[    1.578251] ip (254) used greatest stack depth: 12168 bytes left
[   49.391746] netem: version 1.3
[   88.998324] ip (3731) used greatest stack depth: 12120 bytes left
[  541.850075] tc (16939) used greatest stack depth: 11896 bytes left
[  599.148953] pm_nl_ctl (20240) used greatest stack depth: 11864 bytes left