[    1.945489] ip (254) used greatest stack depth: 12296 bytes left
[    2.408630] ip (295) used greatest stack depth: 12248 bytes left
[   54.453560] netem: version 1.3
[  551.478455] tc (15678) used greatest stack depth: 11952 bytes left
[  608.955498] pm_nl_ctl (18823) used greatest stack depth: 11872 bytes left