[    1.471687] ip (254) used greatest stack depth: 12168 bytes left
[   33.383685] ip (1862) used greatest stack depth: 11944 bytes left
[   48.282227] netem: version 1.3
[  560.669659] tc (16942) used greatest stack depth: 11912 bytes left
[  615.695565] pm_nl_ctl (20243) used greatest stack depth: 11856 bytes left