Comment 2 for bug 2026592

By running the test directly with -vvv flag:

    ./ftracetest -vvv test.d/ftrace/func_event_triggers.tc

We can see this test is failing with:
+ . /home/ubuntu/autotest/client/tmp/ubuntu_kselftests_ftrace/src/linux/tools/testing/selftests/ftrace/test.d/dynevent/test_duplicates.tc
+ echo 0
+ HAVE_KPROBES=0
+ [ -f kprobe_events ]
+ HAVE_KPROBES=1
+ clear_dynamic_events
+ again=1
+ stop=1
+ [ 1 -eq 1 ]
+ stop=2
+ [ 2 -gt 10 ]
+ again=2
+ grep -v ^# dynamic_events
+ read line
+ [ 2 -eq 1 ]
+ echo e:egroup/eevent syscalls/sys_enter_openat file=+0($filename):ustring
+ echo e:egroup/eevent syscalls/sys_enter_openat file=+0($filename):ustring
./ftracetest: 21: echo: echo: I/O error
+ echo e:syscalls/sys_enter_open syscalls/sys_enter_openat file=+0($filename):ustring
./ftracetest: 22: echo: echo: I/O error
+ [ 1 -eq 1 ]
+ echo p:kgroup/kevent vfs_open file=+0($arg2)
./ftracetest: 25: echo: echo: I/O error

Please find attachment for the complete test output.