[  204.824161][  T117] su (117) used greatest stack depth: 23328 bytes left
[  204.824178][  T117] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322
[  204.824180][  T117] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 117, name: su
[  204.824182][  T117] preempt_count: 2, expected: 0
[  204.824183][  T117] RCU nest depth: 0, expected: 0
[  204.824184][  T117] locks held by su/117: 5, last CPU#3:
[  204.824186][  T117]  #0: ffffffffaa8167b8 (low_water_lock){+.