[    2.130452] ip (184) used greatest stack depth: 12720 bytes left
[    2.168517] ip (197) used greatest stack depth: 12704 bytes left
[    2.189944] ip (206) used greatest stack depth: 12504 bytes left
[   11.278856] ip (1480) used greatest stack depth: 12296 bytes left
[   16.881564] ip (1667) used greatest stack depth: 12056 bytes left
[   49.992342] netem: version 1.3
[  113.338049] ip (5186) used greatest stack depth: 12024 bytes left
[  538.193330] pm_nl_ctl (24829) used greatest stack depth: 11864 bytes left