[patch 010/100] tracing/core: fix early free of cpumasks

[Chris Wright]

-stable review patch.  If anyone has any objections, please let us know.
---------------------

From: Frederic Weisbecker <fweisbec@xxxxxxxxx>

upstream commit: 2fc1dfbe17e7705c55b7a99da995fa565e26f151

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@xxxxxxx>
Signed-off-by: Frederic Weisbecker <fweisbec@xxxxxxxxx>
LKML-Reference: <1237164303-11476-1-git-send-email-fweisbec@xxxxxxxxx>
Signed-off-by: Ingo Molnar <mingo@xxxxxxx>
Signed-off-by: Chris Wright <chrisw@xxxxxxxxxxxx>
---
 kernel/trace/trace.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -3886,7 +3886,8 @@ __init static int tracer_alloc_buffers(v
 				       &trace_panic_notifier);
 
 	register_die_notifier(&trace_die_notifier);
-	ret = 0;
+
+	return 0;
 
 out_free_cpumask:
 	free_cpumask_var(tracing_cpumask);

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