kernel tests failures

[honggyukim]

I don't usually run kernel tests but recently found that many tests are broken as follows.

$ sudo ./runtest.py -j 8 kernel
Start 15 tests with 8 worker

Compiler                  gcc                                           clang
Runtime test case         pg             finstrument-fu fpatchable-fun  pg             finstrument-fu fpatchable-fun
------------------------: O0 O1 O2 O3 Os O0 O1 O2 O3 Os O0 O1 O2 O3 Os  O0 O1 O2 O3 Os O0 O1 O2 O3 Os O0 O1 O2 O3 Os
022 filter_kernel       : OK OK OK OK OK OK OK OK OK OK OK OK OK OK OK  OK OK OK OK OK OK OK OK OK OK OK OK OK OK OK
079 replay_kernel_D     : NG NG NG NG NG NG NG NG NG NG NG NG NG NG NG  NG NG NG NG NG NG NG NG NG NG NG NG NG NG NG
080 replay_kernel_D2    : OK OK OK OK OK OK OK OK OK OK OK OK OK OK OK  OK OK OK OK OK OK OK OK OK OK OK OK OK OK OK
081 kernel_depth        : NG NG NG NG NG NG NG NG NG NG NG NG NG NG NG  NG NG NG NG NG NG NG NG NG NG NG NG NG NG NG
103 dump_kernel         : OK OK OK OK OK OK OK OK OK OK NG OK OK OK OK  OK OK OK OK OK OK OK OK NG NG NG OK OK OK OK
104 graph_kernel        : NG NG NG NG NG NG NG NG NG NG NG NG NG NG NG  NG NG NG NG NG NG NG NG NG NG NG NG NG NG NG
111 kernel_tid          : NG NG NG NG NG NG NG NG NG NG NG NG NG NG NG  NG NG NG NG NG NG NG NG NG NG NG NG NG NG NG
132 trigger_kernel      : NG NG NG NG NG NG NG NG NG NG NG NG NG NG NG  NG NG NG NG NG NG NG NG NG NG NG NG NG NG NG
137 kernel_tid_update   : TM TM TM TM TM TM TM TM TM TM TM TM TM TM TM  TM TM TM TM TM TM TM TM TM TM TM TM TM TM TM
138 kernel_dynamic      : OK OK OK OK OK OK OK OK OK OK NG NG NG NG NG  OK OK OK OK OK OK OK OK OK OK NG NG NG NG NG
139 kernel_dynamic2     : OK OK OK OK OK OK OK OK OK OK NG NG NG NG NG  OK OK OK OK OK OK OK OK OK OK NG NG NG NG NG
143 recv_kernel         : NG NG NG NG NG NG NG NG NG NG NG NG NG NG NG  NG NG NG NG NG NG NZ NG NG NZ NG NG NG NZ NG
148 event_kernel        : OK OK OK OK OK OK OK OK OK OK OK OK OK OK OK  OK OK OK OK OK OK OK OK OK OK OK OK OK OK OK
149 event_kernel2       : OK OK OK OK OK OK OK OK OK OK OK OK OK OK OK  OK OK OK OK OK OK OK OK OK OK OK OK OK OK OK
174 replay_filter_kernel: NG NG NG NG NG NG NG NG NG NG NG NG NG NG NG  NG NG NG NG NG NG NG NG NG NG NG NG NG NG NG

[namhyung]

Right, I already fixed some failing tests but I'm afraid others might need non-trivial work.