[    2.177411] ip (197) used greatest stack depth: 12176 bytes left
[    3.276794] ip (534) used greatest stack depth: 12112 bytes left
[   29.623521] ip (2565) used greatest stack depth: 12088 bytes left
[   50.170119] netem: version 1.3
[  525.080400] pm_nl_ctl (24823) used greatest stack depth: 11936 bytes left