[    2.481178] ip (274) used greatest stack depth: 12352 bytes left
[   41.890487] ip (1663) used greatest stack depth: 12200 bytes left
[   55.029508] netem: version 1.3
[   84.185325] ip (2623) used greatest stack depth: 12072 bytes left
[  592.995937] tc (12614) used greatest stack depth: 11936 bytes left