[   30.690925][  T109] su (109) used greatest stack depth: 23232 bytes left
[   30.690942][  T109] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322
[   30.690943][  T109] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 109, name: su
[   30.690945][  T109] preempt_count: 2, expected: 0