[    2.470059] ip (218) used greatest stack depth: 12576 bytes left
[    2.549753] ip (245) used greatest stack depth: 12080 bytes left
[    3.169826] ip (413) used greatest stack depth: 12040 bytes left
[   52.196059] netem: version 1.3
[  547.613743] pm_nl_ctl (24669) used greatest stack depth: 11856 bytes left