From 1f61be007e16a5d60b1cf868aa30d87f181e8e14 Mon Sep 17 00:00:00 2001
From: Namhyung Kim <namhyung@kernel.org>
Date: Wed, 11 Jun 2014 17:06:53 +0900
Subject: [PATCH] ftrace: Fix memory leak on failure path in
ftrace_allocate_pages()
As struct ftrace_page is managed in a single linked list, it should
free from the start page.
Link: http://lkml.kernel.org/p/1402474014-28655-1-git-send-email-namhyung@kernel.org
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
---
kernel/trace/ftrace.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c
index 39df3192e725b..e14ff4c1713ee 100644
--- a/kernel/trace/ftrace.c
+++ b/kernel/trace/ftrace.c
@@ -2637,7 +2637,8 @@ ftrace_allocate_pages(unsigned long num_to_init)
return start_pg;
free_pages:
- while (start_pg) {
+ pg = start_pg;
+ while (pg) {
order = get_count_order(pg->size / ENTRIES_PER_PAGE);
free_pages((unsigned long)pg->records, order);
start_pg = pg->next;
--
2.30.2