[   11.553254][  T110] su (110) used greatest stack depth: 24104 bytes left
[   11.553270][  T110] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322
[   11.553271][  T110] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 110, name: su
[   11.553273][  T110] preempt_count: 2, expected: 0
[   11.553274][  T110] RCU nest depth: 0, expected: 0
[   11.553275][  T110] locks held by su/110: 5, last CPU#1:
[   11.553277][  T110]  #0: ffffffff88a027b8 (low_water_lock){+.