[   70.236272][  T110] su (110) used greatest stack depth: 24104 bytes left
[   70.236293][  T110] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322
[   70.236295][  T110] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 110, name: su
[   70.236297][  T110] preempt_count: 2, expected: 0
[   70.236298][  T110] RCU nest depth: 0, expected: 0
[   70.236299][  T110] locks held by su/110: 5, last CPU#0:
[   70.236302][  T110]  #0: ffffffff938027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0
[   70.236314][  T110]  #1: ffffffff93969cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0
[   70.236320][  T110]  #2: ffffffff93969d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710
[   70.236324][  T110]  #3: ffffffff93889660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60
[   70.236329][  T110]  #4: ffffffff93889560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x1df/0x4c0
[   70.236332][  T110] irq event stamp: 179110
[   70.236333][  T110] hardirqs last  enabled at (179109): [<ffffffff90770546>] __down_trylock_console_sem+0x86/0xa0
[   70.236336][  T110] hardirqs last disabled at (179110): [<ffffffff907765f4>] console_emit_next_record+0x3d4/0x4c0
[   70.236338][  T110] softirqs last  enabled at (177628): [<ffffffff905cda2c>] handle_softirqs+0x67c/0x900
[   70.236340][  T110] softirqs last disabled at (176725): [<ffffffff905cde65>] __irq_exit_rcu+0x145/0x1c0
[   70.236342][  T110] Preemption disabled at: