[    2.576658] ip (220) used greatest stack depth: 12552 bytes left
[    2.618027] ip (228) used greatest stack depth: 12040 bytes left
[   52.120867] netem: version 1.3
[   72.057105] ip (4665) used greatest stack depth: 12008 bytes left
[  555.093523] pm_nl_ctl (24685) used greatest stack depth: 11856 bytes left