[    2.571673] ip (253) used greatest stack depth: 12056 bytes left
[    3.738747] ip (554) used greatest stack depth: 12048 bytes left
[   52.142068] netem: version 1.3
[   73.923131] ip (4848) used greatest stack depth: 12024 bytes left
[  524.367255] pm_nl_ctl (24678) used greatest stack depth: 11856 bytes left