[    2.496792] ip (286) used greatest stack depth: 12360 bytes left
[    3.863595] ip (391) used greatest stack depth: 12344 bytes left
[    6.962132] ip (616) used greatest stack depth: 12192 bytes left
[    9.878525] ip (834) used greatest stack depth: 12120 bytes left
[   57.060976] netem: version 1.3
[  687.059391] pm_nl_ctl (16720) used greatest stack depth: 11592 bytes left