From: Atsushi Tsuji <a-tsuji@bk.jp.nec.com>
Date: Tue, 15 Sep 2009 10:06:30 +0000 (+0900)
Subject: tracing: Fix minor bugs for __unregister_ftrace_function_probe
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=b36461da2a0389149d7f88f3cbc05a30d1db9faa;p=GitHub%2Fexynos8895%2Fandroid_kernel_samsung_universal8895.git
tracing: Fix minor bugs for __unregister_ftrace_function_probe
Fix the condition of strcmp for "*".
Also fix NULL pointer dereference when glob is NULL.
Signed-off-by: Atsushi Tsuji <a-tsuji@bk.jp.nec.com>
LKML-Reference: <4AAF6726.5090905@bk.jp.nec.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
---
diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c
index 8b23d5670088..f7ab7fc162cc 100644
--- a/kernel/trace/ftrace.c
+++ b/kernel/trace/ftrace.c
@@ -2062,9 +2062,9 @@ __unregister_ftrace_function_probe(char *glob, struct ftrace_probe_ops *ops,
int i, len = 0;
char *search;
- if (glob && (strcmp(glob, "*") || !strlen(glob)))
+ if (glob && (strcmp(glob, "*") == 0 || !strlen(glob)))
glob = NULL;
- else {
+ else if (glob) {
int not;
type = ftrace_setup_glob(glob, strlen(glob), &search, ¬);