[    1.486595] ip (254) used greatest stack depth: 12304 bytes left
[    1.773933] ip (293) used greatest stack depth: 12272 bytes left
[   46.047442] netem: version 1.3
[  542.357910] tc (15679) used greatest stack depth: 11936 bytes left
[  599.887562] pm_nl_ctl (18823) used greatest stack depth: 11880 bytes left