[    1.504272] ip (254) used greatest stack depth: 12168 bytes left
[   52.387606] netem: version 1.3
[   72.996184] ip (3388) used greatest stack depth: 12120 bytes left
[  575.330250] tc (16941) used greatest stack depth: 11872 bytes left
[  632.396101] pm_nl_ctl (20241) used greatest stack depth: 11864 bytes left