Commit 83e03b3f authored Apr 01, 2013 by Namhyung Kim Committed by Steven Rostedt Apr 09, 2013

tracing: Fix double free when function profile init failed

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

Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Namhyung Kim <namhyung.kim@lge.com>
Cc: stable@vger.kernel.org
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>

parent 395b97a3

kernel/trace/ftrace.c

+0 −1

Original line number	Diff line number	Diff line
		@@ -694,7 +694,6 @@ int ftrace_profile_pages_init(struct ftrace_profile_stat *stat)
		free_page(tmp);
		}

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

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