[    2.221677] ip (188) used greatest stack depth: 12264 bytes left
[    5.273909] ip (1037) used greatest stack depth: 12048 bytes left
[   12.040185] ip (1530) used greatest stack depth: 12008 bytes left
[  539.973185] pm_nl_ctl (26103) used greatest stack depth: 11848 bytes left