[   69.457204][  T112] su (112) used greatest stack depth: 24104 bytes left
[   69.457221][  T112] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322
[   69.457223][  T112] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 112, name: su
[   69.457225][  T112] preempt_count: 2, expected: 0
[   69.457226][  T112] RCU nest depth: 0, expected: 0
[   69.457226][  T112] locks held by su/112: 5, last CPU#2:
[   69.457229][  T112]  #0: ffffffff96c127b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0
[   69.457241][  T112]  #1: ffffffff96d79cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0
[   69.457246][  T112]  #2: ffffffff96d79d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710
[   69.457250][  T112]  #3: ffffffff96c99660 (console_owner){...