tracing: Fix off-by-one on allocating stat->pages
Namhyung Kim [Mon, 1 Apr 2013 12:46:24 +0000 (21:46 +0900)]
commit 39e30cd1537937d3c00ef87e865324e981434e5b upstream.

The first page was allocated separately, so no need to start from 0.

Link: http://lkml.kernel.org/r/1364820385-32027-2-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

index a3c1dd9..d193095 100644 (file)
@@ -624,7 +624,7 @@ int ftrace_profile_pages_init(struct ftrace_profile_stat *stat)
 
        pages = DIV_ROUND_UP(functions, PROFILES_PER_PAGE);
 
-       for (i = 0; i < pages; i++) {
+       for (i = 1; i < pages; i++) {
                pg->next = (void *)get_zeroed_page(GFP_KERNEL);
                if (!pg->next)
                        goto out_free;