[   89.832788][  T110] su (110) used greatest stack depth: 24104 bytes left
[   89.832805][  T110] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322
[   89.832807][  T110] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 110, name: su
[   89.832809][  T110] preempt_count: 2, expected: 0
[   89.832809][  T110] RCU nest depth: 0, expected: 0
[   89.832811][  T110] locks held by su/110: 5, last CPU#1:
[   89.832813][  T110]  #0: ffffffff85e027b8 (low_water_lock){+.