linux-kernel - [tip:perf/core] kprobes: Add mcount to the kprobes blacklist

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Message-ID: <tip-5ecaafdbf44b1ba400b746c60c401d54c7ee0863@git.kernel.org>
Date:	Fri, 5 Feb 2010 07:48:40 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:perf/core] kprobes: Add mcount to the kprobes blacklist

Commit-ID:  5ecaafdbf44b1ba400b746c60c401d54c7ee0863
Gitweb:     http://git.kernel.org/tip/5ecaafdbf44b1ba400b746c60c401d54c7ee0863
Author:     Masami Hiramatsu <mhiramat@...hat.com>
AuthorDate: Fri, 5 Feb 2010 01:24:34 -0500
Committer:  Ingo Molnar <mingo@...e.hu>
CommitDate: Fri, 5 Feb 2010 08:13:57 +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 c3340e8..ccec774 100644
--- a/kernel/kprobes.c
+++ b/kernel/kprobes.c
@@ -94,6 +94,7 @@ 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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