[   88.896638][  T109] su (109) used greatest stack depth: 24016 bytes left
[   88.896659][  T109] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322
[   88.896661][  T109] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 109, name: su
[   88.896663][  T109] preempt_count: 2, expected: 0
[   88.896664][  T109] RCU nest depth: 0, expected: 0