selftests/ftrace: Update kprobe event error testcase

Update kprobe event error testcase to test if it correctly
finds the exact same probe event.

Link: http://lkml.kernel.org/r/156879695513.31056.1580235733738840126.stgit@devnote2
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>

diff --git a/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_syntax_errors.tc b/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_syntax_errors.tc
index 39ef7ac..8a4025e 100644 (file)
--- a/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_syntax_errors.tc
+++ b/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_syntax_errors.tc
@@ -95,6 +95,7 @@ echo 'p:kprobes/testevent _do_fork abcd=\1' > kprobe_events
 check_error 'p:kprobes/testevent _do_fork ^bcd=\1'     # DIFF_ARG_TYPE
 check_error 'p:kprobes/testevent _do_fork ^abcd=\1:u8' # DIFF_ARG_TYPE
 check_error 'p:kprobes/testevent _do_fork ^abcd=\"foo"'        # DIFF_ARG_TYPE
+check_error '^p:kprobes/testevent _do_fork'    # SAME_PROBE
 fi
 
 exit 0