[    2.458517] ip (217) used greatest stack depth: 12216 bytes left
[   23.505149] ip (1848) used greatest stack depth: 12168 bytes left
[   52.493497] netem: version 1.3
[   59.942187] ip (4478) used greatest stack depth: 11936 bytes left
[  552.400653] pm_nl_ctl (24826) used greatest stack depth: 11864 bytes left