[  104.070586][  T110] su (110) used greatest stack depth: 24104 bytes left
[  104.070604][  T110] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322
[  104.070606][  T110] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 110, name: su
[  104.070607][  T110] preempt_count: 2, expected: 0
[  104.070608][  T110] RCU nest depth: 0, expected: 0
[  104.070609][  T110] INFO: lockdep is turned off.
[  104.070610][  T110] irq event stamp: 135522
[  104.070611][  T110] hardirqs last  enabled at (135521): [<ffffffff9522e543>] _raw_spin_unlock_irqrestore+0x53/0x80