[   11.195671][  T112] su (112) used greatest stack depth: 24104 bytes left
[   11.195692][  T112] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322
[   11.195694][  T112] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 112, name: su
[   11.195696][  T112] preempt_count: 2, expected: 0
[   11.195697][  T112] RCU nest depth: 0, expected: 0
[   11.195698][  T112] locks held by su/112: 5, last CPU#3:
[   11.195701][  T112]  #0: ffffffffa48127b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0
[   11.195712][  T112]  #1: ffffffffa4979cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0
[   11.195719][  T112]  #2: ffffffffa4979d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710
[   11.195724][  T112]  #3: ffffffffa4899660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60
[   11.195730][  T112]  #4: ffffffffa4899560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x1df/0x4c0
[   11.195736][  T112] irq event stamp: 161850
[   11.195737][  T112] hardirqs last  enabled at (161849): [<ffffffffa157a546>] __down_trylock_console_sem+0x86/