[    2.583839] ip (215) used greatest stack depth: 12312 bytes left
[    3.316880] ip (406) used greatest stack depth: 12072 bytes left
[    4.499509] ip (711) used greatest stack depth: 12064 bytes left
[    5.151495] ip (890) used greatest stack depth: 12040 bytes left
[   52.625290] netem: version 1.3
[   71.880527] ip (4662) used greatest stack depth: 12032 bytes left
[  552.682647] pm_nl_ctl (24674) used greatest stack depth: 11856 bytes left