[    1.724995] ip (267) used greatest stack depth: 12392 bytes left
[    1.991238] ip (297) used greatest stack depth: 12312 bytes left
[    3.141372] ip (429) used greatest stack depth: 12248 bytes left
[    4.387730] ip (567) used greatest stack depth: 12216 bytes left
[    5.200129] ip (660) used greatest stack depth: 12168 bytes left
[   51.332294] netem: version 1.3
[  569.322729] tc (16940) used greatest stack depth: 11896 bytes left
[  625.652505] pm_nl_ctl (20241) used greatest stack depth: 11864 bytes left