[   23.942311][  T109] su (109) used greatest stack depth: 24296 bytes left
[   23.942327][  T109] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322
[   23.942329][  T109] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 109, name: su
[   23.942331][  T109] preempt_count: 2, expected: 0
[   23.942332][  T109] RCU nest depth: 0, expected: 0
[   23.942333][  T109] INFO: lockdep is turned off.
[   23.942334][  T109] irq event stamp: 0
[   23.942335][  T109] hardirqs last  enabled at (0): [<0000000000000000>] 0x0
[   23.942340][  T109] hardirqs last disabled at (0): [<ffffffffa39a848d>] copy_process+0x1ccd/0x6240
[   23.942346][  T109] softirqs last  enabled at (0): [<ffffffffa39a84e1>] copy_process+0x1d21/0x6240
[   23.942348][  T109] softirqs last disabled at (0): [<0000000000000000>] 0x0