[  109.413150][  T112] su (112) used greatest stack depth: 24104 bytes left
[  109.413170][  T112] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322
[  109.413172][  T112] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 112, name: su
[  109.413173][  T112] preempt_count: 2, expected: 0
[  109.413174][  T112] RCU nest depth: 0, expected: 0
[  109.413175][  T112] locks held by su/112: 5, last CPU#2:
[  109.413177][  T112]  #0: ffffffffbb2127b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0
[  109.413188][  T112]  #1: ffffffffbb379cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0
[  109.413193][  T112]  #2: ffffffffbb379d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710
[  109.413197][  T112]  #3: ffffffffbb299660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60
[  109.413200][  T112]  #4: ffffffffbb299560 (pr