[   39.894299] ip (1652) used greatest stack depth: 12192 bytes left
[   42.945132] ip (1905) used greatest stack depth: 12064 bytes left
[   56.318856] netem: version 1.3
[  591.953866] tc (13807) used greatest stack depth: 11936 bytes left
[  656.094300] pm_nl_ctl (16721) used greatest stack depth: 11792 bytes left