[    1.540655] ip (257) used greatest stack depth: 12280 bytes left
[    1.866767] ip (296) used greatest stack depth: 12232 bytes left
[   47.144254] netem: version 1.3
[  639.469269] tc (21048) used greatest stack depth: 11952 bytes left
[  696.417306] pm_nl_ctl (24188) used greatest stack depth: 11872 bytes left