[    2.498313] ip (213) used greatest stack depth: 12272 bytes left
[    3.144752] ip (385) used greatest stack depth: 12080 bytes left
[   29.110465] ip (2088) used greatest stack depth: 12040 bytes left
[   52.268075] netem: version 1.3
[  548.093429] pm_nl_ctl (24673) used greatest stack depth: 11856 bytes left