[   71.390583][  T109] su (109) used greatest stack depth: 24104 bytes left
[   71.390603][  T109] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322
[   71.390605][  T109] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 109, name: su
[   71.390607][  T109] preempt_count: 2, expected: 0
[   71.390608][  T109] RCU nest depth: 0, expected: 0
[   71.390609][  T109] locks held by su/109: 5, last CPU#0:
[   71.390611][  T109]  #0: ffffffff886267b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0
[   71.390624][  T109]  #1: ffffffff8878dcc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0
[   71.390629][  T109]  #2: ffffffff8878dd38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710