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

------------------

From: Alexander Z Lam <a...@google.com>

commit 609e85a70bcd0eedf4ec60639dbcfb1ab011e054 upstream.

Remove debugfs directories for tracing instances during creation if an error
occurs causing the trace_array for that instance to not be added to
ftrace_trace_arrays. If the directory continues to exist after the error, it
cannot be removed because the respective trace_array is not in
ftrace_trace_arrays.

Link: http://lkml.kernel.org/r/1373502874-1706-2-git-send-email-...@google.com

Signed-off-by: Alexander Z Lam <a...@google.com>
Cc: Vaibhav Nagarnaik <vnagarn...@google.com>
Cc: David Sharp <dhsh...@google.com>
Cc: Alexander Z Lam <lambchop...@gmail.com>
Signed-off-by: Steven Rostedt <rost...@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>

---
 kernel/trace/trace.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -5926,8 +5926,10 @@ static int new_instance_create(const cha
                goto out_free_tr;
 
        ret = event_trace_add_tracer(tr->dir, tr);
-       if (ret)
+       if (ret) {
+               debugfs_remove_recursive(tr->dir);
                goto out_free_tr;
+       }
 
        init_tracer_debugfs(tr, tr->dir);
 


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