[    2.757832] ip (550) used greatest stack depth: 11960 bytes left
[   52.358317] netem: version 1.3
[   58.993719] ip (4476) used greatest stack depth: 11936 bytes left
[  502.243918] tc (21114) used greatest stack depth: 11864 bytes left
[  547.247843] pm_nl_ctl (24824) used greatest stack depth: 11784 bytes left