[   87.162488][  T118] su (118) used greatest stack depth: 24072 bytes left
[   87.162505][  T118] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322
[   87.162507][  T118] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 118, name: su
[   87.162509][  T118] preempt_count: 2, expected: 0
[   87.162510][  T118] RCU nest depth: 0, expected: 0
[   87.162510][  T118] locks held by su/118: 5, last CPU#0:
[   87.162512][  T118]  #0: ffffffff946167b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xd