[   11.435238][  T117] su (117) used greatest stack depth: 24072 bytes left
[   11.435256][  T117] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322
[   11.435259][  T117] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 117, name: su
[   11.435260][  T117] preempt_count: 2, expected: 0
[   11.435261][  T117] RCU nest depth: 0, expected: 0
[   11.435262][  T117] locks held by su/117: 5, last CPU#1:
[   11.435264][  T117]  #0: ffffffff85e167b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0
[   11.435277][  T117]  #1: ffffffff85f7ddc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0
[   11.435282][  T117]  #2: ffffffff85f7de38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710