[    2.072031] ip (267) used greatest stack depth: 12648 bytes left
[    2.165514] ip (276) used greatest stack depth: 12552 bytes left
[    2.258040] ip (285) used greatest stack depth: 12344 bytes left
[    3.307018] ip (381) used greatest stack depth: 12192 bytes left
[    3.490461] ip (399) used greatest stack depth: 12032 bytes left
[   55.372057] netem: version 1.3
[  720.457303] pm_nl_ctl (16723) used greatest stack depth: 11752 bytes left