[    2.565246] ip (231) used greatest stack depth: 12136 bytes left
[   17.924903] ip (1710) used greatest stack depth: 11960 bytes left
[   52.189494] netem: version 1.3
[   64.728875] ip (4666) used greatest stack depth: 11936 bytes left
[  536.785803] pm_nl_ctl (24834) used greatest stack depth: 11864 bytes left