Merge tag 'trace-v4.14-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace

Pull tracing fix from Steven Rostedt:
 "Testing a new trace event format, I triggered a bug by doing:

    # modprobe trace-events-sample
    # echo 1 > /sys/kernel/debug/tracing/events/sample-trace/enable
    # rmmod trace-events-sample

  This would cause an oops. The issue is that I added another trace
  event sample that reused a reg function of another trace event to
  create a thread to call the tracepoints. The problem was that the reg
  function couldn't handle nested calls (reg; reg; unreg; unreg;) and
  created two threads (instead of one) and only removed one on exit.

  This isn't a critical bug as the bug is only in sample code. But
  sample code should be free of known bugs to prevent others from
  copying it. This is why this is also marked for stable"

* tag 'trace-v4.14-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
  tracing/samples: Fix creation and deletion of simple_thread_fn creation

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