[    1.556462] ip (253) used greatest stack depth: 12168 bytes left
[    4.064870] ip (522) used greatest stack depth: 12120 bytes left
[    5.494778] ip (677) used greatest stack depth: 11944 bytes left
[   51.668245] netem: version 1.3
[  556.875471] tc (16940) used greatest stack depth: 11888 bytes left
[  614.180180] pm_nl_ctl (20241) used greatest stack depth: 11848 bytes left