lkml.org 
[lkml]   [2013]   [Apr]   [14]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[ 04/11] tracing: Fix double free when function profile init failed
Date
3.0-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Namhyung Kim <namhyung.kim@lge.com>

commit 83e03b3fe4daffdebbb42151d5410d730ae50bd1 upstream.

On the failure path, stat->start and stat->pages will refer same page.
So it'll attempt to free the same page again and get kernel panic.

Link: http://lkml.kernel.org/r/1364820385-32027-1-git-send-email-namhyung@kernel.org

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Namhyung Kim <namhyung.kim@lge.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
kernel/trace/ftrace.c | 1 -
1 file changed, 1 deletion(-)

--- a/kernel/trace/ftrace.c
+++ b/kernel/trace/ftrace.c
@@ -566,7 +566,6 @@ int ftrace_profile_pages_init(struct ftr
free_page(tmp);
}

- free_page((unsigned long)stat->pages);
stat->pages = NULL;
stat->start = NULL;




\
 
 \ /
  Last update: 2013-04-15 05:21    [W:0.091 / U:1.372 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site