[    2.573162] ip (221) used greatest stack depth: 12272 bytes left
[    2.654054] ip (247) used greatest stack depth: 12080 bytes left
[    3.793703] ip (548) used greatest stack depth: 12056 bytes left
[   52.135016] netem: version 1.3
[  111.945698] ip (5216) used greatest stack depth: 12024 bytes left
[  542.340093] pm_nl_ctl (24677) used greatest stack depth: 11856 bytes left