[    1.580616] ip (266) used greatest stack depth: 12560 bytes left
[    1.643172] ip (275) used greatest stack depth: 12528 bytes left
[    1.706081] ip (285) used greatest stack depth: 12512 bytes left
[    1.769017] ip (294) used greatest stack depth: 12400 bytes left
[    2.705045] ip (417) used greatest stack depth: 12272 bytes left
[   47.489429] netem: version 1.3
[  542.164707] tc (15679) used greatest stack depth: 11896 bytes left
[  597.995076] pm_nl_ctl (18824) used greatest stack depth: 11880 bytes left