From: Masami Hiramatsu <mhiramat@redhat.com>
Date: Fri, 5 Feb 2010 06:24:34 +0000 (-0500)
Subject: kprobes: Add mcount to the kprobes blacklist
X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=8b833c506c05c498d4215e2c260be44225daf6de;p=deliverable%2Flinux.git

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@redhat.com>
Cc: systemtap <systemtap@sources.redhat.com>
Cc: DLE <dle-develop@lists.sourceforge.net>
Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
LKML-Reference: <20100205062433.3745.36726.stgit@dhcp-100-2-132.bos.redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---

diff --git a/kernel/kprobes.c b/kernel/kprobes.c
index b7df302a0204..c4b43430d393 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 */
 };