[  283.241187][  T110] su (110) used greatest stack depth: 24104 bytes left
[  283.241206][  T110] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322
[  283.241208][  T110] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 110, name: su
[  283.241210][  T110] preempt_count: 2, expected: 0
[  283.241211][  T110] RCU nest depth: 0, expected: 0
[  283.241212][  T110] locks held by su/110: 5, last CPU#3:
[  283.241214][  T110]  #0: ffffffff978027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0
[  283.241227][  T110]  #1: ffffffff97969cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0
[  283.241233][  T110]  #2: ffffffff97969d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710
[  283.241236][  T110]  #3: ffffffff97889660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60
[  283.241240][  T110]  #4: ffffffff97889560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x1df/0x4c0
[  283.241244][  T110] irq event stamp: 163196
[  283.241245][  T110] hardirqs last  enabled at (163195): [<ffffffff94770546>] __down_trylock_console_sem+0x86/0xa0
[  283.241247][  T110] hardirqs last disabled at (163196): [<ffffffff947765f4>] console_emit_nex