[   15.497770] ip (255) used greatest stack depth: 12392 bytes left
[   15.931945] ip (286) used greatest stack depth: 12344 bytes left
[   71.885794] netem: version 1.3
[  618.658554] tc (15486) used greatest stack depth: 11936 bytes left
[  686.745943] pm_nl_ctl (18609) used greatest stack depth: 11864 bytes left