[  334.210237][  T118] su (118) used greatest stack depth: 23552 bytes left
[  334.210253][  T118] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322
[  334.210255][  T118] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 118, name: su
[  334.210257][  T118] preempt_count: 2, expected: 0
[  334.210257][  T118] RCU nest depth: 0, expected: 0
[  334.210258][  T118] INFO: lockdep is turned off.
[  334.210259][  T118] irq event stamp: 147344
[  334.210260][  T118] hardirqs last  enabled at (147343): [<ffffffff911e1483>] _raw_spin_unlock_irqrestore+0x53