[   30.893046] ip (2904) used greatest stack depth: 12344 bytes left
[   50.372968] netem: version 1.3
[   56.660886] ip (4419) used greatest stack depth: 12328 bytes left
[   97.899370] ip (5189) used greatest stack depth: 12072 bytes left
[  523.191505] pm_nl_ctl (24828) used greatest stack depth: 11944 bytes left