[   19.979440][  T110] su (110) used greatest stack depth: 23232 bytes left
[   19.979459][  T110] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322
[   19.979461][  T110] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 110, name: su
[   19.979462][  T110] preempt_count: 2, expected: 0
[   19.979463][  T110] RCU nest depth: 0, expected: 0
[   19.979464][  T110] locks held by su/110: 5, last CPU#2:
[   19.979467][  T110]  #0: ffffffffa74027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0
[   19.979479][  T110]  #1: ffffffffa7569cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0
[   19.979485][  T110]  #2: ffffffffa7569d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710
[   19.979489][  T110]  #3: ffffffffa7489660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60
[   19.979492][  T110]  #4: ffffffffa7489560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emi