[   53.161672][  T111] su (111) used greatest stack depth: 23408 bytes left
[   53.161692][  T111] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322
[   53.161694][  T111] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 111, name: su
[   53.161695][  T111] preempt_count: 2, expected: 0
[   53.161696][  T111] RCU nest depth: 0, expected: 0
[   53.161697][  T111] locks held by su/111: 5, last CPU#0:
[   53.161699][  T111]  #0: ffffffff8cc02f58 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x8e7/0xef0