[    2.381595] ip (277) used greatest stack depth: 12360 bytes left
[    2.496939] ip (286) used greatest stack depth: 12344 bytes left
[   55.386332] netem: version 1.3
[  554.888282] ip (10833) used greatest stack depth: 12304 bytes left
[  623.228773] tc (12617) used greatest stack depth: 11936 bytes left