[    2.472789] ip (276) used greatest stack depth: 12360 bytes left
[    7.091248] ip (591) used greatest stack depth: 12344 bytes left
[   57.915864] netem: version 1.3
[  125.797300] ip (3262) used greatest stack depth: 12288 bytes left
[  601.517252] tc (12963) used greatest stack depth: 11936 bytes left