[    2.738925] ip (296) used greatest stack depth: 12360 bytes left
[    4.195480] ip (401) used greatest stack depth: 12344 bytes left
[   26.599220] ip (1267) used greatest stack depth: 12288 bytes left
[   57.846404] netem: version 1.3
[  681.628225] pm_nl_ctl (16879) used greatest stack depth: 11848 bytes left