[   15.285540][  T118] su (118) used greatest stack depth: 24104 bytes left
[   15.285561][  T118] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322
[   15.285563][  T118] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 118, name: su
[   15.285565][  T118] preempt_count: 2, expected: 0
[   15.285566][  T118] RCU nest depth: 0, expected: 0
[   15.285567][  T118] locks held by su/118: 5, last CPU#3:
[   15.285569][  T118]  #0: ffffffff916027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0
[   15.285581][  T118]  #1: ffffffff91799dc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0
[   15.285587][  T118]  #2: ffffffff91799e38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710
[   15.285591][  T118]  #3: ffffffff91689760 (console_owner){....}-{0:0}, at: co