[    2.234325] ip (199) used greatest stack depth: 12488 bytes left
[   30.793849] ip (2607) used greatest stack depth: 12056 bytes left
[   66.905615] ip (4805) used greatest stack depth: 12016 bytes left
[  545.132240] pm_nl_ctl (26369) used greatest stack depth: 11912 bytes left