[    1.531762] ip (253) used greatest stack depth: 12424 bytes left
[    1.680434] ip (266) used greatest stack depth: 12392 bytes left
[    1.928100] ip (293) used greatest stack depth: 12216 bytes left
[   37.398703] ip (2157) used greatest stack depth: 11976 bytes left
[   49.535545] ip (3066) used greatest stack depth: 11944 bytes left
[   49.757643] netem: version 1.3
[  538.209771] tc (16940) used greatest stack depth: 11896 bytes left
[  595.078543] pm_nl_ctl (20241) used greatest stack depth: 11864 bytes left