[    2.538712] ip (223) used greatest stack depth: 12216 bytes left
[    2.618928] ip (250) used greatest stack depth: 12008 bytes left
[   52.115909] netem: version 1.3
[   58.319343] ip (4479) used greatest stack depth: 11984 bytes left
[  531.479280] pm_nl_ctl (24686) used greatest stack depth: 11784 bytes left