[   31.284151] ip (2929) used greatest stack depth: 12008 bytes left
[   51.319178] netem: version 1.3
[   58.572380] ip (4479) used greatest stack depth: 11992 bytes left
[   58.594695] ip (4488) used greatest stack depth: 11960 bytes left
[  546.796599] pm_nl_ctl (24823) used greatest stack depth: 11856 bytes left