ananth@...ibm.com>
Cc: Steven Rostedt <rostedt@...dmis.org>
LKML-Reference: <20100205062433.3745.36726.stgit@...p-100-2-132.bos.redhat.com>
Signed-off-by: Ingo Molnar <mingo@...e.hu>
---
 kernel/kprobes.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/kernel/kprobes.c b/kernel/kprobes.c
index b7df302..c4b4343 100644
--- a/kernel/kprobes.c
+++ b/kernel/kprobes.c
@@ -93,6 +93,7 @@ static struct kprobe_blackpoint kprobe_blacklist[] = {
 	{"native_get_debugreg",},
 	{"irq_entries_start",},
 	{"common_interrupt",},
+	{"mcount",},	/* mcount can be called from everywhere */
 	{NULL}    /* Terminator */
 };
 
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