[    2.173051] ip (255) used greatest stack depth: 12320 bytes left
[    2.538342] ip (278) used greatest stack depth: 12272 bytes left
[   10.697414] ip (912) used greatest stack depth: 12056 bytes left
[   60.590195] netem: version 1.3
[  636.723351] tc (15596) used greatest stack depth: 11936 bytes left
[  701.956721] pm_nl_ctl (18733) used greatest stack depth: 11592 bytes left