From: Frederic Weisbecker <fweisbec@gmail.com>
Date: Mon, 16 Mar 2009 00:45:03 +0000 (+0100)
Subject: tracing/core: fix early free of cpumasks
X-Git-Tag: upstream/snapshot3+hdmi~18679^2~228^2
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=2fc1dfbe17e7705c55b7a99da995fa565e26f151;p=platform%2Fadaptation%2Frenesas_rcar%2Frenesas_kernel.git

tracing/core: fix early free of cpumasks

Impact: fix crashes when tracing cpumasks

While ring-buffer allocation, the cpumasks are allocated too,
including the tracing cpumask and the per-cpu file mask handler.
But these cpumasks are freed accidentally just after.
Fix it.

Reported-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
LKML-Reference: <1237164303-11476-1-git-send-email-fweisbec@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---

diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index c0cf946..ae32d3b 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -4125,7 +4125,8 @@ __init static int tracer_alloc_buffers(void)
 				       &trace_panic_notifier);
 
 	register_die_notifier(&trace_die_notifier);
-	ret = 0;
+
+	return 0;
 
 out_free_cpumask:
 	free_cpumask_var(tracing_reader_cpumask);