[   90.179506][  T110] su (110) used greatest stack depth: 24016 bytes left
[   90.179525][  T110] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322
[   90.179527][  T110] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 110, name: su
[   90.179529][  T110] preempt_count: 2, expected: 0
[   90.179530][  T110] RCU nest depth: 0, expected: 0
[   90.179530][  T110] locks held by su/110: 5, last CPU#3:
[   90.179533][  T110]  #0: ffffffff9b6027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0
[   90.179545][  T110]  #1: ffffffff9b769cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0
[   90.179550][  T110]  #2: ffffffff9b769d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710
[   90.179554][