[    1.909255] ip (267) used greatest stack depth: 12552 bytes left
[    2.004960] ip (276) used greatest stack depth: 12520 bytes left
[    2.077260] ip (283) used greatest stack depth: 12456 bytes left
[    2.193734] ip (294) used greatest stack depth: 12376 bytes left
[    2.981606] ip (372) used greatest stack depth: 12296 bytes left
[    3.450418] ip (417) used greatest stack depth: 12248 bytes left
[   54.153017] netem: version 1.3
[  643.035691] pm_nl_ctl (18823) used greatest stack depth: 11752 bytes left