[    2.511394] ip (222) used greatest stack depth: 12216 bytes left
[    2.568187] ip (239) used greatest stack depth: 12184 bytes left
[    5.570221] ip (1062) used greatest stack depth: 11960 bytes left
[   52.300319] netem: version 1.3
[  537.302956] pm_nl_ctl (25024) used greatest stack depth: 11840 bytes left