[  309.089960][  T111] su (111) used greatest stack depth: 23776 bytes left
[  309.089976][  T111] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322
[  309.089981][  T111] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 111, name: su
[  309.089983][  T111] preempt_count: 2, expected: 0
[  309.089984][  T111] RCU nest depth: 0, expected: 0
[  309.089984][  T111] INFO: lockdep is turned off.
[  309.089986][  T111] irq event stamp: 134258
[  309.089987][  T111] hardirqs last  enabled at (134257): [<ffffffff8fb47483>] _raw_spin_unlock_irqrestore+0x53/0x80
[  309.089995][  T111] hardirqs last disabled at (134258): [<ffffffff8fb29b26>] __schedule+0x1246/0x20e0
[  309.089998][  T111] softirqs last  enabled at (134150): [<ffffffff8d2d0ec9>] fpu_clone+0xd9/0x410
[  309.090001][  T111] softirqs last disabled at (134148): [<ffffffff8d2d0e72>] fpu_clone+0x82/0x410
[  309.090003][  T111] Preemption disabled at:
[  309.090004][  T111] [<0000000