[   33.540020][  T161] su (161) used greatest stack depth: 24104 bytes left
[   33.540034][  T161] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322
[   33.540037][  T161] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 161, name: su
[   33.540038][  T161] preempt_count: 2, expected: 0
[   33.540039][  T161] RCU nest depth: 0, expected: 0
[   33.540040][  T161] INFO: lockdep is turned o