[    1.859392] ip (242) used greatest stack depth: 12608 bytes left
[    2.456004] ip (276) used greatest stack depth: 12336 bytes left
[    4.880901] ip (408) used greatest stack depth: 12320 bytes left
[    7.882366] ip (663) used greatest stack depth: 12288 bytes left
[   23.545199] ip (2368) used greatest stack depth: 12256 bytes left
[   26.352047] ip (2622) used greatest stack depth: 12048 bytes left
[  715.155213] hrtimer: interrupt took 3206253 ns