[    2.549590] ip (222) used greatest stack depth: 12280 bytes left
[    2.585265] ip (230) used greatest stack depth: 11976 bytes left
[   18.044697] ip (1719) used greatest stack depth: 11936 bytes left
[   52.385872] netem: version 1.3
[  558.430771] pm_nl_ctl (24677) used greatest stack depth: 11784 bytes left