[   56.644842][  T112] su (112) used greatest stack depth: 24104 bytes left
[   56.644858][  T112] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322
[   56.644860][  T112] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 112, name: su
[   56.644862][  T112] preempt_count: 2, expected: 0
[   56.644863][  T112] RCU nest depth: 0, expected: 0
[   56.644864][  T112] locks held by su/112: 5, last CPU#3:
[   56.644866][  T112]  #0: ffffffff972027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0
[   56.644879][