[    3.856540] ip (695) used greatest stack depth: 12120 bytes left
[    4.337189] ip (838) used greatest stack depth: 12104 bytes left
[   50.385624] netem: version 1.3
[   57.068365] ip (4431) used greatest stack depth: 12088 bytes left
[  527.446952] pm_nl_ctl (24824) used greatest stack depth: 11936 bytes left