[   66.171379][  T110] su (110) used greatest stack depth: 24104 bytes left
[   66.171397][  T110] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322
[   66.171399][  T110] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 110, name: su
[   66.171401][  T110] preempt_count: 2, expected: 0
[   66.171402][  T110] RCU nest depth: 0, expected: 0
[   66.171403][  T110] locks held by su/110: 5, last CPU#3:
[   66.171405][  T110]  #0: ffffffff926027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0
[   66.171416][  T110]  #1: ffffffff92769cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0
[   66.171421][  T110]  #2: ffffffff92769d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710
[   66.171424][  T110]  #3: ffffffff92689660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60
[   66.171428][  T110]  #4: ffffffff92689560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x1df/0x4c0
[   66.171431][  T110] irq event stamp: 154084
[   66.171432][  T110] hardirqs last  enabled at (154083): [<ffffffff8f56d546>] __down_trylock_console_sem+0x86/0xa0
[   66.171435][  T110] hardirqs last disabled at (154084): [<ffffffff8f5735f4>] console_emit_next_record+0x3d4/0x4c0
[   66.171437][  T110] softirqs last  enabled at (153914): [<ffffffff8f3caa2c>] handle_softirqs+0x67c/0x900
[   66.171439][  T110] softirqs last disabled at (152505): [<ffffffff8f3cae65>] __irq_exit_rcu+0x145/0x1c0
[   66.171441][  T110] Preemption disabled at:
[   66.171442][  T110] [<0000000000000000>] 0x0
[   66.171449][