[    1.704259] ip (254) used greatest stack depth: 12168 bytes left
[   51.739235] netem: version 1.3
[  547.874744] ip (16543) used greatest stack depth: 12120 bytes left
[  551.841841] tc (16940) used greatest stack depth: 11896 bytes left
[  613.595680] pm_nl_ctl (20241) used greatest stack depth: 11856 bytes left