[   88.290630][  T111] su (111) used greatest stack depth: 23776 bytes left
[   88.290651][  T111] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322
[   88.290653][  T111] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 111, name: su
[   88.290655][  T111] preempt_count: 2, expected: 0
[   88.290656][  T111] RCU nest depth: 0, expect