[   48.947197] netem: version 1.3
[   57.857067] ip (3224) used greatest stack depth: 12120 bytes left
[  525.130974] ip (15597) used greatest stack depth: 12024 bytes left
[  566.660391] tc (16940) used greatest stack depth: 11896 bytes left
[  623.541071] pm_nl_ctl (20241) used greatest stack depth: 11784 bytes left