[    1.515582] ip (254) used greatest stack depth: 12536 bytes left
[    1.692712] ip (276) used greatest stack depth: 12504 bytes left
[    1.818917] ip (294) used greatest stack depth: 12248 bytes left
[   47.021179] netem: version 1.3
[   92.352937] ip (3451) used greatest stack depth: 12232 bytes left
[  551.301076] tc (15685) used greatest stack depth: 11952 bytes left
[  639.531270] pm_nl_ctl (18832) used greatest stack depth: 11560 bytes left