[   18.639716][  T110] su (110) used greatest stack depth: 23968 bytes left
[   18.639733][  T110] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322
[   18.639736][  T110] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 110, name: su
[   18.639737][  T110] preempt_count: 2, expected: 0
[   18.639738][  T110] RCU nest depth: 0, expected: 0
[   18.639739][  T110] locks held by su/110: 5, last CPU#0:
[   18.639741][  T110]  #0: ffffffff9b2027b8 (low_water_lock){+.+.}-{3:3}, at: d