[    1.980540] ip (256) used greatest stack depth: 12384 bytes left
[    2.012607] ip (259) used greatest stack depth: 12320 bytes left
[    2.303807] ip (279) used greatest stack depth: 12272 bytes left
[   60.828574] netem: version 1.3
[  615.894704] tc (15596) used greatest stack depth: 11936 bytes left
[  680.355345] pm_nl_ctl (18735) used greatest stack depth: 11872 bytes left