[    2.508212] ip (221) used greatest stack depth: 12272 bytes left
[    2.541858] ip (229) used greatest stack depth: 12040 bytes left
[    4.981069] ip (890) used greatest stack depth: 12032 bytes left
[   52.757779] netem: version 1.3
[  523.596726] pm_nl_ctl (24684) used greatest stack depth: 11856 bytes left