[    2.556987] ip (240) used greatest stack depth: 12008 bytes left
[    3.165768] ip (398) used greatest stack depth: 11960 bytes left
[   52.274032] netem: version 1.3
[   89.626180] ip (4854) used greatest stack depth: 11936 bytes left
[  553.465373] pm_nl_ctl (24664) used greatest stack depth: 11832 bytes left