[   86.685102][  T118] su (118) used greatest stack depth: 23280 bytes left
[   86.685120][  T118] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322
[   86.685122][  T118] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 118, name: su
[   86.685123][  T118] preempt_count: 2, expected: 0
[   86.685124][  T118] RCU nest depth: 0, expected: 0
[   86.685125][  T118] locks held by su/118: 5, last CPU#2:
[   86.685127][  T118]  #0: ffffffffa12167b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0
[   86.685139][