[    3.501299] ip (559) used greatest stack depth: 11992 bytes left
[   31.228595] ip (2737) used greatest stack depth: 11960 bytes left
[   50.284790] ip (3873) used greatest stack depth: 11944 bytes left
[  555.901535] pm_nl_ctl (27790) used greatest stack depth: 11800 bytes left