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The check that tests if ftrace_trace_arrays is empty in top_trace_array(), uses the .prev pointer: if (list_empty(ftrace_trace_arrays.prev)) instead of testing the variable itself: if (list_empty(&ftrace_trace_arrays)) Although it is technically correct, it is awkward and confusing. Use the proper method. Link: http://lkml.kernel.org/r/87oay1bas8.fsf@sejong.aot.lge.com Reported-by: Namhyung Kim <namhyung@gmail.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>