[   12.876263][  T110] su (110) used greatest stack depth: 24104 bytes left
[   12.876286][  T110] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322
[   12.876288][  T110] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 110, name: su
[   12.876289][  T110] preempt_count: 2, expected: 0
[   12.876291][  T110] RCU nest depth: 0, expected: 0
[   12.876292][  T110] locks held by su/110: 5, last CPU#0:
[   12.876294][  T110]  #0: ffffffffa42027b8 (low_water_lock){+.