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tracing: Fix error handling to ensure instances can always be removed
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-azl@google.com Cc: stable@vger.kernel.org # 3.10 Cc: Vaibhav Nagarnaik <vnagarnaik@google.com> Cc: David Sharp <dhsharp@google.com> Cc: Alexander Z Lam <lambchop468@gmail.com> Signed-off-by: Alexander Z Lam <azl@google.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
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@ -5973,8 +5973,10 @@ static int new_instance_create(const char *name)
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goto out_free_tr;
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ret = event_trace_add_tracer(tr->dir, tr);
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if (ret)
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if (ret) {
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debugfs_remove_recursive(tr->dir);
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goto out_free_tr;
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}
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init_tracer_debugfs(tr, tr->dir);
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