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Subject[PATCH 1/3] tracing: Fix double free when function profile init failed
Date
From: Namhyung Kim <namhyung.kim@lge.com>

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.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
---
kernel/trace/ftrace.c | 1 -
1 file changed, 1 deletion(-)

diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c
index 25770824598f..65bc47472b1b 100644
--- a/kernel/trace/ftrace.c
+++ b/kernel/trace/ftrace.c
@@ -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;

--
1.7.11.7


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