[    1.553000] ip (255) used greatest stack depth: 12168 bytes left
[   50.714091] netem: version 1.3
[  117.238944] ip (4054) used greatest stack depth: 12120 bytes left
[  555.270039] tc (16942) used greatest stack depth: 11928 bytes left
[  611.612460] pm_nl_ctl (20243) used greatest stack depth: 11880 bytes left