[    1.766467] ip (239) used greatest stack depth: 12832 bytes left
[    1.817546] ip (245) used greatest stack depth: 12368 bytes left
[    2.230894] ip (274) used greatest stack depth: 12336 bytes left
[   10.616964] ip (961) used greatest stack depth: 12176 bytes left
[  709.691430] hrtimer: interrupt took 5842370 ns