[    1.878369] ip (254) used greatest stack depth: 12280 bytes left
[    2.228948] ip (286) used greatest stack depth: 12232 bytes left
[   52.532048] netem: version 1.3
[  642.592072] tc (21523) used greatest stack depth: 11952 bytes left
[  699.740697] pm_nl_ctl (24661) used greatest stack depth: 11872 bytes left