[    1.457377] ip (230) used greatest stack depth: 11992 bytes left
[    2.171703] ip (415) used greatest stack depth: 11984 bytes left
[   51.066209] netem: version 1.3
[   59.360282] ip (4487) used greatest stack depth: 11960 bytes left
[  552.538294] pm_nl_ctl (24830) used greatest stack depth: 11856 bytes left