[    2.547359] ip (217) used greatest stack depth: 12216 bytes left
[    3.850947] ip (568) used greatest stack depth: 12008 bytes left
[    6.227644] ip (1224) used greatest stack depth: 11960 bytes left
[   52.218853] netem: version 1.3
[  565.534901] pm_nl_ctl (25036) used greatest stack depth: 11864 bytes left