[  297.052785][  T117] su (117) used greatest stack depth: 24072 bytes left
[  297.052799][  T117] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322
[  297.052802][  T117] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 117, name: su
[  297.052803][  T117] preempt_count: 2, expected: 0
[  297.052804][  T117] RCU nest depth: 0, expected: 0
[  297.052805][  T117] INFO: lockdep is turned off.
[  297.052806][  T117] irq event stamp: 152722
[  297.052807][  T117] hardirqs last  enabled at (152721): [<ffffffff97be1483>] _raw_spin_unlock_irqrestore+0x53/0x80
[  297.052816][  T117] hardirqs last disabled at (152722): [<ffffffff97bc3b26>] __schedule+0x1246/0x20e0
[  297.052818][  T117] softirqs last  enabled at (152614): [<ffffffff950d9d89>] fpu_clone+0xd9/0x410
[  297.052822][  T117] softirqs last disabled at (152612): [<ffffffff950d9d32>] fpu_clone+0x82/0x410