[    2.472102] ip (218) used greatest stack depth: 12216 bytes left
[    3.175232] ip (407) used greatest stack depth: 11992 bytes left
[   30.346050] ip (2434) used greatest stack depth: 11960 bytes left
[   52.180409] netem: version 1.3
[  545.820567] pm_nl_ctl (25036) used greatest stack depth: 11864 bytes left