[    1.442198] ip (221) used greatest stack depth: 12216 bytes left
[    2.850509] ip (569) used greatest stack depth: 11960 bytes left
[   52.251309] netem: version 1.3
[   61.533728] ip (4477) used greatest stack depth: 11936 bytes left
[  569.026723] pm_nl_ctl (24832) used greatest stack depth: 11856 bytes left