[    2.621611] ip (222) used greatest stack depth: 12280 bytes left
[    2.730887] ip (258) used greatest stack depth: 12232 bytes left
[    3.907176] ip (559) used greatest stack depth: 12008 bytes left
[   30.511126] ip (2417) used greatest stack depth: 11960 bytes left
[   52.397318] netem: version 1.3
[  519.214565] pm_nl_ctl (24677) used greatest stack depth: 11864 bytes left