[    1.748680] ip (269) used greatest stack depth: 12552 bytes left
[    1.832481] ip (279) used greatest stack depth: 12472 bytes left
[    1.911254] ip (288) used greatest stack depth: 12024 bytes left
[   28.672459] ip (1659) used greatest stack depth: 11944 bytes left
[   49.359598] netem: version 1.3
[  607.560372] pm_nl_ctl (20240) used greatest stack depth: 11864 bytes left